Merge pull request #6373 from y-zeng/server-builder-plugin

Server builder plugin
diff --git a/BUILD b/BUILD
index ee9801b..1ca3578 100644
--- a/BUILD
+++ b/BUILD
@@ -285,44 +285,8 @@
     "src/core/ext/client_config/subchannel_call_holder.h",
     "src/core/ext/client_config/subchannel_index.h",
     "src/core/ext/client_config/uri_parser.h",
-    "include/grpc/byte_buffer.h",
-    "include/grpc/grpc.h",
-    "include/grpc/impl/codegen/alloc.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_win32.h",
-    "include/grpc/impl/codegen/byte_buffer.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/log.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/slice_buffer.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_win32.h",
-    "include/grpc/impl/codegen/time.h",
-    "include/grpc/status.h",
-    "include/grpc/support/alloc.h",
-    "include/grpc/support/atm.h",
-    "include/grpc/support/host_port.h",
-    "include/grpc/support/log.h",
-    "include/grpc/support/port_platform.h",
-    "include/grpc/support/slice.h",
-    "include/grpc/support/slice_buffer.h",
-    "include/grpc/support/string_util.h",
-    "include/grpc/support/sync.h",
-    "include/grpc/support/time.h",
-    "include/grpc/support/useful.h",
-    "src/core/lib/support/string.h",
-    "third_party/objective_c/Cronet/cronet_c_for_grpc.h",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
     "src/core/ext/census/aggregation.h",
     "src/core/ext/census/census_interface.h",
     "src/core/ext/census/census_rpc_stats.h",
@@ -475,11 +439,8 @@
     "src/core/ext/client_config/uri_parser.c",
     "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
     "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c",
-    "src/core/ext/transport/cronet/transport/cronet_api_dummy.c",
-    "src/core/ext/transport/cronet/transport/cronet_transport.c",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
     "src/core/ext/lb_policy/pick_first/pick_first.c",
     "src/core/ext/lb_policy/round_robin/round_robin.c",
     "src/core/ext/resolver/dns/native/dns_resolver.c",
@@ -522,7 +483,6 @@
     "include/grpc/impl/codegen/sync_posix.h",
     "include/grpc/impl/codegen/sync_win32.h",
     "include/grpc/impl/codegen/time.h",
-    "include/grpc/grpc_cronet.h",
     "include/grpc/grpc_security.h",
     "include/grpc/grpc_security_constants.h",
     "include/grpc/census.h",
@@ -658,7 +618,7 @@
     "src/core/ext/client_config/subchannel_index.h",
     "src/core/ext/client_config/uri_parser.h",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
     "src/core/ext/census/aggregation.h",
     "src/core/ext/census/census_interface.h",
     "src/core/ext/census/census_rpc_stats.h",
@@ -794,7 +754,7 @@
     "src/core/ext/resolver/dns/native/dns_resolver.c",
     "src/core/ext/resolver/sockaddr/sockaddr_resolver.c",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
     "src/core/ext/lb_policy/pick_first/pick_first.c",
     "src/core/ext/lb_policy/round_robin/round_robin.c",
     "src/core/ext/census/context.c",
@@ -1504,11 +1464,8 @@
     "src/core/ext/client_config/uri_parser.c",
     "src/core/ext/transport/chttp2/server/insecure/server_chttp2.c",
     "src/core/ext/transport/chttp2/client/insecure/channel_create.c",
-    "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c",
-    "src/core/ext/transport/cronet/transport/cronet_api_dummy.c",
-    "src/core/ext/transport/cronet/transport/cronet_transport.c",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.c",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c",
     "src/core/ext/lb_policy/pick_first/pick_first.c",
     "src/core/ext/lb_policy/round_robin/round_robin.c",
     "src/core/ext/resolver/dns/native/dns_resolver.c",
@@ -1551,7 +1508,6 @@
     "include/grpc/impl/codegen/sync_posix.h",
     "include/grpc/impl/codegen/sync_win32.h",
     "include/grpc/impl/codegen/time.h",
-    "include/grpc/grpc_cronet.h",
     "include/grpc/grpc_security.h",
     "include/grpc/grpc_security_constants.h",
     "include/grpc/census.h",
@@ -1679,44 +1635,8 @@
     "src/core/ext/client_config/subchannel_call_holder.h",
     "src/core/ext/client_config/subchannel_index.h",
     "src/core/ext/client_config/uri_parser.h",
-    "include/grpc/byte_buffer.h",
-    "include/grpc/grpc.h",
-    "include/grpc/impl/codegen/alloc.h",
-    "include/grpc/impl/codegen/atm.h",
-    "include/grpc/impl/codegen/atm_gcc_atomic.h",
-    "include/grpc/impl/codegen/atm_gcc_sync.h",
-    "include/grpc/impl/codegen/atm_win32.h",
-    "include/grpc/impl/codegen/byte_buffer.h",
-    "include/grpc/impl/codegen/compression_types.h",
-    "include/grpc/impl/codegen/connectivity_state.h",
-    "include/grpc/impl/codegen/grpc_types.h",
-    "include/grpc/impl/codegen/log.h",
-    "include/grpc/impl/codegen/port_platform.h",
-    "include/grpc/impl/codegen/propagation_bits.h",
-    "include/grpc/impl/codegen/slice.h",
-    "include/grpc/impl/codegen/slice_buffer.h",
-    "include/grpc/impl/codegen/status.h",
-    "include/grpc/impl/codegen/sync.h",
-    "include/grpc/impl/codegen/sync_generic.h",
-    "include/grpc/impl/codegen/sync_posix.h",
-    "include/grpc/impl/codegen/sync_win32.h",
-    "include/grpc/impl/codegen/time.h",
-    "include/grpc/status.h",
-    "include/grpc/support/alloc.h",
-    "include/grpc/support/atm.h",
-    "include/grpc/support/host_port.h",
-    "include/grpc/support/log.h",
-    "include/grpc/support/port_platform.h",
-    "include/grpc/support/slice.h",
-    "include/grpc/support/slice_buffer.h",
-    "include/grpc/support/string_util.h",
-    "include/grpc/support/sync.h",
-    "include/grpc/support/time.h",
-    "include/grpc/support/useful.h",
-    "src/core/lib/support/string.h",
-    "third_party/objective_c/Cronet/cronet_c_for_grpc.h",
     "src/core/ext/lb_policy/grpclb/load_balancer_api.h",
-    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h",
+    "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
     "src/core/ext/census/aggregation.h",
     "src/core/ext/census/census_interface.h",
     "src/core/ext/census/census_rpc_stats.h",
diff --git a/Makefile b/Makefile
index c265380..f0a0ebd 100644
--- a/Makefile
+++ b/Makefile
@@ -319,12 +319,19 @@
 HAS_WORKING_SHADOW = $(shell $(CHECK_SHADOW_WORKS_CMD) 2> /dev/null && echo true || echo false)
 ifeq ($(HAS_WORKING_SHADOW),true)
 W_SHADOW=-Wshadow
+NO_W_SHADOW=-Wno-shadow
 endif
-
-CHECK_NO_SHIFT_NEGATIVE_VALUE_CMD = $(CC) -std=c99 -Werror -Wno-shift-negative-value -o $(TMPOUT) -c test/build/empty.c
-HAS_NO_SHIFT_NEGATIVE_VALUE = $(shell $(CHECK_NO_SHIFT_NEGATIVE_VALUE_CMD) 2> /dev/null && echo true || echo false)
-ifeq ($(HAS_NO_SHIFT_NEGATIVE_VALUE),true)
+CHECK_EXTRA_SEMI_WORKS_CMD = $(CC) -std=c99 -Werror -Wextra-semi -o $(TMPOUT) -c test/build/extra-semi.c
+HAS_WORKING_EXTRA_SEMI = $(shell $(CHECK_EXTRA_SEMI_WORKS_CMD) 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_WORKING_EXTRA_SEMI),true)
+W_EXTRA_SEMI=-Wextra-semi
+NO_W_EXTRA_SEMI=-Wno-extra-semi
+endif
+CHECK_NO_SHIFT_NEGATIVE_VALUE_WORKS_CMD = $(CC) -std=c99 -Werror -Wno-shift-negative-value -o $(TMPOUT) -c test/build/no-shift-negative-value.c
+HAS_WORKING_NO_SHIFT_NEGATIVE_VALUE = $(shell $(CHECK_NO_SHIFT_NEGATIVE_VALUE_WORKS_CMD) 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_WORKING_NO_SHIFT_NEGATIVE_VALUE),true)
 W_NO_SHIFT_NEGATIVE_VALUE=-Wno-shift-negative-value
+NO_W_NO_SHIFT_NEGATIVE_VALUE=-Wshift-negative-value
 endif
 
 # The HOST compiler settings are used to compile the protoc plugins.
@@ -341,7 +348,7 @@
 DEFINES += $(EXTRA_DEFINES)
 endif
 
-CFLAGS += -std=c99 -Wsign-conversion -Wconversion $(W_SHADOW)
+CFLAGS += -std=c99 -Wsign-conversion -Wconversion $(W_SHADOW) $(W_EXTRA_SEMI)
 ifeq ($(HAS_CXX11),true)
 CXXFLAGS += -std=c++11
 else
@@ -472,7 +479,7 @@
 
 OPENSSL_ALPN_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/openssl-alpn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
 OPENSSL_NPN_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/openssl-npn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
-BORINGSSL_COMPILE_CHECK_CMD = $(CC) $(CPPFLAGS) -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare -o $(TMPOUT) test/build/boringssl.c $(LDFLAGS)
+BORINGSSL_COMPILE_CHECK_CMD = $(CC) $(CPPFLAGS) -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI) -o $(TMPOUT) test/build/boringssl.c $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/zlib.c -lz $(LDFLAGS)
 PROTOBUF_CHECK_CMD = $(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $(TMPOUT) test/build/protobuf.cc -lprotobuf $(LDFLAGS)
 
@@ -1090,6 +1097,7 @@
 head_of_line_blocking_bad_client_test: $(BINDIR)/$(CONFIG)/head_of_line_blocking_bad_client_test
 headers_bad_client_test: $(BINDIR)/$(CONFIG)/headers_bad_client_test
 initial_settings_frame_bad_client_test: $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
+large_metadata_bad_client_test: $(BINDIR)/$(CONFIG)/large_metadata_bad_client_test
 server_registered_method_bad_client_test: $(BINDIR)/$(CONFIG)/server_registered_method_bad_client_test
 simple_request_bad_client_test: $(BINDIR)/$(CONFIG)/simple_request_bad_client_test
 unknown_frame_bad_client_test: $(BINDIR)/$(CONFIG)/unknown_frame_bad_client_test
@@ -1319,6 +1327,7 @@
   $(BINDIR)/$(CONFIG)/head_of_line_blocking_bad_client_test \
   $(BINDIR)/$(CONFIG)/headers_bad_client_test \
   $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test \
+  $(BINDIR)/$(CONFIG)/large_metadata_bad_client_test \
   $(BINDIR)/$(CONFIG)/server_registered_method_bad_client_test \
   $(BINDIR)/$(CONFIG)/simple_request_bad_client_test \
   $(BINDIR)/$(CONFIG)/unknown_frame_bad_client_test \
@@ -1658,6 +1667,8 @@
 	$(Q) $(BINDIR)/$(CONFIG)/headers_bad_client_test || ( echo test headers_bad_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing initial_settings_frame_bad_client_test"
 	$(Q) $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test || ( echo test initial_settings_frame_bad_client_test failed ; exit 1 )
+	$(E) "[RUN]     Testing large_metadata_bad_client_test"
+	$(Q) $(BINDIR)/$(CONFIG)/large_metadata_bad_client_test || ( echo test large_metadata_bad_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing server_registered_method_bad_client_test"
 	$(Q) $(BINDIR)/$(CONFIG)/server_registered_method_bad_client_test || ( echo test server_registered_method_bad_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing simple_request_bad_client_test"
@@ -1874,15 +1885,15 @@
 	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 ifeq ($(NO_PROTOC),true)
-$(GENDIR)/src/proto/grpc/lb/v0/load_balancer.pb.cc: protoc_dep_error
-$(GENDIR)/src/proto/grpc/lb/v0/load_balancer.grpc.pb.cc: protoc_dep_error
+$(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc: protoc_dep_error
+$(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc: protoc_dep_error
 else
-$(GENDIR)/src/proto/grpc/lb/v0/load_balancer.pb.cc: src/proto/grpc/lb/v0/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+$(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc: src/proto/grpc/lb/v1/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=$(GENDIR) $<
 
-$(GENDIR)/src/proto/grpc/lb/v0/load_balancer.grpc.pb.cc: src/proto/grpc/lb/v0/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+$(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc: src/proto/grpc/lb/v1/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(BINDIR)/$(CONFIG)/grpc_cpp_plugin $<
@@ -2627,11 +2638,8 @@
     src/core/ext/client_config/uri_parser.c \
     src/core/ext/transport/chttp2/server/insecure/server_chttp2.c \
     src/core/ext/transport/chttp2/client/insecure/channel_create.c \
-    src/core/ext/transport/cronet/client/secure/cronet_channel_create.c \
-    src/core/ext/transport/cronet/transport/cronet_api_dummy.c \
-    src/core/ext/transport/cronet/transport/cronet_transport.c \
     src/core/ext/lb_policy/grpclb/load_balancer_api.c \
-    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c \
+    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c \
     third_party/nanopb/pb_common.c \
     third_party/nanopb/pb_decode.c \
     third_party/nanopb/pb_encode.c \
@@ -2677,7 +2685,6 @@
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_win32.h \
     include/grpc/impl/codegen/time.h \
-    include/grpc/grpc_cronet.h \
     include/grpc/grpc_security.h \
     include/grpc/grpc_security_constants.h \
     include/grpc/census.h \
@@ -2955,7 +2962,7 @@
     src/core/ext/resolver/dns/native/dns_resolver.c \
     src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
     src/core/ext/lb_policy/grpclb/load_balancer_api.c \
-    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c \
+    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c \
     third_party/nanopb/pb_common.c \
     third_party/nanopb/pb_decode.c \
     third_party/nanopb/pb_encode.c \
@@ -4338,7 +4345,7 @@
 LIBBORINGSSL_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_SRC))))
 
 $(LIBBORINGSSL_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl.a: $(ZLIB_DEP)  $(LIBBORINGSSL_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -4367,7 +4374,7 @@
 LIBBORINGSSL_TEST_UTIL_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_TEST_UTIL_SRC))))
 
 $(LIBBORINGSSL_TEST_UTIL_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_TEST_UTIL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_TEST_UTIL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4405,7 +4412,7 @@
 LIBBORINGSSL_AES_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_AES_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_AES_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_AES_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_AES_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4443,7 +4450,7 @@
 LIBBORINGSSL_ASN1_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_ASN1_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_ASN1_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_ASN1_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_ASN1_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4481,7 +4488,7 @@
 LIBBORINGSSL_BASE64_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_BASE64_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_BASE64_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_BASE64_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_BASE64_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4519,7 +4526,7 @@
 LIBBORINGSSL_BIO_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_BIO_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_BIO_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_BIO_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_BIO_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4557,7 +4564,7 @@
 LIBBORINGSSL_BN_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_BN_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_BN_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_BN_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_BN_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4595,7 +4602,7 @@
 LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_BYTESTRING_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4633,7 +4640,7 @@
 LIBBORINGSSL_AEAD_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_AEAD_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_AEAD_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_AEAD_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_AEAD_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4671,7 +4678,7 @@
 LIBBORINGSSL_CIPHER_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_CIPHER_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4709,7 +4716,7 @@
 LIBBORINGSSL_CMAC_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_CMAC_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_CMAC_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_CMAC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_CMAC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4747,7 +4754,7 @@
 LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -4774,7 +4781,7 @@
 LIBBORINGSSL_ED25519_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_ED25519_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_ED25519_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_ED25519_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_ED25519_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4812,7 +4819,7 @@
 LIBBORINGSSL_X25519_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_X25519_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_X25519_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_X25519_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_X25519_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4850,7 +4857,7 @@
 LIBBORINGSSL_DH_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_DH_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_DH_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_DH_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_DH_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4888,7 +4895,7 @@
 LIBBORINGSSL_DIGEST_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_DIGEST_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4926,7 +4933,7 @@
 LIBBORINGSSL_DSA_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_DSA_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_DSA_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_DSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_DSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_DSA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -4953,7 +4960,7 @@
 LIBBORINGSSL_EC_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_EC_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_EC_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_EC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_EC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -4991,7 +4998,7 @@
 LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_EXAMPLE_MUL_LIB_SRC))))
 
 $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5018,7 +5025,7 @@
 LIBBORINGSSL_ECDSA_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_ECDSA_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5056,7 +5063,7 @@
 LIBBORINGSSL_ERR_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_ERR_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_ERR_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_ERR_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_ERR_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5094,7 +5101,7 @@
 LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5132,7 +5139,7 @@
 LIBBORINGSSL_EVP_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_EVP_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_EVP_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_EVP_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_EVP_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5170,7 +5177,7 @@
 LIBBORINGSSL_PBKDF_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_PBKDF_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5208,7 +5215,7 @@
 LIBBORINGSSL_HKDF_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_HKDF_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_HKDF_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_HKDF_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5235,7 +5242,7 @@
 LIBBORINGSSL_HMAC_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_HMAC_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_HMAC_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_HMAC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_HMAC_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5273,7 +5280,7 @@
 LIBBORINGSSL_LHASH_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_LHASH_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_LHASH_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_LHASH_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5300,7 +5307,7 @@
 LIBBORINGSSL_GCM_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_GCM_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_GCM_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_GCM_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_GCM_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_GCM_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5327,7 +5334,7 @@
 LIBBORINGSSL_PKCS12_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_PKCS12_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5365,7 +5372,7 @@
 LIBBORINGSSL_PKCS8_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_PKCS8_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5403,7 +5410,7 @@
 LIBBORINGSSL_POLY1305_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_POLY1305_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5441,7 +5448,7 @@
 LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_REFCOUNT_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5468,7 +5475,7 @@
 LIBBORINGSSL_RSA_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_RSA_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_RSA_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_RSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_RSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5506,7 +5513,7 @@
 LIBBORINGSSL_THREAD_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_THREAD_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_THREAD_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_THREAD_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5533,7 +5540,7 @@
 LIBBORINGSSL_PKCS7_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_PKCS7_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5560,7 +5567,7 @@
 LIBBORINGSSL_X509_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_X509_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_X509_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_X509_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_X509_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -5598,7 +5605,7 @@
 LIBBORINGSSL_TAB_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_TAB_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_TAB_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_TAB_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_TAB_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_TAB_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5625,7 +5632,7 @@
 LIBBORINGSSL_V3NAME_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_V3NAME_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5652,7 +5659,7 @@
 LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_PQUEUE_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -5679,7 +5686,7 @@
 LIBBORINGSSL_SSL_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBBORINGSSL_SSL_TEST_LIB_SRC))))
 
 $(LIBBORINGSSL_SSL_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
-$(LIBBORINGSSL_SSL_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+$(LIBBORINGSSL_SSL_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 ifeq ($(NO_PROTOBUF),true)
 
@@ -10758,7 +10765,7 @@
 
 
 GRPCLB_API_TEST_SRC = \
-    $(GENDIR)/src/proto/grpc/lb/v0/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v0/load_balancer.grpc.pb.cc \
+    $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc \
     test/cpp/grpclb/grpclb_api_test.cc \
 
 GRPCLB_API_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPCLB_API_TEST_SRC))))
@@ -10790,7 +10797,7 @@
 
 endif
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/lb/v0/load_balancer.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/lb/v1/load_balancer.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a
 
 $(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_api_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a
 
@@ -10801,7 +10808,7 @@
 -include $(GRPCLB_API_TEST_OBJS:.o=.dep)
 endif
 endif
-$(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_api_test.o: $(GENDIR)/src/proto/grpc/lb/v0/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v0/load_balancer.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_api_test.o: $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc
 
 
 HYBRID_END2END_TEST_SRC = \
@@ -12037,7 +12044,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_AES_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_AES_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_AES_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_AES_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12064,7 +12071,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_ASN1_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_ASN1_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_ASN1_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_ASN1_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12091,7 +12098,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_BASE64_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_BASE64_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_BASE64_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_BASE64_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12118,7 +12125,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_BIO_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_BIO_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_BIO_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_BIO_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12145,7 +12152,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_BN_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_BN_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_BN_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_BN_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12172,7 +12179,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_BYTESTRING_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_BYTESTRING_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_BYTESTRING_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_BYTESTRING_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12199,7 +12206,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_AEAD_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_AEAD_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_AEAD_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_AEAD_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12226,7 +12233,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_CIPHER_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_CIPHER_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_CIPHER_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_CIPHER_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12253,7 +12260,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_CMAC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_CMAC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_CMAC_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_CMAC_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12280,7 +12287,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12307,7 +12314,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_ED25519_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_ED25519_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_ED25519_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_ED25519_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12334,7 +12341,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_X25519_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_X25519_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_X25519_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_X25519_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12361,7 +12368,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_DH_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_DH_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_DH_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_DH_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12388,7 +12395,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_DIGEST_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_DIGEST_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_DIGEST_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_DIGEST_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12415,7 +12422,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_DSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_DSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_DSA_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_DSA_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12442,7 +12449,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_EC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_EC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_EC_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_EC_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12469,7 +12476,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_EXAMPLE_MUL_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_EXAMPLE_MUL_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_EXAMPLE_MUL_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_EXAMPLE_MUL_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12496,7 +12503,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_ECDSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_ECDSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_ECDSA_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_ECDSA_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12523,7 +12530,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_ERR_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_ERR_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_ERR_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_ERR_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12550,7 +12557,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_EVP_EXTRA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_EVP_EXTRA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_EVP_EXTRA_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_EVP_EXTRA_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12577,7 +12584,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_EVP_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_EVP_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_EVP_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_EVP_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12604,7 +12611,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_PBKDF_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_PBKDF_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_PBKDF_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_PBKDF_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12631,7 +12638,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_HKDF_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_HKDF_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_HKDF_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_HKDF_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12658,7 +12665,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_HMAC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_HMAC_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_HMAC_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_HMAC_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12685,7 +12692,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_LHASH_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_LHASH_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_LHASH_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_LHASH_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12712,7 +12719,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_GCM_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_GCM_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_GCM_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_GCM_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12739,7 +12746,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_PKCS12_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_PKCS12_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_PKCS12_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_PKCS12_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12766,7 +12773,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_PKCS8_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_PKCS8_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_PKCS8_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_PKCS8_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12793,7 +12800,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_POLY1305_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_POLY1305_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_POLY1305_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_POLY1305_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12820,7 +12827,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_REFCOUNT_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_REFCOUNT_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_REFCOUNT_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_REFCOUNT_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12847,7 +12854,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_RSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_RSA_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_RSA_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_RSA_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12874,7 +12881,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_THREAD_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_THREAD_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_THREAD_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_THREAD_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12901,7 +12908,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_PKCS7_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_PKCS7_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_PKCS7_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_PKCS7_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12928,7 +12935,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_X509_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_X509_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_X509_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_X509_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12955,7 +12962,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_TAB_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_TAB_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_TAB_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_TAB_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -12982,7 +12989,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_V3NAME_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_V3NAME_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_V3NAME_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_V3NAME_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -13009,7 +13016,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_PQUEUE_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_PQUEUE_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_PQUEUE_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_PQUEUE_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -13036,7 +13043,7 @@
 # boringssl needs an override to ensure that it does not include
 # system openssl headers regardless of other configuration
 # we do so here with a target specific variable assignment
-$(BORINGSSL_SSL_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+$(BORINGSSL_SSL_TEST_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
 $(BORINGSSL_SSL_TEST_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
 $(BORINGSSL_SSL_TEST_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
 
@@ -13159,6 +13166,26 @@
 endif
 
 
+LARGE_METADATA_BAD_CLIENT_TEST_SRC = \
+    test/core/bad_client/tests/large_metadata.c \
+
+LARGE_METADATA_BAD_CLIENT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LARGE_METADATA_BAD_CLIENT_TEST_SRC))))
+
+
+$(BINDIR)/$(CONFIG)/large_metadata_bad_client_test: $(LARGE_METADATA_BAD_CLIENT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(LARGE_METADATA_BAD_CLIENT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) -o $(BINDIR)/$(CONFIG)/large_metadata_bad_client_test
+
+$(OBJDIR)/$(CONFIG)/test/core/bad_client/tests/large_metadata.o:  $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_large_metadata_bad_client_test: $(LARGE_METADATA_BAD_CLIENT_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_DEPS),true)
+-include $(LARGE_METADATA_BAD_CLIENT_TEST_OBJS:.o=.dep)
+endif
+
+
 SERVER_REGISTERED_METHOD_BAD_CLIENT_TEST_SRC = \
     test/core/bad_client/tests/server_registered_method.c \
 
@@ -14372,9 +14399,6 @@
 # otherwise parallel compilation will fail if a source is compiled first.
 src/core/ext/transport/chttp2/client/secure/secure_channel_create.c: $(OPENSSL_DEP)
 src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c: $(OPENSSL_DEP)
-src/core/ext/transport/cronet/client/secure/cronet_channel_create.c: $(OPENSSL_DEP)
-src/core/ext/transport/cronet/transport/cronet_api_dummy.c: $(OPENSSL_DEP)
-src/core/ext/transport/cronet/transport/cronet_transport.c: $(OPENSSL_DEP)
 src/core/lib/http/httpcli_security_connector.c: $(OPENSSL_DEP)
 src/core/lib/security/b64.c: $(OPENSSL_DEP)
 src/core/lib/security/client_auth_filter.c: $(OPENSSL_DEP)
diff --git a/binding.gyp b/binding.gyp
index 12a745f..8bc2aee 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -709,11 +709,8 @@
         'src/core/ext/client_config/uri_parser.c',
         'src/core/ext/transport/chttp2/server/insecure/server_chttp2.c',
         'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
-        'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-        'src/core/ext/transport/cronet/transport/cronet_api_dummy.c',
-        'src/core/ext/transport/cronet/transport/cronet_transport.c',
         'src/core/ext/lb_policy/grpclb/load_balancer_api.c',
-        'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c',
+        'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
         'third_party/nanopb/pb_common.c',
         'third_party/nanopb/pb_decode.c',
         'third_party/nanopb/pb_encode.c',
diff --git a/build.yaml b/build.yaml
index edfc3cd..187eb9c 100644
--- a/build.yaml
+++ b/build.yaml
@@ -362,10 +362,10 @@
 - name: grpc_lb_policy_grpclb
   headers:
   - src/core/ext/lb_policy/grpclb/load_balancer_api.h
-  - src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h
+  - src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
   src:
   - src/core/ext/lb_policy/grpclb/load_balancer_api.c
-  - src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c
+  - src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
   uses:
   - grpc_base
   - grpc_client_config
@@ -400,7 +400,6 @@
   - grpc_client_config
 - name: grpc_secure
   public_headers:
-  - include/grpc/grpc_cronet.h
   - include/grpc/grpc_security.h
   - include/grpc/grpc_security_constants.h
   headers:
@@ -548,63 +547,6 @@
   - grpc_transport_chttp2
   - grpc_base
   - grpc_secure
-- name: grpc_transport_cronet_client_secure
-  headers:
-  - include/grpc/byte_buffer.h
-  - include/grpc/grpc.h
-  - include/grpc/impl/codegen/alloc.h
-  - include/grpc/impl/codegen/atm.h
-  - include/grpc/impl/codegen/atm_gcc_atomic.h
-  - include/grpc/impl/codegen/atm_gcc_sync.h
-  - include/grpc/impl/codegen/atm_win32.h
-  - include/grpc/impl/codegen/byte_buffer.h
-  - include/grpc/impl/codegen/compression_types.h
-  - include/grpc/impl/codegen/connectivity_state.h
-  - include/grpc/impl/codegen/grpc_types.h
-  - include/grpc/impl/codegen/log.h
-  - include/grpc/impl/codegen/port_platform.h
-  - include/grpc/impl/codegen/propagation_bits.h
-  - include/grpc/impl/codegen/slice.h
-  - include/grpc/impl/codegen/slice_buffer.h
-  - include/grpc/impl/codegen/status.h
-  - include/grpc/impl/codegen/sync.h
-  - include/grpc/impl/codegen/sync_generic.h
-  - include/grpc/impl/codegen/sync_posix.h
-  - include/grpc/impl/codegen/sync_win32.h
-  - include/grpc/impl/codegen/time.h
-  - include/grpc/status.h
-  - include/grpc/support/alloc.h
-  - include/grpc/support/atm.h
-  - include/grpc/support/host_port.h
-  - include/grpc/support/log.h
-  - include/grpc/support/port_platform.h
-  - include/grpc/support/slice.h
-  - include/grpc/support/slice_buffer.h
-  - include/grpc/support/string_util.h
-  - include/grpc/support/sync.h
-  - include/grpc/support/time.h
-  - include/grpc/support/useful.h
-  - src/core/ext/transport/chttp2/transport/incoming_metadata.h
-  - src/core/lib/channel/channel_stack.h
-  - src/core/lib/channel/context.h
-  - src/core/lib/debug/trace.h
-  - src/core/lib/iomgr/closure.h
-  - src/core/lib/iomgr/exec_ctx.h
-  - src/core/lib/iomgr/pollset.h
-  - src/core/lib/iomgr/pollset_set.h
-  - src/core/lib/support/string.h
-  - src/core/lib/surface/channel.h
-  - src/core/lib/surface/channel_stack_type.h
-  - src/core/lib/transport/byte_stream.h
-  - src/core/lib/transport/metadata.h
-  - src/core/lib/transport/metadata_batch.h
-  - src/core/lib/transport/transport.h
-  - src/core/lib/transport/transport_impl.h
-  - third_party/objective_c/Cronet/cronet_c_for_grpc.h
-  src:
-  - src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
-  - src/core/ext/transport/cronet/transport/cronet_api_dummy.c
-  - src/core/ext/transport/cronet/transport/cronet_transport.c
 - name: nanopb
   headers:
   - third_party/nanopb/pb.h
@@ -794,7 +736,6 @@
   - grpc_transport_chttp2_client_secure
   - grpc_transport_chttp2_server_insecure
   - grpc_transport_chttp2_client_insecure
-  - grpc_transport_cronet_client_secure
   - grpc_lb_policy_grpclb
   - grpc_lb_policy_pick_first
   - grpc_lb_policy_round_robin
@@ -2704,7 +2645,7 @@
   build: test
   language: c++
   src:
-  - src/proto/grpc/lb/v0/load_balancer.proto
+  - src/proto/grpc/lb/v1/load_balancer.proto
   - test/cpp/grpclb/grpclb_api_test.cc
   deps:
   - grpc++_test_util
@@ -3326,7 +3267,7 @@
 defaults:
   boringssl:
     CFLAGS: -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas
-      -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare
+      -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
     CPPFLAGS: -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM
       -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
   global:
diff --git a/config.m4 b/config.m4
index 5259e67..c8d2aae 100644
--- a/config.m4
+++ b/config.m4
@@ -228,11 +228,8 @@
     src/core/ext/client_config/uri_parser.c \
     src/core/ext/transport/chttp2/server/insecure/server_chttp2.c \
     src/core/ext/transport/chttp2/client/insecure/channel_create.c \
-    src/core/ext/transport/cronet/client/secure/cronet_channel_create.c \
-    src/core/ext/transport/cronet/transport/cronet_api_dummy.c \
-    src/core/ext/transport/cronet/transport/cronet_transport.c \
     src/core/ext/lb_policy/grpclb/load_balancer_api.c \
-    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c \
+    src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c \
     third_party/nanopb/pb_common.c \
     third_party/nanopb/pb_decode.c \
     third_party/nanopb/pb_encode.c \
@@ -558,7 +555,7 @@
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/census)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/client_config)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/grpclb)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/pick_first)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/round_robin)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/dns/native)
@@ -569,8 +566,6 @@
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/server/insecure)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/server/secure)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/transport)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/cronet/client/secure)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/cronet/transport)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/channel)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/compression)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/debug)
diff --git a/examples/objective-c/route_guide/ViewControllers.m b/examples/objective-c/route_guide/ViewControllers.m
index 0b1a1cf..e329782 100644
--- a/examples/objective-c/route_guide/ViewControllers.m
+++ b/examples/objective-c/route_guide/ViewControllers.m
@@ -80,19 +80,14 @@
  * Run the getFeature demo. Calls getFeature with a point known to have a feature and a point known
  * not to have a feature.
  */
-@interface GetFeatureViewController : UIViewController
+@interface GetFeatureViewController : UIViewController {
+  RTGRouteGuide *service;
+}
 @end
 
 @implementation GetFeatureViewController
 
-- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  // This only needs to be done once per host, before creating service objects for that host.
-  [GRPCCall useInsecureConnectionsForHost:kHostAddress];
-
-  RTGRouteGuide *service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
-
+- (void)execRequest {
   void (^handler)(RTGFeature *response, NSError *error) = ^(RTGFeature *response, NSError *error) {
     if (response.name.length) {
       NSLog(@"Found feature called %@ at %@.", response.name, response.location);
@@ -111,6 +106,19 @@
   [service getFeatureWithRequest:[RTGPoint message] handler:handler];
 }
 
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  // This only needs to be done once per host, before creating service objects for that host.
+  [GRPCCall useInsecureConnectionsForHost:kHostAddress];
+
+  service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+  [self execRequest];
+}
+
 @end
 
 
@@ -120,16 +128,15 @@
  * Run the listFeatures demo. Calls listFeatures with a rectangle containing all of the features in
  * the pre-generated database. Prints each response as it comes in.
  */
-@interface ListFeaturesViewController : UIViewController
+@interface ListFeaturesViewController : UIViewController {
+  RTGRouteGuide *service;
+}
+
 @end
 
 @implementation ListFeaturesViewController
 
-- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  RTGRouteGuide *service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
-
+- (void)execRequest {
   RTGRectangle *rectangle = [RTGRectangle message];
   rectangle.lo.latitude = 405E6;
   rectangle.lo.longitude = -750E6;
@@ -147,6 +154,16 @@
   }];
 }
 
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+  [self execRequest];
+}
+
 @end
 
 
@@ -157,14 +174,15 @@
  * database with a variable delay in between. Prints the statistics when they are sent from the
  * server.
  */
-@interface RecordRouteViewController : UIViewController
+@interface RecordRouteViewController : UIViewController {
+  RTGRouteGuide *service;
+}
+
 @end
 
 @implementation RecordRouteViewController
 
-- (void)viewDidLoad {
-  [super viewDidLoad];
-
+- (void)execRequest {
   NSString *dataBasePath = [NSBundle.mainBundle pathForResource:@"route_guide_db"
                                                          ofType:@"json"];
   NSData *dataBaseContent = [NSData dataWithContentsOfFile:dataBasePath];
@@ -178,8 +196,6 @@
     return location;
   }];
 
-  RTGRouteGuide *service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
-
   [service recordRouteWithRequestsWriter:locations
                                  handler:^(RTGRouteSummary *response, NSError *error) {
     if (response) {
@@ -193,6 +209,16 @@
   }];
 }
 
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+  [self execRequest];
+}
+
 @end
 
 
@@ -202,14 +228,15 @@
  * Run the routeChat demo. Send some chat messages, and print any chat messages that are sent from
  * the server.
  */
-@interface RouteChatViewController : UIViewController
+@interface RouteChatViewController : UIViewController {
+  RTGRouteGuide *service;
+}
+
 @end
 
 @implementation RouteChatViewController
 
-- (void)viewDidLoad {
-  [super viewDidLoad];
-
+- (void)execRequest {
   NSArray *notes = @[[RTGRouteNote noteWithMessage:@"First message" latitude:0 longitude:0],
                      [RTGRouteNote noteWithMessage:@"Second message" latitude:0 longitude:1],
                      [RTGRouteNote noteWithMessage:@"Third message" latitude:1 longitude:0],
@@ -219,8 +246,6 @@
     return note;
   }];
 
-  RTGRouteGuide *service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
-
   [service routeChatWithRequestsWriter:notesWriter
                           eventHandler:^(BOOL done, RTGRouteNote *note, NSError *error) {
     if (note) {
@@ -234,4 +259,14 @@
   }];
 }
 
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  service = [[RTGRouteGuide alloc] initWithHost:kHostAddress];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+  [self execRequest];
+}
+
 @end
diff --git a/gRPC.podspec b/gRPC.podspec
index 018306c..3937332 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -36,7 +36,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '0.12.0'
+  version = '0.14.0'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'http://www.grpc.io'
@@ -44,7 +44,8 @@
   s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
   s.source = { :git => 'https://github.com/grpc/grpc.git',
-               :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}" }
+               :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+               :submodules => true }
 
 
   s.ios.deployment_target = '7.1'
@@ -287,44 +288,8 @@
                       'src/core/ext/client_config/subchannel_call_holder.h',
                       'src/core/ext/client_config/subchannel_index.h',
                       'src/core/ext/client_config/uri_parser.h',
-                      'include/grpc/byte_buffer.h',
-                      'include/grpc/grpc.h',
-                      'include/grpc/impl/codegen/alloc.h',
-                      'include/grpc/impl/codegen/atm.h',
-                      'include/grpc/impl/codegen/atm_gcc_atomic.h',
-                      'include/grpc/impl/codegen/atm_gcc_sync.h',
-                      'include/grpc/impl/codegen/atm_win32.h',
-                      'include/grpc/impl/codegen/byte_buffer.h',
-                      'include/grpc/impl/codegen/compression_types.h',
-                      'include/grpc/impl/codegen/connectivity_state.h',
-                      'include/grpc/impl/codegen/grpc_types.h',
-                      'include/grpc/impl/codegen/log.h',
-                      'include/grpc/impl/codegen/port_platform.h',
-                      'include/grpc/impl/codegen/propagation_bits.h',
-                      'include/grpc/impl/codegen/slice.h',
-                      'include/grpc/impl/codegen/slice_buffer.h',
-                      'include/grpc/impl/codegen/status.h',
-                      'include/grpc/impl/codegen/sync.h',
-                      'include/grpc/impl/codegen/sync_generic.h',
-                      'include/grpc/impl/codegen/sync_posix.h',
-                      'include/grpc/impl/codegen/sync_win32.h',
-                      'include/grpc/impl/codegen/time.h',
-                      'include/grpc/status.h',
-                      'include/grpc/support/alloc.h',
-                      'include/grpc/support/atm.h',
-                      'include/grpc/support/host_port.h',
-                      'include/grpc/support/log.h',
-                      'include/grpc/support/port_platform.h',
-                      'include/grpc/support/slice.h',
-                      'include/grpc/support/slice_buffer.h',
-                      'include/grpc/support/string_util.h',
-                      'include/grpc/support/sync.h',
-                      'include/grpc/support/time.h',
-                      'include/grpc/support/useful.h',
-                      'src/core/lib/support/string.h',
-                      'third_party/objective_c/Cronet/cronet_c_for_grpc.h',
                       'src/core/ext/lb_policy/grpclb/load_balancer_api.h',
-                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h',
+                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
                       'third_party/nanopb/pb.h',
                       'third_party/nanopb/pb_common.h',
                       'third_party/nanopb/pb_decode.h',
@@ -361,7 +326,6 @@
                       'include/grpc/impl/codegen/sync_posix.h',
                       'include/grpc/impl/codegen/sync_win32.h',
                       'include/grpc/impl/codegen/time.h',
-                      'include/grpc/grpc_cronet.h',
                       'include/grpc/grpc_security.h',
                       'include/grpc/grpc_security_constants.h',
                       'include/grpc/census.h',
@@ -511,11 +475,8 @@
                       'src/core/ext/client_config/uri_parser.c',
                       'src/core/ext/transport/chttp2/server/insecure/server_chttp2.c',
                       'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
-                      'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-                      'src/core/ext/transport/cronet/transport/cronet_api_dummy.c',
-                      'src/core/ext/transport/cronet/transport/cronet_transport.c',
                       'src/core/ext/lb_policy/grpclb/load_balancer_api.c',
-                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c',
+                      'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
                       'third_party/nanopb/pb_common.c',
                       'third_party/nanopb/pb_decode.c',
                       'third_party/nanopb/pb_encode.c',
@@ -670,44 +631,8 @@
                               'src/core/ext/client_config/subchannel_call_holder.h',
                               'src/core/ext/client_config/subchannel_index.h',
                               'src/core/ext/client_config/uri_parser.h',
-                              'include/grpc/byte_buffer.h',
-                              'include/grpc/grpc.h',
-                              'include/grpc/impl/codegen/alloc.h',
-                              'include/grpc/impl/codegen/atm.h',
-                              'include/grpc/impl/codegen/atm_gcc_atomic.h',
-                              'include/grpc/impl/codegen/atm_gcc_sync.h',
-                              'include/grpc/impl/codegen/atm_win32.h',
-                              'include/grpc/impl/codegen/byte_buffer.h',
-                              'include/grpc/impl/codegen/compression_types.h',
-                              'include/grpc/impl/codegen/connectivity_state.h',
-                              'include/grpc/impl/codegen/grpc_types.h',
-                              'include/grpc/impl/codegen/log.h',
-                              'include/grpc/impl/codegen/port_platform.h',
-                              'include/grpc/impl/codegen/propagation_bits.h',
-                              'include/grpc/impl/codegen/slice.h',
-                              'include/grpc/impl/codegen/slice_buffer.h',
-                              'include/grpc/impl/codegen/status.h',
-                              'include/grpc/impl/codegen/sync.h',
-                              'include/grpc/impl/codegen/sync_generic.h',
-                              'include/grpc/impl/codegen/sync_posix.h',
-                              'include/grpc/impl/codegen/sync_win32.h',
-                              'include/grpc/impl/codegen/time.h',
-                              'include/grpc/status.h',
-                              'include/grpc/support/alloc.h',
-                              'include/grpc/support/atm.h',
-                              'include/grpc/support/host_port.h',
-                              'include/grpc/support/log.h',
-                              'include/grpc/support/port_platform.h',
-                              'include/grpc/support/slice.h',
-                              'include/grpc/support/slice_buffer.h',
-                              'include/grpc/support/string_util.h',
-                              'include/grpc/support/sync.h',
-                              'include/grpc/support/time.h',
-                              'include/grpc/support/useful.h',
-                              'src/core/lib/support/string.h',
-                              'third_party/objective_c/Cronet/cronet_c_for_grpc.h',
                               'src/core/ext/lb_policy/grpclb/load_balancer_api.h',
-                              'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h',
+                              'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
                               'third_party/nanopb/pb.h',
                               'third_party/nanopb/pb_common.h',
                               'third_party/nanopb/pb_decode.h',
@@ -731,7 +656,7 @@
 
     ss.requires_arc = false
     ss.libraries = 'z'
-    ss.dependency 'BoringSSL', '~> 2.0'
+    ss.dependency 'BoringSSL', '~> 3.0'
 
     # ss.compiler_flags = '-GCC_WARN_INHIBIT_ALL_WARNINGS', '-w'
   end
diff --git a/grpc.def b/grpc.def
index 09a94a6..61948ed 100644
--- a/grpc.def
+++ b/grpc.def
@@ -87,7 +87,6 @@
     grpc_header_nonbin_value_is_legal
     grpc_is_binary_header
     grpc_call_error_to_string
-    grpc_cronet_secure_channel_create
     grpc_auth_property_iterator_next
     grpc_auth_context_property_iterator
     grpc_auth_context_peer_identity
diff --git a/grpc.gemspec b/grpc.gemspec
index ace2871..240ea1c 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -169,7 +169,6 @@
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
   s.files += %w( include/grpc/impl/codegen/sync_win32.h )
   s.files += %w( include/grpc/impl/codegen/time.h )
-  s.files += %w( include/grpc/grpc_cronet.h )
   s.files += %w( include/grpc/grpc_security.h )
   s.files += %w( include/grpc/grpc_security_constants.h )
   s.files += %w( include/grpc/census.h )
@@ -297,44 +296,8 @@
   s.files += %w( src/core/ext/client_config/subchannel_call_holder.h )
   s.files += %w( src/core/ext/client_config/subchannel_index.h )
   s.files += %w( src/core/ext/client_config/uri_parser.h )
-  s.files += %w( include/grpc/byte_buffer.h )
-  s.files += %w( include/grpc/grpc.h )
-  s.files += %w( include/grpc/impl/codegen/alloc.h )
-  s.files += %w( include/grpc/impl/codegen/atm.h )
-  s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
-  s.files += %w( include/grpc/impl/codegen/atm_gcc_sync.h )
-  s.files += %w( include/grpc/impl/codegen/atm_win32.h )
-  s.files += %w( include/grpc/impl/codegen/byte_buffer.h )
-  s.files += %w( include/grpc/impl/codegen/compression_types.h )
-  s.files += %w( include/grpc/impl/codegen/connectivity_state.h )
-  s.files += %w( include/grpc/impl/codegen/grpc_types.h )
-  s.files += %w( include/grpc/impl/codegen/log.h )
-  s.files += %w( include/grpc/impl/codegen/port_platform.h )
-  s.files += %w( include/grpc/impl/codegen/propagation_bits.h )
-  s.files += %w( include/grpc/impl/codegen/slice.h )
-  s.files += %w( include/grpc/impl/codegen/slice_buffer.h )
-  s.files += %w( include/grpc/impl/codegen/status.h )
-  s.files += %w( include/grpc/impl/codegen/sync.h )
-  s.files += %w( include/grpc/impl/codegen/sync_generic.h )
-  s.files += %w( include/grpc/impl/codegen/sync_posix.h )
-  s.files += %w( include/grpc/impl/codegen/sync_win32.h )
-  s.files += %w( include/grpc/impl/codegen/time.h )
-  s.files += %w( include/grpc/status.h )
-  s.files += %w( include/grpc/support/alloc.h )
-  s.files += %w( include/grpc/support/atm.h )
-  s.files += %w( include/grpc/support/host_port.h )
-  s.files += %w( include/grpc/support/log.h )
-  s.files += %w( include/grpc/support/port_platform.h )
-  s.files += %w( include/grpc/support/slice.h )
-  s.files += %w( include/grpc/support/slice_buffer.h )
-  s.files += %w( include/grpc/support/string_util.h )
-  s.files += %w( include/grpc/support/sync.h )
-  s.files += %w( include/grpc/support/time.h )
-  s.files += %w( include/grpc/support/useful.h )
-  s.files += %w( src/core/lib/support/string.h )
-  s.files += %w( third_party/objective_c/Cronet/cronet_c_for_grpc.h )
   s.files += %w( src/core/ext/lb_policy/grpclb/load_balancer_api.h )
-  s.files += %w( src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h )
+  s.files += %w( src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h )
   s.files += %w( third_party/nanopb/pb.h )
   s.files += %w( third_party/nanopb/pb_common.h )
   s.files += %w( third_party/nanopb/pb_decode.h )
@@ -491,11 +454,8 @@
   s.files += %w( src/core/ext/client_config/uri_parser.c )
   s.files += %w( src/core/ext/transport/chttp2/server/insecure/server_chttp2.c )
   s.files += %w( src/core/ext/transport/chttp2/client/insecure/channel_create.c )
-  s.files += %w( src/core/ext/transport/cronet/client/secure/cronet_channel_create.c )
-  s.files += %w( src/core/ext/transport/cronet/transport/cronet_api_dummy.c )
-  s.files += %w( src/core/ext/transport/cronet/transport/cronet_transport.c )
   s.files += %w( src/core/ext/lb_policy/grpclb/load_balancer_api.c )
-  s.files += %w( src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c )
+  s.files += %w( src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c )
   s.files += %w( third_party/nanopb/pb_common.c )
   s.files += %w( third_party/nanopb/pb_decode.c )
   s.files += %w( third_party/nanopb/pb_encode.c )
diff --git a/include/grpc++/impl/codegen/method_handler_impl.h b/include/grpc++/impl/codegen/method_handler_impl.h
index ad74efa..21ac6c4 100644
--- a/include/grpc++/impl/codegen/method_handler_impl.h
+++ b/include/grpc++/impl/codegen/method_handler_impl.h
@@ -44,10 +44,10 @@
 template <class ServiceType, class RequestType, class ResponseType>
 class RpcMethodHandler : public MethodHandler {
  public:
-  RpcMethodHandler(
-      std::function<Status(ServiceType*, ServerContext*, const RequestType*,
-                           ResponseType*)> func,
-      ServiceType* service)
+  RpcMethodHandler(std::function<Status(ServiceType*, ServerContext*,
+                                        const RequestType*, ResponseType*)>
+                       func,
+                   ServiceType* service)
       : func_(func), service_(service) {}
 
   void RunHandler(const HandlerParameter& param) GRPC_FINAL {
@@ -88,7 +88,8 @@
  public:
   ClientStreamingHandler(
       std::function<Status(ServiceType*, ServerContext*,
-                           ServerReader<RequestType>*, ResponseType*)> func,
+                           ServerReader<RequestType>*, ResponseType*)>
+          func,
       ServiceType* service)
       : func_(func), service_(service) {}
 
@@ -124,7 +125,8 @@
  public:
   ServerStreamingHandler(
       std::function<Status(ServiceType*, ServerContext*, const RequestType*,
-                           ServerWriter<ResponseType>*)> func,
+                           ServerWriter<ResponseType>*)>
+          func,
       ServiceType* service)
       : func_(func), service_(service) {}
 
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index 7b20cc1..af3d0c2 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -152,6 +152,8 @@
    channel). If this parameter is specified and the underlying is not an SSL
    channel, it will just be ignored. */
 #define GRPC_SSL_TARGET_NAME_OVERRIDE_ARG "grpc.ssl_target_name_override"
+/* Maximum metadata size */
+#define GRPC_ARG_MAX_METADATA_SIZE "grpc.max_metadata_size"
 
 /** Result of a grpc call. If the caller satisfies the prerequisites of a
     particular operation, the grpc_call_error returned will be GRPC_CALL_OK.
diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h
index 1229d48..d2d9ac7 100644
--- a/include/grpc/impl/codegen/port_platform.h
+++ b/include/grpc/impl/codegen/port_platform.h
@@ -114,6 +114,38 @@
 #define GPR_WIN32_ATOMIC 1
 #define GPR_MSVC_TLS 1
 #endif
+#elif defined(GPR_MANYLINUX1)
+// TODO(atash): manylinux1 is just another __linux__ but with ancient
+// libraries; it should be integrated with the `__linux__` definitions below.
+#define GPR_PLATFORM_STRING "manylinux"
+#define GPR_POSIX_CRASH_HANDLER 1
+#define GPR_CPU_LINUX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_LINUX 1
+#define GPR_LINUX_LOG 1
+#define GPR_POSIX_SOCKET 1
+#define GPR_POSIX_WAKEUP_FD 1
+#define GPR_POSIX_SOCKETADDR 1
+#define GPR_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GPR_POSIX_SOCKETUTILS 1
+#define GPR_HAVE_UNIX_SOCKET 1
+#define GPR_HAVE_IP_PKTINFO 1
+#define GPR_HAVE_IPV6_RECVPKTINFO 1
+#define GPR_LINUX_ENV 1
+#define GPR_POSIX_FILE 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#define GPR_HAVE_MSG_NOSIGNAL 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
 #elif defined(ANDROID) || defined(__ANDROID__)
 #define GPR_PLATFORM_STRING "android"
 #define GPR_ANDROID 1
diff --git a/include/grpc/impl/codegen/slice_buffer.h b/include/grpc/impl/codegen/slice_buffer.h
index 8ca51ba..7858021 100644
--- a/include/grpc/impl/codegen/slice_buffer.h
+++ b/include/grpc/impl/codegen/slice_buffer.h
@@ -42,9 +42,8 @@
 
 #define GRPC_SLICE_BUFFER_INLINE_ELEMENTS 8
 
-/* Represents an expandable array of slices, to be interpreted as a single item
-   TODO(ctiller): inline some small number of elements into the struct, to
-                  avoid per-call allocations */
+/* Represents an expandable array of slices, to be interpreted as a
+   single item. */
 typedef struct {
   /* slices in the array */
   gpr_slice *slices;
diff --git a/package.json b/package.json
index 54a44ca..5bdaa76 100644
--- a/package.json
+++ b/package.json
@@ -67,6 +67,8 @@
     "src/node/ext",
     "include/grpc",
     "src/core",
+    "src/boringssl",
+    "src/zlib",
     "third_party/nanopb",
     "third_party/zlib",
     "third_party/boringssl",
diff --git a/package.xml b/package.xml
index 152d5d6..4c159e6 100644
--- a/package.xml
+++ b/package.xml
@@ -176,7 +176,6 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_win32.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/time.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/grpc_cronet.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_security.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_security_constants.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/census.h" role="src" />
@@ -304,44 +303,8 @@
     <file baseinstalldir="/" name="src/core/ext/client_config/subchannel_call_holder.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_config/subchannel_index.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_config/uri_parser.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/byte_buffer.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/grpc.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/alloc.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/atm.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_sync.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_win32.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/connectivity_state.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/grpc_types.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/log.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/propagation_bits.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/slice.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/slice_buffer.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/status.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_win32.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/time.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/status.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/alloc.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/atm.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/host_port.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/log.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/port_platform.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/slice.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/slice_buffer.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/string_util.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/sync.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/time.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/useful.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string.h" role="src" />
-    <file baseinstalldir="/" name="third_party/objective_c/Cronet/cronet_c_for_grpc.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/load_balancer_api.h" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb.h" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_common.h" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_decode.h" role="src" />
@@ -498,11 +461,8 @@
     <file baseinstalldir="/" name="src/core/ext/client_config/uri_parser.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/server/insecure/server_chttp2.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/client/insecure/channel_create.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/transport/cronet/client/secure/cronet_channel_create.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/transport/cronet/transport/cronet_api_dummy.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/transport/cronet/transport/cronet_transport.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/load_balancer_api.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_common.c" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_decode.c" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_encode.c" role="src" />
diff --git a/setup.py b/setup.py
index 5cd2612..f96824f 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,6 @@
 
 # Break import-style to ensure we can actually find our in-repo dependencies.
 import commands
-import precompiled
 import grpc_core_dependencies
 import grpc_version
 
@@ -173,7 +172,6 @@
     'build_project_metadata': commands.BuildProjectMetadata,
     'build_py': commands.BuildPy,
     'build_ext': commands.BuildExt,
-    'build_tagged_ext': precompiled.BuildTaggedExt,
     'gather': commands.Gather,
     'run_interop': commands.RunInterop,
     'test_lite': commands.TestLite
@@ -229,25 +227,21 @@
   PACKAGES = setuptools.find_packages(
       PYTHON_STEM, exclude=['tests', 'tests.*'])
 
-setup_arguments = {
-    'name': 'grpcio',
-    'version': grpc_version.VERSION,
-    'license': LICENSE,
-    'ext_modules': CYTHON_EXTENSION_MODULES,
-    'packages': list(PACKAGES),
-    'package_dir': PACKAGE_DIRECTORIES,
-    # TODO(atash): Figure out why auditwheel doesn't like namespace packages.
-    #'namespace_packages': ['grpc'],
-    'package_data': PACKAGE_DATA,
-    'install_requires': INSTALL_REQUIRES,
-    'setup_requires': SETUP_REQUIRES,
-    'cmdclass': COMMAND_CLASS,
-    'tests_require': TESTS_REQUIRE,
-    'test_suite': TEST_SUITE,
-    'test_loader': TEST_LOADER,
-    'test_runner': TEST_RUNNER,
-}
-
-precompiled.update_setup_arguments(setup_arguments)
-
-setuptools.setup(**setup_arguments)
+setuptools.setup(
+  name='grpcio',
+  version=grpc_version.VERSION,
+  license=LICENSE,
+  ext_modules=CYTHON_EXTENSION_MODULES,
+  packages=list(PACKAGES),
+  package_dir=PACKAGE_DIRECTORIES,
+  # TODO(atash): Figure out why auditwheel doesn't like namespace packages.
+  #namespace_packages=['grpc'],
+  package_data=PACKAGE_DATA,
+  install_requires=INSTALL_REQUIRES,
+  setup_requires=SETUP_REQUIRES,
+  cmdclass=COMMAND_CLASS,
+  tests_require=TESTS_REQUIRE,
+  test_suite=TEST_SUITE,
+  test_loader=TEST_LOADER,
+  test_runner=TEST_RUNNER,
+)
diff --git a/src/compiler/csharp_generator.cc b/src/compiler/csharp_generator.cc
index ac0fee1..29c359c 100644
--- a/src/compiler/csharp_generator.cc
+++ b/src/compiler/csharp_generator.cc
@@ -214,10 +214,10 @@
   switch (GetMethodType(method)) {
     case METHODTYPE_NO_STREAMING:
     case METHODTYPE_CLIENT_STREAMING:
-      return "Task<" + GetClassName(method->output_type()) + ">";
+      return "global::System.Threading.Tasks.Task<" + GetClassName(method->output_type()) + ">";
     case METHODTYPE_SERVER_STREAMING:
     case METHODTYPE_BIDI_STREAMING:
-      return "Task";
+      return "global::System.Threading.Tasks.Task";
   }
   GOOGLE_LOG(FATAL)<< "Can't get here.";
   return "";
diff --git a/src/compiler/ruby_generator.cc b/src/compiler/ruby_generator.cc
index 5ac56ad..936a186 100644
--- a/src/compiler/ruby_generator.cc
+++ b/src/compiler/ruby_generator.cc
@@ -98,8 +98,8 @@
   out->Print("self.marshal_class_method = :encode\n");
   out->Print("self.unmarshal_class_method = :decode\n");
   std::map<grpc::string, grpc::string> pkg_vars =
-      ListToDict({"service.name", service->name(), "pkg.name", package, });
-  out->Print(pkg_vars, "self.service_name = '$pkg.name$.$service.name$'\n");
+      ListToDict({"service_full_name", service->full_name()});
+  out->Print(pkg_vars, "self.service_name = '$service_full_name$'\n");
   out->Print("\n");
   for (int i = 0; i < service->method_count(); ++i) {
     PrintMethod(service->method(i), package, out);
diff --git a/src/core/ext/client_config/subchannel_call_holder.c b/src/core/ext/client_config/subchannel_call_holder.c
index 9918fbd..91fa917 100644
--- a/src/core/ext/client_config/subchannel_call_holder.c
+++ b/src/core/ext/client_config/subchannel_call_holder.c
@@ -174,6 +174,7 @@
              GRPC_SUBCHANNEL_CALL_HOLDER_PICKING_SUBCHANNEL);
   holder->creation_phase = GRPC_SUBCHANNEL_CALL_HOLDER_NOT_CREATING;
   if (holder->connected_subchannel == NULL) {
+    gpr_atm_no_barrier_store(&holder->subchannel_call, 1);
     fail_locked(exec_ctx, holder);
   } else if (1 == gpr_atm_acq_load(&holder->subchannel_call)) {
     /* already cancelled before subchannel became ready */
diff --git a/src/core/ext/lb_policy/grpclb/load_balancer_api.c b/src/core/ext/lb_policy/grpclb/load_balancer_api.c
index 459d6d9..59b8999 100644
--- a/src/core/ext/lb_policy/grpclb/load_balancer_api.c
+++ b/src/core/ext/lb_policy/grpclb/load_balancer_api.c
@@ -50,7 +50,7 @@
   decode_serverlist_arg *dec_arg = *arg;
   if (dec_arg->first_pass != 0) { /* first pass */
     grpc_grpclb_server server;
-    if (!pb_decode(stream, grpc_lb_v0_Server_fields, &server)) {
+    if (!pb_decode(stream, grpc_lb_v1_Server_fields, &server)) {
       return false;
     }
     dec_arg->num_servers++;
@@ -61,7 +61,7 @@
       dec_arg->servers =
           gpr_malloc(sizeof(grpc_grpclb_server *) * dec_arg->num_servers);
     }
-    if (!pb_decode(stream, grpc_lb_v0_Server_fields, server)) {
+    if (!pb_decode(stream, grpc_lb_v1_Server_fields, server)) {
       return false;
     }
     dec_arg->servers[dec_arg->i++] = server;
@@ -87,13 +87,13 @@
   pb_ostream_t outputstream;
   gpr_slice slice;
   memset(&sizestream, 0, sizeof(pb_ostream_t));
-  pb_encode(&sizestream, grpc_lb_v0_LoadBalanceRequest_fields, request);
+  pb_encode(&sizestream, grpc_lb_v1_LoadBalanceRequest_fields, request);
   encoded_length = sizestream.bytes_written;
 
   slice = gpr_slice_malloc(encoded_length);
   outputstream =
       pb_ostream_from_buffer(GPR_SLICE_START_PTR(slice), encoded_length);
-  GPR_ASSERT(pb_encode(&outputstream, grpc_lb_v0_LoadBalanceRequest_fields,
+  GPR_ASSERT(pb_encode(&outputstream, grpc_lb_v1_LoadBalanceRequest_fields,
                        request) != 0);
   return slice;
 }
@@ -109,7 +109,7 @@
                              GPR_SLICE_LENGTH(encoded_response));
   grpc_grpclb_response *res = gpr_malloc(sizeof(grpc_grpclb_response));
   memset(res, 0, sizeof(*res));
-  status = pb_decode(&stream, grpc_lb_v0_LoadBalanceResponse_fields, res);
+  status = pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, res);
   if (!status) {
     grpc_grpclb_response_destroy(res);
     return NULL;
@@ -132,7 +132,7 @@
   res->server_list.servers.funcs.decode = decode_serverlist;
   res->server_list.servers.arg = &arg;
   arg.first_pass = 1;
-  status = pb_decode(&stream, grpc_lb_v0_LoadBalanceResponse_fields, res);
+  status = pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, res);
   if (!status) {
     grpc_grpclb_response_destroy(res);
     return NULL;
@@ -140,7 +140,7 @@
 
   arg.first_pass = 0;
   status =
-      pb_decode(&stream_at_start, grpc_lb_v0_LoadBalanceResponse_fields, res);
+      pb_decode(&stream_at_start, grpc_lb_v1_LoadBalanceResponse_fields, res);
   if (!status) {
     grpc_grpclb_response_destroy(res);
     return NULL;
diff --git a/src/core/ext/lb_policy/grpclb/load_balancer_api.h b/src/core/ext/lb_policy/grpclb/load_balancer_api.h
index 968f7d2..71b5616 100644
--- a/src/core/ext/lb_policy/grpclb/load_balancer_api.h
+++ b/src/core/ext/lb_policy/grpclb/load_balancer_api.h
@@ -37,7 +37,7 @@
 #include <grpc/support/slice_buffer.h>
 
 #include "src/core/ext/client_config/lb_policy_factory.h"
-#include "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h"
+#include "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -45,10 +45,10 @@
 
 #define GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH 128
 
-typedef grpc_lb_v0_LoadBalanceRequest grpc_grpclb_request;
-typedef grpc_lb_v0_LoadBalanceResponse grpc_grpclb_response;
-typedef grpc_lb_v0_Server grpc_grpclb_server;
-typedef grpc_lb_v0_Duration grpc_grpclb_duration;
+typedef grpc_lb_v1_LoadBalanceRequest grpc_grpclb_request;
+typedef grpc_lb_v1_LoadBalanceResponse grpc_grpclb_response;
+typedef grpc_lb_v1_Server grpc_grpclb_server;
+typedef grpc_lb_v1_Duration grpc_grpclb_duration;
 typedef struct grpc_grpclb_serverlist {
   grpc_grpclb_server **servers;
   size_t num_servers;
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c
deleted file mode 100644
index 9719673..0000000
--- a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-/* Automatically generated nanopb constant definitions */
-/* Generated by nanopb-0.3.5-dev */
-
-#include "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h"
-
-#if PB_PROTO_HEADER_VERSION != 30
-#error Regenerate this file with the current version of nanopb generator.
-#endif
-
-
-
-const pb_field_t grpc_lb_v0_Duration_fields[3] = {
-    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_Duration, seconds, seconds, 0),
-    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_Duration, nanos, seconds, 0),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_LoadBalanceRequest_fields[3] = {
-    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_LoadBalanceRequest, initial_request, initial_request, &grpc_lb_v0_InitialLoadBalanceRequest_fields),
-    PB_FIELD(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_LoadBalanceRequest, client_stats, initial_request, &grpc_lb_v0_ClientStats_fields),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_InitialLoadBalanceRequest_fields[2] = {
-    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_InitialLoadBalanceRequest, name, name, 0),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_ClientStats_fields[4] = {
-    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_ClientStats, total_requests, total_requests, 0),
-    PB_FIELD(  2, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_ClientStats, client_rpc_errors, total_requests, 0),
-    PB_FIELD(  3, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_ClientStats, dropped_requests, client_rpc_errors, 0),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_LoadBalanceResponse_fields[3] = {
-    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_LoadBalanceResponse, initial_response, initial_response, &grpc_lb_v0_InitialLoadBalanceResponse_fields),
-    PB_FIELD(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_LoadBalanceResponse, server_list, initial_response, &grpc_lb_v0_ServerList_fields),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_InitialLoadBalanceResponse_fields[4] = {
-    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_InitialLoadBalanceResponse, client_config, client_config, 0),
-    PB_FIELD(  2, STRING  , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_InitialLoadBalanceResponse, load_balancer_delegate, client_config, 0),
-    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_InitialLoadBalanceResponse, client_stats_report_interval, load_balancer_delegate, &grpc_lb_v0_Duration_fields),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_ServerList_fields[3] = {
-    PB_FIELD(  1, MESSAGE , REPEATED, CALLBACK, FIRST, grpc_lb_v0_ServerList, servers, servers, &grpc_lb_v0_Server_fields),
-    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_ServerList, expiration_interval, servers, &grpc_lb_v0_Duration_fields),
-    PB_LAST_FIELD
-};
-
-const pb_field_t grpc_lb_v0_Server_fields[5] = {
-    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v0_Server, ip_address, ip_address, 0),
-    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_Server, port, ip_address, 0),
-    PB_FIELD(  3, BYTES   , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_Server, load_balance_token, port, 0),
-    PB_FIELD(  4, BOOL    , OPTIONAL, STATIC  , OTHER, grpc_lb_v0_Server, drop_request, load_balance_token, 0),
-    PB_LAST_FIELD
-};
-
-
-/* Check that field information fits in pb_field_t */
-#if !defined(PB_FIELD_32BIT)
-/* If you get an error here, it means that you need to define PB_FIELD_32BIT
- * compile-time option. You can do that in pb.h or on compiler command line.
- * 
- * The reason you need to do this is that some of your messages contain tag
- * numbers or field sizes that are larger than what can fit in 8 or 16 bit
- * field descriptors.
- */
-PB_STATIC_ASSERT((pb_membersize(grpc_lb_v0_LoadBalanceRequest, initial_request) < 65536 && pb_membersize(grpc_lb_v0_LoadBalanceRequest, client_stats) < 65536 && pb_membersize(grpc_lb_v0_LoadBalanceResponse, initial_response) < 65536 && pb_membersize(grpc_lb_v0_LoadBalanceResponse, server_list) < 65536 && pb_membersize(grpc_lb_v0_InitialLoadBalanceResponse, client_stats_report_interval) < 65536 && pb_membersize(grpc_lb_v0_ServerList, servers) < 65536 && pb_membersize(grpc_lb_v0_ServerList, expiration_interval) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_grpc_lb_v0_Duration_grpc_lb_v0_LoadBalanceRequest_grpc_lb_v0_InitialLoadBalanceRequest_grpc_lb_v0_ClientStats_grpc_lb_v0_LoadBalanceResponse_grpc_lb_v0_InitialLoadBalanceResponse_grpc_lb_v0_ServerList_grpc_lb_v0_Server)
-#endif
-
-#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
-/* If you get an error here, it means that you need to define PB_FIELD_16BIT
- * compile-time option. You can do that in pb.h or on compiler command line.
- * 
- * The reason you need to do this is that some of your messages contain tag
- * numbers or field sizes that are larger than what can fit in the default
- * 8 bit descriptors.
- */
-PB_STATIC_ASSERT((pb_membersize(grpc_lb_v0_LoadBalanceRequest, initial_request) < 256 && pb_membersize(grpc_lb_v0_LoadBalanceRequest, client_stats) < 256 && pb_membersize(grpc_lb_v0_LoadBalanceResponse, initial_response) < 256 && pb_membersize(grpc_lb_v0_LoadBalanceResponse, server_list) < 256 && pb_membersize(grpc_lb_v0_InitialLoadBalanceResponse, client_stats_report_interval) < 256 && pb_membersize(grpc_lb_v0_ServerList, servers) < 256 && pb_membersize(grpc_lb_v0_ServerList, expiration_interval) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_grpc_lb_v0_Duration_grpc_lb_v0_LoadBalanceRequest_grpc_lb_v0_InitialLoadBalanceRequest_grpc_lb_v0_ClientStats_grpc_lb_v0_LoadBalanceResponse_grpc_lb_v0_InitialLoadBalanceResponse_grpc_lb_v0_ServerList_grpc_lb_v0_Server)
-#endif
-
-
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h
deleted file mode 100644
index 3599f88..0000000
--- a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-/* Automatically generated nanopb header */
-/* Generated by nanopb-0.3.5-dev */
-
-#ifndef PB_LOAD_BALANCER_PB_H_INCLUDED
-#define PB_LOAD_BALANCER_PB_H_INCLUDED
-#include "third_party/nanopb/pb.h"
-#if PB_PROTO_HEADER_VERSION != 30
-#error Regenerate this file with the current version of nanopb generator.
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Struct definitions */
-typedef struct _grpc_lb_v0_ClientStats {
-    bool has_total_requests;
-    int64_t total_requests;
-    bool has_client_rpc_errors;
-    int64_t client_rpc_errors;
-    bool has_dropped_requests;
-    int64_t dropped_requests;
-} grpc_lb_v0_ClientStats;
-
-typedef struct _grpc_lb_v0_Duration {
-    bool has_seconds;
-    int64_t seconds;
-    bool has_nanos;
-    int32_t nanos;
-} grpc_lb_v0_Duration;
-
-typedef struct _grpc_lb_v0_InitialLoadBalanceRequest {
-    bool has_name;
-    char name[128];
-} grpc_lb_v0_InitialLoadBalanceRequest;
-
-typedef PB_BYTES_ARRAY_T(64) grpc_lb_v0_Server_load_balance_token_t;
-typedef struct _grpc_lb_v0_Server {
-    bool has_ip_address;
-    char ip_address[46];
-    bool has_port;
-    int32_t port;
-    bool has_load_balance_token;
-    grpc_lb_v0_Server_load_balance_token_t load_balance_token;
-    bool has_drop_request;
-    bool drop_request;
-} grpc_lb_v0_Server;
-
-typedef struct _grpc_lb_v0_InitialLoadBalanceResponse {
-    bool has_client_config;
-    char client_config[64];
-    bool has_load_balancer_delegate;
-    char load_balancer_delegate[64];
-    bool has_client_stats_report_interval;
-    grpc_lb_v0_Duration client_stats_report_interval;
-} grpc_lb_v0_InitialLoadBalanceResponse;
-
-typedef struct _grpc_lb_v0_LoadBalanceRequest {
-    bool has_initial_request;
-    grpc_lb_v0_InitialLoadBalanceRequest initial_request;
-    bool has_client_stats;
-    grpc_lb_v0_ClientStats client_stats;
-} grpc_lb_v0_LoadBalanceRequest;
-
-typedef struct _grpc_lb_v0_ServerList {
-    pb_callback_t servers;
-    bool has_expiration_interval;
-    grpc_lb_v0_Duration expiration_interval;
-} grpc_lb_v0_ServerList;
-
-typedef struct _grpc_lb_v0_LoadBalanceResponse {
-    bool has_initial_response;
-    grpc_lb_v0_InitialLoadBalanceResponse initial_response;
-    bool has_server_list;
-    grpc_lb_v0_ServerList server_list;
-} grpc_lb_v0_LoadBalanceResponse;
-
-/* Default values for struct fields */
-
-/* Initializer values for message structs */
-#define grpc_lb_v0_Duration_init_default         {false, 0, false, 0}
-#define grpc_lb_v0_LoadBalanceRequest_init_default {false, grpc_lb_v0_InitialLoadBalanceRequest_init_default, false, grpc_lb_v0_ClientStats_init_default}
-#define grpc_lb_v0_InitialLoadBalanceRequest_init_default {false, ""}
-#define grpc_lb_v0_ClientStats_init_default      {false, 0, false, 0, false, 0}
-#define grpc_lb_v0_LoadBalanceResponse_init_default {false, grpc_lb_v0_InitialLoadBalanceResponse_init_default, false, grpc_lb_v0_ServerList_init_default}
-#define grpc_lb_v0_InitialLoadBalanceResponse_init_default {false, "", false, "", false, grpc_lb_v0_Duration_init_default}
-#define grpc_lb_v0_ServerList_init_default       {{{NULL}, NULL}, false, grpc_lb_v0_Duration_init_default}
-#define grpc_lb_v0_Server_init_default           {false, "", false, 0, false, {0, {0}}, false, 0}
-#define grpc_lb_v0_Duration_init_zero            {false, 0, false, 0}
-#define grpc_lb_v0_LoadBalanceRequest_init_zero  {false, grpc_lb_v0_InitialLoadBalanceRequest_init_zero, false, grpc_lb_v0_ClientStats_init_zero}
-#define grpc_lb_v0_InitialLoadBalanceRequest_init_zero {false, ""}
-#define grpc_lb_v0_ClientStats_init_zero         {false, 0, false, 0, false, 0}
-#define grpc_lb_v0_LoadBalanceResponse_init_zero {false, grpc_lb_v0_InitialLoadBalanceResponse_init_zero, false, grpc_lb_v0_ServerList_init_zero}
-#define grpc_lb_v0_InitialLoadBalanceResponse_init_zero {false, "", false, "", false, grpc_lb_v0_Duration_init_zero}
-#define grpc_lb_v0_ServerList_init_zero          {{{NULL}, NULL}, false, grpc_lb_v0_Duration_init_zero}
-#define grpc_lb_v0_Server_init_zero              {false, "", false, 0, false, {0, {0}}, false, 0}
-
-/* Field tags (for use in manual encoding/decoding) */
-#define grpc_lb_v0_ClientStats_total_requests_tag 1
-#define grpc_lb_v0_ClientStats_client_rpc_errors_tag 2
-#define grpc_lb_v0_ClientStats_dropped_requests_tag 3
-#define grpc_lb_v0_Duration_seconds_tag          1
-#define grpc_lb_v0_Duration_nanos_tag            2
-#define grpc_lb_v0_InitialLoadBalanceRequest_name_tag 1
-#define grpc_lb_v0_Server_ip_address_tag         1
-#define grpc_lb_v0_Server_port_tag               2
-#define grpc_lb_v0_Server_load_balance_token_tag 3
-#define grpc_lb_v0_Server_drop_request_tag       4
-#define grpc_lb_v0_InitialLoadBalanceResponse_client_config_tag 1
-#define grpc_lb_v0_InitialLoadBalanceResponse_load_balancer_delegate_tag 2
-#define grpc_lb_v0_InitialLoadBalanceResponse_client_stats_report_interval_tag 3
-#define grpc_lb_v0_LoadBalanceRequest_initial_request_tag 1
-#define grpc_lb_v0_LoadBalanceRequest_client_stats_tag 2
-#define grpc_lb_v0_ServerList_servers_tag        1
-#define grpc_lb_v0_ServerList_expiration_interval_tag 3
-#define grpc_lb_v0_LoadBalanceResponse_initial_response_tag 1
-#define grpc_lb_v0_LoadBalanceResponse_server_list_tag 2
-
-/* Struct field encoding specification for nanopb */
-extern const pb_field_t grpc_lb_v0_Duration_fields[3];
-extern const pb_field_t grpc_lb_v0_LoadBalanceRequest_fields[3];
-extern const pb_field_t grpc_lb_v0_InitialLoadBalanceRequest_fields[2];
-extern const pb_field_t grpc_lb_v0_ClientStats_fields[4];
-extern const pb_field_t grpc_lb_v0_LoadBalanceResponse_fields[3];
-extern const pb_field_t grpc_lb_v0_InitialLoadBalanceResponse_fields[4];
-extern const pb_field_t grpc_lb_v0_ServerList_fields[3];
-extern const pb_field_t grpc_lb_v0_Server_fields[5];
-
-/* Maximum encoded size of messages (where known) */
-#define grpc_lb_v0_Duration_size                 22
-#define grpc_lb_v0_LoadBalanceRequest_size       169
-#define grpc_lb_v0_InitialLoadBalanceRequest_size 131
-#define grpc_lb_v0_ClientStats_size              33
-#define grpc_lb_v0_LoadBalanceResponse_size      (165 + grpc_lb_v0_ServerList_size)
-#define grpc_lb_v0_InitialLoadBalanceResponse_size 156
-#define grpc_lb_v0_Server_size                   127
-
-/* Message IDs (where set with "msgid" option) */
-#ifdef PB_MSGID
-
-#define LOAD_BALANCER_MESSAGES \
-
-
-#endif
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
new file mode 100644
index 0000000..52e11c4
--- /dev/null
+++ b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.5-dev */
+
+#include "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h"
+
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t grpc_lb_v1_Duration_fields[3] = {
+    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_Duration, seconds, seconds, 0),
+    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Duration, nanos, seconds, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_LoadBalanceRequest_fields[3] = {
+    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_LoadBalanceRequest, initial_request, initial_request, &grpc_lb_v1_InitialLoadBalanceRequest_fields),
+    PB_FIELD(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_LoadBalanceRequest, client_stats, initial_request, &grpc_lb_v1_ClientStats_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_InitialLoadBalanceRequest_fields[2] = {
+    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_InitialLoadBalanceRequest, name, name, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_ClientStats_fields[4] = {
+    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_ClientStats, total_requests, total_requests, 0),
+    PB_FIELD(  2, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, client_rpc_errors, total_requests, 0),
+    PB_FIELD(  3, INT64   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ClientStats, dropped_requests, client_rpc_errors, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_LoadBalanceResponse_fields[3] = {
+    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_LoadBalanceResponse, initial_response, initial_response, &grpc_lb_v1_InitialLoadBalanceResponse_fields),
+    PB_FIELD(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_LoadBalanceResponse, server_list, initial_response, &grpc_lb_v1_ServerList_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_InitialLoadBalanceResponse_fields[3] = {
+    PB_FIELD(  2, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_InitialLoadBalanceResponse, load_balancer_delegate, load_balancer_delegate, 0),
+    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval, load_balancer_delegate, &grpc_lb_v1_Duration_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_ServerList_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, CALLBACK, FIRST, grpc_lb_v1_ServerList, servers, servers, &grpc_lb_v1_Server_fields),
+    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_ServerList, expiration_interval, servers, &grpc_lb_v1_Duration_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_lb_v1_Server_fields[5] = {
+    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_lb_v1_Server, ip_address, ip_address, 0),
+    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, port, ip_address, 0),
+    PB_FIELD(  3, STRING  , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, load_balance_token, port, 0),
+    PB_FIELD(  4, BOOL    , OPTIONAL, STATIC  , OTHER, grpc_lb_v1_Server, drop_request, load_balance_token, 0),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ * 
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 65536 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 65536 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 65536 && pb_membersize(grpc_lb_v1_ServerList, servers) < 65536 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ * 
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(grpc_lb_v1_LoadBalanceRequest, initial_request) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceRequest, client_stats) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, initial_response) < 256 && pb_membersize(grpc_lb_v1_LoadBalanceResponse, server_list) < 256 && pb_membersize(grpc_lb_v1_InitialLoadBalanceResponse, client_stats_report_interval) < 256 && pb_membersize(grpc_lb_v1_ServerList, servers) < 256 && pb_membersize(grpc_lb_v1_ServerList, expiration_interval) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_grpc_lb_v1_Duration_grpc_lb_v1_LoadBalanceRequest_grpc_lb_v1_InitialLoadBalanceRequest_grpc_lb_v1_ClientStats_grpc_lb_v1_LoadBalanceResponse_grpc_lb_v1_InitialLoadBalanceResponse_grpc_lb_v1_ServerList_grpc_lb_v1_Server)
+#endif
+
+
diff --git a/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
new file mode 100644
index 0000000..d5dc39a
--- /dev/null
+++ b/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h
@@ -0,0 +1,178 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.5-dev */
+
+#ifndef PB_LOAD_BALANCER_PB_H_INCLUDED
+#define PB_LOAD_BALANCER_PB_H_INCLUDED
+#include "third_party/nanopb/pb.h"
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Struct definitions */
+typedef struct _grpc_lb_v1_ClientStats {
+    bool has_total_requests;
+    int64_t total_requests;
+    bool has_client_rpc_errors;
+    int64_t client_rpc_errors;
+    bool has_dropped_requests;
+    int64_t dropped_requests;
+} grpc_lb_v1_ClientStats;
+
+typedef struct _grpc_lb_v1_Duration {
+    bool has_seconds;
+    int64_t seconds;
+    bool has_nanos;
+    int32_t nanos;
+} grpc_lb_v1_Duration;
+
+typedef struct _grpc_lb_v1_InitialLoadBalanceRequest {
+    bool has_name;
+    char name[128];
+} grpc_lb_v1_InitialLoadBalanceRequest;
+
+typedef struct _grpc_lb_v1_Server {
+    bool has_ip_address;
+    char ip_address[46];
+    bool has_port;
+    int32_t port;
+    bool has_load_balance_token;
+    char load_balance_token[64];
+    bool has_drop_request;
+    bool drop_request;
+} grpc_lb_v1_Server;
+
+typedef struct _grpc_lb_v1_InitialLoadBalanceResponse {
+    bool has_load_balancer_delegate;
+    char load_balancer_delegate[64];
+    bool has_client_stats_report_interval;
+    grpc_lb_v1_Duration client_stats_report_interval;
+} grpc_lb_v1_InitialLoadBalanceResponse;
+
+typedef struct _grpc_lb_v1_LoadBalanceRequest {
+    bool has_initial_request;
+    grpc_lb_v1_InitialLoadBalanceRequest initial_request;
+    bool has_client_stats;
+    grpc_lb_v1_ClientStats client_stats;
+} grpc_lb_v1_LoadBalanceRequest;
+
+typedef struct _grpc_lb_v1_ServerList {
+    pb_callback_t servers;
+    bool has_expiration_interval;
+    grpc_lb_v1_Duration expiration_interval;
+} grpc_lb_v1_ServerList;
+
+typedef struct _grpc_lb_v1_LoadBalanceResponse {
+    bool has_initial_response;
+    grpc_lb_v1_InitialLoadBalanceResponse initial_response;
+    bool has_server_list;
+    grpc_lb_v1_ServerList server_list;
+} grpc_lb_v1_LoadBalanceResponse;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define grpc_lb_v1_Duration_init_default         {false, 0, false, 0}
+#define grpc_lb_v1_LoadBalanceRequest_init_default {false, grpc_lb_v1_InitialLoadBalanceRequest_init_default, false, grpc_lb_v1_ClientStats_init_default}
+#define grpc_lb_v1_InitialLoadBalanceRequest_init_default {false, ""}
+#define grpc_lb_v1_ClientStats_init_default      {false, 0, false, 0, false, 0}
+#define grpc_lb_v1_LoadBalanceResponse_init_default {false, grpc_lb_v1_InitialLoadBalanceResponse_init_default, false, grpc_lb_v1_ServerList_init_default}
+#define grpc_lb_v1_InitialLoadBalanceResponse_init_default {false, "", false, grpc_lb_v1_Duration_init_default}
+#define grpc_lb_v1_ServerList_init_default       {{{NULL}, NULL}, false, grpc_lb_v1_Duration_init_default}
+#define grpc_lb_v1_Server_init_default           {false, "", false, 0, false, "", false, 0}
+#define grpc_lb_v1_Duration_init_zero            {false, 0, false, 0}
+#define grpc_lb_v1_LoadBalanceRequest_init_zero  {false, grpc_lb_v1_InitialLoadBalanceRequest_init_zero, false, grpc_lb_v1_ClientStats_init_zero}
+#define grpc_lb_v1_InitialLoadBalanceRequest_init_zero {false, ""}
+#define grpc_lb_v1_ClientStats_init_zero         {false, 0, false, 0, false, 0}
+#define grpc_lb_v1_LoadBalanceResponse_init_zero {false, grpc_lb_v1_InitialLoadBalanceResponse_init_zero, false, grpc_lb_v1_ServerList_init_zero}
+#define grpc_lb_v1_InitialLoadBalanceResponse_init_zero {false, "", false, grpc_lb_v1_Duration_init_zero}
+#define grpc_lb_v1_ServerList_init_zero          {{{NULL}, NULL}, false, grpc_lb_v1_Duration_init_zero}
+#define grpc_lb_v1_Server_init_zero              {false, "", false, 0, false, "", false, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define grpc_lb_v1_ClientStats_total_requests_tag 1
+#define grpc_lb_v1_ClientStats_client_rpc_errors_tag 2
+#define grpc_lb_v1_ClientStats_dropped_requests_tag 3
+#define grpc_lb_v1_Duration_seconds_tag          1
+#define grpc_lb_v1_Duration_nanos_tag            2
+#define grpc_lb_v1_InitialLoadBalanceRequest_name_tag 1
+#define grpc_lb_v1_Server_ip_address_tag         1
+#define grpc_lb_v1_Server_port_tag               2
+#define grpc_lb_v1_Server_load_balance_token_tag 3
+#define grpc_lb_v1_Server_drop_request_tag       4
+#define grpc_lb_v1_InitialLoadBalanceResponse_load_balancer_delegate_tag 2
+#define grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval_tag 3
+#define grpc_lb_v1_LoadBalanceRequest_initial_request_tag 1
+#define grpc_lb_v1_LoadBalanceRequest_client_stats_tag 2
+#define grpc_lb_v1_ServerList_servers_tag        1
+#define grpc_lb_v1_ServerList_expiration_interval_tag 3
+#define grpc_lb_v1_LoadBalanceResponse_initial_response_tag 1
+#define grpc_lb_v1_LoadBalanceResponse_server_list_tag 2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t grpc_lb_v1_Duration_fields[3];
+extern const pb_field_t grpc_lb_v1_LoadBalanceRequest_fields[3];
+extern const pb_field_t grpc_lb_v1_InitialLoadBalanceRequest_fields[2];
+extern const pb_field_t grpc_lb_v1_ClientStats_fields[4];
+extern const pb_field_t grpc_lb_v1_LoadBalanceResponse_fields[3];
+extern const pb_field_t grpc_lb_v1_InitialLoadBalanceResponse_fields[3];
+extern const pb_field_t grpc_lb_v1_ServerList_fields[3];
+extern const pb_field_t grpc_lb_v1_Server_fields[5];
+
+/* Maximum encoded size of messages (where known) */
+#define grpc_lb_v1_Duration_size                 22
+#define grpc_lb_v1_LoadBalanceRequest_size       169
+#define grpc_lb_v1_InitialLoadBalanceRequest_size 131
+#define grpc_lb_v1_ClientStats_size              33
+#define grpc_lb_v1_LoadBalanceResponse_size      (98 + grpc_lb_v1_ServerList_size)
+#define grpc_lb_v1_InitialLoadBalanceResponse_size 90
+#define grpc_lb_v1_Server_size                   127
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define LOAD_BALANCER_MESSAGES \
+
+
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 5363322..b6886a2 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -56,6 +56,8 @@
 #define DEFAULT_CONNECTION_WINDOW_TARGET (1024 * 1024)
 #define MAX_WINDOW 0x7fffffffu
 
+#define DEFAULT_MAX_HEADER_LIST_SIZE (16 * 1024)
+
 #define MAX_CLIENT_STREAM_ID 0x7fffffffu
 
 int grpc_http_trace = 0;
@@ -65,8 +67,8 @@
   ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \
                                                    writing)))
 
-#define TRANSPORT_FROM_PARSING(tw)                                        \
-  ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \
+#define TRANSPORT_FROM_PARSING(tp)                                        \
+  ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \
                                                    parsing)))
 
 #define TRANSPORT_FROM_GLOBAL(tg)                                         \
@@ -311,6 +313,8 @@
     push_setting(t, GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 0);
   }
   push_setting(t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, DEFAULT_WINDOW);
+  push_setting(t, GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
+               DEFAULT_MAX_HEADER_LIST_SIZE);
 
   if (channel_args) {
     for (i = 0; i < channel_args->num_args; i++) {
@@ -378,6 +382,18 @@
               &t->writing.hpack_compressor,
               (uint32_t)channel_args->args[i].value.integer);
         }
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_MAX_METADATA_SIZE)) {
+        if (channel_args->args[i].type != GRPC_ARG_INTEGER) {
+          gpr_log(GPR_ERROR, "%s: must be an integer",
+                  GRPC_ARG_MAX_METADATA_SIZE);
+        } else if (channel_args->args[i].value.integer < 0) {
+          gpr_log(GPR_ERROR, "%s: must be non-negative",
+                  GRPC_ARG_MAX_METADATA_SIZE);
+        } else {
+          push_setting(t, GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
+                       (uint32_t)channel_args->args[i].value.integer);
+        }
       }
     }
   }
@@ -510,7 +526,7 @@
                           [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
     *t->accepting_stream = s;
     grpc_chttp2_stream_map_add(&t->parsing_stream_map, s->global.id, s);
-    s->global.in_stream_map = 1;
+    s->global.in_stream_map = true;
   }
 
   grpc_chttp2_run_with_global_lock(exec_ctx, t, s, finish_init_stream_locked,
@@ -834,7 +850,7 @@
     grpc_chttp2_stream_map_add(
         &TRANSPORT_FROM_GLOBAL(transport_global)->new_stream_map,
         stream_global->id, STREAM_FROM_GLOBAL(stream_global));
-    stream_global->in_stream_map = 1;
+    stream_global->in_stream_map = true;
     transport_global->concurrent_stream_count++;
     grpc_chttp2_become_writable(transport_global, stream_global);
   }
@@ -933,24 +949,38 @@
     stream_global->send_initial_metadata_finished =
         add_closure_barrier(on_complete);
     stream_global->send_initial_metadata = op->send_initial_metadata;
-    if (contains_non_ok_status(transport_global, op->send_initial_metadata)) {
-      stream_global->seen_error = 1;
-      grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
-    }
-    if (!stream_global->write_closed) {
-      if (transport_global->is_client) {
-        GPR_ASSERT(stream_global->id == 0);
-        grpc_chttp2_list_add_waiting_for_concurrency(transport_global,
-                                                     stream_global);
-        maybe_start_some_streams(exec_ctx, transport_global);
-      } else {
-        GPR_ASSERT(stream_global->id != 0);
-        grpc_chttp2_become_writable(transport_global, stream_global);
-      }
+    const size_t metadata_size =
+        grpc_metadata_batch_size(op->send_initial_metadata);
+    const size_t metadata_peer_limit =
+        transport_global->settings[GRPC_PEER_SETTINGS]
+                                  [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+    if (metadata_size > metadata_peer_limit) {
+      gpr_log(GPR_DEBUG,
+              "to-be-sent initial metadata size exceeds peer limit "
+              "(%lu vs. %lu)",
+              metadata_size, metadata_peer_limit);
+      cancel_from_api(exec_ctx, transport_global, stream_global,
+                      GRPC_STATUS_RESOURCE_EXHAUSTED);
     } else {
-      grpc_chttp2_complete_closure_step(
-          exec_ctx, stream_global,
-          &stream_global->send_initial_metadata_finished, 0);
+      if (contains_non_ok_status(transport_global, op->send_initial_metadata)) {
+        stream_global->seen_error = true;
+        grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
+      }
+      if (!stream_global->write_closed) {
+        if (transport_global->is_client) {
+          GPR_ASSERT(stream_global->id == 0);
+          grpc_chttp2_list_add_waiting_for_concurrency(transport_global,
+                                                       stream_global);
+          maybe_start_some_streams(exec_ctx, transport_global);
+        } else {
+          GPR_ASSERT(stream_global->id != 0);
+          grpc_chttp2_become_writable(transport_global, stream_global);
+        }
+      } else {
+        grpc_chttp2_complete_closure_step(
+            exec_ctx, stream_global,
+            &stream_global->send_initial_metadata_finished, 0);
+      }
     }
   }
 
@@ -974,19 +1004,34 @@
     stream_global->send_trailing_metadata_finished =
         add_closure_barrier(on_complete);
     stream_global->send_trailing_metadata = op->send_trailing_metadata;
-    if (contains_non_ok_status(transport_global, op->send_trailing_metadata)) {
-      stream_global->seen_error = 1;
-      grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
-    }
-    if (stream_global->write_closed) {
-      grpc_chttp2_complete_closure_step(
-          exec_ctx, stream_global,
-          &stream_global->send_trailing_metadata_finished,
-          grpc_metadata_batch_is_empty(op->send_trailing_metadata));
-    } else if (stream_global->id != 0) {
-      /* TODO(ctiller): check if there's flow control for any outstanding
-         bytes before going writable */
-      grpc_chttp2_become_writable(transport_global, stream_global);
+    const size_t metadata_size =
+        grpc_metadata_batch_size(op->send_trailing_metadata);
+    const size_t metadata_peer_limit =
+        transport_global->settings[GRPC_PEER_SETTINGS]
+                                  [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+    if (metadata_size > metadata_peer_limit) {
+      gpr_log(GPR_DEBUG,
+              "to-be-sent trailing metadata size exceeds peer limit "
+              "(%lu vs. %lu)",
+              metadata_size, metadata_peer_limit);
+      cancel_from_api(exec_ctx, transport_global, stream_global,
+                      GRPC_STATUS_RESOURCE_EXHAUSTED);
+    } else {
+      if (contains_non_ok_status(transport_global,
+                                 op->send_trailing_metadata)) {
+        stream_global->seen_error = true;
+        grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
+      }
+      if (stream_global->write_closed) {
+        grpc_chttp2_complete_closure_step(
+            exec_ctx, stream_global,
+            &stream_global->send_trailing_metadata_finished,
+            grpc_metadata_batch_is_empty(op->send_trailing_metadata));
+      } else if (stream_global->id != 0) {
+        /* TODO(ctiller): check if there's flow control for any outstanding
+           bytes before going writable */
+        grpc_chttp2_become_writable(transport_global, stream_global);
+      }
     }
   }
 
@@ -1149,6 +1194,16 @@
       grpc_chttp2_list_pop_check_read_ops(transport_global, &stream_global)) {
     if (stream_global->recv_initial_metadata_ready != NULL &&
         stream_global->published_initial_metadata) {
+      if (stream_global->seen_error) {
+        while ((bs = grpc_chttp2_incoming_frame_queue_pop(
+                    &stream_global->incoming_frames)) != NULL) {
+          incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs);
+        }
+        if (stream_global->exceeded_metadata_size) {
+          cancel_from_api(exec_ctx, transport_global, stream_global,
+                          GRPC_STATUS_RESOURCE_EXHAUSTED);
+        }
+      }
       grpc_chttp2_incoming_metadata_buffer_publish(
           &stream_global->received_initial_metadata,
           stream_global->recv_initial_metadata);
@@ -1178,10 +1233,15 @@
     }
     if (stream_global->recv_trailing_metadata_finished != NULL &&
         stream_global->read_closed && stream_global->write_closed) {
-      while (stream_global->seen_error &&
-             (bs = grpc_chttp2_incoming_frame_queue_pop(
-                  &stream_global->incoming_frames)) != NULL) {
-        incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs);
+      if (stream_global->seen_error) {
+        while ((bs = grpc_chttp2_incoming_frame_queue_pop(
+                    &stream_global->incoming_frames)) != NULL) {
+          incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs);
+        }
+        if (stream_global->exceeded_metadata_size) {
+          cancel_from_api(exec_ctx, transport_global, stream_global,
+                          GRPC_STATUS_RESOURCE_EXHAUSTED);
+        }
       }
       if (stream_global->all_incoming_byte_streams_finished) {
         grpc_chttp2_incoming_metadata_buffer_publish(
@@ -1213,7 +1273,7 @@
     s = grpc_chttp2_stream_map_delete(&t->new_stream_map, id);
   }
   GPR_ASSERT(s);
-  s->global.in_stream_map = 0;
+  s->global.in_stream_map = false;
   if (t->parsing.incoming_stream == &s->parsing) {
     t->parsing.incoming_stream = NULL;
     grpc_chttp2_parsing_become_skip_parser(exec_ctx, &t->parsing);
@@ -1257,7 +1317,7 @@
                             NULL);
   }
   if (status != GRPC_STATUS_OK && !stream_global->seen_error) {
-    stream_global->seen_error = 1;
+    stream_global->seen_error = true;
     grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
   }
   grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, 1,
@@ -1269,7 +1329,7 @@
                              grpc_chttp2_stream_global *stream_global,
                              grpc_status_code status, gpr_slice *slice) {
   if (status != GRPC_STATUS_OK) {
-    stream_global->seen_error = 1;
+    stream_global->seen_error = true;
     grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
   }
   /* stream_global->recv_trailing_metadata_finished gives us a
@@ -1293,7 +1353,7 @@
               GRPC_MDSTR_GRPC_MESSAGE,
               grpc_mdstr_from_slice(gpr_slice_ref(*slice))));
     }
-    stream_global->published_trailing_metadata = 1;
+    stream_global->published_trailing_metadata = true;
     grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
   }
   if (slice) {
@@ -1323,13 +1383,13 @@
   }
   grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
   if (close_reads && !stream_global->read_closed) {
-    stream_global->read_closed = 1;
-    stream_global->published_initial_metadata = 1;
-    stream_global->published_trailing_metadata = 1;
+    stream_global->read_closed = true;
+    stream_global->published_initial_metadata = true;
+    stream_global->published_trailing_metadata = true;
     decrement_active_streams_locked(exec_ctx, transport_global, stream_global);
   }
   if (close_writes && !stream_global->write_closed) {
-    stream_global->write_closed = 1;
+    stream_global->write_closed = true;
     if (TRANSPORT_FROM_GLOBAL(transport_global)->executor.writing_active) {
       GRPC_CHTTP2_STREAM_REF(stream_global, "finish_writes");
       grpc_chttp2_list_add_closed_waiting_for_writing(transport_global,
diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
index 22467e9..7f01105 100644
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
@@ -45,15 +45,20 @@
   stats->framing_bytes += frame_size;
   uint8_t *p = GPR_SLICE_START_PTR(slice);
 
+  // Frame size.
   *p++ = 0;
   *p++ = 0;
   *p++ = 4;
+  // Frame type.
   *p++ = GRPC_CHTTP2_FRAME_RST_STREAM;
+  // Flags.
   *p++ = 0;
+  // Stream ID.
   *p++ = (uint8_t)(id >> 24);
   *p++ = (uint8_t)(id >> 16);
   *p++ = (uint8_t)(id >> 8);
   *p++ = (uint8_t)(id);
+  // Error code.
   *p++ = (uint8_t)(code >> 24);
   *p++ = (uint8_t)(code >> 16);
   *p++ = (uint8_t)(code >> 8);
diff --git a/src/core/ext/transport/chttp2/transport/incoming_metadata.c b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
index db21744..3e463a7 100644
--- a/src/core/ext/transport/chttp2/transport/incoming_metadata.c
+++ b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
@@ -65,6 +65,7 @@
         gpr_realloc(buffer->elems, sizeof(*buffer->elems) * buffer->capacity);
   }
   buffer->elems[buffer->count++].md = elem;
+  buffer->size += GRPC_MDELEM_LENGTH(elem);
 }
 
 void grpc_chttp2_incoming_metadata_buffer_set_deadline(
diff --git a/src/core/ext/transport/chttp2/transport/incoming_metadata.h b/src/core/ext/transport/chttp2/transport/incoming_metadata.h
index 17ecf8e..df4343b 100644
--- a/src/core/ext/transport/chttp2/transport/incoming_metadata.h
+++ b/src/core/ext/transport/chttp2/transport/incoming_metadata.h
@@ -42,6 +42,7 @@
   size_t capacity;
   gpr_timespec deadline;
   int published;
+  size_t size;  // total size of metadata
 } grpc_chttp2_incoming_metadata_buffer;
 
 /** assumes everything initially zeroed */
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index 8c4fa2d..5872fd8 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -422,23 +422,21 @@
   /** number of streams that are currently being read */
   gpr_refcount active_streams;
 
-  /** when the application requests writes be closed, the write_closed is
-      'queued'; when the close is flow controlled into the send path, we are
-      'sending' it; when the write has been performed it is 'sent' */
+  /** Is this stream closed for writing. */
   bool write_closed;
-  /** is this stream reading half-closed (boolean) */
+  /** Is this stream reading half-closed. */
   bool read_closed;
-  /** are all published incoming byte streams closed */
+  /** Are all published incoming byte streams closed. */
   bool all_incoming_byte_streams_finished;
-  /** is this stream in the stream map? (boolean) */
+  /** Is this stream in the stream map. */
   bool in_stream_map;
-  /** has this stream seen an error? if 1, then pending incoming frames
-      can be thrown away */
+  /** Has this stream seen an error.
+      If true, then pending incoming frames can be thrown away. */
   bool seen_error;
+  bool exceeded_metadata_size;
 
   bool published_initial_metadata;
   bool published_trailing_metadata;
-  bool faked_trailing_metadata;
 
   grpc_chttp2_incoming_metadata_buffer received_initial_metadata;
   grpc_chttp2_incoming_metadata_buffer received_trailing_metadata;
@@ -481,7 +479,8 @@
   /** which metadata did we get (on this parse) */
   uint8_t got_metadata_on_parse[2];
   /** should we raise the seen_error flag in transport_global */
-  uint8_t seen_error;
+  bool seen_error;
+  bool exceeded_metadata_size;
   /** window available for peer to send to us */
   int64_t incoming_window;
   /** parsing state for data frames */
diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c
index 2995066..4bd374b 100644
--- a/src/core/ext/transport/chttp2/transport/parsing.c
+++ b/src/core/ext/transport/chttp2/transport/parsing.c
@@ -45,6 +45,10 @@
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/transport/static_metadata.h"
 
+#define TRANSPORT_FROM_PARSING(tp)                                        \
+  ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \
+                                                   parsing)))
+
 static int init_frame_parser(grpc_exec_ctx *exec_ctx,
                              grpc_chttp2_transport_parsing *transport_parsing);
 static int init_header_frame_parser(
@@ -170,7 +174,9 @@
   while (grpc_chttp2_list_pop_parsing_seen_stream(
       transport_global, transport_parsing, &stream_global, &stream_parsing)) {
     if (stream_parsing->seen_error) {
-      stream_global->seen_error = 1;
+      stream_global->seen_error = true;
+      stream_global->exceeded_metadata_size =
+          stream_parsing->exceeded_metadata_size;
       grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
     }
 
@@ -612,7 +618,7 @@
 
   if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) {
     /* TODO(ctiller): check for a status like " 0" */
-    stream_parsing->seen_error = 1;
+    stream_parsing->seen_error = true;
   }
 
   if (md->key == GRPC_MDSTR_GRPC_TIMEOUT) {
@@ -633,8 +639,26 @@
         gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), *cached_timeout));
     GRPC_MDELEM_UNREF(md);
   } else {
-    grpc_chttp2_incoming_metadata_buffer_add(
-        &stream_parsing->metadata_buffer[0], md);
+    const size_t new_size =
+        stream_parsing->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md);
+    grpc_chttp2_transport_global *transport_global =
+        &TRANSPORT_FROM_PARSING(transport_parsing)->global;
+    const size_t metadata_size_limit =
+        transport_global->settings[GRPC_LOCAL_SETTINGS]
+                                  [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+    if (new_size > metadata_size_limit) {
+      if (!stream_parsing->exceeded_metadata_size) {
+        gpr_log(GPR_DEBUG,
+                "received initial metadata size exceeds limit (%lu vs. %lu)",
+                new_size, metadata_size_limit);
+        stream_parsing->seen_error = true;
+        stream_parsing->exceeded_metadata_size = true;
+      }
+      GRPC_MDELEM_UNREF(md);
+    } else {
+      grpc_chttp2_incoming_metadata_buffer_add(
+          &stream_parsing->metadata_buffer[0], md);
+    }
   }
 
   grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing);
@@ -658,11 +682,29 @@
 
   if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) {
     /* TODO(ctiller): check for a status like " 0" */
-    stream_parsing->seen_error = 1;
+    stream_parsing->seen_error = true;
   }
 
-  grpc_chttp2_incoming_metadata_buffer_add(&stream_parsing->metadata_buffer[1],
-                                           md);
+  const size_t new_size =
+      stream_parsing->metadata_buffer[1].size + GRPC_MDELEM_LENGTH(md);
+  grpc_chttp2_transport_global *transport_global =
+      &TRANSPORT_FROM_PARSING(transport_parsing)->global;
+  const size_t metadata_size_limit =
+      transport_global->settings[GRPC_LOCAL_SETTINGS]
+                                [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+  if (new_size > metadata_size_limit) {
+    if (!stream_parsing->exceeded_metadata_size) {
+      gpr_log(GPR_DEBUG,
+              "received trailing metadata size exceeds limit (%lu vs. %lu)",
+              new_size, metadata_size_limit);
+      stream_parsing->seen_error = true;
+      stream_parsing->exceeded_metadata_size = true;
+    }
+    GRPC_MDELEM_UNREF(md);
+  } else {
+    grpc_chttp2_incoming_metadata_buffer_add(
+        &stream_parsing->metadata_buffer[1], md);
+  }
 
   grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing);
 
diff --git a/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c b/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
deleted file mode 100644
index df1acdd..0000000
--- a/src/core/ext/transport/cronet/client/secure/cronet_channel_create.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <grpc/impl/codegen/port_platform.h>
-
-#include <stdio.h>
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-
-#include "src/core/lib/surface/channel.h"
-#include "src/core/lib/transport/transport_impl.h"
-
-// Cronet transport object
-typedef struct cronet_transport {
-  grpc_transport base;  // must be first element in this structure
-  void *engine;
-  char *host;
-} cronet_transport;
-
-extern grpc_transport_vtable grpc_cronet_vtable;
-
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved) {
-  cronet_transport *ct = gpr_malloc(sizeof(cronet_transport));
-  ct->base.vtable = &grpc_cronet_vtable;
-  ct->engine = engine;
-  ct->host = gpr_malloc(strlen(target) + 1);
-  strcpy(ct->host, target);
-  gpr_log(GPR_DEBUG,
-          "grpc_create_cronet_transport: cronet_engine = %p, target=%s", engine,
-          ct->host);
-
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  return grpc_channel_create(&exec_ctx, target, args,
-                             GRPC_CLIENT_DIRECT_CHANNEL, (grpc_transport *)ct);
-}
diff --git a/src/core/ext/transport/cronet/transport/cronet_api_dummy.c b/src/core/ext/transport/cronet/transport/cronet_api_dummy.c
deleted file mode 100644
index 687026c..0000000
--- a/src/core/ext/transport/cronet/transport/cronet_api_dummy.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-/* This file has empty implementation of all the functions exposed by the cronet
-library, so we can build it in all environments */
-
-#include <stdbool.h>
-
-#include <grpc/support/log.h>
-
-#include "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
-
-#ifdef GRPC_COMPILE_WITH_CRONET
-/* link with the real CRONET library in the build system */
-#else
-/* Dummy implementation of cronet API just to test for build-ability */
-cronet_bidirectional_stream* cronet_bidirectional_stream_create(
-    cronet_engine* engine, void* annotation,
-    cronet_bidirectional_stream_callback* callback) {
-  GPR_ASSERT(0);
-  return NULL;
-}
-
-int cronet_bidirectional_stream_destroy(cronet_bidirectional_stream* stream) {
-  GPR_ASSERT(0);
-  return 0;
-}
-
-int cronet_bidirectional_stream_start(
-    cronet_bidirectional_stream* stream, const char* url, int priority,
-    const char* method, const cronet_bidirectional_stream_header_array* headers,
-    bool end_of_stream) {
-  GPR_ASSERT(0);
-  return 0;
-}
-
-int cronet_bidirectional_stream_read(cronet_bidirectional_stream* stream,
-                                     char* buffer, int capacity) {
-  GPR_ASSERT(0);
-  return 0;
-}
-
-int cronet_bidirectional_stream_write(cronet_bidirectional_stream* stream,
-                                      const char* buffer, int count,
-                                      bool end_of_stream) {
-  GPR_ASSERT(0);
-  return 0;
-}
-
-int cronet_bidirectional_stream_cancel(cronet_bidirectional_stream* stream) {
-  GPR_ASSERT(0);
-  return 0;
-}
-
-#endif /* GRPC_COMPILE_WITH_CRONET */
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.c b/src/core/ext/transport/cronet/transport/cronet_transport.c
deleted file mode 100644
index 5bb0851..0000000
--- a/src/core/ext/transport/cronet/transport/cronet_transport.c
+++ /dev/null
@@ -1,640 +0,0 @@
-/*
- *
- * Copyright 2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <string.h>
-
-#include <grpc/impl/codegen/port_platform.h>
-#include <grpc/support/alloc.h>
-#include <grpc/support/host_port.h>
-#include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/surface/channel.h"
-#include "src/core/lib/transport/metadata_batch.h"
-#include "src/core/lib/transport/transport_impl.h"
-#include "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
-
-#define GRPC_HEADER_SIZE_IN_BYTES 5
-
-// Global flag that gets set with GRPC_TRACE env variable
-int grpc_cronet_trace = 1;
-
-// Cronet transport object
-struct grpc_cronet_transport {
-  grpc_transport base; /* must be first element in this structure */
-  cronet_engine *engine;
-  char *host;
-};
-
-typedef struct grpc_cronet_transport grpc_cronet_transport;
-
-enum send_state {
-  CRONET_SEND_IDLE = 0,
-  CRONET_REQ_STARTED,
-  CRONET_SEND_HEADER,
-  CRONET_WRITE,
-  CRONET_WRITE_COMPLETED,
-};
-
-enum recv_state {
-  CRONET_RECV_IDLE = 0,
-  CRONET_RECV_READ_LENGTH,
-  CRONET_RECV_READ_DATA,
-  CRONET_RECV_CLOSED,
-};
-
-static const char *recv_state_name[] = {
-    "CRONET_RECV_IDLE", "CRONET_RECV_READ_LENGTH", "CRONET_RECV_READ_DATA,",
-    "CRONET_RECV_CLOSED"};
-
-// Enum that identifies calling function.
-enum e_caller {
-  PERFORM_STREAM_OP,
-  ON_READ_COMPLETE,
-  ON_RESPONSE_HEADERS_RECEIVED,
-  ON_RESPONSE_TRAILERS_RECEIVED
-};
-
-enum callback_id {
-  CB_SEND_INITIAL_METADATA = 0,
-  CB_SEND_MESSAGE,
-  CB_SEND_TRAILING_METADATA,
-  CB_RECV_MESSAGE,
-  CB_RECV_INITIAL_METADATA,
-  CB_RECV_TRAILING_METADATA,
-  CB_NUM_CALLBACKS
-};
-
-struct stream_obj {
-  // we store received bytes here as they trickle in.
-  gpr_slice_buffer write_slice_buffer;
-  cronet_bidirectional_stream *cbs;
-  gpr_slice slice;
-  gpr_slice_buffer read_slice_buffer;
-  struct grpc_slice_buffer_stream sbs;
-  char *read_buffer;
-  int remaining_read_bytes;
-  int total_read_bytes;
-
-  char *write_buffer;
-  size_t write_buffer_size;
-
-  // Hold the URL
-  char *url;
-
-  bool response_headers_received;
-  bool read_requested;
-  bool response_trailers_received;
-  bool read_closed;
-
-  // Recv message stuff
-  grpc_byte_buffer **recv_message;
-  // Initial metadata stuff
-  grpc_metadata_batch *recv_initial_metadata;
-  // Trailing metadata stuff
-  grpc_metadata_batch *recv_trailing_metadata;
-  grpc_chttp2_incoming_metadata_buffer imb;
-
-  // This mutex protects receive state machine execution
-  gpr_mu recv_mu;
-  // we can queue up up to 2 callbacks for each OP
-  grpc_closure *callback_list[CB_NUM_CALLBACKS][2];
-
-  // storage for header
-  cronet_bidirectional_stream_header *headers;
-  uint32_t num_headers;
-  cronet_bidirectional_stream_header_array header_array;
-  // state tracking
-  enum recv_state cronet_recv_state;
-  enum send_state cronet_send_state;
-};
-
-typedef struct stream_obj stream_obj;
-
-static void next_send_step(stream_obj *s);
-static void next_recv_step(stream_obj *s, enum e_caller caller);
-
-static void set_pollset_do_nothing(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                                   grpc_stream *gs, grpc_pollset *pollset) {}
-
-static void enqueue_callbacks(grpc_closure *callback_list[]) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  if (callback_list[0]) {
-    grpc_exec_ctx_enqueue(&exec_ctx, callback_list[0], true, NULL);
-    callback_list[0] = NULL;
-  }
-  if (callback_list[1]) {
-    grpc_exec_ctx_enqueue(&exec_ctx, callback_list[1], true, NULL);
-    callback_list[1] = NULL;
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-}
-
-static void on_canceled(cronet_bidirectional_stream *stream) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "on_canceled %p", stream);
-  }
-}
-
-static void on_failed(cronet_bidirectional_stream *stream, int net_error) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "on_failed %p, error = %d", stream, net_error);
-  }
-}
-
-static void on_succeeded(cronet_bidirectional_stream *stream) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "on_succeeded %p", stream);
-  }
-}
-
-static void on_response_trailers_received(
-    cronet_bidirectional_stream *stream,
-    const cronet_bidirectional_stream_header_array *trailers) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "R: on_response_trailers_received");
-  }
-  stream_obj *s = (stream_obj *)stream->annotation;
-
-  memset(&s->imb, 0, sizeof(s->imb));
-  grpc_chttp2_incoming_metadata_buffer_init(&s->imb);
-  unsigned int i = 0;
-  for (i = 0; i < trailers->count; i++) {
-    grpc_chttp2_incoming_metadata_buffer_add(
-        &s->imb, grpc_mdelem_from_metadata_strings(
-                     grpc_mdstr_from_string(trailers->headers[i].key),
-                     grpc_mdstr_from_string(trailers->headers[i].value)));
-  }
-  s->response_trailers_received = true;
-  next_recv_step(s, ON_RESPONSE_TRAILERS_RECEIVED);
-}
-
-static void on_write_completed(cronet_bidirectional_stream *stream,
-                               const char *data) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "W: on_write_completed");
-  }
-  stream_obj *s = (stream_obj *)stream->annotation;
-  enqueue_callbacks(s->callback_list[CB_SEND_MESSAGE]);
-  s->cronet_send_state = CRONET_WRITE_COMPLETED;
-  next_send_step(s);
-}
-
-static void process_recv_message(stream_obj *s, const uint8_t *recv_data) {
-  gpr_slice read_data_slice = gpr_slice_malloc((uint32_t)s->total_read_bytes);
-  uint8_t *dst_p = GPR_SLICE_START_PTR(read_data_slice);
-  memcpy(dst_p, recv_data, (size_t)s->total_read_bytes);
-  gpr_slice_buffer_add(&s->read_slice_buffer, read_data_slice);
-  grpc_slice_buffer_stream_init(&s->sbs, &s->read_slice_buffer, 0);
-  *s->recv_message = (grpc_byte_buffer *)&s->sbs;
-}
-
-static int parse_grpc_header(const uint8_t *data) {
-  const uint8_t *p = data + 1;
-  int length = 0;
-  length |= ((uint8_t)*p++) << 24;
-  length |= ((uint8_t)*p++) << 16;
-  length |= ((uint8_t)*p++) << 8;
-  length |= ((uint8_t)*p++);
-  return length;
-}
-
-static void on_read_completed(cronet_bidirectional_stream *stream, char *data,
-                              int count) {
-  stream_obj *s = (stream_obj *)stream->annotation;
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "R: on_read_completed count=%d, total=%d, remaining=%d",
-            count, s->total_read_bytes, s->remaining_read_bytes);
-  }
-  if (count > 0) {
-    GPR_ASSERT(s->recv_message);
-    s->remaining_read_bytes -= count;
-    next_recv_step(s, ON_READ_COMPLETE);
-  } else {
-    s->read_closed = true;
-    next_recv_step(s, ON_READ_COMPLETE);
-  }
-}
-
-static void on_response_headers_received(
-    cronet_bidirectional_stream *stream,
-    const cronet_bidirectional_stream_header_array *headers,
-    const char *negotiated_protocol) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "R: on_response_headers_received");
-  }
-  stream_obj *s = (stream_obj *)stream->annotation;
-  enqueue_callbacks(s->callback_list[CB_RECV_INITIAL_METADATA]);
-  s->response_headers_received = true;
-  next_recv_step(s, ON_RESPONSE_HEADERS_RECEIVED);
-}
-
-static void on_request_headers_sent(cronet_bidirectional_stream *stream) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "W: on_request_headers_sent");
-  }
-  stream_obj *s = (stream_obj *)stream->annotation;
-  enqueue_callbacks(s->callback_list[CB_SEND_INITIAL_METADATA]);
-  s->cronet_send_state = CRONET_SEND_HEADER;
-  next_send_step(s);
-}
-
-// Callback function pointers (invoked by cronet in response to events)
-static cronet_bidirectional_stream_callback callbacks = {
-    on_request_headers_sent,
-    on_response_headers_received,
-    on_read_completed,
-    on_write_completed,
-    on_response_trailers_received,
-    on_succeeded,
-    on_failed,
-    on_canceled};
-
-static void invoke_closing_callback(stream_obj *s) {
-  grpc_chttp2_incoming_metadata_buffer_publish(&s->imb,
-                                               s->recv_trailing_metadata);
-  if (s->callback_list[CB_RECV_TRAILING_METADATA]) {
-    enqueue_callbacks(s->callback_list[CB_RECV_TRAILING_METADATA]);
-  }
-}
-
-static void set_recv_state(stream_obj *s, enum recv_state state) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "next_state = %s", recv_state_name[state]);
-  }
-  s->cronet_recv_state = state;
-}
-
-// This is invoked from perform_stream_op, and all on_xxxx callbacks.
-static void next_recv_step(stream_obj *s, enum e_caller caller) {
-  gpr_mu_lock(&s->recv_mu);
-  switch (s->cronet_recv_state) {
-    case CRONET_RECV_IDLE:
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "cronet_recv_state = CRONET_RECV_IDLE");
-      }
-      if (caller == PERFORM_STREAM_OP ||
-          caller == ON_RESPONSE_HEADERS_RECEIVED) {
-        if (s->read_closed && s->response_trailers_received) {
-          invoke_closing_callback(s);
-          set_recv_state(s, CRONET_RECV_CLOSED);
-        } else if (s->response_headers_received == true &&
-                   s->read_requested == true) {
-          set_recv_state(s, CRONET_RECV_READ_LENGTH);
-          s->total_read_bytes = s->remaining_read_bytes =
-              GRPC_HEADER_SIZE_IN_BYTES;
-          GPR_ASSERT(s->read_buffer);
-          if (grpc_cronet_trace) {
-            gpr_log(GPR_DEBUG, "R: cronet_bidirectional_stream_read()");
-          }
-          cronet_bidirectional_stream_read(s->cbs, s->read_buffer,
-                                           s->remaining_read_bytes);
-        }
-      }
-      break;
-    case CRONET_RECV_READ_LENGTH:
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "cronet_recv_state = CRONET_RECV_READ_LENGTH");
-      }
-      if (caller == ON_READ_COMPLETE) {
-        if (s->read_closed) {
-          invoke_closing_callback(s);
-          enqueue_callbacks(s->callback_list[CB_RECV_MESSAGE]);
-          set_recv_state(s, CRONET_RECV_CLOSED);
-        } else {
-          GPR_ASSERT(s->remaining_read_bytes == 0);
-          set_recv_state(s, CRONET_RECV_READ_DATA);
-          s->total_read_bytes = s->remaining_read_bytes =
-              parse_grpc_header((const uint8_t *)s->read_buffer);
-          s->read_buffer =
-              gpr_realloc(s->read_buffer, (uint32_t)s->remaining_read_bytes);
-          GPR_ASSERT(s->read_buffer);
-          if (grpc_cronet_trace) {
-            gpr_log(GPR_DEBUG, "R: cronet_bidirectional_stream_read()");
-          }
-          cronet_bidirectional_stream_read(s->cbs, (char *)s->read_buffer,
-                                           s->remaining_read_bytes);
-        }
-      }
-      break;
-    case CRONET_RECV_READ_DATA:
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "cronet_recv_state = CRONET_RECV_READ_DATA");
-      }
-      if (caller == ON_READ_COMPLETE) {
-        if (s->remaining_read_bytes > 0) {
-          int offset = s->total_read_bytes - s->remaining_read_bytes;
-          GPR_ASSERT(s->read_buffer);
-          if (grpc_cronet_trace) {
-            gpr_log(GPR_DEBUG, "R: cronet_bidirectional_stream_read()");
-          }
-          cronet_bidirectional_stream_read(
-              s->cbs, (char *)s->read_buffer + offset, s->remaining_read_bytes);
-        } else {
-          gpr_slice_buffer_init(&s->read_slice_buffer);
-          uint8_t *p = (uint8_t *)s->read_buffer;
-          process_recv_message(s, p);
-          set_recv_state(s, CRONET_RECV_IDLE);
-          enqueue_callbacks(s->callback_list[CB_RECV_MESSAGE]);
-        }
-      }
-      break;
-    case CRONET_RECV_CLOSED:
-      break;
-    default:
-      GPR_ASSERT(0);  // Should not reach here
-      break;
-  }
-  gpr_mu_unlock(&s->recv_mu);
-}
-
-// This function takes the data from s->write_slice_buffer and assembles into
-// a contiguous byte stream with 5 byte gRPC header prepended.
-static void create_grpc_frame(stream_obj *s) {
-  gpr_slice slice = gpr_slice_buffer_take_first(&s->write_slice_buffer);
-  uint8_t *raw_data = GPR_SLICE_START_PTR(slice);
-  size_t length = GPR_SLICE_LENGTH(slice);
-  s->write_buffer_size = length + GRPC_HEADER_SIZE_IN_BYTES;
-  s->write_buffer = gpr_realloc(s->write_buffer, s->write_buffer_size);
-  uint8_t *p = (uint8_t *)s->write_buffer;
-  // Append 5 byte header
-  *p++ = 0;
-  *p++ = (uint8_t)(length >> 24);
-  *p++ = (uint8_t)(length >> 16);
-  *p++ = (uint8_t)(length >> 8);
-  *p++ = (uint8_t)(length);
-  // append actual data
-  memcpy(p, raw_data, length);
-}
-
-static void do_write(stream_obj *s) {
-  gpr_slice_buffer *sb = &s->write_slice_buffer;
-  GPR_ASSERT(sb->count <= 1);
-  if (sb->count > 0) {
-    create_grpc_frame(s);
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG, "W: cronet_bidirectional_stream_write");
-    }
-    cronet_bidirectional_stream_write(s->cbs, s->write_buffer,
-                                      (int)s->write_buffer_size, false);
-  }
-}
-
-//
-static void next_send_step(stream_obj *s) {
-  switch (s->cronet_send_state) {
-    case CRONET_SEND_IDLE:
-      GPR_ASSERT(
-          s->cbs);  // cronet_bidirectional_stream is not initialized yet.
-      s->cronet_send_state = CRONET_REQ_STARTED;
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "cronet_bidirectional_stream_start to %s", s->url);
-      }
-      cronet_bidirectional_stream_start(s->cbs, s->url, 0, "POST",
-                                        &s->header_array, false);
-      // we no longer need the memory that was allocated earlier.
-      gpr_free(s->header_array.headers);
-      break;
-    case CRONET_SEND_HEADER:
-      do_write(s);
-      s->cronet_send_state = CRONET_WRITE;
-      break;
-    case CRONET_WRITE_COMPLETED:
-      do_write(s);
-      break;
-    default:
-      GPR_ASSERT(0);
-      break;
-  }
-}
-
-static void convert_metadata_to_cronet_headers(grpc_linked_mdelem *head,
-                                               const char *host,
-                                               stream_obj *s) {
-  grpc_linked_mdelem *curr = head;
-  // Walk the linked list and get number of header fields
-  uint32_t num_headers_available = 0;
-  while (curr != NULL) {
-    curr = curr->next;
-    num_headers_available++;
-  }
-  // Allocate enough memory
-  s->headers = (cronet_bidirectional_stream_header *)gpr_malloc(
-      sizeof(cronet_bidirectional_stream_header) * num_headers_available);
-
-  // Walk the linked list again, this time copying the header fields.
-  // s->num_headers
-  // can be less than num_headers_available, as some headers are not used for
-  // cronet
-  curr = head;
-  s->num_headers = 0;
-  while (s->num_headers < num_headers_available) {
-    grpc_mdelem *mdelem = curr->md;
-    curr = curr->next;
-    const char *key = grpc_mdstr_as_c_string(mdelem->key);
-    const char *value = grpc_mdstr_as_c_string(mdelem->value);
-    if (strcmp(key, ":scheme") == 0 || strcmp(key, ":method") == 0 ||
-        strcmp(key, ":authority") == 0) {
-      // Cronet populates these fields on its own.
-      continue;
-    }
-    if (strcmp(key, ":path") == 0) {
-      // Create URL by appending :path value to the hostname
-      gpr_asprintf(&s->url, "https://%s%s", host, value);
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "extracted URL = %s", s->url);
-      }
-      continue;
-    }
-    s->headers[s->num_headers].key = key;
-    s->headers[s->num_headers].value = value;
-    s->num_headers++;
-    if (curr == NULL) {
-      break;
-    }
-  }
-}
-
-static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                              grpc_stream *gs, grpc_transport_stream_op *op) {
-  grpc_cronet_transport *ct = (grpc_cronet_transport *)gt;
-  GPR_ASSERT(ct->engine);
-  stream_obj *s = (stream_obj *)gs;
-  if (op->recv_trailing_metadata) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG,
-              "perform_stream_op - recv_trailing_metadata: on_complete=%p",
-              op->on_complete);
-    }
-    s->recv_trailing_metadata = op->recv_trailing_metadata;
-    GPR_ASSERT(!s->callback_list[CB_RECV_TRAILING_METADATA][0]);
-    s->callback_list[CB_RECV_TRAILING_METADATA][0] = op->on_complete;
-  }
-  if (op->recv_message) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG, "perform_stream_op - recv_message: on_complete=%p",
-              op->on_complete);
-    }
-    s->recv_message = (grpc_byte_buffer **)op->recv_message;
-    GPR_ASSERT(!s->callback_list[CB_RECV_MESSAGE][0]);
-    GPR_ASSERT(!s->callback_list[CB_RECV_MESSAGE][1]);
-    s->callback_list[CB_RECV_MESSAGE][0] = op->recv_message_ready;
-    s->callback_list[CB_RECV_MESSAGE][1] = op->on_complete;
-    s->read_requested = true;
-    next_recv_step(s, PERFORM_STREAM_OP);
-  }
-  if (op->recv_initial_metadata) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG, "perform_stream_op - recv_initial_metadata:=%p",
-              op->on_complete);
-    }
-    s->recv_initial_metadata = op->recv_initial_metadata;
-    GPR_ASSERT(!s->callback_list[CB_RECV_INITIAL_METADATA][0]);
-    GPR_ASSERT(!s->callback_list[CB_RECV_INITIAL_METADATA][1]);
-    s->callback_list[CB_RECV_INITIAL_METADATA][0] =
-        op->recv_initial_metadata_ready;
-    s->callback_list[CB_RECV_INITIAL_METADATA][1] = op->on_complete;
-  }
-  if (op->send_initial_metadata) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG,
-              "perform_stream_op - send_initial_metadata: on_complete=%p",
-              op->on_complete);
-    }
-    s->num_headers = 0;
-    convert_metadata_to_cronet_headers(op->send_initial_metadata->list.head,
-                                       ct->host, s);
-    s->header_array.count = s->num_headers;
-    s->header_array.capacity = s->num_headers;
-    s->header_array.headers = s->headers;
-    GPR_ASSERT(!s->callback_list[CB_SEND_INITIAL_METADATA][0]);
-    s->callback_list[CB_SEND_INITIAL_METADATA][0] = op->on_complete;
-  }
-  if (op->send_message) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG, "perform_stream_op - send_message: on_complete=%p",
-              op->on_complete);
-    }
-    grpc_byte_stream_next(exec_ctx, op->send_message, &s->slice,
-                          op->send_message->length, NULL);
-    // Check that compression flag is not ON. We don't support compression yet.
-    // TODO (makdharma): add compression support
-    GPR_ASSERT(op->send_message->flags == 0);
-    gpr_slice_buffer_add(&s->write_slice_buffer, s->slice);
-    if (s->cbs == NULL) {
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "cronet_bidirectional_stream_create");
-      }
-      s->cbs = cronet_bidirectional_stream_create(ct->engine, s, &callbacks);
-      GPR_ASSERT(s->cbs);
-      s->read_closed = false;
-      s->response_trailers_received = false;
-      s->response_headers_received = false;
-      s->cronet_send_state = CRONET_SEND_IDLE;
-      s->cronet_recv_state = CRONET_RECV_IDLE;
-    }
-    GPR_ASSERT(!s->callback_list[CB_SEND_MESSAGE][0]);
-    s->callback_list[CB_SEND_MESSAGE][0] = op->on_complete;
-    next_send_step(s);
-  }
-  if (op->send_trailing_metadata) {
-    if (grpc_cronet_trace) {
-      gpr_log(GPR_DEBUG,
-              "perform_stream_op - send_trailing_metadata: on_complete=%p",
-              op->on_complete);
-    }
-    GPR_ASSERT(!s->callback_list[CB_SEND_TRAILING_METADATA][0]);
-    s->callback_list[CB_SEND_TRAILING_METADATA][0] = op->on_complete;
-    if (s->cbs) {
-      // Send an "empty" write to the far end to signal that we're done.
-      // This will induce the server to send down trailers.
-      if (grpc_cronet_trace) {
-        gpr_log(GPR_DEBUG, "W: cronet_bidirectional_stream_write");
-      }
-      cronet_bidirectional_stream_write(s->cbs, "abc", 0, true);
-    } else {
-      // We never created a stream. This was probably an empty request.
-      invoke_closing_callback(s);
-    }
-  }
-}
-
-static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                       grpc_stream *gs, grpc_stream_refcount *refcount,
-                       const void *server_data) {
-  stream_obj *s = (stream_obj *)gs;
-  memset(s->callback_list, 0, sizeof(s->callback_list));
-  s->cbs = NULL;
-  gpr_mu_init(&s->recv_mu);
-  s->read_buffer = gpr_malloc(GRPC_HEADER_SIZE_IN_BYTES);
-  s->write_buffer = gpr_malloc(GRPC_HEADER_SIZE_IN_BYTES);
-  gpr_slice_buffer_init(&s->write_slice_buffer);
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "cronet_transport - init_stream");
-  }
-  return 0;
-}
-
-static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                           grpc_stream *gs, void *and_free_memory) {
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "Destroy stream");
-  }
-  stream_obj *s = (stream_obj *)gs;
-  s->cbs = NULL;
-  gpr_free(s->read_buffer);
-  gpr_free(s->write_buffer);
-  gpr_free(s->url);
-  gpr_mu_destroy(&s->recv_mu);
-  if (and_free_memory) {
-    gpr_free(and_free_memory);
-  }
-}
-
-static void destroy_transport(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {
-  grpc_cronet_transport *ct = (grpc_cronet_transport *)gt;
-  gpr_free(ct->host);
-  if (grpc_cronet_trace) {
-    gpr_log(GPR_DEBUG, "Destroy transport");
-  }
-}
-
-const grpc_transport_vtable grpc_cronet_vtable = {
-    sizeof(stream_obj),     "cronet_http",     init_stream,
-    set_pollset_do_nothing, perform_stream_op, NULL,
-    destroy_stream,         destroy_transport, NULL};
diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c
index 7210aef..e286922 100644
--- a/src/core/lib/iomgr/tcp_posix.c
+++ b/src/core/lib/iomgr/tcp_posix.c
@@ -164,7 +164,7 @@
     for (i = 0; i < tcp->incoming_buffer->count; i++) {
       char *dump = gpr_dump_slice(tcp->incoming_buffer->slices[i],
                                   GPR_DUMP_HEX | GPR_DUMP_ASCII);
-      gpr_log(GPR_DEBUG, "READ %p: %s", tcp, dump);
+      gpr_log(GPR_DEBUG, "READ %p (peer=%s): %s", tcp, tcp->peer_string, dump);
       gpr_free(dump);
     }
   }
@@ -398,7 +398,7 @@
     for (i = 0; i < buf->count; i++) {
       char *data =
           gpr_dump_slice(buf->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
-      gpr_log(GPR_DEBUG, "WRITE %p: %s", tcp, data);
+      gpr_log(GPR_DEBUG, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data);
       gpr_free(data);
     }
   }
diff --git a/src/core/lib/transport/metadata.h b/src/core/lib/transport/metadata.h
index 713d9e6..6d82f4d 100644
--- a/src/core/lib/transport/metadata.h
+++ b/src/core/lib/transport/metadata.h
@@ -147,6 +147,10 @@
 
 #define GRPC_MDSTR_LENGTH(s) (GPR_SLICE_LENGTH(s->slice))
 
+/* We add 32 bytes of padding as per RFC-7540 section 6.5.2. */
+#define GRPC_MDELEM_LENGTH(e) \
+  (GRPC_MDSTR_LENGTH((e)->key) + GRPC_MDSTR_LENGTH((e)->value) + 32)
+
 int grpc_mdstr_is_legal_header(grpc_mdstr *s);
 int grpc_mdstr_is_legal_nonbin_header(grpc_mdstr *s);
 int grpc_mdstr_is_bin_suffixed(grpc_mdstr *s);
diff --git a/src/core/lib/transport/metadata_batch.c b/src/core/lib/transport/metadata_batch.c
index 4567221..e4398ab 100644
--- a/src/core/lib/transport/metadata_batch.c
+++ b/src/core/lib/transport/metadata_batch.c
@@ -192,3 +192,12 @@
          gpr_time_cmp(gpr_inf_future(batch->deadline.clock_type),
                       batch->deadline) == 0;
 }
+
+size_t grpc_metadata_batch_size(grpc_metadata_batch *batch) {
+  size_t size = 0;
+  for (grpc_linked_mdelem *elem = batch->list.head; elem != NULL;
+       elem = elem->next) {
+    size += GRPC_MDELEM_LENGTH(elem->md);
+  }
+  return size;
+}
diff --git a/src/core/lib/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h
index b626688..7af823f 100644
--- a/src/core/lib/transport/metadata_batch.h
+++ b/src/core/lib/transport/metadata_batch.h
@@ -66,6 +66,9 @@
 void grpc_metadata_batch_clear(grpc_metadata_batch *batch);
 int grpc_metadata_batch_is_empty(grpc_metadata_batch *batch);
 
+/* Returns the transport size of the batch. */
+size_t grpc_metadata_batch_size(grpc_metadata_batch *batch);
+
 /** Moves the metadata information from \a src to \a dst. Upon return, \a src is
  * zeroed. */
 void grpc_metadata_batch_move(grpc_metadata_batch *dst,
diff --git a/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs b/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
index abe9d4a..777a1c8 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/AsyncCallTest.cs
@@ -181,13 +181,14 @@
         }
 
         [Test]
-        public void ClientStreaming_WriteFailure()
+        public void ClientStreaming_WriteCompletionFailure()
         {
             var resultTask = asyncCall.ClientStreamingCallAsync();
             var requestStream = new ClientRequestStream<string, string>(asyncCall);
 
             var writeTask = requestStream.WriteAsync("request1");
             fakeCall.SendCompletionHandler(false);
+            // TODO: maybe IOException or waiting for RPCException is more appropriate here.
             Assert.ThrowsAsync(typeof(InvalidOperationException), async () => await writeTask);
 
             fakeCall.UnaryResponseClientHandler(true,
@@ -199,7 +200,7 @@
         }
 
         [Test]
-        public void ClientStreaming_WriteAfterReceivingStatusFails()
+        public void ClientStreaming_WriteAfterReceivingStatusThrowsRpcException()
         {
             var resultTask = asyncCall.ClientStreamingCallAsync();
             var requestStream = new ClientRequestStream<string, string>(asyncCall);
@@ -210,7 +211,44 @@
                 new Metadata());
 
             AssertUnaryResponseSuccess(asyncCall, fakeCall, resultTask);
+            var ex = Assert.Throws<RpcException>(() => requestStream.WriteAsync("request1"));
+            Assert.AreEqual(Status.DefaultSuccess, ex.Status);
+        }
+
+        [Test]
+        public void ClientStreaming_WriteAfterReceivingStatusThrowsRpcException2()
+        {
+            var resultTask = asyncCall.ClientStreamingCallAsync();
+            var requestStream = new ClientRequestStream<string, string>(asyncCall);
+
+            fakeCall.UnaryResponseClientHandler(true,
+                new ClientSideStatus(new Status(StatusCode.OutOfRange, ""), new Metadata()),
+                CreateResponsePayload(),
+                new Metadata());
+
+            AssertUnaryResponseError(asyncCall, fakeCall, resultTask, StatusCode.OutOfRange);
+            var ex = Assert.Throws<RpcException>(() => requestStream.WriteAsync("request1"));
+            Assert.AreEqual(StatusCode.OutOfRange, ex.Status.StatusCode);
+        }
+
+        [Test]
+        public void ClientStreaming_WriteAfterCompleteThrowsInvalidOperationException()
+        {
+            var resultTask = asyncCall.ClientStreamingCallAsync();
+            var requestStream = new ClientRequestStream<string, string>(asyncCall);
+
+            requestStream.CompleteAsync();
+
             Assert.Throws(typeof(InvalidOperationException), () => requestStream.WriteAsync("request1"));
+
+            fakeCall.SendCompletionHandler(true);
+
+            fakeCall.UnaryResponseClientHandler(true,
+                new ClientSideStatus(Status.DefaultSuccess, new Metadata()),
+                CreateResponsePayload(),
+                new Metadata());
+
+            AssertUnaryResponseSuccess(asyncCall, fakeCall, resultTask);
         }
 
         [Test]
@@ -229,7 +267,7 @@
         }
 
         [Test]
-        public void ClientStreaming_WriteAfterCancellationRequestFails()
+        public void ClientStreaming_WriteAfterCancellationRequestThrowsOperationCancelledException()
         {
             var resultTask = asyncCall.ClientStreamingCallAsync();
             var requestStream = new ClientRequestStream<string, string>(asyncCall);
@@ -340,7 +378,7 @@
         }
 
         [Test]
-        public void DuplexStreaming_WriteAfterReceivingStatusFails()
+        public void DuplexStreaming_WriteAfterReceivingStatusThrowsRpcException()
         {
             asyncCall.StartDuplexStreamingCall();
             var requestStream = new ClientRequestStream<string, string>(asyncCall);
@@ -352,7 +390,8 @@
 
             AssertStreamingResponseSuccess(asyncCall, fakeCall, readTask);
 
-            Assert.ThrowsAsync(typeof(InvalidOperationException), async () => await requestStream.WriteAsync("request1"));
+            var ex = Assert.ThrowsAsync<RpcException>(async () => await requestStream.WriteAsync("request1"));
+            Assert.AreEqual(Status.DefaultSuccess, ex.Status);
         }
 
         [Test]
@@ -372,7 +411,7 @@
         }
 
         [Test]
-        public void DuplexStreaming_WriteAfterCancellationRequestFails()
+        public void DuplexStreaming_WriteAfterCancellationRequestThrowsOperationCancelledException()
         {
             asyncCall.StartDuplexStreamingCall();
             var requestStream = new ClientRequestStream<string, string>(asyncCall);
diff --git a/src/csharp/Grpc.Core/GrpcEnvironment.cs b/src/csharp/Grpc.Core/GrpcEnvironment.cs
index a5c78cc..bee0ef1 100644
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@@ -45,11 +45,12 @@
     /// </summary>
     public class GrpcEnvironment
     {
-        const int THREAD_POOL_SIZE = 4;
+        const int MinDefaultThreadPoolSize = 4;
 
         static object staticLock = new object();
         static GrpcEnvironment instance;
         static int refCount;
+        static int? customThreadPoolSize;
 
         static ILogger logger = new ConsoleLogger();
 
@@ -123,13 +124,30 @@
         }
 
         /// <summary>
+        /// Sets the number of threads in the gRPC thread pool that polls for internal RPC events.
+        /// Can be only invoke before the <c>GrpcEnviroment</c> is started and cannot be changed afterwards.
+        /// Setting thread pool size is an advanced setting and you should only use it if you know what you are doing.
+        /// Most users should rely on the default value provided by gRPC library.
+        /// Note: this method is part of an experimental API that can change or be removed without any prior notice.
+        /// </summary>
+        public static void SetThreadPoolSize(int threadCount)
+        {
+            lock (staticLock)
+            {
+                GrpcPreconditions.CheckState(instance == null, "Can only be set before GrpcEnvironment is initialized");
+                GrpcPreconditions.CheckArgument(threadCount > 0, "threadCount needs to be a positive number");
+                customThreadPoolSize = threadCount;
+            }
+        }
+
+        /// <summary>
         /// Creates gRPC environment.
         /// </summary>
         private GrpcEnvironment()
         {
             GrpcNativeInit();
             completionRegistry = new CompletionRegistry(this);
-            threadPool = new GrpcThreadPool(this, THREAD_POOL_SIZE);
+            threadPool = new GrpcThreadPool(this, GetThreadPoolSizeOrDefault());
             threadPool.Start();
         }
 
@@ -200,5 +218,17 @@
 
             debugStats.CheckOK();
         }
+
+        private int GetThreadPoolSizeOrDefault()
+        {
+            if (customThreadPoolSize.HasValue)
+            {
+                return customThreadPoolSize.Value;
+            }
+            // In systems with many cores, use half of the cores for GrpcThreadPool
+            // and the other half for .NET thread pool. This heuristic definitely needs
+            // more work, but seems to work reasonably well for a start.
+            return Math.Max(MinDefaultThreadPoolSize, Environment.ProcessorCount / 2);
+        }
     }
 }
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCall.cs b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
index f522174..5535186 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@@ -57,7 +57,7 @@
         // Completion of a pending unary response if not null.
         TaskCompletionSource<TResponse> unaryResponseTcs;
 
-        // Indicates that steaming call has finished.
+        // Indicates that response streaming call has finished.
         TaskCompletionSource<object> streamingCallFinishedTcs = new TaskCompletionSource<object>();
 
         // Response headers set here once received.
@@ -443,6 +443,19 @@
             }
         }
 
+        protected override void CheckSendingAllowed(bool allowFinished)
+        {
+            base.CheckSendingAllowed(true);
+
+            // throwing RpcException if we already received status on client
+            // side makes the most sense.
+            // Note that this throws even for StatusCode.OK.
+            if (!allowFinished && finishedStatus.HasValue)
+            {
+                throw new RpcException(finishedStatus.Value.Status);
+            }
+        }
+
         /// <summary>
         /// Handles receive status completion for calls with streaming response.
         /// </summary>
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
index 42234dc..4de2370 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
@@ -213,7 +213,7 @@
         {
         }
 
-        protected void CheckSendingAllowed(bool allowFinished)
+        protected virtual void CheckSendingAllowed(bool allowFinished)
         {
             GrpcPreconditions.CheckState(started);
             CheckNotCancelled();
diff --git a/src/csharp/Grpc.Core/Server.cs b/src/csharp/Grpc.Core/Server.cs
index 5b61b7f..d538a46 100644
--- a/src/csharp/Grpc.Core/Server.cs
+++ b/src/csharp/Grpc.Core/Server.cs
@@ -48,6 +48,7 @@
     /// </summary>
     public class Server
     {
+        const int InitialAllowRpcTokenCount = 10;
         static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<Server>();
 
         readonly AtomicCounter activeCallCounter = new AtomicCounter();
@@ -65,7 +66,7 @@
         readonly TaskCompletionSource<object> shutdownTcs = new TaskCompletionSource<object>();
 
         bool startRequested;
-        bool shutdownRequested;
+        volatile bool shutdownRequested;
 
         /// <summary>
         /// Create a new server.
@@ -129,7 +130,13 @@
                 startRequested = true;
                 
                 handle.Start();
-                AllowOneRpc();
+
+                // Starting with more than one AllowOneRpc tokens can significantly increase
+                // unary RPC throughput.
+                for (int i = 0; i < InitialAllowRpcTokenCount; i++)
+                {
+                    AllowOneRpc();
+                }
             }
         }
 
@@ -239,12 +246,9 @@
         /// </summary>
         private void AllowOneRpc()
         {
-            lock (myLock)
+            if (!shutdownRequested)
             {
-                if (!shutdownRequested)
-                {
-                    handle.RequestCall(HandleNewServerRpc, environment);
-                }
+                handle.RequestCall(HandleNewServerRpc, environment);
             }
         }
 
@@ -283,6 +287,8 @@
         /// </summary>
         private void HandleNewServerRpc(bool success, BatchContextSafeHandle ctx)
         {
+			Task.Run(() => AllowOneRpc());
+
             if (success)
             {
                 ServerRpcNew newRpc = ctx.GetServerRpcNew(this);
@@ -290,11 +296,9 @@
                 // after server shutdown, the callback returns with null call
                 if (!newRpc.Call.IsInvalid)
                 {
-                    Task.Run(async () => await HandleCallAsync(newRpc)).ConfigureAwait(false);
+                    HandleCallAsync(newRpc);  // we don't need to await.
                 }
             }
-
-            AllowOneRpc();
         }
 
         /// <summary>
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index 875202b..ee11105 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -92,7 +92,7 @@
         public void DivByZero()
         {
             var ex = Assert.Throws<RpcException>(() => client.Div(new DivArgs { Dividend = 0, Divisor = 0 }));
-            Assert.AreEqual(StatusCode.Unknown, ex.Status.StatusCode);
+            Assert.AreEqual(StatusCode.InvalidArgument, ex.Status.StatusCode);
         }
 
         [Test]
diff --git a/src/csharp/Grpc.Examples/MathExamples.cs b/src/csharp/Grpc.Examples/MathExamples.cs
index 6075420..d260830 100644
--- a/src/csharp/Grpc.Examples/MathExamples.cs
+++ b/src/csharp/Grpc.Examples/MathExamples.cs
@@ -32,6 +32,7 @@
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using Grpc.Core;
 using Grpc.Core.Utils;
 
 namespace Math
@@ -109,5 +110,42 @@
             DivReply result = await client.DivAsync(new DivArgs { Dividend = sum.Num_, Divisor = numbers.Count });
             Console.WriteLine("Avg Result: " + result);
         }
+
+        /// <summary>
+        /// Shows how to handle a call ending with non-OK status.
+        /// </summary>
+        public static async Task HandleErrorExample(Math.MathClient client)
+        {
+            try
+            {
+                 DivReply result = await client.DivAsync(new DivArgs { Dividend = 5, Divisor = 0 });
+            }
+            catch (RpcException ex)
+            {
+                Console.WriteLine(string.Format("RPC ended with status {0}", ex.Status));
+            }
+        }
+
+        /// <summary>
+        /// Shows how to send request headers and how to access response headers
+        /// and response trailers.
+        /// </summary>
+        public static async Task MetadataExample(Math.MathClient client)
+        {
+            var requestHeaders = new Metadata
+            {
+                { "custom-header", "custom-value" }
+            };
+
+            var call = client.DivAsync(new DivArgs { Dividend = 5, Divisor = 0 }, requestHeaders);
+
+            // Get response headers
+            Metadata responseHeaders = await call.ResponseHeadersAsync;
+
+            var result = await call;
+
+            // Get response trailers after the call has finished.
+            Metadata responseTrailers = call.GetTrailers();
+        }
     }
 }
diff --git a/src/csharp/Grpc.Examples/MathGrpc.cs b/src/csharp/Grpc.Examples/MathGrpc.cs
index 2d3034d..d700a18 100644
--- a/src/csharp/Grpc.Examples/MathGrpc.cs
+++ b/src/csharp/Grpc.Examples/MathGrpc.cs
@@ -151,25 +151,25 @@
       ///  Div divides args.dividend by args.divisor and returns the quotient and
       ///  remainder.
       /// </summary>
-      Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context);
       /// <summary>
       ///  DivMany accepts an arbitrary number of division args from the client stream
       ///  and sends back the results in the reply stream.  The stream continues until
       ///  the client closes its end; the server does the same after sending all the
       ///  replies.  The stream ends immediately if either end aborts.
       /// </summary>
-      Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context);
       /// <summary>
       ///  Fib generates numbers in the Fibonacci sequence.  If args.limit > 0, Fib
       ///  generates up to limit numbers; otherwise it continues until the call is
       ///  canceled.  Unlike Fib above, Fib has no final FibReply.
       /// </summary>
-      Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context);
       /// <summary>
       ///  Sum sums a stream of numbers, returning the final result once the stream
       ///  is closed.
       /// </summary>
-      Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of Math</summary>
@@ -179,7 +179,7 @@
       ///  Div divides args.dividend by args.divisor and returns the quotient and
       ///  remainder.
       /// </summary>
-      public virtual Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -190,7 +190,7 @@
       ///  the client closes its end; the server does the same after sending all the
       ///  replies.  The stream ends immediately if either end aborts.
       /// </summary>
-      public virtual Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -200,7 +200,7 @@
       ///  generates up to limit numbers; otherwise it continues until the call is
       ///  canceled.  Unlike Fib above, Fib has no final FibReply.
       /// </summary>
-      public virtual Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -209,7 +209,7 @@
       ///  Sum sums a stream of numbers, returning the final result once the stream
       ///  is closed.
       /// </summary>
-      public virtual Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
diff --git a/src/csharp/Grpc.Examples/MathServiceImpl.cs b/src/csharp/Grpc.Examples/MathServiceImpl.cs
index 79c56e5..a28020f 100644
--- a/src/csharp/Grpc.Examples/MathServiceImpl.cs
+++ b/src/csharp/Grpc.Examples/MathServiceImpl.cs
@@ -52,23 +52,15 @@
 
         public override async Task Fib(FibArgs request, IServerStreamWriter<Num> responseStream, ServerCallContext context)
         {
-            if (request.Limit <= 0)
-            {
-                // keep streaming the sequence until cancelled.
-                IEnumerator<Num> fibEnumerator = FibInternal(long.MaxValue).GetEnumerator();
-                while (!context.CancellationToken.IsCancellationRequested && fibEnumerator.MoveNext())
-                {
-                    await responseStream.WriteAsync(fibEnumerator.Current);
-                    await Task.Delay(100);
-                }
-            }
+            var limit = request.Limit > 0 ? request.Limit : long.MaxValue;
+            var fibEnumerator = FibInternal(limit).GetEnumerator();
 
-            if (request.Limit > 0)
+            // Keep streaming the sequence until the call is cancelled.
+            // Use CancellationToken from ServerCallContext to detect the cancellation.
+            while (!context.CancellationToken.IsCancellationRequested && fibEnumerator.MoveNext())
             {
-                foreach (var num in FibInternal(request.Limit))
-                {
-                    await responseStream.WriteAsync(num);
-                }
+                await responseStream.WriteAsync(fibEnumerator.Current);
+                await Task.Delay(100);
             }
         }
 
@@ -89,6 +81,13 @@
 
         static DivReply DivInternal(DivArgs args)
         {
+            if (args.Divisor == 0)
+            {
+                // One can finish the RPC with non-ok status by throwing RpcException instance.
+                // Alternatively, resulting status can be set using ServerCallContext.Status
+                throw new RpcException(new Status(StatusCode.InvalidArgument, "Division by zero"));
+            }
+
             long quotient = args.Dividend / args.Divisor;
             long remainder = args.Dividend % args.Divisor;
             return new DivReply { Quotient = quotient, Remainder = remainder };
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index 967d117..51c6a39 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -72,13 +72,13 @@
     [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
     public interface IHealth
     {
-      Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of Health</summary>
     public abstract class HealthBase
     {
-      public virtual Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
diff --git a/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs b/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs
index b457275..9eaf6bf 100644
--- a/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs
@@ -142,8 +142,7 @@
                 for (int i = 0; i < outstandingRpcsPerChannel; i++)
                 {
                     var timer = CreateTimer(loadParams, 1.0 / this.channels.Count / outstandingRpcsPerChannel);
-                    var threadBody = GetThreadBody(channel, timer);
-                    this.runnerTasks.Add(Task.Factory.StartNew(threadBody, TaskCreationOptions.LongRunning));
+                    this.runnerTasks.Add(RunClientAsync(channel, timer));
                 }
             }
         }
@@ -269,38 +268,30 @@
             }
         }
 
-        private Action GetThreadBody(Channel channel, IInterarrivalTimer timer)
+        private Task RunClientAsync(Channel channel, IInterarrivalTimer timer)
         {
             if (payloadConfig.PayloadCase == PayloadConfig.PayloadOneofCase.BytebufParams)
             {
                 GrpcPreconditions.CheckArgument(clientType == ClientType.ASYNC_CLIENT, "Generic client only supports async API");
                 GrpcPreconditions.CheckArgument(rpcType == RpcType.STREAMING, "Generic client only supports streaming calls");
-                return () =>
-                {
-                    RunGenericStreamingAsync(channel, timer).Wait();
-                };
+                return RunGenericStreamingAsync(channel, timer);
             }
 
             GrpcPreconditions.CheckNotNull(payloadConfig.SimpleParams);
             if (clientType == ClientType.SYNC_CLIENT)
             {
                 GrpcPreconditions.CheckArgument(rpcType == RpcType.UNARY, "Sync client can only be used for Unary calls in C#");
-                return () => RunUnary(channel, timer);
+                // create a dedicated thread for the synchronous client
+                return Task.Factory.StartNew(() => RunUnary(channel, timer), TaskCreationOptions.LongRunning);
             }
             else if (clientType == ClientType.ASYNC_CLIENT)
             {
                 switch (rpcType)
                 {
                     case RpcType.UNARY:
-                        return () =>
-                        {
-                            RunUnaryAsync(channel, timer).Wait();
-                        };
+                        return RunUnaryAsync(channel, timer);
                     case RpcType.STREAMING:
-                        return () =>
-                        {
-                            RunStreamingPingPongAsync(channel, timer).Wait();
-                        };
+                        return RunStreamingPingPongAsync(channel, timer);
                 }
             }
             throw new ArgumentException("Unsupported configuration.");
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
index b3b1abf..cff8508 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
@@ -492,6 +492,10 @@
                 {
                     // Deadline was reached before write has started. Eat the exception and continue.
                 }
+                catch (RpcException)
+                {
+                    // Deadline was reached before write has started. Eat the exception and continue.
+                }
 
                 var ex = Assert.ThrowsAsync<RpcException>(async () => await call.ResponseStream.MoveNext());
                 // We can't guarantee the status code always DeadlineExceeded. See issue #2685.
diff --git a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
index aa4f1c5..9d31d1c 100644
--- a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
@@ -112,11 +112,11 @@
       ///  Returns the values of all the gauges that are currently being maintained by
       ///  the service
       /// </summary>
-      Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context);
       /// <summary>
       ///  Returns the value of one gauge
       /// </summary>
-      Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of MetricsService</summary>
@@ -126,7 +126,7 @@
       ///  Returns the values of all the gauges that are currently being maintained by
       ///  the service
       /// </summary>
-      public virtual Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -134,7 +134,7 @@
       /// <summary>
       ///  Returns the value of one gauge
       /// </summary>
-      public virtual Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
diff --git a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
index 42bf5e0..f7071eb 100644
--- a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
@@ -111,12 +111,12 @@
       ///  One request followed by one response.
       ///  The server returns the client payload as-is.
       /// </summary>
-      Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
       /// <summary>
       ///  One request followed by one response.
       ///  The server returns the client payload as-is.
       /// </summary>
-      Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of BenchmarkService</summary>
@@ -126,7 +126,7 @@
       ///  One request followed by one response.
       ///  The server returns the client payload as-is.
       /// </summary>
-      public virtual Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -135,7 +135,7 @@
       ///  One request followed by one response.
       ///  The server returns the client payload as-is.
       /// </summary>
-      public virtual Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -375,7 +375,7 @@
       ///  and once the shutdown has finished, the OK status is sent to terminate
       ///  this RPC.
       /// </summary>
-      Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context);
       /// <summary>
       ///  Start client with specified workload.
       ///  First request sent specifies the ClientConfig followed by ClientStatus
@@ -384,15 +384,15 @@
       ///  and once the shutdown has finished, the OK status is sent to terminate
       ///  this RPC.
       /// </summary>
-      Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context);
       /// <summary>
       ///  Just return the core count - unary call
       /// </summary>
-      Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context);
       /// <summary>
       ///  Quit this worker
       /// </summary>
-      Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of WorkerService</summary>
@@ -406,7 +406,7 @@
       ///  and once the shutdown has finished, the OK status is sent to terminate
       ///  this RPC.
       /// </summary>
-      public virtual Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -419,7 +419,7 @@
       ///  and once the shutdown has finished, the OK status is sent to terminate
       ///  this RPC.
       /// </summary>
-      public virtual Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -427,7 +427,7 @@
       /// <summary>
       ///  Just return the core count - unary call
       /// </summary>
-      public virtual Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -435,7 +435,7 @@
       /// <summary>
       ///  Quit this worker
       /// </summary>
-      public virtual Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index f1878cb..cf43a77 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -196,34 +196,34 @@
       /// <summary>
       ///  One empty request followed by one empty response.
       /// </summary>
-      Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context);
       /// <summary>
       ///  One request followed by one response.
       /// </summary>
-      Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
       /// <summary>
       ///  One request followed by a sequence of responses (streamed download).
       ///  The server returns the payload with client desired type and sizes.
       /// </summary>
-      Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
       /// <summary>
       ///  A sequence of requests followed by one response (streamed upload).
       ///  The server returns the aggregated size of client payload as the result.
       /// </summary>
-      Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context);
       /// <summary>
       ///  A sequence of requests with each request served by the server immediately.
       ///  As one request could lead to multiple responses, this interface
       ///  demonstrates the idea of full duplexing.
       /// </summary>
-      Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
       /// <summary>
       ///  A sequence of requests followed by a sequence of responses.
       ///  The server buffers all the client requests and then serves them in order. A
       ///  stream of responses are returned to the client when the server starts with
       ///  first request.
       /// </summary>
-      Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
+      global::System.Threading.Tasks.Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of TestService</summary>
@@ -232,7 +232,7 @@
       /// <summary>
       ///  One empty request followed by one empty response.
       /// </summary>
-      public virtual Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -240,7 +240,7 @@
       /// <summary>
       ///  One request followed by one response.
       /// </summary>
-      public virtual Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -249,7 +249,7 @@
       ///  One request followed by a sequence of responses (streamed download).
       ///  The server returns the payload with client desired type and sizes.
       /// </summary>
-      public virtual Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -258,7 +258,7 @@
       ///  A sequence of requests followed by one response (streamed upload).
       ///  The server returns the aggregated size of client payload as the result.
       /// </summary>
-      public virtual Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -268,7 +268,7 @@
       ///  As one request could lead to multiple responses, this interface
       ///  demonstrates the idea of full duplexing.
       /// </summary>
-      public virtual Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -279,7 +279,7 @@
       ///  stream of responses are returned to the client when the server starts with
       ///  first request.
       /// </summary>
-      public virtual Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -525,7 +525,7 @@
       /// <summary>
       ///  A call that no server should implement
       /// </summary>
-      Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of UnimplementedService</summary>
@@ -534,7 +534,7 @@
       /// <summary>
       ///  A call that no server should implement
       /// </summary>
-      public virtual Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
@@ -669,19 +669,19 @@
     [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
     public interface IReconnectService
     {
-      Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context);
-      Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context);
+      global::System.Threading.Tasks.Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context);
     }
 
     /// <summary>Base class for server-side implementations of ReconnectService</summary>
     public abstract class ReconnectServiceBase
     {
-      public virtual Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
 
-      public virtual Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context)
       {
         throw new RpcException(new Status(StatusCode.Unimplemented, ""));
       }
diff --git a/src/node/test/math/math_server.js b/src/node/test/math/math_server.js
index fa05ed0..5e3d1dd 100644
--- a/src/node/test/math/math_server.js
+++ b/src/node/test/math/math_server.js
@@ -68,7 +68,7 @@
 function mathFib(stream) {
   // Here, call is a standard writable Node object Stream
   var previous = 0, current = 1;
-  for (var i = 0; i < stream.request.limit; i++) {
+  for (var i = 0; i < stream.request.getLimit(); i++) {
     var response = new math.Num();
     response.setNum(current);
     stream.write(response);
diff --git a/src/node/tools/bin/protoc.js b/src/node/tools/bin/protoc.js
index 4d50c94..53fc5dc 100755
--- a/src/node/tools/bin/protoc.js
+++ b/src/node/tools/bin/protoc.js
@@ -47,10 +47,11 @@
 
 var protoc = path.resolve(__dirname, 'protoc' + exe_ext);
 
-execFile(protoc, process.argv.slice(2), function(error, stdout, stderr) {
+var child_process = execFile(protoc, process.argv.slice(2), function(error, stdout, stderr) {
   if (error) {
     throw error;
   }
-  console.log(stdout);
-  console.log(stderr);
 });
+
+child_process.stdout.pipe(process.stdout);
+child_process.stderr.pipe(process.stderr);
diff --git a/src/node/tools/bin/protoc_plugin.js b/src/node/tools/bin/protoc_plugin.js
index 281ec0d..857882e 100755
--- a/src/node/tools/bin/protoc_plugin.js
+++ b/src/node/tools/bin/protoc_plugin.js
@@ -47,10 +47,12 @@
 
 var plugin = path.resolve(__dirname, 'grpc_node_plugin' + exe_ext);
 
-execFile(plugin, process.argv.slice(2), function(error, stdout, stderr) {
+var child_process = execFile(plugin, process.argv.slice(2), {encoding: 'buffer'}, function(error, stdout, stderr) {
   if (error) {
     throw error;
   }
-  console.log(stdout);
-  console.log(stderr);
 });
+
+process.stdin.pipe(child_process.stdin);
+child_process.stdout.pipe(process.stdout);
+child_process.stderr.pipe(process.stderr);
diff --git a/src/node/tools/package.json b/src/node/tools/package.json
index efdfa81..d4849c2 100644
--- a/src/node/tools/package.json
+++ b/src/node/tools/package.json
@@ -16,8 +16,8 @@
     }
   ],
   "bin": {
-    "grpc-tools-protoc": "./bin/protoc.js",
-    "grpc-tools-plugin": "./bin/protoc_plugin.js"
+    "grpc_tools_node_protoc": "./bin/protoc.js",
+    "grpc_tools_node_protoc_plugin": "./bin/protoc_plugin.js"
   },
   "scripts": {
     "install": "./node_modules/.bin/node-pre-gyp install"
diff --git a/src/objective-c/BoringSSL.podspec b/src/objective-c/BoringSSL.podspec
index 4a6df91..7d1de80 100644
--- a/src/objective-c/BoringSSL.podspec
+++ b/src/objective-c/BoringSSL.podspec
@@ -31,7 +31,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'BoringSSL'
-  s.version  = '2.0'
+  s.version  = '3.0'
   s.summary  = 'BoringSSL is a fork of OpenSSL that is designed to meet Google’s needs.'
   # Adapted from the homepage:
   s.description = <<-DESC
@@ -67,7 +67,7 @@
   s.authors  = 'Adam Langley', 'David Benjamin', 'Matt Braithwaite'
 
   s.source = { :git => 'https://boringssl.googlesource.com/boringssl',
-               :tag => 'version_for_cocoapods_2.0' }
+               :tag => 'version_for_cocoapods_3.0' }
 
   s.source_files = 'ssl/*.{h,c}',
                    'ssl/**/*.{h,c}',
diff --git a/src/php/tests/interop/interop_client.php b/src/php/tests/interop/interop_client.php
index aebf80f..565bfce 100755
--- a/src/php/tests/interop/interop_client.php
+++ b/src/php/tests/interop/interop_client.php
@@ -1,7 +1,7 @@
 <?php
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -388,141 +388,158 @@
              'Call status was not DEADLINE_EXCEEDED');
 }
 
-$args = getopt('', ['server_host:', 'server_port:', 'test_case:',
-                    'use_tls::', 'use_test_ca::',
-                    'server_host_override:', 'oauth_scope:',
-                    'default_service_account:', ]);
-if (!array_key_exists('server_host', $args)) {
-    throw new Exception('Missing argument: --server_host is required');
-}
-if (!array_key_exists('server_port', $args)) {
-    throw new Exception('Missing argument: --server_port is required');
-}
-if (!array_key_exists('test_case', $args)) {
-    throw new Exception('Missing argument: --test_case is required');
-}
-
-if ($args['server_port'] == 443) {
-    $server_address = $args['server_host'];
-} else {
-    $server_address = $args['server_host'].':'.$args['server_port'];
-}
-
-$test_case = $args['test_case'];
-
-$host_override = 'foo.test.google.fr';
-if (array_key_exists('server_host_override', $args)) {
-    $host_override = $args['server_host_override'];
-}
-
-$use_tls = false;
-if (array_key_exists('use_tls', $args) &&
-    $args['use_tls'] != 'false') {
-    $use_tls = true;
-}
-
-$use_test_ca = false;
-if (array_key_exists('use_test_ca', $args) &&
-    $args['use_test_ca'] != 'false') {
-    $use_test_ca = true;
-}
-
-$opts = [];
-
-if ($use_tls) {
-    if ($use_test_ca) {
-        $ssl_credentials = Grpc\ChannelCredentials::createSsl(
-            file_get_contents(dirname(__FILE__).'/../data/ca.pem'));
-    } else {
-        $ssl_credentials = Grpc\ChannelCredentials::createSsl();
+function _makeStub($args)
+{
+    if (!array_key_exists('server_host', $args)) {
+        throw new Exception('Missing argument: --server_host is required');
     }
-    $opts['credentials'] = $ssl_credentials;
-    $opts['grpc.ssl_target_name_override'] = $host_override;
-} else {
-    $opts['credentials'] = Grpc\ChannelCredentials::createInsecure();
-}
+    if (!array_key_exists('server_port', $args)) {
+        throw new Exception('Missing argument: --server_port is required');
+    }
+    if (!array_key_exists('test_case', $args)) {
+        throw new Exception('Missing argument: --test_case is required');
+    }
 
-if (in_array($test_case, ['service_account_creds',
-    'compute_engine_creds', 'jwt_token_creds', ])) {
-    if ($test_case == 'jwt_token_creds') {
-        $auth_credentials = ApplicationDefaultCredentials::getCredentials();
+    if ($args['server_port'] == 443) {
+        $server_address = $args['server_host'];
     } else {
+        $server_address = $args['server_host'].':'.$args['server_port'];
+    }
+
+    $test_case = $args['test_case'];
+
+    $host_override = 'foo.test.google.fr';
+    if (array_key_exists('server_host_override', $args)) {
+        $host_override = $args['server_host_override'];
+    }
+
+    $use_tls = false;
+    if (array_key_exists('use_tls', $args) &&
+        $args['use_tls'] != 'false') {
+        $use_tls = true;
+    }
+
+    $use_test_ca = false;
+    if (array_key_exists('use_test_ca', $args) &&
+        $args['use_test_ca'] != 'false') {
+        $use_test_ca = true;
+    }
+
+    $opts = [];
+
+    if ($use_tls) {
+        if ($use_test_ca) {
+            $ssl_credentials = Grpc\ChannelCredentials::createSsl(
+                file_get_contents(dirname(__FILE__).'/../data/ca.pem'));
+        } else {
+            $ssl_credentials = Grpc\ChannelCredentials::createSsl();
+        }
+        $opts['credentials'] = $ssl_credentials;
+        $opts['grpc.ssl_target_name_override'] = $host_override;
+    } else {
+        $opts['credentials'] = Grpc\ChannelCredentials::createInsecure();
+    }
+
+    if (in_array($test_case, ['service_account_creds',
+                              'compute_engine_creds', 'jwt_token_creds', ])) {
+        if ($test_case == 'jwt_token_creds') {
+            $auth_credentials = ApplicationDefaultCredentials::getCredentials();
+        } else {
+            $auth_credentials = ApplicationDefaultCredentials::getCredentials(
+                $args['oauth_scope']
+            );
+        }
+        $opts['update_metadata'] = $auth_credentials->getUpdateMetadataFunc();
+    }
+
+    if ($test_case == 'oauth2_auth_token') {
         $auth_credentials = ApplicationDefaultCredentials::getCredentials(
             $args['oauth_scope']
         );
+        $token = $auth_credentials->fetchAuthToken();
+        $update_metadata =
+            function ($metadata,
+                      $authUri = null,
+                      ClientInterface $client = null) use ($token) {
+                $metadata_copy = $metadata;
+                $metadata_copy[CredentialsLoader::AUTH_METADATA_KEY] =
+                    [sprintf('%s %s',
+                             $token['token_type'],
+                             $token['access_token'])];
+
+                return $metadata_copy;
+            };
+        $opts['update_metadata'] = $update_metadata;
     }
-    $opts['update_metadata'] = $auth_credentials->getUpdateMetadataFunc();
+
+    $stub = new grpc\testing\TestServiceClient($server_address, $opts);
+
+    return $stub;
 }
 
-if ($test_case == 'oauth2_auth_token') {
-    $auth_credentials = ApplicationDefaultCredentials::getCredentials(
-        $args['oauth_scope']
-    );
-    $token = $auth_credentials->fetchAuthToken();
-    $update_metadata =
-        function ($metadata,
-                  $authUri = null,
-                  ClientInterface $client = null) use ($token) {
-            $metadata_copy = $metadata;
-            $metadata_copy[CredentialsLoader::AUTH_METADATA_KEY] =
-                [sprintf('%s %s',
-                         $token['token_type'],
-                         $token['access_token'])];
+function interop_main($args, $stub = false) {
+    if (!$stub) {
+        $stub = _makeStub($args);
+    }
 
-            return $metadata_copy;
-        };
-    $opts['update_metadata'] = $update_metadata;
+    $test_case = $args['test_case'];
+    echo "Running test case $test_case\n";
+
+    switch ($test_case) {
+        case 'empty_unary':
+            emptyUnary($stub);
+            break;
+        case 'large_unary':
+            largeUnary($stub);
+            break;
+        case 'client_streaming':
+            clientStreaming($stub);
+            break;
+        case 'server_streaming':
+            serverStreaming($stub);
+            break;
+        case 'ping_pong':
+            pingPong($stub);
+            break;
+        case 'empty_stream':
+            emptyStream($stub);
+            break;
+        case 'cancel_after_begin':
+            cancelAfterBegin($stub);
+            break;
+        case 'cancel_after_first_response':
+            cancelAfterFirstResponse($stub);
+            break;
+        case 'timeout_on_sleeping_server':
+            timeoutOnSleepingServer($stub);
+            break;
+        case 'service_account_creds':
+            serviceAccountCreds($stub, $args);
+            break;
+        case 'compute_engine_creds':
+            computeEngineCreds($stub, $args);
+            break;
+        case 'jwt_token_creds':
+            jwtTokenCreds($stub, $args);
+            break;
+        case 'oauth2_auth_token':
+            oauth2AuthToken($stub, $args);
+            break;
+        case 'per_rpc_creds':
+            perRpcCreds($stub, $args);
+            break;
+        default:
+            echo "Unsupported test case $test_case\n";
+            exit(1);
+    }
+
+    return $stub;
 }
 
-$stub = new grpc\testing\TestServiceClient($server_address, $opts);
-
-echo "Connecting to $server_address\n";
-echo "Running test case $test_case\n";
-
-switch ($test_case) {
-    case 'empty_unary':
-        emptyUnary($stub);
-        break;
-    case 'large_unary':
-        largeUnary($stub);
-        break;
-    case 'client_streaming':
-        clientStreaming($stub);
-        break;
-    case 'server_streaming':
-        serverStreaming($stub);
-        break;
-    case 'ping_pong':
-        pingPong($stub);
-        break;
-    case 'empty_stream':
-        emptyStream($stub);
-        break;
-    case 'cancel_after_begin':
-        cancelAfterBegin($stub);
-        break;
-    case 'cancel_after_first_response':
-        cancelAfterFirstResponse($stub);
-        break;
-    case 'timeout_on_sleeping_server':
-        timeoutOnSleepingServer($stub);
-        break;
-    case 'service_account_creds':
-        serviceAccountCreds($stub, $args);
-        break;
-    case 'compute_engine_creds':
-        computeEngineCreds($stub, $args);
-        break;
-    case 'jwt_token_creds':
-        jwtTokenCreds($stub, $args);
-        break;
-    case 'oauth2_auth_token':
-        oauth2AuthToken($stub, $args);
-        break;
-    case 'per_rpc_creds':
-        perRpcCreds($stub, $args);
-        break;
-    default:
-        echo "Unsupported test case $test_case\n";
-        exit(1);
+if (isset($_SERVER['PHP_SELF']) && preg_match('/interop_client/', $_SERVER['PHP_SELF'])) {
+    $args = getopt('', ['server_host:', 'server_port:', 'test_case:',
+                        'use_tls::', 'use_test_ca::',
+                        'server_host_override:', 'oauth_scope:',
+                        'default_service_account:', ]);
+    interop_main($args);
 }
diff --git a/include/grpc/grpc_cronet.h b/src/php/tests/interop/metrics_client.php
similarity index 75%
copy from include/grpc/grpc_cronet.h
copy to src/php/tests/interop/metrics_client.php
index 295e0f5..46f4212 100644
--- a/include/grpc/grpc_cronet.h
+++ b/src/php/tests/interop/metrics_client.php
@@ -1,3 +1,4 @@
+<?php
 /*
  *
  * Copyright 2016, Google Inc.
@@ -31,21 +32,18 @@
  *
  */
 
-#ifndef GRPC_GRPC_CRONET_H
-#define GRPC_GRPC_CRONET_H
+$args = getopt('', ['metrics_server_address:', 'total_only::']);
+$parts = explode(':', $args['metrics_server_address']);
+$server_host = $parts[0];
+$server_port = (count($parts) == 2) ? $parts[1] : '';
 
-#include <grpc/grpc.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved);
-
-#ifdef __cplusplus
+$socket = socket_create(AF_INET, SOCK_STREAM, 0);
+if (@!socket_connect($socket, $server_host, $server_port)) {
+  echo "Cannot connect to merics server...\n";
+  exit(1);
 }
-#endif
-
-#endif /* GRPC_GRPC_CRONET_H */
+socket_write($socket, 'qps');
+while ($out = socket_read($socket, 1024)) {
+  echo "$out\n";
+}
+socket_close($socket);
diff --git a/src/php/tests/interop/stress_client.php b/src/php/tests/interop/stress_client.php
new file mode 100644
index 0000000..2339f0d
--- /dev/null
+++ b/src/php/tests/interop/stress_client.php
@@ -0,0 +1,116 @@
+<?php
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+include_once('interop_client.php');
+
+function stress_main($args) {
+  mt_srand();
+  set_time_limit(0);
+
+  // open socket to listen as metrics server
+  $socket = socket_create(AF_INET, SOCK_STREAM, 0);
+  socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);
+  if (@!socket_bind($socket, 'localhost', $args['metrics_port'])) {
+    echo "Cannot create socket for metrics server...\n";
+    exit(1);
+  }
+  socket_listen($socket);
+  socket_set_nonblock($socket);
+
+  $start_time = microtime(true);
+  $count = 0;
+  $deadline = $args['test_duration_secs'] ?
+              ($start_time + $args['test_duration_secs']) : false;
+  $num_test_cases = count($args['test_cases']);
+  $stub = false;
+
+  while (true) {
+    $current_time = microtime(true);
+    if ($deadline && $current_time > $deadline) {
+      break;
+    }
+    if ($client_connection = socket_accept($socket)) {
+      // there is an incoming request, respond with qps metrics
+      $input = socket_read($client_connection, 1024);
+      $qps = round($count / ($current_time - $start_time));
+      socket_write($client_connection, "qps: $qps");
+      socket_close($client_connection);
+    } else {
+      // do actual work, run one interop test case
+      $args['test_case'] =
+          $args['test_cases'][mt_rand(0, $num_test_cases - 1)];
+      $stub = @interop_main($args, $stub);
+      $count++;
+    }
+  }
+  socket_close($socket);
+  echo "Number of interop tests run in $args[test_duration_secs] seconds: $count.\n";
+}
+
+// process command line arguments
+$raw_args = getopt('',
+  ['server_addresses::',
+   'test_cases:',
+   'metrics_port::',
+   'test_duration_secs::',
+   'num_channels_per_server::',
+   'num_stubs_per_channel::']);
+
+$args = [];
+
+if (empty($raw_args['server_addresses'])) {
+  $args['server_host'] = 'localhost';
+  $args['server_port'] = '8080';
+} else {
+  $parts = explode(':', $raw_args['server_addresses']);
+  $args['server_host'] = $parts[0];
+  $args['server_port'] = (count($parts) == 2) ? $parts[1] : '';
+}
+
+$args['metrics_port'] = empty($raw_args['metrics_port']) ?
+  '8081' : $args['metrics_port'];
+
+$args['test_duration_secs'] = empty($raw_args['test_duration_secs']) ||
+  $raw_args['test_duration_secs'] == -1 ?
+  false : $raw_args['test_duration_secs'];
+
+$test_cases = [];
+$test_case_strs = explode(',', $raw_args['test_cases']);
+foreach ($test_case_strs as $test_case_str) {
+  $parts = explode(':', $test_case_str);
+  $test_cases = array_merge($test_cases, array_fill(0, $parts[1], $parts[0]));
+}
+$args['test_cases'] = $test_cases;
+
+stress_main($args);
diff --git a/src/proto/grpc/lb/v0/load_balancer.options b/src/proto/grpc/lb/v0/load_balancer.options
deleted file mode 100644
index 6d4528f..0000000
--- a/src/proto/grpc/lb/v0/load_balancer.options
+++ /dev/null
@@ -1,6 +0,0 @@
-grpc.lb.v0.InitialLoadBalanceRequest.name max_size:128
-grpc.lb.v0.InitialLoadBalanceResponse.client_config max_size:64
-grpc.lb.v0.InitialLoadBalanceResponse.load_balancer_delegate max_size:64
-grpc.lb.v0.Server.ip_address max_size:46
-grpc.lb.v0.Server.load_balance_token max_size:64
-load_balancer.proto no_unions:true
diff --git a/src/proto/grpc/lb/v1/load_balancer.options b/src/proto/grpc/lb/v1/load_balancer.options
new file mode 100644
index 0000000..d903669
--- /dev/null
+++ b/src/proto/grpc/lb/v1/load_balancer.options
@@ -0,0 +1,6 @@
+grpc.lb.v1.InitialLoadBalanceRequest.name max_size:128
+grpc.lb.v1.InitialLoadBalanceResponse.client_config max_size:64
+grpc.lb.v1.InitialLoadBalanceResponse.load_balancer_delegate max_size:64
+grpc.lb.v1.Server.ip_address max_size:46
+grpc.lb.v1.Server.load_balance_token max_size:64
+load_balancer.proto no_unions:true
diff --git a/src/proto/grpc/lb/v0/load_balancer.proto b/src/proto/grpc/lb/v1/load_balancer.proto
similarity index 94%
rename from src/proto/grpc/lb/v0/load_balancer.proto
rename to src/proto/grpc/lb/v1/load_balancer.proto
index e88a4f8..1bcad0b 100644
--- a/src/proto/grpc/lb/v0/load_balancer.proto
+++ b/src/proto/grpc/lb/v1/load_balancer.proto
@@ -29,7 +29,7 @@
 
 syntax = "proto3";
 
-package grpc.lb.v0;
+package grpc.lb.v1;
 
 message Duration {
 
@@ -94,9 +94,8 @@
 
 message InitialLoadBalanceResponse {
   oneof initial_response_type {
-    // Contains gRPC config options like RPC deadline or flow control.
-    // TODO(yetianx): Change to ClientConfig after it is defined.
-    string client_config = 1;
+    // TODO(zhangkun83): ClientConfig not yet defined
+    //ClientConfig client_config = 1;
 
     // This is an application layer redirect that indicates the client should
     // use the specified server for load balancing. When this field is set in
@@ -134,9 +133,7 @@
   // An opaque token that is passed from the client to the server in metadata.
   // The server may expect this token to indicate that the request from the
   // client was load balanced.
-  // TODO(yetianx): Not used right now, and will be used after implementing
-  // load report.
-  bytes load_balance_token = 3;
+  string load_balance_token = 3;
 
   // Indicates whether this particular request should be dropped by the client
   // when this server is chosen from the list.
diff --git a/src/proto/grpc/testing/echo_messages.proto b/src/proto/grpc/testing/echo_messages.proto
index 1be1966..b405acf 100644
--- a/src/proto/grpc/testing/echo_messages.proto
+++ b/src/proto/grpc/testing/echo_messages.proto
@@ -32,6 +32,12 @@
 
 package grpc.testing;
 
+// Message to be echoed back serialized in trailer.
+message DebugInfo {
+  repeated string stack_entries = 1;
+  string detail = 2;
+}
+
 message RequestParams {
   bool echo_deadline = 1;
   int32 client_cancel_after_us = 2;
@@ -43,6 +49,7 @@
   string expected_client_identity = 8; // will force check_auth_context.
   bool skip_cancelled_check = 9;
   string expected_transport_security_type = 10;
+  DebugInfo debug_info = 11;
 }
 
 message EchoRequest {
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.c b/src/python/grpcio/grpc/_cython/imports.generated.c
index 0955147..f0a40db 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.c
+++ b/src/python/grpcio/grpc/_cython/imports.generated.c
@@ -125,7 +125,6 @@
 grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
 grpc_is_binary_header_type grpc_is_binary_header_import;
 grpc_call_error_to_string_type grpc_call_error_to_string_import;
-grpc_cronet_secure_channel_create_type grpc_cronet_secure_channel_create_import;
 grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
 grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
@@ -396,7 +395,6 @@
   grpc_header_nonbin_value_is_legal_import = (grpc_header_nonbin_value_is_legal_type) GetProcAddress(library, "grpc_header_nonbin_value_is_legal");
   grpc_is_binary_header_import = (grpc_is_binary_header_type) GetProcAddress(library, "grpc_is_binary_header");
   grpc_call_error_to_string_import = (grpc_call_error_to_string_type) GetProcAddress(library, "grpc_call_error_to_string");
-  grpc_cronet_secure_channel_create_import = (grpc_cronet_secure_channel_create_type) GetProcAddress(library, "grpc_cronet_secure_channel_create");
   grpc_auth_property_iterator_next_import = (grpc_auth_property_iterator_next_type) GetProcAddress(library, "grpc_auth_property_iterator_next");
   grpc_auth_context_property_iterator_import = (grpc_auth_context_property_iterator_type) GetProcAddress(library, "grpc_auth_context_property_iterator");
   grpc_auth_context_peer_identity_import = (grpc_auth_context_peer_identity_type) GetProcAddress(library, "grpc_auth_context_peer_identity");
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.h b/src/python/grpcio/grpc/_cython/imports.generated.h
index 54c8aaa..d5e810b 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.h
+++ b/src/python/grpcio/grpc/_cython/imports.generated.h
@@ -43,7 +43,6 @@
 #include <grpc/census.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
-#include <grpc/grpc_cronet.h>
 #include <grpc/grpc_security.h>
 #include <grpc/impl/codegen/alloc.h>
 #include <grpc/impl/codegen/byte_buffer.h>
@@ -326,9 +325,6 @@
 typedef const char *(*grpc_call_error_to_string_type)(grpc_call_error error);
 extern grpc_call_error_to_string_type grpc_call_error_to_string_import;
 #define grpc_call_error_to_string grpc_call_error_to_string_import
-typedef grpc_channel *(*grpc_cronet_secure_channel_create_type)(void *engine, const char *target, const grpc_channel_args *args, void *reserved);
-extern grpc_cronet_secure_channel_create_type grpc_cronet_secure_channel_create_import;
-#define grpc_cronet_secure_channel_create grpc_cronet_secure_channel_create_import
 typedef const grpc_auth_property *(*grpc_auth_property_iterator_next_type)(grpc_auth_property_iterator *it);
 extern grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 #define grpc_auth_property_iterator_next grpc_auth_property_iterator_next_import
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index 5314329..4b98dc1 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -222,11 +222,8 @@
   'src/core/ext/client_config/uri_parser.c',
   'src/core/ext/transport/chttp2/server/insecure/server_chttp2.c',
   'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
-  'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-  'src/core/ext/transport/cronet/transport/cronet_api_dummy.c',
-  'src/core/ext/transport/cronet/transport/cronet_transport.c',
   'src/core/ext/lb_policy/grpclb/load_balancer_api.c',
-  'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c',
+  'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
   'third_party/nanopb/pb_common.c',
   'third_party/nanopb/pb_decode.c',
   'third_party/nanopb/pb_encode.c',
diff --git a/src/python/grpcio/precompiled.py b/src/python/grpcio/precompiled.py
deleted file mode 100644
index b6aa7fc..0000000
--- a/src/python/grpcio/precompiled.py
+++ /dev/null
@@ -1,114 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-import os
-import platform
-import shutil
-import sys
-import sysconfig
-
-import setuptools
-
-import commands
-import grpc_version
-
-try:
-  from urllib2 import urlopen
-except ImportError:
-  from urllib.request import urlopen
-
-PYTHON_STEM = os.path.dirname(os.path.abspath(__file__))
-BINARIES_REPOSITORY = os.environ.get(
-    'GRPC_PYTHON_BINARIES_REPOSITORY',
-    'https://storage.googleapis.com/grpc-precompiled-binaries/python')
-USE_PRECOMPILED_BINARIES = bool(int(os.environ.get(
-    'GRPC_PYTHON_USE_PRECOMPILED_BINARIES', '1')))
-
-def _tagged_ext_name(base):
-  uname = platform.uname()
-  tags = (
-      grpc_version.VERSION,
-      'py{}'.format(sysconfig.get_python_version()),
-      uname[0],
-      uname[4],
-  )
-  ucs = 'ucs{}'.format(sysconfig.get_config_var('Py_UNICODE_SIZE'))
-  return '{base}-{tags}-{ucs}'.format(
-      base=base, tags='-'.join(tags), ucs=ucs)
-
-
-class BuildTaggedExt(setuptools.Command):
-
-  description = 'build the gRPC tagged extensions'
-  user_options = []
-
-  def initialize_options(self):
-    # distutils requires this override.
-    pass
-
-  def finalize_options(self):
-    # distutils requires this override.
-    pass
-
-  def run(self):
-    if 'linux' in sys.platform:
-      self.run_command('build_ext')
-      try:
-        os.makedirs('dist/')
-      except OSError:
-        pass
-      shutil.copyfile(
-          os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so'),
-          'dist/{}.so'.format(_tagged_ext_name('cygrpc')))
-    else:
-      sys.stderr.write('nothing to do for build_tagged_ext\n')
-
-
-def update_setup_arguments(setup_arguments):
-  if not USE_PRECOMPILED_BINARIES:
-    sys.stderr.write('not using precompiled extension')
-    return
-  url = '{}/{}.so'.format(BINARIES_REPOSITORY, _tagged_ext_name('cygrpc'))
-  target_path = os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so')
-  try:
-    extension = urlopen(url).read()
-  except:
-    sys.stderr.write(
-        'could not download precompiled extension: {}\n'.format(url))
-    return
-  try:
-    with open(target_path, 'w') as target:
-      target.write(extension)
-    setup_arguments['ext_modules'] = []
-  except:
-    sys.stderr.write(
-        'could not write precompiled extension to directory: {} -> {}\n'
-            .format(url, target_path))
-    return
-  setup_arguments['package_data']['grpc._cython'].append('cygrpc.so')
diff --git a/src/python/grpcio/tests/qps/benchmark_client.py b/src/python/grpcio/tests/qps/benchmark_client.py
index eed0b0c..b372ea0 100644
--- a/src/python/grpcio/tests/qps/benchmark_client.py
+++ b/src/python/grpcio/tests/qps/benchmark_client.py
@@ -39,6 +39,7 @@
 from concurrent import futures
 
 from grpc.beta import implementations
+from grpc.framework.interfaces.face import face
 from src.proto.grpc.testing import messages_pb2
 from src.proto.grpc.testing import services_pb2
 from tests.unit import resources
@@ -141,10 +142,10 @@
     self._stub = None
 
 
-class StreamingAsyncBenchmarkClient(BenchmarkClient):
+class StreamingSyncBenchmarkClient(BenchmarkClient):
 
   def __init__(self, server, config, hist):
-    super(StreamingAsyncBenchmarkClient, self).__init__(server, config, hist)
+    super(StreamingSyncBenchmarkClient, self).__init__(server, config, hist)
     self._is_streaming = False
     self._pool = futures.ThreadPoolExecutor(max_workers=1)
     # Use a thread-safe queue to put requests on the stream
@@ -167,12 +168,12 @@
   def _request_stream(self):
     self._is_streaming = True
     if self._generic:
-      response_stream = self._stub.inline_stream_stream(
-          'grpc.testing.BenchmarkService', 'StreamingCall',
-          self._request_generator(), _TIMEOUT)
+      stream_callable = self._stub.stream_stream(
+          'grpc.testing.BenchmarkService', 'StreamingCall')
     else:
-      response_stream = self._stub.StreamingCall(self._request_generator(),
-                                                 _TIMEOUT)
+      stream_callable = self._stub.StreamingCall
+
+    response_stream = stream_callable(self._request_generator(), _TIMEOUT)
     for _ in response_stream:
       end_time = time.time()
       self._handle_response(end_time - self._send_time_queue.get_nowait())
@@ -184,3 +185,48 @@
         yield request
       except queue.Empty:
         pass
+
+
+class AsyncReceiver(face.ResponseReceiver):
+  """Receiver for async stream responses."""
+
+  def __init__(self, send_time_queue, response_handler):
+    self._send_time_queue = send_time_queue
+    self._response_handler = response_handler
+
+  def initial_metadata(self, initial_mdetadata):
+    pass
+
+  def response(self, response):
+    end_time = time.time()
+    self._response_handler(end_time - self._send_time_queue.get_nowait())
+
+  def complete(self, terminal_metadata, code, details):
+    pass
+
+
+class StreamingAsyncBenchmarkClient(BenchmarkClient):
+
+  def __init__(self, server, config, hist):
+    super(StreamingAsyncBenchmarkClient, self).__init__(server, config, hist)
+    self._send_time_queue = queue.Queue()
+    self._receiver = AsyncReceiver(self._send_time_queue, self._handle_response)
+    self._rendezvous = None
+
+  def send_request(self):
+    if self._rendezvous is not None:
+      self._send_time_queue.put(time.time())
+      self._rendezvous.consume(self._request)
+
+  def start(self):
+    if self._generic:
+      stream_callable = self._stub.stream_stream(
+          'grpc.testing.BenchmarkService', 'StreamingCall')
+    else:
+      stream_callable = self._stub.StreamingCall
+    self._rendezvous = stream_callable.event(
+        self._receiver, lambda *args: None, _TIMEOUT)
+
+  def stop(self):
+    self._rendezvous.terminate()
+    self._rendezvous = None
diff --git a/src/python/grpcio/tests/qps/client_runner.py b/src/python/grpcio/tests/qps/client_runner.py
index a36c30c..1ede7d2 100644
--- a/src/python/grpcio/tests/qps/client_runner.py
+++ b/src/python/grpcio/tests/qps/client_runner.py
@@ -89,9 +89,9 @@
 
   def start(self):
     self._is_running = True
+    self._client.start()
     for _ in xrange(self._request_count):
       self._client.send_request()
-    self._client.start()
 
   def stop(self):
     self._is_running = False
diff --git a/src/python/grpcio/tests/qps/worker_server.py b/src/python/grpcio/tests/qps/worker_server.py
index 0b3acc1..1f9af54 100644
--- a/src/python/grpcio/tests/qps/worker_server.py
+++ b/src/python/grpcio/tests/qps/worker_server.py
@@ -146,8 +146,9 @@
       if config.rpc_type == control_pb2.UNARY:
         client = benchmark_client.UnarySyncBenchmarkClient(
             server, config, qps_data)
-      else:
-        raise Exception('STREAMING SYNC client not supported')
+      elif config.rpc_type == control_pb2.STREAMING:
+        client = benchmark_client.StreamingSyncBenchmarkClient(
+            server, config, qps_data)
     elif config.client_type == control_pb2.ASYNC_CLIENT:
       if config.rpc_type == control_pb2.UNARY:
         client = benchmark_client.UnaryAsyncBenchmarkClient(
diff --git a/src/python/grpcio/tests/stress/client.py b/src/python/grpcio/tests/stress/client.py
index a733741..e2e0167 100644
--- a/src/python/grpcio/tests/stress/client.py
+++ b/src/python/grpcio/tests/stress/client.py
@@ -117,7 +117,10 @@
   for runner in runners:
     runner.start()
   try:
-    raise exception_queue.get(block=True, timeout=args.test_duration_secs)
+    timeout_secs = args.test_duration_secs
+    if timeout_secs < 0:
+      timeout_secs = None
+    raise exception_queue.get(block=True, timeout=timeout_secs)
   except Queue.Empty:
     # No exceptions thrown, success
     pass
diff --git a/src/python/grpcio/tests/unit/_cython/_channel_test.py b/src/python/grpcio/tests/unit/_cython/_channel_test.py
index b414f8e..931cd90 100644
--- a/src/python/grpcio/tests/unit/_cython/_channel_test.py
+++ b/src/python/grpcio/tests/unit/_cython/_channel_test.py
@@ -33,8 +33,7 @@
 
 from grpc._cython import cygrpc
 
-# TODO(nathaniel): This should be at least one hundred. Why not one thousand?
-_PARALLELISM = 4
+from tests.unit.framework.common import test_constants
 
 
 def _channel_and_completion_queue():
@@ -61,7 +60,7 @@
 def _in_parallel(behavior, arguments):
   threads = tuple(
       threading.Thread(target=behavior, args=arguments)
-      for _ in range(_PARALLELISM))
+      for _ in range(test_constants.PARALLELISM))
   for thread in threads:
     thread.start()
   for thread in threads:
diff --git a/src/ruby/ext/grpc/rb_grpc.c b/src/ruby/ext/grpc/rb_grpc.c
index 06a07ac..5277148 100644
--- a/src/ruby/ext/grpc/rb_grpc.c
+++ b/src/ruby/ext/grpc/rb_grpc.c
@@ -50,6 +50,7 @@
 #include "rb_loader.h"
 #include "rb_server.h"
 #include "rb_server_credentials.h"
+#include "rb_signal.h"
 
 static VALUE grpc_rb_cTimeVal = Qnil;
 
@@ -332,6 +333,7 @@
   Init_grpc_channel_credentials();
   Init_grpc_server();
   Init_grpc_server_credentials();
+  Init_grpc_signals();
   Init_grpc_status_codes();
   Init_grpc_time_consts();
 }
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index cebbe8c..bc43f9d 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -125,7 +125,6 @@
 grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
 grpc_is_binary_header_type grpc_is_binary_header_import;
 grpc_call_error_to_string_type grpc_call_error_to_string_import;
-grpc_cronet_secure_channel_create_type grpc_cronet_secure_channel_create_import;
 grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
 grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
@@ -392,7 +391,6 @@
   grpc_header_nonbin_value_is_legal_import = (grpc_header_nonbin_value_is_legal_type) GetProcAddress(library, "grpc_header_nonbin_value_is_legal");
   grpc_is_binary_header_import = (grpc_is_binary_header_type) GetProcAddress(library, "grpc_is_binary_header");
   grpc_call_error_to_string_import = (grpc_call_error_to_string_type) GetProcAddress(library, "grpc_call_error_to_string");
-  grpc_cronet_secure_channel_create_import = (grpc_cronet_secure_channel_create_type) GetProcAddress(library, "grpc_cronet_secure_channel_create");
   grpc_auth_property_iterator_next_import = (grpc_auth_property_iterator_next_type) GetProcAddress(library, "grpc_auth_property_iterator_next");
   grpc_auth_context_property_iterator_import = (grpc_auth_context_property_iterator_type) GetProcAddress(library, "grpc_auth_context_property_iterator");
   grpc_auth_context_peer_identity_import = (grpc_auth_context_peer_identity_type) GetProcAddress(library, "grpc_auth_context_peer_identity");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index d7ea6c5..b67361c 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -43,7 +43,6 @@
 #include <grpc/census.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
-#include <grpc/grpc_cronet.h>
 #include <grpc/grpc_security.h>
 #include <grpc/impl/codegen/alloc.h>
 #include <grpc/impl/codegen/byte_buffer.h>
@@ -326,9 +325,6 @@
 typedef const char *(*grpc_call_error_to_string_type)(grpc_call_error error);
 extern grpc_call_error_to_string_type grpc_call_error_to_string_import;
 #define grpc_call_error_to_string grpc_call_error_to_string_import
-typedef grpc_channel *(*grpc_cronet_secure_channel_create_type)(void *engine, const char *target, const grpc_channel_args *args, void *reserved);
-extern grpc_cronet_secure_channel_create_type grpc_cronet_secure_channel_create_import;
-#define grpc_cronet_secure_channel_create grpc_cronet_secure_channel_create_import
 typedef const grpc_auth_property *(*grpc_auth_property_iterator_next_type)(grpc_auth_property_iterator *it);
 extern grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 #define grpc_auth_property_iterator_next grpc_auth_property_iterator_next_import
diff --git a/src/ruby/ext/grpc/rb_signal.c b/src/ruby/ext/grpc/rb_signal.c
new file mode 100644
index 0000000..a9e5123
--- /dev/null
+++ b/src/ruby/ext/grpc/rb_signal.c
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <ruby/ruby.h>
+#include <signal.h>
+#include <stdbool.h>
+
+#include <grpc/support/log.h>
+
+#include "rb_grpc.h"
+
+static void (*old_sigint_handler)(int);
+static void (*old_sigterm_handler)(int);
+
+static volatile bool signal_received = false;
+
+/* This has to be handled at the C level instead of Ruby, because Ruby signal
+ * handlers are constrained to run in the main interpreter thread. If that main
+ * thread is blocked on grpc_completion_queue_pluck, the signal handlers will
+ * never run */
+static void handle_signal(int signum) {
+  signal_received = true;
+  if (signum == SIGINT) {
+    old_sigint_handler(signum);
+  } else if (signum == SIGTERM) {
+    old_sigterm_handler(signum);
+  }
+}
+
+static VALUE grpc_rb_signal_received(VALUE self) {
+  (void)self;
+  return signal_received ? Qtrue : Qfalse;
+}
+
+void Init_grpc_signals() {
+  old_sigint_handler = signal(SIGINT, handle_signal);
+  old_sigterm_handler = signal(SIGTERM, handle_signal);
+  rb_define_singleton_method(grpc_rb_mGrpcCore, "signal_received?",
+                             grpc_rb_signal_received, 0);
+}
diff --git a/include/grpc/grpc_cronet.h b/src/ruby/ext/grpc/rb_signal.h
similarity index 82%
rename from include/grpc/grpc_cronet.h
rename to src/ruby/ext/grpc/rb_signal.h
index 295e0f5..07e49c0 100644
--- a/include/grpc/grpc_cronet.h
+++ b/src/ruby/ext/grpc/rb_signal.h
@@ -31,21 +31,9 @@
  *
  */
 
-#ifndef GRPC_GRPC_CRONET_H
-#define GRPC_GRPC_CRONET_H
+#ifndef GRPC_RB_SIGNAL_H_
+#define GRPC_RB_SIGNAL_H_
 
-#include <grpc/grpc.h>
+void Init_grpc_signals();
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* GRPC_GRPC_CRONET_H */
+#endif  /* GRPC_RB_SIGNAL_H_ */
diff --git a/src/ruby/lib/grpc.rb b/src/ruby/lib/grpc.rb
index 79fa705..7c9aae3 100644
--- a/src/ruby/lib/grpc.rb
+++ b/src/ruby/lib/grpc.rb
@@ -33,6 +33,7 @@
 require_relative 'grpc/grpc'
 require_relative 'grpc/logconfig'
 require_relative 'grpc/notifier'
+require_relative 'grpc/signals'
 require_relative 'grpc/version'
 require_relative 'grpc/core/time_consts'
 require_relative 'grpc/generic/active_call'
@@ -47,3 +48,5 @@
 ensure
   file.close
 end
+
+GRPC::Signals.wait_for_signals
diff --git a/src/ruby/lib/grpc/generic/active_call.rb b/src/ruby/lib/grpc/generic/active_call.rb
index ecf3cc3..fd20a86 100644
--- a/src/ruby/lib/grpc/generic/active_call.rb
+++ b/src/ruby/lib/grpc/generic/active_call.rb
@@ -28,7 +28,9 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require 'forwardable'
+require 'weakref'
 require_relative 'bidi_call'
+require_relative '../signals'
 
 class Struct
   # BatchResult is the struct returned by calls to call#start_batch.
@@ -121,6 +123,10 @@
       @unmarshal = unmarshal
       @metadata_tag = metadata_tag
       @op_notifier = nil
+      weak_self = WeakRef.new(self)
+      remove_handler = GRPC::Signals.register_handler(&weak_self
+                                                        .method(:cancel))
+      ObjectSpace.define_finalizer(self, remove_handler)
     end
 
     # output_metadata are provides access to hash that can be used to
diff --git a/src/ruby/lib/grpc/generic/client_stub.rb b/src/ruby/lib/grpc/generic/client_stub.rb
index 68e167a..12946fe 100644
--- a/src/ruby/lib/grpc/generic/client_stub.rb
+++ b/src/ruby/lib/grpc/generic/client_stub.rb
@@ -49,7 +49,12 @@
         fail(TypeError, '!Channel') unless alt_chan.is_a?(Core::Channel)
         return alt_chan
       end
-      kw['grpc.primary_user_agent'] = "grpc-ruby/#{VERSION}"
+      if kw['grpc.primary_user_agent'].nil?
+        kw['grpc.primary_user_agent'] = ''
+      else
+        kw['grpc.primary_user_agent'] += ' '
+      end
+      kw['grpc.primary_user_agent'] += "grpc-ruby/#{VERSION}"
       unless creds.is_a?(Core::ChannelCredentials) || creds.is_a?(Symbol)
         fail(TypeError, '!ChannelCredentials or Symbol')
       end
diff --git a/src/ruby/lib/grpc/generic/rpc_server.rb b/src/ruby/lib/grpc/generic/rpc_server.rb
index a0f4071..238aaa9 100644
--- a/src/ruby/lib/grpc/generic/rpc_server.rb
+++ b/src/ruby/lib/grpc/generic/rpc_server.rb
@@ -28,46 +28,13 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require_relative '../grpc'
+require_relative '../signals'
 require_relative 'active_call'
 require_relative 'service'
 require 'thread'
 
-# A global that contains signals the gRPC servers should respond to.
-$grpc_signals = []
-
 # GRPC contains the General RPC module.
 module GRPC
-  # Handles the signals in $grpc_signals.
-  #
-  # @return false if the server should exit, true if not.
-  def handle_signals
-    loop do
-      sig = $grpc_signals.shift
-      case sig
-      when 'INT'
-        return false
-      when 'TERM'
-        return false
-      when nil
-        return true
-      end
-    end
-    true
-  end
-  module_function :handle_signals
-
-  # Sets up a signal handler that adds signals to the signal handling global.
-  #
-  # Signal handlers should do as little as humanly possible.
-  # Here, they just add themselves to $grpc_signals
-  #
-  # RpcServer (and later other parts of gRPC) monitors the signals
-  # $grpc_signals in its own non-signal context.
-  def trap_signals
-    %w(INT TERM).each { |sig| trap(sig) { $grpc_signals << sig } }
-  end
-  module_function :trap_signals
-
   # Pool is a simple thread pool.
   class Pool
     # Default keep alive period is 1s
@@ -328,23 +295,6 @@
       end
     end
 
-    # Runs the server in its own thread, then waits for signal INT or TERM on
-    # the current thread to terminate it.
-    def run_till_terminated
-      GRPC.trap_signals
-      t = Thread.new do
-        run
-      end
-      t.abort_on_exception = true
-      wait_till_running
-      until running_state == :stopped
-        sleep SIGNAL_CHECK_PERIOD
-        break unless GRPC.handle_signals
-      end
-      stop
-      t.join
-    end
-
     # handle registration of classes
     #
     # service is either a class that includes GRPC::GenericService and whose
@@ -403,9 +353,14 @@
         transition_running_state(:running)
         @run_cond.broadcast
       end
+      remove_signal_handler = GRPC::Signals.register_handler { stop }
       loop_handle_server_calls
+      # Remove signal handler when server stops
+      remove_signal_handler.call
     end
 
+    alias_method :run_till_terminated, :run
+
     # Sends RESOURCE_EXHAUSTED if there are too many unprocessed jobs
     def available?(an_rpc)
       jobs_count, max = @pool.jobs_waiting, @max_waiting_requests
@@ -503,10 +458,8 @@
       unless cls.include?(GenericService)
         fail "#{cls} must 'include GenericService'"
       end
-      if cls.rpc_descs.size.zero?
-        fail "#{cls} should specify some rpc descriptions"
-      end
-      cls.assert_rpc_descs_have_methods
+      fail "#{cls} should specify some rpc descriptions" if
+        cls.rpc_descs.size.zero?
     end
 
     # This should be called while holding @run_mutex
diff --git a/src/ruby/lib/grpc/generic/service.rb b/src/ruby/lib/grpc/generic/service.rb
index 8e940b5..0a166e8 100644
--- a/src/ruby/lib/grpc/generic/service.rb
+++ b/src/ruby/lib/grpc/generic/service.rb
@@ -110,6 +110,9 @@
         rpc_descs[name] = RpcDesc.new(name, input, output,
                                       marshal_class_method,
                                       unmarshal_class_method)
+        define_method(name) do
+          fail GRPC::BadStatus, GRPC::Core::StatusCodes::UNIMPLEMENTED
+        end
       end
 
       def inherited(subclass)
@@ -199,19 +202,6 @@
           end
         end
       end
-
-      # Asserts that the appropriate methods are defined for each added rpc
-      # spec. Is intended to aid verifying that server classes are correctly
-      # implemented.
-      def assert_rpc_descs_have_methods
-        rpc_descs.each_pair do |m, spec|
-          mth_name = GenericService.underscore(m.to_s).to_sym
-          unless instance_methods.include?(mth_name)
-            fail "#{self} does not provide instance method '#{mth_name}'"
-          end
-          spec.assert_arity_matches(instance_method(mth_name))
-        end
-      end
     end
 
     def self.included(o)
diff --git a/src/ruby/lib/grpc/signals.rb b/src/ruby/lib/grpc/signals.rb
new file mode 100644
index 0000000..2ab85c8
--- /dev/null
+++ b/src/ruby/lib/grpc/signals.rb
@@ -0,0 +1,69 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require 'thread'
+require_relative 'grpc'
+
+# GRPC contains the General RPC module.
+module GRPC
+  # Signals contains gRPC functions related to signal handling
+  module Signals
+    @interpreter_exiting = false
+    @signal_handlers = []
+    @handlers_mutex = Mutex.new
+
+    def register_handler(&handler)
+      @handlers_mutex.synchronize do
+        @signal_handlers.push(handler)
+        handler.call if @exit_signal_received
+      end
+      # Returns a function to remove the handler
+      lambda do
+        @handlers_mutex.synchronize { @signal_handlers.delete(handler) }
+      end
+    end
+    module_function :register_handler
+
+    def wait_for_signals
+      t = Thread.new do
+        sleep 0.1 until GRPC::Core.signal_received? || @interpreter_exiting
+        unless @interpreter_exiting
+          @handlers_mutex.synchronize do
+            @signal_handlers.each(&:call)
+          end
+        end
+      end
+      at_exit do
+        @interpreter_exiting = true
+        t.join
+      end
+    end
+    module_function :wait_for_signals
+  end
+end
diff --git a/src/ruby/spec/generic/rpc_server_spec.rb b/src/ruby/spec/generic/rpc_server_spec.rb
index e688057..2a42736 100644
--- a/src/ruby/spec/generic/rpc_server_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_spec.rb
@@ -308,10 +308,6 @@
       expect { @srv.handle(EmptyService) }.to raise_error
     end
 
-    it 'raises if the service does not define its rpc methods' do
-      expect { @srv.handle(NoRpcImplementation) }.to raise_error
-    end
-
     it 'raises if a handler method is already registered' do
       @srv.handle(EchoService)
       expect { r.handle(EchoService) }.to raise_error
@@ -349,6 +345,25 @@
         t.join
       end
 
+      it 'should return UNIMPLEMENTED on unimplemented methods', server: true do
+        @srv.handle(NoRpcImplementation)
+        t = Thread.new { @srv.run }
+        @srv.wait_till_running
+        req = EchoMsg.new
+        blk = proc do
+          cq = GRPC::Core::CompletionQueue.new
+          stub = GRPC::ClientStub.new(@host, cq, :this_channel_is_insecure,
+                                      **client_opts)
+          stub.request_response('/an_rpc', req, marshal, unmarshal)
+        end
+        expect(&blk).to raise_error do |error|
+          expect(error).to be_a(GRPC::BadStatus)
+          expect(error.code).to be(GRPC::Core::StatusCodes::UNIMPLEMENTED)
+        end
+        @srv.stop
+        t.join
+      end
+
       it 'should handle multiple sequential requests', server: true do
         @srv.handle(EchoService)
         t = Thread.new { @srv.run }
diff --git a/src/ruby/spec/generic/service_spec.rb b/src/ruby/spec/generic/service_spec.rb
index 5e7b6c7..76034e4 100644
--- a/src/ruby/spec/generic/service_spec.rb
+++ b/src/ruby/spec/generic/service_spec.rb
@@ -273,73 +273,4 @@
       end
     end
   end
-
-  describe '#assert_rpc_descs_have_methods' do
-    it 'fails if there is no instance method for an rpc descriptor' do
-      c1 = Class.new do
-        include GenericService
-        rpc :AnRpc, GoodMsg, GoodMsg
-      end
-      expect { c1.assert_rpc_descs_have_methods }.to raise_error
-
-      c2 = Class.new do
-        include GenericService
-        rpc :AnRpc, GoodMsg, GoodMsg
-        rpc :AnotherRpc, GoodMsg, GoodMsg
-
-        def an_rpc
-        end
-      end
-      expect { c2.assert_rpc_descs_have_methods }.to raise_error
-    end
-
-    it 'passes if there are corresponding methods for each descriptor' do
-      c = Class.new do
-        include GenericService
-        rpc :AnRpc, GoodMsg, GoodMsg
-        rpc :AServerStreamer, GoodMsg, stream(GoodMsg)
-        rpc :AClientStreamer, stream(GoodMsg), GoodMsg
-        rpc :ABidiStreamer, stream(GoodMsg), stream(GoodMsg)
-
-        def an_rpc(_req, _call)
-        end
-
-        def a_server_streamer(_req, _call)
-        end
-
-        def a_client_streamer(_call)
-        end
-
-        def a_bidi_streamer(_call)
-        end
-      end
-      expect { c.assert_rpc_descs_have_methods }.to_not raise_error
-    end
-
-    it 'passes for subclasses of that include GenericService' do
-      base = Class.new do
-        include GenericService
-        rpc :AnRpc, GoodMsg, GoodMsg
-
-        def an_rpc(_req, _call)
-        end
-      end
-      c = Class.new(base)
-      expect { c.assert_rpc_descs_have_methods }.to_not raise_error
-      expect(c.include?(GenericService)).to be(true)
-    end
-
-    it 'passes if subclasses define the rpc methods' do
-      base = Class.new do
-        include GenericService
-        rpc :AnRpc, GoodMsg, GoodMsg
-      end
-      c = Class.new(base) do
-        def an_rpc(_req, _call)
-        end
-      end
-      expect { c.assert_rpc_descs_have_methods }.to_not raise_error
-      expect(c.include?(GenericService)).to be(true)
-    end
-  end
 end
diff --git a/src/ruby/tools/bin/protoc.rb b/src/ruby/tools/bin/grpc_tools_ruby_protoc.rb
similarity index 100%
rename from src/ruby/tools/bin/protoc.rb
rename to src/ruby/tools/bin/grpc_tools_ruby_protoc.rb
diff --git a/src/ruby/tools/bin/protoc_grpc_ruby_plugin.rb b/src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin.rb
similarity index 100%
rename from src/ruby/tools/bin/protoc_grpc_ruby_plugin.rb
rename to src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin.rb
diff --git a/src/ruby/tools/grpc-tools.gemspec b/src/ruby/tools/grpc-tools.gemspec
index af904de..9fa4b66 100644
--- a/src/ruby/tools/grpc-tools.gemspec
+++ b/src/ruby/tools/grpc-tools.gemspec
@@ -18,5 +18,5 @@
 
   s.platform = Gem::Platform::RUBY
 
-  s.executables = %w( protoc.rb protoc_grpc_ruby_plugin.rb )
+  s.executables = %w( grpc_tools_ruby_protoc.rb grpc_tools_ruby_protoc_plugin.rb )
 end
diff --git a/templates/Makefile.template b/templates/Makefile.template
index e84ceeb..0d5f0ec 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -49,6 +49,19 @@
 
     sources_that_need_openssl = set()
     sources_that_don_t_need_openssl = set()
+
+    # warnings we'd like, but that dont exist in all compilers
+    PREFERRED_WARNINGS=['shadow', 'extra-semi']
+    CHECK_WARNINGS=PREFERRED_WARNINGS + ['no-shift-negative-value']
+
+    def warning_var(fmt, warning):
+      return fmt % warning.replace('-', '_').upper()
+
+    def neg_warning(warning):
+      if warning[0:3] == 'no-':
+        return warning[3:]
+      else:
+        return 'no-' + warning
   %>
 
 
@@ -187,17 +200,14 @@
   CXX11_CHECK_CMD = $(CXX) -std=c++11 -o $(TMPOUT) -c test/build/c++11.cc
   HAS_CXX11 = $(shell $(CXX11_CHECK_CMD) 2> /dev/null && echo true || echo false)
 
-  CHECK_SHADOW_WORKS_CMD = $(CC) -std=c99 -Werror -Wshadow -o $(TMPOUT) -c test/build/shadow.c
-  HAS_WORKING_SHADOW = $(shell $(CHECK_SHADOW_WORKS_CMD) 2> /dev/null && echo true || echo false)
-  ifeq ($(HAS_WORKING_SHADOW),true)
-  W_SHADOW=-Wshadow
+  %for warning in CHECK_WARNINGS:
+  ${warning_var('CHECK_%s_WORKS_CMD', warning)} = $(CC) -std=c99 -Werror -W${warning} -o $(TMPOUT) -c test/build/${warning}.c
+  ${warning_var('HAS_WORKING_%s', warning)} = $(shell $(${warning_var('CHECK_%s_WORKS_CMD', warning)}) 2> /dev/null && echo true || echo false)
+  ifeq ($(${warning_var('HAS_WORKING_%s', warning)}),true)
+  ${warning_var('W_%s', warning)}=-W${warning}
+  ${warning_var('NO_W_%s', warning)}=-W${neg_warning(warning)}
   endif
-
-  CHECK_NO_SHIFT_NEGATIVE_VALUE_CMD = $(CC) -std=c99 -Werror -Wno-shift-negative-value -o $(TMPOUT) -c test/build/empty.c
-  HAS_NO_SHIFT_NEGATIVE_VALUE = $(shell $(CHECK_NO_SHIFT_NEGATIVE_VALUE_CMD) 2> /dev/null && echo true || echo false)
-  ifeq ($(HAS_NO_SHIFT_NEGATIVE_VALUE),true)
-  W_NO_SHIFT_NEGATIVE_VALUE=-Wno-shift-negative-value
-  endif
+  %endfor
 
   # The HOST compiler settings are used to compile the protoc plugins.
   # In most cases, you won't have to change anything, but if you are
@@ -213,7 +223,7 @@
   DEFINES += $(EXTRA_DEFINES)
   endif
 
-  CFLAGS += -std=c99 -Wsign-conversion -Wconversion $(W_SHADOW)
+  CFLAGS += -std=c99 -Wsign-conversion -Wconversion ${' '.join(warning_var('$(W_%s)', warning) for warning in PREFERRED_WARNINGS)}
   ifeq ($(HAS_CXX11),true)
   CXXFLAGS += -std=c++11
   else
@@ -1698,7 +1708,7 @@
   # boringssl needs an override to ensure that it does not include
   # system openssl headers regardless of other configuration
   # we do so here with a target specific variable assignment
-  $(${tgt.name.upper()}_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value
+  $(${tgt.name.upper()}_OBJS): CFLAGS := -Ithird_party/boringssl/include $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value $(NO_W_EXTRA_SEMI)
   $(${tgt.name.upper()}_OBJS): CXXFLAGS := -Ithird_party/boringssl/include $(CXXFLAGS)
   $(${tgt.name.upper()}_OBJS): CPPFLAGS += -DOPENSSL_NO_ASM -D_GNU_SOURCE
   % else:
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
index a9948a4..979cb1e 100644
--- a/templates/gRPC.podspec.template
+++ b/templates/gRPC.podspec.template
@@ -54,7 +54,7 @@
   %>
   Pod::Spec.new do |s|
     s.name     = 'gRPC'
-    version = '0.12.0'
+    version = '0.14.0'
     s.version  = version
     s.summary  = 'gRPC client library for iOS/OSX'
     s.homepage = 'http://www.grpc.io'
@@ -62,7 +62,8 @@
     s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
     s.source = { :git => 'https://github.com/grpc/grpc.git',
-                 :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}" }
+                 :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}",
+                 :submodules => true }
 
   
     s.ios.deployment_target = '7.1'
@@ -97,7 +98,7 @@
 
       ss.requires_arc = false
       ss.libraries = 'z'
-      ss.dependency 'BoringSSL', '~> 2.0'
+      ss.dependency 'BoringSSL', '~> 3.0'
 
       # ss.compiler_flags = '-GCC_WARN_INHIBIT_ALL_WARNINGS', '-w'
     end
diff --git a/templates/package.json.template b/templates/package.json.template
index 11718b1..9d19ca0 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -69,6 +69,8 @@
       "src/node/ext",
       "include/grpc",
       "src/core",
+      "src/boringssl",
+      "src/zlib",
       "third_party/nanopb",
       "third_party/zlib",
       "third_party/boringssl",
diff --git a/templates/src/node/tools/package.json.template b/templates/src/node/tools/package.json.template
index 4f673c4..69ad71a 100644
--- a/templates/src/node/tools/package.json.template
+++ b/templates/src/node/tools/package.json.template
@@ -18,8 +18,8 @@
       }
     ],
     "bin": {
-      "grpc-tools-protoc": "./bin/protoc.js",
-      "grpc-tools-plugin": "./bin/protoc_plugin.js"
+      "grpc_tools_node_protoc": "./bin/protoc.js",
+      "grpc_tools_node_protoc_plugin": "./bin/protoc_plugin.js"
     },
     "scripts": {
       "install": "./node_modules/.bin/node-pre-gyp install"
diff --git a/templates/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile.template b/templates/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile.template
new file mode 100644
index 0000000..27e9eee
--- /dev/null
+++ b/templates/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile.template
@@ -0,0 +1,45 @@
+%YAML 1.2
+--- |
+  # Copyright 2016, Google Inc.
+  # All rights reserved.
+  #
+  # Redistribution and use in source and binary forms, with or without
+  # modification, are permitted provided that the following conditions are
+  # met:
+  #
+  #     * Redistributions of source code must retain the above copyright
+  # notice, this list of conditions and the following disclaimer.
+  #     * Redistributions in binary form must reproduce the above
+  # copyright notice, this list of conditions and the following disclaimer
+  # in the documentation and/or other materials provided with the
+  # distribution.
+  #     * Neither the name of Google Inc. nor the names of its
+  # contributors may be used to endorse or promote products derived from
+  # this software without specific prior written permission.
+  #
+  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  
+  FROM debian:jessie
+  
+  <%include file="../../apt_get_basic.include"/>
+  <%include file="../../ccache_setup.include"/>
+  <%include file="../../cxx_deps.include"/>
+  <%include file="../../gcp_api_libraries.include"/>
+  <%include file="../../python_deps.include"/>
+
+  RUN pip install coverage
+  RUN pip install oauth2client
+
+  # Define the default command.
+  CMD ["bash"]
+  
diff --git a/include/grpc/grpc_cronet.h b/test/build/extra-semi.c
similarity index 81%
copy from include/grpc/grpc_cronet.h
copy to test/build/extra-semi.c
index 295e0f5..60466dd 100644
--- a/include/grpc/grpc_cronet.h
+++ b/test/build/extra-semi.c
@@ -31,21 +31,4 @@
  *
  */
 
-#ifndef GRPC_GRPC_CRONET_H
-#define GRPC_GRPC_CRONET_H
-
-#include <grpc/grpc.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* GRPC_GRPC_CRONET_H */
+int main(void) {}
diff --git a/include/grpc/grpc_cronet.h b/test/build/no-shift-negative-value.c
similarity index 80%
copy from include/grpc/grpc_cronet.h
copy to test/build/no-shift-negative-value.c
index 295e0f5..58e4698 100644
--- a/include/grpc/grpc_cronet.h
+++ b/test/build/no-shift-negative-value.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2016, Google Inc.
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,21 +31,4 @@
  *
  */
 
-#ifndef GRPC_GRPC_CRONET_H
-#define GRPC_GRPC_CRONET_H
-
-#include <grpc/grpc.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* GRPC_GRPC_CRONET_H */
+int main(void) {}
diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index cd5b541..e582068 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -75,9 +75,22 @@
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
-void grpc_run_bad_client_test(grpc_bad_client_server_side_validator validator,
-                              const char *client_payload,
-                              size_t client_payload_length, uint32_t flags) {
+typedef struct {
+  grpc_bad_client_client_stream_validator validator;
+  gpr_slice_buffer incoming;
+  gpr_event read_done;
+} read_args;
+
+static void read_done(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  read_args *a = arg;
+  a->validator(&a->incoming);
+  gpr_event_set(&a->read_done, (void *)1);
+}
+
+void grpc_run_bad_client_test(
+    grpc_bad_client_server_side_validator server_validator,
+    grpc_bad_client_client_stream_validator client_validator,
+    const char *client_payload, size_t client_payload_length, uint32_t flags) {
   grpc_endpoint_pair sfd;
   thd_args a;
   gpr_thd_id id;
@@ -108,7 +121,7 @@
   a.cq = grpc_completion_queue_create(NULL);
   gpr_event_init(&a.done_thd);
   gpr_event_init(&a.done_write);
-  a.validator = validator;
+  a.validator = server_validator;
   grpc_server_register_completion_queue(a.server, a.cq, NULL);
   a.registered_method =
       grpc_server_register_method(a.server, GRPC_BAD_CLIENT_REGISTERED_METHOD,
@@ -151,8 +164,23 @@
 
   GPR_ASSERT(gpr_event_wait(&a.done_thd, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
 
-  /* Shutdown */
-  if (sfd.client) {
+  if (sfd.client != NULL) {
+    // Validate client stream, if requested.
+    if (client_validator != NULL) {
+      read_args args;
+      args.validator = client_validator;
+      gpr_slice_buffer_init(&args.incoming);
+      gpr_event_init(&args.read_done);
+      grpc_closure read_done_closure;
+      grpc_closure_init(&read_done_closure, read_done, &args);
+      grpc_endpoint_read(&exec_ctx, sfd.client, &args.incoming,
+                         &read_done_closure);
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(
+          gpr_event_wait(&args.read_done, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
+      gpr_slice_buffer_destroy(&args.incoming);
+    }
+    // Shutdown.
     grpc_endpoint_shutdown(&exec_ctx, sfd.client);
     grpc_endpoint_destroy(&exec_ctx, sfd.client);
     grpc_exec_ctx_finish(&exec_ctx);
diff --git a/test/core/bad_client/bad_client.h b/test/core/bad_client/bad_client.h
index 19ddba8..c8b2a41 100644
--- a/test/core/bad_client/bad_client.h
+++ b/test/core/bad_client/bad_client.h
@@ -44,18 +44,24 @@
                                                       grpc_completion_queue *cq,
                                                       void *registered_method);
 
+typedef void (*grpc_bad_client_client_stream_validator)(
+    gpr_slice_buffer *incoming);
+
 #define GRPC_BAD_CLIENT_DISCONNECT 1
 
 /* Test runner.
 
    Create a server, and send client_payload to it as bytes from a client.
-   Execute validator in a separate thread to assert that the bytes are
+   Execute server_validator in a separate thread to assert that the bytes are
    handled as expected. */
-void grpc_run_bad_client_test(grpc_bad_client_server_side_validator validator,
-                              const char *client_payload,
-                              size_t client_payload_length, uint32_t flags);
+void grpc_run_bad_client_test(
+    grpc_bad_client_server_side_validator server_validator,
+    grpc_bad_client_client_stream_validator client_validator,
+    const char *client_payload, size_t client_payload_length, uint32_t flags);
 
-#define GRPC_RUN_BAD_CLIENT_TEST(validator, payload, flags) \
-  grpc_run_bad_client_test(validator, payload, sizeof(payload) - 1, flags)
+#define GRPC_RUN_BAD_CLIENT_TEST(server_validator, client_validator, payload, \
+                                 flags)                                       \
+  grpc_run_bad_client_test(server_validator, client_validator, payload,       \
+                           sizeof(payload) - 1, flags)
 
 #endif /* GRPC_TEST_CORE_BAD_CLIENT_BAD_CLIENT_H */
diff --git a/test/core/bad_client/gen_build_yaml.py b/test/core/bad_client/gen_build_yaml.py
index d49858e..fb86525 100755
--- a/test/core/bad_client/gen_build_yaml.py
+++ b/test/core/bad_client/gen_build_yaml.py
@@ -29,7 +29,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-"""Generates the appropriate build.json data for all the end2end tests."""
+"""Generates the appropriate build.json data for all the bad_client tests."""
 
 
 import collections
@@ -45,6 +45,7 @@
     'headers': default_test_options._replace(cpu_cost=0.2),
     'initial_settings_frame': default_test_options._replace(cpu_cost=0.2),
     'head_of_line_blocking': default_test_options,
+    'large_metadata': default_test_options,
     'server_registered_method': default_test_options,
     'simple_request': default_test_options,
     'window_overflow': default_test_options,
diff --git a/test/core/bad_client/tests/badreq.c b/test/core/bad_client/tests/badreq.c
index b17e3b3..5d9ffef 100644
--- a/test/core/bad_client/tests/badreq.c
+++ b/test/core/bad_client/tests/badreq.c
@@ -56,7 +56,7 @@
 
   /* invalid content type */
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier, PFX_STR
+      verifier, NULL, PFX_STR
       "\x00\x00\xc2\x01\x04\x00\x00\x00\x01"
       "\x10\x05:path\x08/foo/bar"
       "\x10\x07:scheme\x04http"
@@ -71,7 +71,7 @@
 
   /* invalid te */
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier, PFX_STR
+      verifier, NULL, PFX_STR
       "\x00\x00\xcb\x01\x04\x00\x00\x00\x01"
       "\x10\x05:path\x08/foo/bar"
       "\x10\x07:scheme\x04http"
@@ -88,7 +88,7 @@
 
   /* two path headers */
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier, PFX_STR
+      verifier, NULL, PFX_STR
       "\x00\x00\xd9\x01\x04\x00\x00\x00\x01"
       "\x10\x05:path\x08/foo/bar"
       "\x10\x05:path\x08/foo/bah"
@@ -105,7 +105,7 @@
 
   /* bad accept-encoding algorithm */
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier, PFX_STR
+      verifier, NULL, PFX_STR
       "\x00\x00\xd2\x01\x04\x00\x00\x00\x01"
       "\x10\x05:path\x08/foo/bar"
       "\x10\x07:scheme\x04http"
@@ -121,7 +121,7 @@
 
   /* bad grpc-encoding algorithm */
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier, PFX_STR
+      verifier, NULL, PFX_STR
       "\x00\x00\xf5\x01\x04\x00\x00\x00\x01"
       "\x10\x05:path\x08/foo/bar"
       "\x10\x07:scheme\x04http"
diff --git a/test/core/bad_client/tests/connection_prefix.c b/test/core/bad_client/tests/connection_prefix.c
index 9a30aad..bc5ed2e 100644
--- a/test/core/bad_client/tests/connection_prefix.c
+++ b/test/core/bad_client/tests/connection_prefix.c
@@ -46,29 +46,30 @@
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
 
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRIX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI *X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTPX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0X", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\rX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\nX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\rX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nSX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nSMX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nSM\rX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nSM\r\nX", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, "PRI * HTTP/2.0\r\n\r\nSM\r\n\rX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRIX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI *X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTPX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0X", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\rX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\nX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\rX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nSX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nSMX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nSM\rX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nSM\r\nX", 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, "PRI * HTTP/2.0\r\n\r\nSM\r\n\rX",
+                           0);
   return 0;
 }
diff --git a/test/core/bad_client/tests/head_of_line_blocking.c b/test/core/bad_client/tests/head_of_line_blocking.c
index 53cd453..e4051bb 100644
--- a/test/core/bad_client/tests/head_of_line_blocking.c
+++ b/test/core/bad_client/tests/head_of_line_blocking.c
@@ -144,7 +144,7 @@
     addbuf(hdr, sizeof(hdr));
     addbuf(msg, FRAME_SIZE);
   }
-  grpc_run_bad_client_test(verifier, g_buffer, g_count, 0);
+  grpc_run_bad_client_test(verifier, NULL, g_buffer, g_count, 0);
   gpr_free(g_buffer);
 
   return 0;
diff --git a/test/core/bad_client/tests/headers.c b/test/core/bad_client/tests/headers.c
index 4c1a767..f872e50 100644
--- a/test/core/bad_client/tests/headers.c
+++ b/test/core/bad_client/tests/headers.c
@@ -51,249 +51,251 @@
   grpc_test_init(argc, argv);
 
   /* partial http2 header prefixes */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x01\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x04",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x01\x04",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x05",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x01\x05",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x04\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x01\x04\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x04\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
+                           PFX_STR "\x00\x00\x00\x01\x04\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x01\x04\x00\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
+                           PFX_STR "\x00\x00\x00\x01\x04\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x01\x04\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x01\x04\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
   /* test adding prioritization data */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x01\x01\x24\x00\x00\x00\x01"
                            "\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x02\x01\x24\x00\x00\x00\x01"
                            "\x00\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x24\x00\x00\x00\x01"
                            "\x00\x00\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x24\x00\x00\x00\x01"
                            "\x00\x00\x00\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x24\x00\x00\x00\x01"
                            "\x00\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
   /* test looking up an invalid index */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x01\x01\x04\x00\x00\x00\x01"
                            "\xfe",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x04\x00\x00\x00\x01"
                            "\x7f\x7f\x01"
                            "a",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x04\x00\x00\x00\x01"
                            "\x0f\x7f\x01"
                            "a",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x04\x00\x00\x00\x01"
                            "\x1f\x7f\x01"
                            "a",
                            0);
   /* test nvr, not indexed in static table */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\x01\x01"
                            "a",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\x11\x01"
                            "a",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* illegal op code */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x01\x01\x04\x00\x00\x00\x01"
                            "\x80",
                            0);
   /* parse some long indices */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x02\x01\x04\x00\x00\x00\x01"
                            "\xff\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x06\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x07\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x80\x00",
                            0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x80\x80",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x80\x80\x00",
                            0);
   /* overflow on byte 4 */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x06\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x7f",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x06\x01\x04\x00\x00\x00\x01"
                            "\xff\xff\xff\xff\xff\x0f",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* overflow after byte 4 */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x08\x01\x04\x00\x00\x00\x01"
                            "\xff\x80\x80\x80\x80\x80\x80\x02",
                            0);
   /* end of headers mid-opcode */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x01\x01\x04\x00\x00\x00\x01"
                            "\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
   /* dynamic table size update: set to default */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\x3f\xe1\x1f",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* dynamic table size update: set too large */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\x3f\xf1\x1f",
                            0);
   /* dynamic table size update: set twice */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x04\x01\x04\x00\x00\x00\x01"
                            "\x20\x3f\xe1\x1f",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* dynamic table size update: set thrice */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x03\x01\x04\x00\x00\x00\x01"
                            "\x20\x20\x20",
                            0);
 
   /* non-ending header followed by continuation frame */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x00\x01\x00\x00\x00\x00\x01"
                            "\x00\x00\x00\x09\x04\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* non-ending header followed by non-continuation frame */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x00\x01\x00\x00\x00\x00\x01"
                            "\x00\x00\x00\x00\x04\x00\x00\x00\x01",
                            0);
   /* non-ending header followed by a continuation frame for a different stream
    */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x00\x01\x04\x00\x00\x00\x01"
                            "\x00\x00\x00\x01\x00\x00\x00\x00\x03"
                            "\x00\x00\x00\x09\x04\x00\x00\x00\x01",
                            0);
   /* opening with a continuation frame */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x09\x04\x00\x00\x00\x01", 0);
   /* three header frames */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x00\x01\x04\x00\x00\x00\x01"
                            "\x00\x00\x00\x01\x04\x00\x00\x00\x01"
                            "\x00\x00\x00\x01\x04\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
   /* an invalid header found with fuzzing */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x01\x39\x67\xed\x1d\x64",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
   /* a badly encoded timeout value */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x19\x01\x04\x00\x00\x00\x01"
                            "\x10\x0cgrpc-timeout\x0a"
                            "15 seconds",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* a badly encoded timeout value: twice (catches caching) */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x19\x01\x04\x00\x00\x00\x01"
                            "\x10\x0cgrpc-timeout\x0a"
                            "15 seconds"
diff --git a/test/core/bad_client/tests/initial_settings_frame.c b/test/core/bad_client/tests/initial_settings_frame.c
index 63a770d..b84b67a 100644
--- a/test/core/bad_client/tests/initial_settings_frame.c
+++ b/test/core/bad_client/tests/initial_settings_frame.c
@@ -50,70 +50,72 @@
   grpc_test_init(argc, argv);
 
   /* various partial prefixes */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x06",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x06",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x06",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x06",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x06",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x06",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x04",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x04\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\x01",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x04\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\xff",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x04\xff",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR "\x00\x00\x00\x04\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\x00\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
+                           PFX_STR "\x00\x00\x00\x04\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR "\x00\x00\x00\x04\x00\x00\x00\x00",
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
+                           PFX_STR "\x00\x00\x00\x04\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* must not send frames with stream id != 0 */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x04\x00\x00\x00\x00\x01", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x04\x00\x40\x00\x00\x00", 0);
   /* settings frame must be a multiple of six bytes long */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x01\x04\x00\x00\x00\x00\x00", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x02\x04\x00\x00\x00\x00\x00", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x03\x04\x00\x00\x00\x00\x00", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x04\x04\x00\x00\x00\x00\x00", 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x05\x04\x00\x00\x00\x00\x00", 0);
   /* some settings values are illegal */
   /* max frame size = 0 */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR ONE_SETTING_HDR "\x00\x05\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR ONE_SETTING_HDR "\x00\x06\xff\xff\xff\xff",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* update intiial window size */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR ONE_SETTING_HDR "\x00\x04\x00\x01\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* ack with data */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x00\x04\x00\x00\x00\x00\x00"
                            "\x00\x00\x01\x04\x01\x00\x00\x00\x00",
                            0);
   /* settings frame with invalid flags */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x04\x10\x00\x00\x00\x00", 0);
   /* unknown settings should be ignored */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR ONE_SETTING_HDR "\x00\x99\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
diff --git a/test/core/bad_client/tests/large_metadata.c b/test/core/bad_client/tests/large_metadata.c
new file mode 100644
index 0000000..1a8d2a2
--- /dev/null
+++ b/test/core/bad_client/tests/large_metadata.c
@@ -0,0 +1,489 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/bad_client/bad_client.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include "src/core/lib/surface/server.h"
+#include "test/core/end2end/cq_verifier.h"
+
+#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_STR                              \
+  "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"     /* settings frame */              \
+  "\x00\x00\x00\x04\x00\x00\x00\x00\x00" /* headers: generated from        \
+                                            large_metadata.headers in this \
+                                            directory */                   \
+  "\x00"                                                                   \
+  "5{\x01\x05\x00\x00\x00\x01"                                             \
+  "\x10\x05:path\x08/foo/bar"                                              \
+  "\x10\x07:scheme\x04http"                                                \
+  "\x10\x07:method\x04POST"                                                \
+  "\x10\x0a:authority\x09localhost"                                        \
+  "\x10\x0c"                                                               \
+  "content-type\x10"                                                       \
+  "application/grpc"                                                       \
+  "\x10\x14grpc-accept-encoding\x15identity,deflate,gzip"                  \
+  "\x10\x02te\x08trailers"                                                 \
+  "\x10\x0auser-agent\"bad-client grpc-c/0.12.0.0 (linux)"                 \
+  "\x10\x0duser-header00~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header01~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header02~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header03~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header04~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header05~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header06~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header07~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header08~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header09~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header10~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header11~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header12~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header13~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header14~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header15~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header16~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header17~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header18~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header19~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header20~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header21~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header22~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header23~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header24~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header25~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header26~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header27~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header28~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header29~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header30~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header31~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header32~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header33~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header34~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header35~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header36~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header37~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header38~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header39~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header40~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header41~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header42~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header43~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header44~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header45~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header46~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header47~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header48~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header49~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header50~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header51~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header52~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header53~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header54~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header55~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header56~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header57~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header58~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header59~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header60~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header61~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header62~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header63~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header64~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header65~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header66~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header67~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header68~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header69~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header70~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header71~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header72~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header73~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header74~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header75~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header76~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header77~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header78~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header79~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header80~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header81~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header82~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header83~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header84~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header85~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header86~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header87~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header88~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header89~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header90~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header91~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header92~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header93~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"                                                               \
+  "\x10\x0duser-header94~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
+  "aaaaaaaa"
+
+#define PFX_TOO_MUCH_METADATA_FROM_SERVER_STR                                              \
+  "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* settings frame: sets                               \
+                                        MAX_HEADER_LIST_SIZE to 16K */                     \
+  "\x00\x00\x06\x04\x00\x00\x00\x00\x00\x00\x06\x00\x00\x40\x00" /* headers:               \
+                                                                    generated              \
+                                                                    from                   \
+                                                                    simple_request.headers \
+                                                                    in this                \
+                                                                    directory              \
+                                                                    */                     \
+  "\x00\x00\xc9\x01\x04\x00\x00\x00\x01"                                                   \
+  "\x10\x05:path\x08/foo/bar"                                                              \
+  "\x10\x07:scheme\x04http"                                                                \
+  "\x10\x07:method\x04POST"                                                                \
+  "\x10\x0a:authority\x09localhost"                                                        \
+  "\x10\x0c"                                                                               \
+  "content-type\x10"                                                                       \
+  "application/grpc"                                                                       \
+  "\x10\x14grpc-accept-encoding\x15"                                                       \
+  "deflate,identity,gzip"                                                                  \
+  "\x10\x02te\x08trailers"                                                                 \
+  "\x10\x0auser-agent\"bad-client grpc-c/0.12.0.0 (linux)"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static void server_verifier(grpc_server *server, grpc_completion_queue *cq,
+                            void *registered_method) {
+  grpc_call_error error;
+  grpc_call *s;
+  grpc_call_details call_details;
+  cq_verifier *cqv = cq_verifier_create(cq);
+  grpc_metadata_array request_metadata_recv;
+
+  grpc_call_details_init(&call_details);
+  grpc_metadata_array_init(&request_metadata_recv);
+
+  error = grpc_server_request_call(server, &s, &call_details,
+                                   &request_metadata_recv, cq, cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(0 == strcmp(call_details.host, "localhost"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo/bar"));
+
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_call_destroy(s);
+  cq_verifier_destroy(cqv);
+}
+
+static void server_verifier_sends_too_much_metadata(grpc_server *server,
+                                                    grpc_completion_queue *cq,
+                                                    void *registered_method) {
+  grpc_call_error error;
+  grpc_call *s;
+  grpc_call_details call_details;
+  cq_verifier *cqv = cq_verifier_create(cq);
+  grpc_metadata_array request_metadata_recv;
+
+  grpc_call_details_init(&call_details);
+  grpc_metadata_array_init(&request_metadata_recv);
+
+  error = grpc_server_request_call(server, &s, &call_details,
+                                   &request_metadata_recv, cq, cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(0 == strcmp(call_details.host, "localhost"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo/bar"));
+
+  const size_t metadata_value_size = 16 * 1024;
+  grpc_metadata meta;
+  meta.key = "key";
+  meta.value = gpr_malloc(metadata_value_size + 1);
+  memset((char *)meta.value, 'a', metadata_value_size);
+  ((char *)meta.value)[metadata_value_size] = 0;
+  meta.value_length = metadata_value_size;
+
+  grpc_op op;
+  op.op = GRPC_OP_SEND_INITIAL_METADATA;
+  op.data.send_initial_metadata.count = 1;
+  op.data.send_initial_metadata.metadata = &meta;
+  op.flags = 0;
+  op.reserved = NULL;
+  error = grpc_call_start_batch(s, &op, 1, tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  cq_expect_completion(cqv, tag(102), 0);  // Operation fails.
+  cq_verify(cqv);
+
+  gpr_free((char *)meta.value);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_call_destroy(s);
+  cq_verifier_destroy(cqv);
+}
+
+static void client_validator(gpr_slice_buffer *incoming) {
+  // Get last frame from incoming slice buffer.
+  gpr_slice_buffer last_frame_buffer;
+  gpr_slice_buffer_init(&last_frame_buffer);
+  gpr_slice_buffer_trim_end(incoming, 13, &last_frame_buffer);
+  GPR_ASSERT(last_frame_buffer.count == 1);
+  gpr_slice last_frame = last_frame_buffer.slices[0];
+  // Construct expected frame.
+  gpr_slice expected = gpr_slice_malloc(13);
+  uint8_t *p = GPR_SLICE_START_PTR(expected);
+  // Length.
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 4;
+  // Frame type (RST_STREAM).
+  *p++ = 3;
+  // Flags.
+  *p++ = 0;
+  // Stream ID.
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 1;
+  // Payload (error code).
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 11;
+  // Compare actual and expected.
+  GPR_ASSERT(gpr_slice_cmp(last_frame, expected) == 0);
+  gpr_slice_buffer_destroy(&last_frame_buffer);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+
+  // Test sending more metadata than the server will accept.
+  GRPC_RUN_BAD_CLIENT_TEST(server_verifier, client_validator,
+                           PFX_TOO_MUCH_METADATA_FROM_CLIENT_STR, 0);
+
+  // Test sending more metadata than the client will accept.
+  GRPC_RUN_BAD_CLIENT_TEST(server_verifier_sends_too_much_metadata,
+                           client_validator,
+                           PFX_TOO_MUCH_METADATA_FROM_SERVER_STR, 0);
+
+  return 0;
+}
diff --git a/test/core/bad_client/tests/large_metadata.headers b/test/core/bad_client/tests/large_metadata.headers
new file mode 100644
index 0000000..75de3ef
--- /dev/null
+++ b/test/core/bad_client/tests/large_metadata.headers
@@ -0,0 +1,106 @@
+# headers used in simple_request.c
+# use tools/codegen/core/gen_header_frame.py --set_end_stream to generate
+# the binary strings contained in the source code
+:path: /foo/bar
+:scheme: http
+:method: POST
+:authority: localhost
+content-type: application/grpc
+grpc-accept-encoding: identity,deflate,gzip
+te: trailers
+user-agent: bad-client grpc-c/0.12.0.0 (linux)
+user-header00: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header01: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header02: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header03: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header04: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header05: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header06: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header07: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header08: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header09: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header10: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header11: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header15: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header16: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header17: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header18: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header19: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header20: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header21: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header22: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header23: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header24: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header25: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header26: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header27: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header28: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header29: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header30: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header31: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header32: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header33: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header34: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header35: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header36: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header37: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header38: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header39: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header40: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header41: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header42: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header43: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header44: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header45: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header46: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header47: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header48: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header49: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header50: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header51: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header52: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header53: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header54: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header55: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header56: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header57: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header58: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header59: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header60: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header61: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header62: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header63: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header64: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header65: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header66: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header67: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header68: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header69: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header70: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header71: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header72: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header73: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header74: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header75: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header76: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header77: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header78: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header79: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header80: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header81: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header82: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header83: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header84: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header85: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header86: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header87: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header88: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header89: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header90: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header91: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header92: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header93: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+user-header94: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
diff --git a/test/core/bad_client/tests/server_registered_method.c b/test/core/bad_client/tests/server_registered_method.c
index 60d3b89..6216553 100644
--- a/test/core/bad_client/tests/server_registered_method.c
+++ b/test/core/bad_client/tests/server_registered_method.c
@@ -111,43 +111,43 @@
 
   /* body generated with
    * tools/codegen/core/gen_server_registered_method_bad_client_test_body.py */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, NULL,
                            PFX_STR "\x00\x00\x00\x00\x00\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, NULL,
                            PFX_STR "\x00\x00\x01\x00\x00\x00\x00\x00\x01\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, NULL, PFX_STR
                            "\x00\x00\x02\x00\x00\x00\x00\x00\x01\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier_fails, NULL, PFX_STR
                            "\x00\x00\x03\x00\x00\x00\x00\x00\x01\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_fails,
+      verifier_fails, NULL,
       PFX_STR "\x00\x00\x04\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00",
       GRPC_BAD_CLIENT_DISCONNECT);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_succeeds,
+      verifier_succeeds, NULL,
       PFX_STR "\x00\x00\x05\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\x00", 0);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_fails,
+      verifier_fails, NULL,
       PFX_STR "\x00\x00\x05\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x01",
       GRPC_BAD_CLIENT_DISCONNECT);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_succeeds,
+      verifier_succeeds, NULL,
       PFX_STR "\x00\x00\x06\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\x01\x00",
       0);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_fails,
+      verifier_fails, NULL,
       PFX_STR "\x00\x00\x05\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x02",
       GRPC_BAD_CLIENT_DISCONNECT);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_fails,
+      verifier_fails, NULL,
       PFX_STR "\x00\x00\x06\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x02\x00",
       GRPC_BAD_CLIENT_DISCONNECT);
   GRPC_RUN_BAD_CLIENT_TEST(
-      verifier_succeeds, PFX_STR
+      verifier_succeeds, NULL, PFX_STR
       "\x00\x00\x07\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\x02\x00\x00",
       0);
 
diff --git a/test/core/bad_client/tests/simple_request.c b/test/core/bad_client/tests/simple_request.c
index 3ae6eb3..25bbe96 100644
--- a/test/core/bad_client/tests/simple_request.c
+++ b/test/core/bad_client/tests/simple_request.c
@@ -139,42 +139,42 @@
   grpc_test_init(argc, argv);
 
   /* basic request: check that things are working */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR, 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR_UNUSUAL, 0);
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR_UNUSUAL2, 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR, 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR_UNUSUAL, 0);
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR_UNUSUAL2, 0);
 
   /* push an illegal data frame */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL, PFX_STR
                            "\x00\x00\x05\x00\x00\x00\x00\x00\x01"
                            "\x34\x00\x00\x00\x00",
                            0);
 
   /* push a data frame with bad flags */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x00\x02\x00\x00\x00\x01", 0);
   /* push a window update with a bad length */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x00\x01\x08\x00\x00\x00\x00\x01", 0);
   /* push a window update with bad flags */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x00\x00\x08\x10\x00\x00\x00\x01", 0);
   /* push a window update with bad data */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, PFX_STR
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL, PFX_STR
                            "\x00\x00\x04\x08\x00\x00\x00\x00\x01"
                            "\xff\xff\xff\xff",
                            0);
   /* push a short goaway */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x00\x04\x07\x00\x00\x00\x00\x00", 0);
   /* disconnect before sending goaway */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x01\x12\x07\x00\x00\x00\x00\x00",
                            GRPC_BAD_CLIENT_DISCONNECT);
   /* push a rst_stream with a bad length */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x00\x01\x03\x00\x00\x00\x00\x01", 0);
   /* push a rst_stream with bad flags */
-  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(failure_verifier, NULL,
                            PFX_STR "\x00\x00\x00\x03\x10\x00\x00\x00\x01", 0);
 
   return 0;
diff --git a/test/core/bad_client/tests/unknown_frame.c b/test/core/bad_client/tests/unknown_frame.c
index f3870a1..4f483d2 100644
--- a/test/core/bad_client/tests/unknown_frame.c
+++ b/test/core/bad_client/tests/unknown_frame.c
@@ -51,7 +51,7 @@
   grpc_test_init(argc, argv);
 
   /* test adding prioritization data */
-  GRPC_RUN_BAD_CLIENT_TEST(verifier,
+  GRPC_RUN_BAD_CLIENT_TEST(verifier, NULL,
                            PFX_STR "\x00\x00\x00\x88\x00\x00\x00\x00\x01",
                            GRPC_BAD_CLIENT_DISCONNECT);
 
diff --git a/test/core/bad_client/tests/window_overflow.c b/test/core/bad_client/tests/window_overflow.c
index 16f11e7..0d17dbe 100644
--- a/test/core/bad_client/tests/window_overflow.c
+++ b/test/core/bad_client/tests/window_overflow.c
@@ -105,7 +105,7 @@
       addbuf(message, sizeof(message));
     }
   }
-  grpc_run_bad_client_test(verifier, g_buffer, g_count, 0);
+  grpc_run_bad_client_test(verifier, NULL, g_buffer, g_count, 0);
   gpr_free(g_buffer);
 
   return 0;
diff --git a/test/core/client_config/lb_policies_test.c b/test/core/client_config/lb_policies_test.c
index e766672..2ec4612 100644
--- a/test/core/client_config/lb_policies_test.c
+++ b/test/core/client_config/lb_policies_test.c
@@ -438,9 +438,9 @@
   return calls;
 }
 
-static void assert_channel_connectivity(
-    grpc_channel *ch, size_t num_accepted_conn_states,
-    grpc_connectivity_state accepted_conn_state, ...) {
+static void assert_channel_connectivity(grpc_channel *ch,
+                                        size_t num_accepted_conn_states,
+                                        int accepted_conn_state, ...) {
   size_t i;
   grpc_channel_stack *client_stack;
   grpc_channel_element *client_channel_filter;
@@ -456,7 +456,7 @@
   grpc_exec_ctx_finish(&exec_ctx);
   va_start(ap, accepted_conn_state);
   for (i = 0; i < num_accepted_conn_states; i++) {
-    if (actual_conn_state == accepted_conn_state) {
+    if ((int)actual_conn_state == accepted_conn_state) {
       break;
     }
     accepted_conn_state = va_arg(ap, grpc_connectivity_state);
diff --git a/test/core/end2end/fixtures/h2_proxy.c b/test/core/end2end/fixtures/h2_proxy.c
index 863673a..8c50eeb 100644
--- a/test/core/end2end/fixtures/h2_proxy.c
+++ b/test/core/end2end/fixtures/h2_proxy.c
@@ -55,14 +55,16 @@
   grpc_end2end_proxy *proxy;
 } fullstack_fixture_data;
 
-static grpc_server *create_proxy_server(const char *port) {
-  grpc_server *s = grpc_server_create(NULL, NULL);
+static grpc_server *create_proxy_server(const char *port,
+                                        grpc_channel_args *server_args) {
+  grpc_server *s = grpc_server_create(server_args, NULL);
   GPR_ASSERT(grpc_server_add_insecure_http2_port(s, port));
   return s;
 }
 
-static grpc_channel *create_proxy_client(const char *target) {
-  return grpc_insecure_channel_create(target, NULL, NULL);
+static grpc_channel *create_proxy_client(const char *target,
+                                         grpc_channel_args *client_args) {
+  return grpc_insecure_channel_create(target, client_args, NULL);
 }
 
 static const grpc_end2end_proxy_def proxy_def = {create_proxy_server,
@@ -74,7 +76,7 @@
   fullstack_fixture_data *ffd = gpr_malloc(sizeof(fullstack_fixture_data));
   memset(&f, 0, sizeof(f));
 
-  ffd->proxy = grpc_end2end_proxy_create(&proxy_def);
+  ffd->proxy = grpc_end2end_proxy_create(&proxy_def, client_args, server_args);
 
   f.fixture_data = ffd;
   f.cq = grpc_completion_queue_create(NULL);
diff --git a/test/core/end2end/fixtures/h2_ssl_cert.c b/test/core/end2end/fixtures/h2_ssl_cert.c
index cd031ca..f4dea2c 100644
--- a/test/core/end2end/fixtures/h2_ssl_cert.c
+++ b/test/core/end2end/fixtures/h2_ssl_cert.c
@@ -143,11 +143,11 @@
     chttp2_init_server_secure_fullstack(f, server_args, ssl_creds);         \
   }
 
-SERVER_INIT(GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE);
-SERVER_INIT(GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY);
-SERVER_INIT(GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY);
-SERVER_INIT(GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY);
-SERVER_INIT(GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY);
+SERVER_INIT(GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE)
+SERVER_INIT(GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY)
+SERVER_INIT(GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY)
+SERVER_INIT(GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY)
+SERVER_INIT(GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY)
 
 #define CLIENT_INIT_NAME(cert_type) \
   chttp2_init_client_simple_ssl_secure_fullstack_##cert_type
@@ -189,10 +189,10 @@
     grpc_channel_args_destroy(new_client_args);                              \
   }
 
-CLIENT_INIT(NONE);
-CLIENT_INIT(SELF_SIGNED);
-CLIENT_INIT(SIGNED);
-CLIENT_INIT(BAD_CERT_PAIR);
+CLIENT_INIT(NONE)
+CLIENT_INIT(SELF_SIGNED)
+CLIENT_INIT(SIGNED)
+CLIENT_INIT(BAD_CERT_PAIR)
 
 #define TEST_NAME(enum_name, cert_type, result) \
   "chttp2/ssl_" #enum_name "_" #cert_type "_" #result "_"
diff --git a/test/core/end2end/fixtures/h2_ssl_proxy.c b/test/core/end2end/fixtures/h2_ssl_proxy.c
index 1403b76..151a86c 100644
--- a/test/core/end2end/fixtures/h2_ssl_proxy.c
+++ b/test/core/end2end/fixtures/h2_ssl_proxy.c
@@ -54,8 +54,9 @@
   grpc_end2end_proxy *proxy;
 } fullstack_secure_fixture_data;
 
-static grpc_server *create_proxy_server(const char *port) {
-  grpc_server *s = grpc_server_create(NULL, NULL);
+static grpc_server *create_proxy_server(const char *port,
+                                        grpc_channel_args *server_args) {
+  grpc_server *s = grpc_server_create(server_args, NULL);
   grpc_ssl_pem_key_cert_pair pem_cert_key_pair = {test_server1_key,
                                                   test_server1_cert};
   grpc_server_credentials *ssl_creds =
@@ -65,18 +66,20 @@
   return s;
 }
 
-static grpc_channel *create_proxy_client(const char *target) {
+static grpc_channel *create_proxy_client(const char *target,
+                                         grpc_channel_args *client_args) {
   grpc_channel *channel;
   grpc_channel_credentials *ssl_creds =
       grpc_ssl_credentials_create(NULL, NULL, NULL);
   grpc_arg ssl_name_override = {GRPC_ARG_STRING,
                                 GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,
                                 {"foo.test.google.fr"}};
-  grpc_channel_args client_args;
-  client_args.num_args = 1;
-  client_args.args = &ssl_name_override;
-  channel = grpc_secure_channel_create(ssl_creds, target, &client_args, NULL);
+  grpc_channel_args *new_client_args =
+      grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);
+  channel =
+      grpc_secure_channel_create(ssl_creds, target, new_client_args, NULL);
   grpc_channel_credentials_release(ssl_creds);
+  grpc_channel_args_destroy(new_client_args);
   return channel;
 }
 
@@ -90,7 +93,7 @@
       gpr_malloc(sizeof(fullstack_secure_fixture_data));
   memset(&f, 0, sizeof(f));
 
-  ffd->proxy = grpc_end2end_proxy_create(&proxy_def);
+  ffd->proxy = grpc_end2end_proxy_create(&proxy_def, client_args, server_args);
 
   f.fixture_data = ffd;
   f.cq = grpc_completion_queue_create(NULL);
diff --git a/test/core/end2end/fixtures/proxy.c b/test/core/end2end/fixtures/proxy.c
index a6487a1..f6e01ec 100644
--- a/test/core/end2end/fixtures/proxy.c
+++ b/test/core/end2end/fixtures/proxy.c
@@ -89,8 +89,9 @@
 static void thread_main(void *arg);
 static void request_call(grpc_end2end_proxy *proxy);
 
-grpc_end2end_proxy *grpc_end2end_proxy_create(
-    const grpc_end2end_proxy_def *def) {
+grpc_end2end_proxy *grpc_end2end_proxy_create(const grpc_end2end_proxy_def *def,
+                                              grpc_channel_args *client_args,
+                                              grpc_channel_args *server_args) {
   gpr_thd_options opt = gpr_thd_options_default();
   int proxy_port = grpc_pick_unused_port_or_die();
   int server_port = grpc_pick_unused_port_or_die();
@@ -105,8 +106,8 @@
           proxy->server_port);
 
   proxy->cq = grpc_completion_queue_create(NULL);
-  proxy->server = def->create_server(proxy->proxy_port);
-  proxy->client = def->create_client(proxy->server_port);
+  proxy->server = def->create_server(proxy->proxy_port, server_args);
+  proxy->client = def->create_client(proxy->server_port, client_args);
 
   grpc_server_register_completion_queue(proxy->server, proxy->cq, NULL);
   grpc_server_start(proxy->server);
diff --git a/test/core/end2end/fixtures/proxy.h b/test/core/end2end/fixtures/proxy.h
index c1cf01d..75b75d1 100644
--- a/test/core/end2end/fixtures/proxy.h
+++ b/test/core/end2end/fixtures/proxy.h
@@ -41,12 +41,15 @@
 typedef struct grpc_end2end_proxy grpc_end2end_proxy;
 
 typedef struct grpc_end2end_proxy_def {
-  grpc_server *(*create_server)(const char *port);
-  grpc_channel *(*create_client)(const char *target);
+  grpc_server *(*create_server)(const char *port,
+                                grpc_channel_args *server_args);
+  grpc_channel *(*create_client)(const char *target,
+                                 grpc_channel_args *client_args);
 } grpc_end2end_proxy_def;
 
-grpc_end2end_proxy *grpc_end2end_proxy_create(
-    const grpc_end2end_proxy_def *def);
+grpc_end2end_proxy *grpc_end2end_proxy_create(const grpc_end2end_proxy_def *def,
+                                              grpc_channel_args *client_args,
+                                              grpc_channel_args *server_args);
 void grpc_end2end_proxy_destroy(grpc_end2end_proxy *proxy);
 
 const char *grpc_end2end_proxy_get_client_target(grpc_end2end_proxy *proxy);
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index cffe599..3e10ad5 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -39,9 +39,9 @@
 
 FixtureOptions = collections.namedtuple(
     'FixtureOptions',
-    'fullstack includes_proxy dns_resolver secure platforms ci_mac tracing')
+    'fullstack includes_proxy dns_resolver secure platforms ci_mac tracing exclude_configs')
 default_unsecure_fixture_options = FixtureOptions(
-    True, False, True, False, ['windows', 'linux', 'mac', 'posix'], True, False)
+    True, False, True, False, ['windows', 'linux', 'mac', 'posix'], True, False, [])
 socketpair_unsecure_fixture_options = default_unsecure_fixture_options._replace(fullstack=False, dns_resolver=False)
 default_secure_fixture_options = default_unsecure_fixture_options._replace(secure=True)
 uds_fixture_options = default_unsecure_fixture_options._replace(dns_resolver=False, platforms=['linux', 'mac', 'posix'])
@@ -60,7 +60,7 @@
     'h2_proxy': default_unsecure_fixture_options._replace(includes_proxy=True,
                                                           ci_mac=False),
     'h2_sockpair_1byte': socketpair_unsecure_fixture_options._replace(
-        ci_mac=False),
+        ci_mac=False, exclude_configs=['msan']),
     'h2_sockpair': socketpair_unsecure_fixture_options._replace(ci_mac=False),
     'h2_sockpair+trace': socketpair_unsecure_fixture_options._replace(
         ci_mac=False, tracing=True),
@@ -246,7 +246,7 @@
           {
               'name': '%s_nosec_test' % f,
               'args': [t],
-              'exclude_configs': [],
+              'exclude_configs': END2END_FIXTURES[f].exclude_configs,
               'platforms': END2END_FIXTURES[f].platforms,
               'ci_platforms': (END2END_FIXTURES[f].platforms
                                if END2END_FIXTURES[f].ci_mac else without(
diff --git a/test/core/end2end/tests/large_metadata.c b/test/core/end2end/tests/large_metadata.c
index 0e5d6b4..ae1f68a 100644
--- a/test/core/end2end/tests/large_metadata.c
+++ b/test/core/end2end/tests/large_metadata.c
@@ -97,7 +97,7 @@
   grpc_completion_queue_destroy(f->cq);
 }
 
-/* Request with a large amount of metadata.*/
+// Request with a large amount of metadata.
 static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   grpc_call *c;
   grpc_call *s;
@@ -106,8 +106,13 @@
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
   grpc_metadata meta;
+  const size_t large_size = 64 * 1024;
+  grpc_arg arg = {GRPC_ARG_INTEGER,
+                  GRPC_ARG_MAX_METADATA_SIZE,
+                  {.integer = (int)large_size + 1024}};
+  grpc_channel_args args = {1, &arg};
   grpc_end2end_test_fixture f =
-      begin_test(config, "test_request_with_large_metadata", NULL, NULL);
+      begin_test(config, "test_request_with_large_metadata", &args, &args);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
@@ -121,7 +126,6 @@
   char *details = NULL;
   size_t details_capacity = 0;
   int was_cancelled = 2;
-  const size_t large_size = 64 * 1024;
 
   c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
                                "/foo", "foo.test.google.fr", deadline, NULL);
@@ -138,6 +142,7 @@
   grpc_metadata_array_init(&request_metadata_recv);
   grpc_call_details_init(&call_details);
 
+  // Client: send request.
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 1;
@@ -174,9 +179,11 @@
       grpc_server_request_call(f.server, &s, &call_details,
                                &request_metadata_recv, f.cq, f.cq, tag(101));
   GPR_ASSERT(GRPC_CALL_OK == error);
+
   cq_expect_completion(cqv, tag(101), 1);
   cq_verify(cqv);
 
+  // Server: send initial metadata and receive request.
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
@@ -194,6 +201,8 @@
   cq_expect_completion(cqv, tag(102), 1);
   cq_verify(cqv);
 
+  // Server: receive close and send status.  This should trigger
+  // completion of request on client.
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   op->data.recv_close_on_server.cancelled = &was_cancelled;
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index b5dbc13..4f57278 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -53,7 +53,10 @@
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
-  f = config.create_fixture(client_args, server_args);
+  // We intentionally do not pass the client and server args to
+  // create_fixture(), since we don't want the limit enforced on the
+  // proxy, only on the backend server.
+  f = config.create_fixture(NULL, NULL);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
   return f;
diff --git a/test/core/surface/public_headers_must_be_c89.c b/test/core/surface/public_headers_must_be_c89.c
index fd6ff2c..3eeb55d 100644
--- a/test/core/surface/public_headers_must_be_c89.c
+++ b/test/core/surface/public_headers_must_be_c89.c
@@ -36,7 +36,6 @@
 #include <grpc/census.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
-#include <grpc/grpc_cronet.h>
 #include <grpc/grpc_security.h>
 #include <grpc/grpc_security_constants.h>
 #include <grpc/impl/codegen/alloc.h>
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 0c9313f..e3408bf 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -975,6 +975,34 @@
   EXPECT_EQ("", s.error_message());
 }
 
+// Ask the server to send back a serialized proto in trailer.
+// This is an example of setting error details.
+TEST_P(End2endTest, BinaryTrailerTest) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+
+  request.mutable_param()->set_echo_metadata(true);
+  DebugInfo* info = request.mutable_param()->mutable_debug_info();
+  info->add_stack_entries("stack_entry_1");
+  info->add_stack_entries("stack_entry_2");
+  info->add_stack_entries("stack_entry_3");
+  info->set_detail("detailed debug info");
+  grpc::string expected_string = info->SerializeAsString();
+  request.set_message("Hello");
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_FALSE(s.ok());
+  auto trailers = context.GetServerTrailingMetadata();
+  EXPECT_EQ(1u, trailers.count(kDebugInfoTrailerKey));
+  auto iter = trailers.find(kDebugInfoTrailerKey);
+  EXPECT_EQ(expected_string, iter->second);
+  // Parse the returned trailer into a DebugInfo proto.
+  DebugInfo returned_info;
+  EXPECT_TRUE(returned_info.ParseFromString(ToString(iter->second)));
+}
+
 //////////////////////////////////////////////////////////////////////////
 // Test with and without a proxy.
 class ProxyEnd2endTest : public End2endTest {
diff --git a/test/cpp/end2end/test_service_impl.cc b/test/cpp/end2end/test_service_impl.cc
index 2f5dd6d..cbaee92 100644
--- a/test/cpp/end2end/test_service_impl.cc
+++ b/test/cpp/end2end/test_service_impl.cc
@@ -135,6 +135,14 @@
       context->AddTrailingMetadata(ToString(iter->first),
                                    ToString(iter->second));
     }
+    // Terminate rpc with error and debug info in trailer.
+    if (request->param().debug_info().stack_entries_size() ||
+        !request->param().debug_info().detail().empty()) {
+      grpc::string serialized_debug_info =
+          request->param().debug_info().SerializeAsString();
+      context->AddTrailingMetadata(kDebugInfoTrailerKey, serialized_debug_info);
+      return Status::CANCELLED;
+    }
   }
   if (request->has_param() &&
       (request->param().expected_client_identity().length() > 0 ||
diff --git a/test/cpp/end2end/test_service_impl.h b/test/cpp/end2end/test_service_impl.h
index 1ab6ced..c89f88c 100644
--- a/test/cpp/end2end/test_service_impl.h
+++ b/test/cpp/end2end/test_service_impl.h
@@ -47,6 +47,7 @@
 const int kNumResponseStreamsMsgs = 3;
 const char* const kServerCancelAfterReads = "cancel_after_reads";
 const char* const kServerTryCancelRequest = "server_try_cancel";
+const char* const kDebugInfoTrailerKey = "debug-info-bin";
 
 typedef enum {
   DO_NOT_CANCEL = 0,
diff --git a/test/cpp/grpclb/grpclb_api_test.cc b/test/cpp/grpclb/grpclb_api_test.cc
index 92f93c8..bf77878 100644
--- a/test/cpp/grpclb/grpclb_api_test.cc
+++ b/test/cpp/grpclb/grpclb_api_test.cc
@@ -35,13 +35,13 @@
 #include <string>
 
 #include "src/core/ext/lb_policy/grpclb/load_balancer_api.h"
-#include "src/proto/grpc/lb/v0/load_balancer.pb.h"  // C++ version
+#include "src/proto/grpc/lb/v1/load_balancer.pb.h"  // C++ version
 
 namespace grpc {
 namespace {
 
-using grpc::lb::v0::LoadBalanceRequest;
-using grpc::lb::v0::LoadBalanceResponse;
+using grpc::lb::v1::LoadBalanceRequest;
+using grpc::lb::v1::LoadBalanceResponse;
 
 class GrpclbTest : public ::testing::Test {};
 
@@ -60,9 +60,7 @@
 
 TEST_F(GrpclbTest, ParseResponse) {
   LoadBalanceResponse response;
-  const std::string client_config_str = "I'm a client config";
   auto* initial_response = response.mutable_initial_response();
-  initial_response->set_client_config(client_config_str);
   auto* client_stats_report_interval =
       initial_response->mutable_client_stats_report_interval();
   client_stats_report_interval->set_seconds(123);
@@ -73,10 +71,7 @@
       gpr_slice_from_copied_string(encoded_response.c_str());
   grpc_grpclb_response* c_response = grpc_grpclb_response_parse(encoded_slice);
   EXPECT_TRUE(c_response->has_initial_response);
-  EXPECT_TRUE(c_response->initial_response.has_client_config);
   EXPECT_FALSE(c_response->initial_response.has_load_balancer_delegate);
-  EXPECT_TRUE(strcmp(c_response->initial_response.client_config,
-                     client_config_str.c_str()) == 0);
   EXPECT_EQ(c_response->initial_response.client_stats_report_interval.seconds,
             123);
   EXPECT_EQ(c_response->initial_response.client_stats_report_interval.nanos,
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 9af6a88..7727824 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -81,6 +81,14 @@
 DEFINE_string(service_account_key_file, "",
               "Path to service account json key file.");
 DEFINE_string(oauth_scope, "", "Scope for OAuth tokens.");
+DEFINE_bool(do_not_abort_on_transient_failures, false,
+            "If set to 'true', abort() is not called in case of transient "
+            "failures (i.e failures that are temporary and will likely go away "
+            "on retrying; like a temporary connection failure) and an error "
+            "message is printed instead. Note that this flag just controls "
+            "whether abort() is called or not. It does not control whether the "
+            "test is retried in case of transient failures (and currently the "
+            "interop tests are not retried even if this flag is set to true)");
 
 using grpc::testing::CreateChannelForTestCase;
 using grpc::testing::GetServiceAccountJsonKey;
@@ -89,8 +97,9 @@
   grpc::testing::InitTest(&argc, &argv, true);
   gpr_log(GPR_INFO, "Testing these cases: %s", FLAGS_test_case.c_str());
   int ret = 0;
-  grpc::testing::InteropClient client(
-      CreateChannelForTestCase(FLAGS_test_case));
+  grpc::testing::InteropClient client(CreateChannelForTestCase(FLAGS_test_case),
+                                      true,
+                                      FLAGS_do_not_abort_on_transient_failures);
   if (FLAGS_test_case == "empty_unary") {
     client.DoEmpty();
   } else if (FLAGS_test_case == "large_unary") {
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index 22293d2..e9d95dc 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -134,23 +134,43 @@
   serviceStub_.Reset(channel);
 }
 
-InteropClient::InteropClient(std::shared_ptr<Channel> channel)
-    : serviceStub_(channel, true) {}
-
 InteropClient::InteropClient(std::shared_ptr<Channel> channel,
-                             bool new_stub_every_test_case)
-    : serviceStub_(channel, new_stub_every_test_case) {}
+                             bool new_stub_every_test_case,
+                             bool do_not_abort_on_transient_failures)
+    : serviceStub_(channel, new_stub_every_test_case),
+      do_not_abort_on_transient_failures_(do_not_abort_on_transient_failures) {}
 
-void InteropClient::AssertOkOrPrintErrorStatus(const Status& s) {
+bool InteropClient::AssertStatusOk(const Status& s) {
   if (s.ok()) {
-    return;
+    return true;
   }
-  gpr_log(GPR_ERROR, "Error status code: %d, message: %s", s.error_code(),
-          s.error_message().c_str());
-  GPR_ASSERT(0);
+
+  // Note: At this point, s.error_code is definitely not StatusCode::OK (we
+  // already checked for s.ok() above). So, the following will call abort()
+  // (unless s.error_code() corresponds to a transient failure and
+  // 'do_not_abort_on_transient_failures' is true)
+  return AssertStatusCode(s, StatusCode::OK);
 }
 
-void InteropClient::DoEmpty() {
+bool InteropClient::AssertStatusCode(const Status& s,
+                                     StatusCode expected_code) {
+  if (s.error_code() == expected_code) {
+    return true;
+  }
+
+  gpr_log(GPR_ERROR, "Error status code: %d (expected: %d), message: %s",
+          s.error_code(), expected_code, s.error_message().c_str());
+
+  // In case of transient transient/retryable failures (like a broken
+  // connection) we may or may not abort (see TransientFailureOrAbort())
+  if (s.error_code() == grpc::StatusCode::UNAVAILABLE) {
+    return TransientFailureOrAbort();
+  }
+
+  abort();
+}
+
+bool InteropClient::DoEmpty() {
   gpr_log(GPR_DEBUG, "Sending an empty rpc...");
 
   Empty request = Empty::default_instance();
@@ -158,17 +178,21 @@
   ClientContext context;
 
   Status s = serviceStub_.Get()->EmptyCall(&context, request, &response);
-  AssertOkOrPrintErrorStatus(s);
+
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
 
   gpr_log(GPR_DEBUG, "Empty rpc done.");
+  return true;
 }
 
-void InteropClient::PerformLargeUnary(SimpleRequest* request,
+bool InteropClient::PerformLargeUnary(SimpleRequest* request,
                                       SimpleResponse* response) {
-  PerformLargeUnary(request, response, NoopChecks);
+  return PerformLargeUnary(request, response, NoopChecks);
 }
 
-void InteropClient::PerformLargeUnary(SimpleRequest* request,
+bool InteropClient::PerformLargeUnary(SimpleRequest* request,
                                       SimpleResponse* response,
                                       CheckerFn custom_checks_fn) {
   ClientContext context;
@@ -180,7 +204,9 @@
   request->mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
 
   Status s = serviceStub_.Get()->UnaryCall(&context, *request, response);
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
 
   custom_checks_fn(inspector, request, response);
 
@@ -203,9 +229,11 @@
     default:
       GPR_ASSERT(false);
   }
+
+  return true;
 }
 
-void InteropClient::DoComputeEngineCreds(
+bool InteropClient::DoComputeEngineCreds(
     const grpc::string& default_service_account,
     const grpc::string& oauth_scope) {
   gpr_log(GPR_DEBUG,
@@ -215,7 +243,11 @@
   request.set_fill_username(true);
   request.set_fill_oauth_scope(true);
   request.set_response_type(PayloadType::COMPRESSABLE);
-  PerformLargeUnary(&request, &response);
+
+  if (!PerformLargeUnary(&request, &response)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Got username %s", response.username().c_str());
   gpr_log(GPR_DEBUG, "Got oauth_scope %s", response.oauth_scope().c_str());
   GPR_ASSERT(!response.username().empty());
@@ -224,9 +256,10 @@
   const char* oauth_scope_str = response.oauth_scope().c_str();
   GPR_ASSERT(oauth_scope.find(oauth_scope_str) != grpc::string::npos);
   gpr_log(GPR_DEBUG, "Large unary with compute engine creds done.");
+  return true;
 }
 
-void InteropClient::DoOauth2AuthToken(const grpc::string& username,
+bool InteropClient::DoOauth2AuthToken(const grpc::string& username,
                                       const grpc::string& oauth_scope) {
   gpr_log(GPR_DEBUG,
           "Sending a unary rpc with raw oauth2 access token credentials ...");
@@ -239,16 +272,20 @@
 
   Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
 
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   GPR_ASSERT(!response.username().empty());
   GPR_ASSERT(!response.oauth_scope().empty());
   GPR_ASSERT(username == response.username());
   const char* oauth_scope_str = response.oauth_scope().c_str();
   GPR_ASSERT(oauth_scope.find(oauth_scope_str) != grpc::string::npos);
   gpr_log(GPR_DEBUG, "Unary with oauth2 access token credentials done.");
+  return true;
 }
 
-void InteropClient::DoPerRpcCreds(const grpc::string& json_key) {
+bool InteropClient::DoPerRpcCreds(const grpc::string& json_key) {
   gpr_log(GPR_DEBUG, "Sending a unary rpc with per-rpc JWT access token ...");
   SimpleRequest request;
   SimpleResponse response;
@@ -263,35 +300,47 @@
 
   Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
 
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   GPR_ASSERT(!response.username().empty());
   GPR_ASSERT(json_key.find(response.username()) != grpc::string::npos);
   gpr_log(GPR_DEBUG, "Unary with per-rpc JWT access token done.");
+  return true;
 }
 
-void InteropClient::DoJwtTokenCreds(const grpc::string& username) {
+bool InteropClient::DoJwtTokenCreds(const grpc::string& username) {
   gpr_log(GPR_DEBUG,
           "Sending a large unary rpc with JWT token credentials ...");
   SimpleRequest request;
   SimpleResponse response;
   request.set_fill_username(true);
   request.set_response_type(PayloadType::COMPRESSABLE);
-  PerformLargeUnary(&request, &response);
+
+  if (!PerformLargeUnary(&request, &response)) {
+    return false;
+  }
+
   GPR_ASSERT(!response.username().empty());
   GPR_ASSERT(username.find(response.username()) != grpc::string::npos);
   gpr_log(GPR_DEBUG, "Large unary with JWT token creds done.");
+  return true;
 }
 
-void InteropClient::DoLargeUnary() {
+bool InteropClient::DoLargeUnary() {
   gpr_log(GPR_DEBUG, "Sending a large unary rpc...");
   SimpleRequest request;
   SimpleResponse response;
   request.set_response_type(PayloadType::COMPRESSABLE);
-  PerformLargeUnary(&request, &response);
+  if (!PerformLargeUnary(&request, &response)) {
+    return false;
+  }
   gpr_log(GPR_DEBUG, "Large unary done.");
+  return true;
 }
 
-void InteropClient::DoLargeCompressedUnary() {
+bool InteropClient::DoLargeCompressedUnary() {
   const CompressionType compression_types[] = {NONE, GZIP, DEFLATE};
   const PayloadType payload_types[] = {COMPRESSABLE, UNCOMPRESSABLE, RANDOM};
   for (size_t i = 0; i < GPR_ARRAY_SIZE(payload_types); i++) {
@@ -307,14 +356,32 @@
       SimpleResponse response;
       request.set_response_type(payload_types[i]);
       request.set_response_compression(compression_types[j]);
-      PerformLargeUnary(&request, &response, CompressionChecks);
+
+      if (!PerformLargeUnary(&request, &response, CompressionChecks)) {
+        gpr_log(GPR_ERROR, "Large compressed unary failed %s", log_suffix);
+        gpr_free(log_suffix);
+        return false;
+      }
+
       gpr_log(GPR_DEBUG, "Large compressed unary done %s.", log_suffix);
       gpr_free(log_suffix);
     }
   }
+
+  return true;
 }
 
-void InteropClient::DoRequestStreaming() {
+// Either abort() (unless do_not_abort_on_transient_failures_ is true) or return
+// false
+bool InteropClient::TransientFailureOrAbort() {
+  if (do_not_abort_on_transient_failures_) {
+    return false;
+  }
+
+  abort();
+}
+
+bool InteropClient::DoRequestStreaming() {
   gpr_log(GPR_DEBUG, "Sending request steaming rpc ...");
 
   ClientContext context;
@@ -328,18 +395,24 @@
   for (unsigned int i = 0; i < request_stream_sizes.size(); ++i) {
     Payload* payload = request.mutable_payload();
     payload->set_body(grpc::string(request_stream_sizes[i], '\0'));
-    GPR_ASSERT(stream->Write(request));
+    if (!stream->Write(request)) {
+      gpr_log(GPR_ERROR, "DoRequestStreaming(): stream->Write() failed");
+      return TransientFailureOrAbort();
+    }
     aggregated_payload_size += request_stream_sizes[i];
   }
   stream->WritesDone();
+
   Status s = stream->Finish();
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
 
   GPR_ASSERT(response.aggregated_payload_size() == aggregated_payload_size);
-  AssertOkOrPrintErrorStatus(s);
-  gpr_log(GPR_DEBUG, "Request streaming done.");
+  return true;
 }
 
-void InteropClient::DoResponseStreaming() {
+bool InteropClient::DoResponseStreaming() {
   gpr_log(GPR_DEBUG, "Receiving response steaming rpc ...");
 
   ClientContext context;
@@ -358,13 +431,27 @@
                grpc::string(response_stream_sizes[i], '\0'));
     ++i;
   }
-  GPR_ASSERT(response_stream_sizes.size() == i);
+
+  if (i < response_stream_sizes.size()) {
+    // stream->Read() failed before reading all the expected messages. This is
+    // most likely due to connection failure.
+    gpr_log(GPR_ERROR,
+            "DoResponseStreaming(): Read fewer streams (%d) than "
+            "response_stream_sizes.size() (%d)",
+            i, response_stream_sizes.size());
+    return TransientFailureOrAbort();
+  }
+
   Status s = stream->Finish();
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Response streaming done.");
+  return true;
 }
 
-void InteropClient::DoResponseCompressedStreaming() {
+bool InteropClient::DoResponseCompressedStreaming() {
   const CompressionType compression_types[] = {NONE, GZIP, DEFLATE};
   const PayloadType payload_types[] = {COMPRESSABLE, UNCOMPRESSABLE, RANDOM};
   for (size_t i = 0; i < GPR_ARRAY_SIZE(payload_types); i++) {
@@ -432,17 +519,31 @@
         ++k;
       }
 
-      GPR_ASSERT(response_stream_sizes.size() == k);
-      Status s = stream->Finish();
-
-      AssertOkOrPrintErrorStatus(s);
       gpr_log(GPR_DEBUG, "Response streaming done %s.", log_suffix);
       gpr_free(log_suffix);
+
+      if (k < response_stream_sizes.size()) {
+        // stream->Read() failed before reading all the expected messages. This
+        // is most likely due to a connection failure.
+        gpr_log(GPR_ERROR,
+                "DoResponseCompressedStreaming(): Responses read (k=%d) is "
+                "less than the expected messages (i.e "
+                "response_stream_sizes.size() (%d)). (i=%d, j=%d)",
+                k, response_stream_sizes.size(), i, j);
+        return TransientFailureOrAbort();
+      }
+
+      Status s = stream->Finish();
+      if (!AssertStatusOk(s)) {
+        return false;
+      }
     }
   }
+
+  return true;
 }
 
-void InteropClient::DoResponseStreamingWithSlowConsumer() {
+bool InteropClient::DoResponseStreamingWithSlowConsumer() {
   gpr_log(GPR_DEBUG, "Receiving response steaming rpc with slow consumer ...");
 
   ClientContext context;
@@ -464,14 +565,26 @@
     usleep(kReceiveDelayMilliSeconds * 1000);
     ++i;
   }
-  GPR_ASSERT(kNumResponseMessages == i);
-  Status s = stream->Finish();
 
-  AssertOkOrPrintErrorStatus(s);
+  if (i < kNumResponseMessages) {
+    gpr_log(GPR_ERROR,
+            "DoResponseStreamingWithSlowConsumer(): Responses read (i=%d) is "
+            "less than the expected messages (i.e kNumResponseMessages = %d)",
+            i, kNumResponseMessages);
+
+    return TransientFailureOrAbort();
+  }
+
+  Status s = stream->Finish();
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Response streaming done.");
+  return true;
 }
 
-void InteropClient::DoHalfDuplex() {
+bool InteropClient::DoHalfDuplex() {
   gpr_log(GPR_DEBUG, "Sending half-duplex streaming rpc ...");
 
   ClientContext context;
@@ -483,7 +596,11 @@
   ResponseParameters* response_parameter = request.add_response_parameters();
   for (unsigned int i = 0; i < response_stream_sizes.size(); ++i) {
     response_parameter->set_size(response_stream_sizes[i]);
-    GPR_ASSERT(stream->Write(request));
+
+    if (!stream->Write(request)) {
+      gpr_log(GPR_ERROR, "DoHalfDuplex(): stream->Write() failed. i=%d", i);
+      return TransientFailureOrAbort();
+    }
   }
   stream->WritesDone();
 
@@ -494,13 +611,27 @@
                grpc::string(response_stream_sizes[i], '\0'));
     ++i;
   }
-  GPR_ASSERT(response_stream_sizes.size() == i);
+
+  if (i < response_stream_sizes.size()) {
+    // stream->Read() failed before reading all the expected messages. This is
+    // most likely due to a connection failure
+    gpr_log(GPR_ERROR,
+            "DoHalfDuplex(): Responses read (i=%d) are less than the expected "
+            "number of messages response_stream_sizes.size() (%d)",
+            i, response_stream_sizes.size());
+    return TransientFailureOrAbort();
+  }
+
   Status s = stream->Finish();
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Half-duplex streaming rpc done.");
+  return true;
 }
 
-void InteropClient::DoPingPong() {
+bool InteropClient::DoPingPong() {
   gpr_log(GPR_DEBUG, "Sending Ping Pong streaming rpc ...");
 
   ClientContext context;
@@ -513,23 +644,39 @@
   ResponseParameters* response_parameter = request.add_response_parameters();
   Payload* payload = request.mutable_payload();
   StreamingOutputCallResponse response;
+
   for (unsigned int i = 0; i < request_stream_sizes.size(); ++i) {
     response_parameter->set_size(response_stream_sizes[i]);
     payload->set_body(grpc::string(request_stream_sizes[i], '\0'));
-    GPR_ASSERT(stream->Write(request));
-    GPR_ASSERT(stream->Read(&response));
+
+    if (!stream->Write(request)) {
+      gpr_log(GPR_ERROR, "DoPingPong(): stream->Write() failed. i: %d", i);
+      return TransientFailureOrAbort();
+    }
+
+    if (!stream->Read(&response)) {
+      gpr_log(GPR_ERROR, "DoPingPong(): stream->Read() failed. i:%d", i);
+      return TransientFailureOrAbort();
+    }
+
     GPR_ASSERT(response.payload().body() ==
                grpc::string(response_stream_sizes[i], '\0'));
   }
 
   stream->WritesDone();
+
   GPR_ASSERT(!stream->Read(&response));
+
   Status s = stream->Finish();
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Ping pong streaming done.");
+  return true;
 }
 
-void InteropClient::DoCancelAfterBegin() {
+bool InteropClient::DoCancelAfterBegin() {
   gpr_log(GPR_DEBUG, "Sending request steaming rpc ...");
 
   ClientContext context;
@@ -542,11 +689,16 @@
   gpr_log(GPR_DEBUG, "Trying to cancel...");
   context.TryCancel();
   Status s = stream->Finish();
-  GPR_ASSERT(s.error_code() == StatusCode::CANCELLED);
+
+  if (!AssertStatusCode(s, StatusCode::CANCELLED)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Canceling streaming done.");
+  return true;
 }
 
-void InteropClient::DoCancelAfterFirstResponse() {
+bool InteropClient::DoCancelAfterFirstResponse() {
   gpr_log(GPR_DEBUG, "Sending Ping Pong streaming rpc ...");
 
   ClientContext context;
@@ -560,17 +712,27 @@
   response_parameter->set_size(31415);
   request.mutable_payload()->set_body(grpc::string(27182, '\0'));
   StreamingOutputCallResponse response;
-  GPR_ASSERT(stream->Write(request));
-  GPR_ASSERT(stream->Read(&response));
+
+  if (!stream->Write(request)) {
+    gpr_log(GPR_ERROR, "DoCancelAfterFirstResponse(): stream->Write() failed");
+    return TransientFailureOrAbort();
+  }
+
+  if (!stream->Read(&response)) {
+    gpr_log(GPR_ERROR, "DoCancelAfterFirstResponse(): stream->Read failed");
+    return TransientFailureOrAbort();
+  }
   GPR_ASSERT(response.payload().body() == grpc::string(31415, '\0'));
+
   gpr_log(GPR_DEBUG, "Trying to cancel...");
   context.TryCancel();
 
   Status s = stream->Finish();
   gpr_log(GPR_DEBUG, "Canceling pingpong streaming done.");
+  return true;
 }
 
-void InteropClient::DoTimeoutOnSleepingServer() {
+bool InteropClient::DoTimeoutOnSleepingServer() {
   gpr_log(GPR_DEBUG,
           "Sending Ping Pong streaming rpc with a short deadline...");
 
@@ -587,11 +749,15 @@
   stream->Write(request);
 
   Status s = stream->Finish();
-  GPR_ASSERT(s.error_code() == StatusCode::DEADLINE_EXCEEDED);
+  if (!AssertStatusCode(s, StatusCode::DEADLINE_EXCEEDED)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "Pingpong streaming timeout done.");
+  return true;
 }
 
-void InteropClient::DoEmptyStream() {
+bool InteropClient::DoEmptyStream() {
   gpr_log(GPR_DEBUG, "Starting empty_stream.");
 
   ClientContext context;
@@ -601,12 +767,17 @@
   stream->WritesDone();
   StreamingOutputCallResponse response;
   GPR_ASSERT(stream->Read(&response) == false);
+
   Status s = stream->Finish();
-  AssertOkOrPrintErrorStatus(s);
+  if (!AssertStatusOk(s)) {
+    return false;
+  }
+
   gpr_log(GPR_DEBUG, "empty_stream done.");
+  return true;
 }
 
-void InteropClient::DoStatusWithMessage() {
+bool InteropClient::DoStatusWithMessage() {
   gpr_log(GPR_DEBUG,
           "Sending RPC with a request for status code 2 and message");
 
@@ -620,12 +791,16 @@
 
   Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
 
-  GPR_ASSERT(s.error_code() == grpc::StatusCode::UNKNOWN);
+  if (!AssertStatusCode(s, grpc::StatusCode::UNKNOWN)) {
+    return false;
+  }
+
   GPR_ASSERT(s.error_message() == test_msg);
   gpr_log(GPR_DEBUG, "Done testing Status and Message");
+  return true;
 }
 
-void InteropClient::DoCustomMetadata() {
+bool InteropClient::DoCustomMetadata() {
   const grpc::string kEchoInitialMetadataKey("x-grpc-test-echo-initial");
   const grpc::string kInitialMetadataValue("test_initial_metadata_value");
   const grpc::string kEchoTrailingBinMetadataKey(
@@ -645,7 +820,10 @@
     request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
 
     Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
-    AssertOkOrPrintErrorStatus(s);
+    if (!AssertStatusOk(s)) {
+      return false;
+    }
+
     const auto& server_initial_metadata = context.GetServerInitialMetadata();
     auto iter = server_initial_metadata.find(kEchoInitialMetadataKey);
     GPR_ASSERT(iter != server_initial_metadata.end());
@@ -675,14 +853,29 @@
     grpc::string payload(kLargeRequestSize, '\0');
     request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
     StreamingOutputCallResponse response;
-    GPR_ASSERT(stream->Write(request));
+
+    if (!stream->Write(request)) {
+      gpr_log(GPR_ERROR, "DoCustomMetadata(): stream->Write() failed");
+      return TransientFailureOrAbort();
+    }
+
     stream->WritesDone();
-    GPR_ASSERT(stream->Read(&response));
+
+    if (!stream->Read(&response)) {
+      gpr_log(GPR_ERROR, "DoCustomMetadata(): stream->Read() failed");
+      return TransientFailureOrAbort();
+    }
+
     GPR_ASSERT(response.payload().body() ==
                grpc::string(kLargeResponseSize, '\0'));
+
     GPR_ASSERT(!stream->Read(&response));
+
     Status s = stream->Finish();
-    AssertOkOrPrintErrorStatus(s);
+    if (!AssertStatusOk(s)) {
+      return false;
+    }
+
     const auto& server_initial_metadata = context.GetServerInitialMetadata();
     auto iter = server_initial_metadata.find(kEchoInitialMetadataKey);
     GPR_ASSERT(iter != server_initial_metadata.end());
@@ -695,6 +888,8 @@
 
     gpr_log(GPR_DEBUG, "Done testing stream with custom metadata");
   }
+
+  return true;
 }
 
 }  // namespace testing
diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index a3794fd..ae75762 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -51,41 +51,42 @@
 
 class InteropClient {
  public:
-  explicit InteropClient(std::shared_ptr<Channel> channel);
-  explicit InteropClient(
-      std::shared_ptr<Channel> channel,
-      bool new_stub_every_test_case);  // If new_stub_every_test_case is true,
-                                       // a new TestService::Stub object is
-                                       // created for every test case below
+  /// If new_stub_every_test_case is true, a new TestService::Stub object is
+  /// created for every test case
+  /// If do_not_abort_on_transient_failures is true, abort() is not called in
+  /// case of transient failures (like connection failures)
+  explicit InteropClient(std::shared_ptr<Channel> channel,
+                         bool new_stub_every_test_case,
+                         bool do_not_abort_on_transient_failures);
   ~InteropClient() {}
 
   void Reset(std::shared_ptr<Channel> channel);
 
-  void DoEmpty();
-  void DoLargeUnary();
-  void DoLargeCompressedUnary();
-  void DoPingPong();
-  void DoHalfDuplex();
-  void DoRequestStreaming();
-  void DoResponseStreaming();
-  void DoResponseCompressedStreaming();
-  void DoResponseStreamingWithSlowConsumer();
-  void DoCancelAfterBegin();
-  void DoCancelAfterFirstResponse();
-  void DoTimeoutOnSleepingServer();
-  void DoEmptyStream();
-  void DoStatusWithMessage();
-  void DoCustomMetadata();
+  bool DoEmpty();
+  bool DoLargeUnary();
+  bool DoLargeCompressedUnary();
+  bool DoPingPong();
+  bool DoHalfDuplex();
+  bool DoRequestStreaming();
+  bool DoResponseStreaming();
+  bool DoResponseCompressedStreaming();
+  bool DoResponseStreamingWithSlowConsumer();
+  bool DoCancelAfterBegin();
+  bool DoCancelAfterFirstResponse();
+  bool DoTimeoutOnSleepingServer();
+  bool DoEmptyStream();
+  bool DoStatusWithMessage();
+  bool DoCustomMetadata();
   // Auth tests.
   // username is a string containing the user email
-  void DoJwtTokenCreds(const grpc::string& username);
-  void DoComputeEngineCreds(const grpc::string& default_service_account,
+  bool DoJwtTokenCreds(const grpc::string& username);
+  bool DoComputeEngineCreds(const grpc::string& default_service_account,
                             const grpc::string& oauth_scope);
   // username the GCE default service account email
-  void DoOauth2AuthToken(const grpc::string& username,
+  bool DoOauth2AuthToken(const grpc::string& username,
                          const grpc::string& oauth_scope);
   // username is a string containing the user email
-  void DoPerRpcCreds(const grpc::string& json_key);
+  bool DoPerRpcCreds(const grpc::string& json_key);
 
  private:
   class ServiceStub {
@@ -105,13 +106,18 @@
                                 // Get() call
   };
 
-  void PerformLargeUnary(SimpleRequest* request, SimpleResponse* response);
+  bool PerformLargeUnary(SimpleRequest* request, SimpleResponse* response);
 
   /// Run \a custom_check_fn as an additional check.
-  void PerformLargeUnary(SimpleRequest* request, SimpleResponse* response,
+  bool PerformLargeUnary(SimpleRequest* request, SimpleResponse* response,
                          CheckerFn custom_checks_fn);
-  void AssertOkOrPrintErrorStatus(const Status& s);
+  bool AssertStatusOk(const Status& s);
+  bool AssertStatusCode(const Status& s, StatusCode expected_code);
+  bool TransientFailureOrAbort();
   ServiceStub serviceStub_;
+
+  /// If true, abort() is not called for transient failures
+  bool do_not_abort_on_transient_failures_;
 };
 
 }  // namespace testing
diff --git a/test/cpp/interop/stress_interop_client.cc b/test/cpp/interop/stress_interop_client.cc
index f287a5a..aa95682 100644
--- a/test/cpp/interop/stress_interop_client.cc
+++ b/test/cpp/interop/stress_interop_client.cc
@@ -84,11 +84,12 @@
     int test_id, const grpc::string& server_address,
     std::shared_ptr<Channel> channel,
     const WeightedRandomTestSelector& test_selector, long test_duration_secs,
-    long sleep_duration_ms)
+    long sleep_duration_ms, bool do_not_abort_on_transient_failures)
     : test_id_(test_id),
       server_address_(server_address),
       channel_(channel),
-      interop_client_(new InteropClient(channel, false)),
+      interop_client_(new InteropClient(channel, false,
+                                        do_not_abort_on_transient_failures)),
       test_selector_(test_selector),
       test_duration_secs_(test_duration_secs),
       sleep_duration_ms_(sleep_duration_ms) {}
@@ -126,31 +127,67 @@
   }
 }
 
-// TODO(sree): Add all interop tests
-void StressTestInteropClient::RunTest(TestCaseType test_case) {
+bool StressTestInteropClient::RunTest(TestCaseType test_case) {
+  bool is_success = false;
   switch (test_case) {
     case EMPTY_UNARY: {
-      interop_client_->DoEmpty();
+      is_success = interop_client_->DoEmpty();
       break;
     }
     case LARGE_UNARY: {
-      interop_client_->DoLargeUnary();
+      is_success = interop_client_->DoLargeUnary();
       break;
     }
     case LARGE_COMPRESSED_UNARY: {
-      interop_client_->DoLargeCompressedUnary();
+      is_success = interop_client_->DoLargeCompressedUnary();
       break;
     }
     case CLIENT_STREAMING: {
-      interop_client_->DoRequestStreaming();
+      is_success = interop_client_->DoRequestStreaming();
       break;
     }
     case SERVER_STREAMING: {
-      interop_client_->DoResponseStreaming();
+      is_success = interop_client_->DoResponseStreaming();
+      break;
+    }
+    case SERVER_COMPRESSED_STREAMING: {
+      is_success = interop_client_->DoResponseCompressedStreaming();
+      break;
+    }
+    case SLOW_CONSUMER: {
+      is_success = interop_client_->DoResponseStreamingWithSlowConsumer();
+      break;
+    }
+    case HALF_DUPLEX: {
+      is_success = interop_client_->DoHalfDuplex();
+      break;
+    }
+    case PING_PONG: {
+      is_success = interop_client_->DoPingPong();
+      break;
+    }
+    case CANCEL_AFTER_BEGIN: {
+      is_success = interop_client_->DoCancelAfterBegin();
+      break;
+    }
+    case CANCEL_AFTER_FIRST_RESPONSE: {
+      is_success = interop_client_->DoCancelAfterFirstResponse();
+      break;
+    }
+    case TIMEOUT_ON_SLEEPING_SERVER: {
+      is_success = interop_client_->DoTimeoutOnSleepingServer();
       break;
     }
     case EMPTY_STREAM: {
-      interop_client_->DoEmptyStream();
+      is_success = interop_client_->DoEmptyStream();
+      break;
+    }
+    case STATUS_CODE_AND_MESSAGE: {
+      is_success = interop_client_->DoStatusWithMessage();
+      break;
+    }
+    case CUSTOM_METADATA: {
+      is_success = interop_client_->DoCustomMetadata();
       break;
     }
     default: {
@@ -159,6 +196,8 @@
       break;
     }
   }
+
+  return is_success;
 }
 
 }  // namespace testing
diff --git a/test/cpp/interop/stress_interop_client.h b/test/cpp/interop/stress_interop_client.h
index cb0cd98..aa93b58 100644
--- a/test/cpp/interop/stress_interop_client.h
+++ b/test/cpp/interop/stress_interop_client.h
@@ -49,7 +49,6 @@
 using std::pair;
 using std::vector;
 
-// TODO(sreek): Add more test cases here in future
 enum TestCaseType {
   UNKNOWN_TEST = -1,
   EMPTY_UNARY = 0,
@@ -57,7 +56,16 @@
   LARGE_COMPRESSED_UNARY = 2,
   CLIENT_STREAMING = 3,
   SERVER_STREAMING = 4,
-  EMPTY_STREAM = 5
+  SERVER_COMPRESSED_STREAMING = 5,
+  SLOW_CONSUMER = 6,
+  HALF_DUPLEX = 7,
+  PING_PONG = 8,
+  CANCEL_AFTER_BEGIN = 9,
+  CANCEL_AFTER_FIRST_RESPONSE = 10,
+  TIMEOUT_ON_SLEEPING_SERVER = 11,
+  EMPTY_STREAM = 12,
+  STATUS_CODE_AND_MESSAGE = 13,
+  CUSTOM_METADATA = 14
 };
 
 const vector<pair<TestCaseType, grpc::string>> kTestCaseList = {
@@ -66,7 +74,16 @@
     {LARGE_COMPRESSED_UNARY, "large_compressed_unary"},
     {CLIENT_STREAMING, "client_streaming"},
     {SERVER_STREAMING, "server_streaming"},
-    {EMPTY_STREAM, "empty_stream"}};
+    {SERVER_COMPRESSED_STREAMING, "server_compressed_streaming"},
+    {SLOW_CONSUMER, "slow_consumer"},
+    {HALF_DUPLEX, "half_duplex"},
+    {PING_PONG, "ping_pong"},
+    {CANCEL_AFTER_BEGIN, "cancel_after_begin"},
+    {CANCEL_AFTER_FIRST_RESPONSE, "cancel_after_first_response"},
+    {TIMEOUT_ON_SLEEPING_SERVER, "timeout_on_sleeping_server"},
+    {EMPTY_STREAM, "empty_stream"},
+    {STATUS_CODE_AND_MESSAGE, "status_code_and_message"},
+    {CUSTOM_METADATA, "custom_metadata"}};
 
 class WeightedRandomTestSelector {
  public:
@@ -87,14 +104,15 @@
   StressTestInteropClient(int test_id, const grpc::string& server_address,
                           std::shared_ptr<Channel> channel,
                           const WeightedRandomTestSelector& test_selector,
-                          long test_duration_secs, long sleep_duration_ms);
+                          long test_duration_secs, long sleep_duration_ms,
+                          bool do_not_abort_on_transient_failures);
 
   // The main function. Use this as the thread entry point.
   // qps_gauge is the QpsGauge to record the requests per second metric
   void MainLoop(std::shared_ptr<QpsGauge> qps_gauge);
 
  private:
-  void RunTest(TestCaseType test_case);
+  bool RunTest(TestCaseType test_case);
 
   int test_id_;
   const grpc::string& server_address_;
diff --git a/test/cpp/interop/stress_test.cc b/test/cpp/interop/stress_test.cc
index d9e3fd2..7787931 100644
--- a/test/cpp/interop/stress_test.cc
+++ b/test/cpp/interop/stress_test.cc
@@ -89,7 +89,16 @@
               "   large_compressed_unary\n"
               "   client_streaming\n"
               "   server_streaming\n"
+              "   server_compressed_streaming\n"
+              "   slow_consumer\n"
+              "   half_duplex\n"
+              "   ping_pong\n"
+              "   cancel_after_begin\n"
+              "   cancel_after_first_response\n"
+              "   timeout_on_sleeping_server\n"
               "   empty_stream\n"
+              "   status_code_and_message\n"
+              "   custom_metadata\n"
               " Example: \"empty_unary:20,large_unary:10,empty_stream:70\"\n"
               " The above will execute 'empty_unary', 20% of the time,"
               " 'large_unary', 10% of the time and 'empty_stream' the remaining"
@@ -101,6 +110,10 @@
              "The choices are: 0 (GPR_LOG_SEVERITY_DEBUG), 1 "
              "(GPR_LOG_SEVERITY_INFO) and 2 (GPR_LOG_SEVERITY_ERROR)");
 
+DEFINE_bool(do_not_abort_on_transient_failures, true,
+            "If set to 'true', abort() is not called in case of transient "
+            "failures like temporary connection failures.");
+
 using grpc::testing::kTestCaseList;
 using grpc::testing::MetricsService;
 using grpc::testing::MetricsServiceImpl;
@@ -189,6 +202,12 @@
   gpr_log(GPR_INFO, "test_cases : %s", FLAGS_test_cases.c_str());
   gpr_log(GPR_INFO, "sleep_duration_ms: %d", FLAGS_sleep_duration_ms);
   gpr_log(GPR_INFO, "test_duration_secs: %d", FLAGS_test_duration_secs);
+  gpr_log(GPR_INFO, "num_channels_per_server: %d",
+          FLAGS_num_channels_per_server);
+  gpr_log(GPR_INFO, "num_stubs_per_channel: %d", FLAGS_num_stubs_per_channel);
+  gpr_log(GPR_INFO, "log_level: %d", FLAGS_log_level);
+  gpr_log(GPR_INFO, "do_not_abort_on_transient_failures: %s",
+          FLAGS_do_not_abort_on_transient_failures ? "true" : "false");
 
   int num = 0;
   for (auto it = addresses.begin(); it != addresses.end(); it++) {
@@ -272,7 +291,7 @@
            stub_idx++) {
         StressTestInteropClient* client = new StressTestInteropClient(
             ++thread_idx, *it, channel, test_selector, FLAGS_test_duration_secs,
-            FLAGS_sleep_duration_ms);
+            FLAGS_sleep_duration_ms, FLAGS_do_not_abort_on_transient_failures);
 
         bool is_already_created = false;
         // QpsGauge name
diff --git a/test/cpp/qps/client_async.cc b/test/cpp/qps/client_async.cc
index e72cef2..c32160a 100644
--- a/test/cpp/qps/client_async.cc
+++ b/test/cpp/qps/client_async.cc
@@ -84,7 +84,8 @@
       std::function<
           std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>(
               BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
-              CompletionQueue*)> start_req,
+              CompletionQueue*)>
+          start_req,
       std::function<void(grpc::Status, ResponseType*)> on_done)
       : context_(),
         stub_(stub),
@@ -165,7 +166,8 @@
   AsyncClient(const ClientConfig& config,
               std::function<ClientRpcContext*(
                   StubType*, std::function<gpr_timespec()> next_issue,
-                  const RequestType&)> setup_ctx,
+                  const RequestType&)>
+                  setup_ctx,
               std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
                   create_stub)
       : ClientImpl<StubType, RequestType>(config, create_stub),
@@ -278,7 +280,8 @@
       std::function<std::unique_ptr<
           grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
           BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*,
-          void*)> start_req,
+          void*)>
+          start_req,
       std::function<void(grpc::Status, ResponseType*)> on_done)
       : context_(),
         stub_(stub),
@@ -405,7 +408,8 @@
       std::function<gpr_timespec()> next_issue,
       std::function<std::unique_ptr<grpc::GenericClientAsyncReaderWriter>(
           grpc::GenericStub*, grpc::ClientContext*,
-          const grpc::string& method_name, CompletionQueue*, void*)> start_req,
+          const grpc::string& method_name, CompletionQueue*, void*)>
+          start_req,
       std::function<void(grpc::Status, ByteBuffer*)> on_done)
       : context_(),
         stub_(stub),
diff --git a/test/cpp/qps/gen_build_yaml.py b/test/cpp/qps/gen_build_yaml.py
index 9d6bf2a..6b3329b 100755
--- a/test/cpp/qps/gen_build_yaml.py
+++ b/test/cpp/qps/gen_build_yaml.py
@@ -43,12 +43,16 @@
 
 import performance.scenario_config as scenario_config
 
+def _scenario_json_string(scenario_json):
+  return json.dumps(scenario_config.remove_nonproto_fields(scenario_json))
+
 print yaml.dump({
   'tests': [
     {
       'name': 'json_run_localhost',
-      'shortname': 'json_run_localhost:%s' % js['name'],
-      'args': ['--scenario_json', pipes.quote(json.dumps(js))],
+      'shortname': 'json_run_localhost:%s' % scenario_json['name'],
+      'args': ['--scenario_json',
+               pipes.quote(_scenario_json_string(scenario_json))],
       'ci_platforms': ['linux', 'mac', 'posix', 'windows'],
       'platforms': ['linux', 'mac', 'posix', 'windows'],
       'flaky': False,
@@ -58,6 +62,6 @@
       'cpu_cost': 1000.0,
       'exclude_configs': []
     }
-    for js in scenario_config.CXXLanguage().scenarios()
+    for scenario_json in scenario_config.CXXLanguage().scenarios()
   ]
 })
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index a68f1ae..1234542 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -73,7 +73,8 @@
                          CompletionQueue *, ServerCompletionQueue *, void *)>
           request_streaming_function,
       std::function<grpc::Status(const PayloadConfig &, const RequestType *,
-                                 ResponseType *)> process_rpc)
+                                 ResponseType *)>
+          process_rpc)
       : Server(config) {
     char *server_address = NULL;
 
@@ -190,7 +191,8 @@
     ServerRpcContextUnaryImpl(
         std::function<void(ServerContextType *, RequestType *,
                            grpc::ServerAsyncResponseWriter<ResponseType> *,
-                           void *)> request_method,
+                           void *)>
+            request_method,
         std::function<grpc::Status(const RequestType *, ResponseType *)>
             invoke_method)
         : srv_ctx_(new ServerContextType),
diff --git a/test/distrib/python/run_distrib_test.sh b/test/distrib/python/run_distrib_test.sh
index 6196e54..8a983bc 100755
--- a/test/distrib/python/run_distrib_test.sh
+++ b/test/distrib/python/run_distrib_test.sh
@@ -48,7 +48,10 @@
 which $PIP || PIP=pip
 
 # TODO(jtattermusch): this shouldn't be required
-${PIP} install --upgrade six pip
+# TODO(jtattermusch): run the command twice to workaround docker-on-overlay
+# issue https://github.com/docker/docker/issues/12327
+# (first attempt will fail when using docker with overlayFS)
+${PIP} install --upgrade six pip || ${PIP} install --upgrade six pip
 
 # At least one of the bdist packages has to succeed (whichever one matches the
 # test machine, anyway).
@@ -58,6 +61,6 @@
 
 # TODO(jtattermusch): add a .proto file to the distribtest, generate python
 # code from it and then use the generated code from distribtest.py
-$PYTHON -m grpc.protoc.compiler
+$PYTHON -m grpc.tools.protoc
 
 $PYTHON distribtest.py
diff --git a/third_party/objective_c/Cronet/cronet_c_for_grpc.h b/third_party/objective_c/Cronet/cronet_c_for_grpc.h
deleted file mode 100644
index 15a511a..0000000
--- a/third_party/objective_c/Cronet/cronet_c_for_grpc.h
+++ /dev/null
@@ -1,202 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
-#define COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stddef.h>
-
-/* Cronet Engine API. */
-
-/* Opaque object representing Cronet Engine. Created and configured outside
- * of this API to facilitate sharing with other components */
-typedef struct cronet_engine { void* obj; } cronet_engine;
-
-void cronet_engine_add_quic_hint(cronet_engine* engine,
-                                 const char* host,
-                                 int port,
-                                 int alternate_port);
-
-/* Cronet Bidirectional Stream API */
-
-/* Opaque object representing Cronet Bidirectional Stream. */
-typedef struct cronet_bidirectional_stream {
-  void* obj;
-  void* annotation;
-} cronet_bidirectional_stream;
-
-/* A single request or response header element. */
-typedef struct cronet_bidirectional_stream_header {
-  const char* key;
-  const char* value;
-} cronet_bidirectional_stream_header;
-
-/* Array of request or response headers or trailers. */
-typedef struct cronet_bidirectional_stream_header_array {
-  size_t count;
-  size_t capacity;
-  cronet_bidirectional_stream_header* headers;
-} cronet_bidirectional_stream_header_array;
-
-/* Set of callbacks used to receive callbacks from bidirectional stream. */
-typedef struct cronet_bidirectional_stream_callback {
-  /* Invoked when request headers are sent. Indicates that stream has initiated
-   * the request. Consumer may call cronet_bidirectional_stream_write() to start
-   * writing data.
-   */
-  void (*on_request_headers_sent)(cronet_bidirectional_stream* stream);
-
-  /* Invoked when initial response headers are received.
-   * Consumer must call cronet_bidirectional_stream_read() to start reading.
-   * Consumer may call cronet_bidirectional_stream_write() to start writing or
-   * close the stream. Contents of |headers| is valid for duration of the call.
-   */
-  void (*on_response_headers_received)(
-      cronet_bidirectional_stream* stream,
-      const cronet_bidirectional_stream_header_array* headers,
-      const char* negotiated_protocol);
-
-  /* Invoked when data is read into the buffer passed to
-   * cronet_bidirectional_stream_read(). Only part of the buffer may be
-   * populated. To continue reading, call cronet_bidirectional_stream_read().
-   * It may be invoked after on_response_trailers_received()}, if there was
-   * pending read data before trailers were received.
-   *
-   * If count is 0, it means the remote side has signaled that it will send no
-   * more data; future calls to cronet_bidirectional_stream_read() will result
-   * in the on_data_read() callback or on_succeded() callback if
-   * cronet_bidirectional_stream_write() was invoked with end_of_stream set to
-   * true.
-   */
-  void (*on_read_completed)(cronet_bidirectional_stream* stream,
-                            char* data,
-                            int count);
-
-  /**
-   * Invoked when all data passed to cronet_bidirectional_stream_write() is
-   * sent.
-   * To continue writing, call cronet_bidirectional_stream_write().
-   */
-  void (*on_write_completed)(cronet_bidirectional_stream* stream,
-                             const char* data);
-
-  /* Invoked when trailers are received before closing the stream. Only invoked
-   * when server sends trailers, which it may not. May be invoked while there is
-   * read data remaining in local buffer. Contents of |trailers| is valid for
-   * duration of the call.
-   */
-  void (*on_response_trailers_received)(
-      cronet_bidirectional_stream* stream,
-      const cronet_bidirectional_stream_header_array* trailers);
-
-  /**
-   * Invoked when there is no data to be read or written and the stream is
-   * closed successfully remotely and locally. Once invoked, no further callback
-   * methods will be invoked.
-   */
-  void (*on_succeded)(cronet_bidirectional_stream* stream);
-
-  /**
-   * Invoked if the stream failed for any reason after
-   * cronet_bidirectional_stream_start(). HTTP/2 error codes are
-   * mapped to chrome net error codes. Once invoked, no further callback methods
-   * will be invoked.
-   */
-  void (*on_failed)(cronet_bidirectional_stream* stream, int net_error);
-
-  /**
-   * Invoked if the stream was canceled via
-   * cronet_bidirectional_stream_cancel(). Once invoked, no further callback
-   * methods will be invoked.
-   */
-  void (*on_canceled)(cronet_bidirectional_stream* stream);
-} cronet_bidirectional_stream_callback;
-
-/* Create a new stream object that uses |engine| and |callback|. All stream
- * tasks are performed asynchronously on the |engine| network thread. |callback|
- * methods are invoked synchronously on the |engine| network thread, but must
- * not run tasks on the current thread to prevent blocking networking operations
- * and causing exceptions during shutdown. The |annotation| is stored in
- * bidirectional stream for arbitrary use by application.
- *
- * Returned |cronet_bidirectional_stream*| is owned by the caller, and must be
- * destroyed using |cronet_bidirectional_stream_destroy|.
- *
- * Both |calback| and |engine| must remain valid until stream is destroyed.
- */
-cronet_bidirectional_stream* cronet_bidirectional_stream_create(
-    cronet_engine* engine,
-    void* annotation,
-    cronet_bidirectional_stream_callback* callback);
-
-/* TBD: The following methods return int. Should it be a custom type? */
-
-/* Destroy stream object. Destroy could be called from any thread, including
- * network thread, but is posted, so |stream| is valid until calling task is
- * complete.
- */
-int cronet_bidirectional_stream_destroy(cronet_bidirectional_stream* stream);
-
-/* Start the stream by sending request to |url| using |method| and |headers|. If
- * |end_of_stream| is true, then no data is expected to be written.
- */
-int cronet_bidirectional_stream_start(
-    cronet_bidirectional_stream* stream,
-    const char* url,
-    int priority,
-    const char* method,
-    const cronet_bidirectional_stream_header_array* headers,
-    bool end_of_stream);
-
-/* Read response data into |buffer| of |capacity| length. Must only be called at
- * most once in response to each invocation of the
- * on_response_headers_received() and on_read_completed() methods of the
- * cronet_bidirectional_stream_callback.
- * Each call will result in an invocation of one of the callback's
- * on_read_completed  method if data is read, its on_succeeded() method if
- * the stream is closed, or its on_failed() method if there's an error.
- */
-int cronet_bidirectional_stream_read(cronet_bidirectional_stream* stream,
-                                     char* buffer,
-                                     int capacity);
-
-/* Read response data into |buffer| of |capacity| length. Must only be called at
- * most once in response to each invocation of the
- * on_response_headers_received() and on_read_completed() methods of the
- * cronet_bidirectional_stream_callback.
- * Each call will result in an invocation of one of the callback's
- * on_read_completed  method if data is read, its on_succeeded() method if
- * the stream is closed, or its on_failed() method if there's an error.
- */
-int cronet_bidirectional_stream_write(cronet_bidirectional_stream* stream,
-                                      const char* buffer,
-                                      int count,
-                                      bool end_of_stream);
-
-/* Cancels the stream. Can be called at any time after
- * cronet_bidirectional_stream_start(). The on_canceled() method of
- * cronet_bidirectional_stream_callback will be invoked when cancelation
- * is complete and no further callback methods will be invoked. If the
- * stream has completed or has not started, calling
- * cronet_bidirectional_stream_cancel() has no effect and on_canceled() will not
- * be  invoked. At most one callback method may be invoked after
- * cronet_bidirectional_stream_cancel() has completed.
- */
-int cronet_bidirectional_stream_cancel(cronet_bidirectional_stream* stream);
-
-/* Returns true if the |stream| was successfully started and is now done
- * (succeeded, canceled, or failed).
- * Returns false if the |stream| stream is not yet started or is in progress.
- */
-bool cronet_bidirectional_stream_is_done(cronet_bidirectional_stream* stream);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // COMPONENTS_CRONET_IOS_CRONET_C_FOR_GRPC_H_
diff --git a/third_party/protobuf b/third_party/protobuf
index d5fb408..a1938b2 160000
--- a/third_party/protobuf
+++ b/third_party/protobuf
@@ -1 +1 @@
-Subproject commit d5fb408ddc281ffcadeb08699e65bb694656d0bd
+Subproject commit a1938b2aa9ca86ce7ce50c27ff9737c1008d2a03
diff --git a/tools/codegen/core/gen_header_frame.py b/tools/codegen/core/gen_header_frame.py
index 96e6c67..ee47626 100755
--- a/tools/codegen/core/gen_header_frame.py
+++ b/tools/codegen/core/gen_header_frame.py
@@ -38,6 +38,8 @@
 import json
 import sys
 
+set_end_stream = len(sys.argv) > 1 and sys.argv[1] == '--set_end_stream'
+
 # parse input, fill in vals
 vals = []
 for line in sys.stdin:
@@ -65,6 +67,9 @@
   payload_bytes.append(payload_line)
 
 # fill in header
+flags = 0x04  # END_HEADERS
+if set_end_stream:
+  flags |= 0x01  # END_STREAM
 payload_bytes[0].extend([
     (payload_len >> 16) & 0xff,
     (payload_len >> 8) & 0xff,
@@ -72,7 +77,7 @@
     # header frame
     0x01,
     # flags
-    0x04,
+    flags,
     # stream id
     0x00,
     0x00,
diff --git a/tools/codegen/core/gen_nano_proto.sh b/tools/codegen/core/gen_nano_proto.sh
index e2d2f67..b216a20 100755
--- a/tools/codegen/core/gen_nano_proto.sh
+++ b/tools/codegen/core/gen_nano_proto.sh
@@ -29,11 +29,11 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#
 # Example usage:
 #   tools/codegen/core/gen_nano_proto.sh \
-#     src/proto/grpc/lb/v0/load_balancer.proto
-#     $PWD/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0
+#     src/proto/grpc/lb/v1/load_balancer.proto \
+#     $PWD/src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1 \
+#     src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1
 #
 # Exit statuses:
 # 1: Incorrect number of arguments
diff --git a/tools/distrib/check_include_guards.py b/tools/distrib/check_include_guards.py
index 6c160c6..8207f5c 100755
--- a/tools/distrib/check_include_guards.py
+++ b/tools/distrib/check_include_guards.py
@@ -170,7 +170,7 @@
 args = argp.parse_args()
 
 KNOWN_BAD = set([
-    'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h',
+    'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
 ])
 
 
diff --git a/tools/distrib/check_nanopb_output.sh b/tools/distrib/check_nanopb_output.sh
index 92cb8ec..c070705 100755
--- a/tools/distrib/check_nanopb_output.sh
+++ b/tools/distrib/check_nanopb_output.sh
@@ -58,15 +58,15 @@
 #
 # Checks for load_balancer.proto
 #
-readonly LOAD_BALANCER_GRPC_OUTPUT_PATH='src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0'
+readonly LOAD_BALANCER_GRPC_OUTPUT_PATH='src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1'
 # nanopb-compile the proto to a temp location
 ./tools/codegen/core/gen_nano_proto.sh \
-  src/proto/grpc/lb/v0/load_balancer.proto \
+  src/proto/grpc/lb/v1/load_balancer.proto \
   "$NANOPB_TMP_OUTPUT" \
   "$LOAD_BALANCER_GRPC_OUTPUT_PATH"
 
 # compare outputs to checked compiled code
-if ! diff -r $NANOPB_TMP_OUTPUT src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0; then
+if ! diff -r $NANOPB_TMP_OUTPUT src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1; then
   echo "Outputs differ: $NANOPB_TMP_OUTPUT vs $LOAD_BALANCER_GRPC_OUTPUT_PATH"
   exit 2
 fi
diff --git a/tools/distrib/python/grpcio_tools/MANIFEST.in b/tools/distrib/python/grpcio_tools/MANIFEST.in
index e6ab312..7712834 100644
--- a/tools/distrib/python/grpcio_tools/MANIFEST.in
+++ b/tools/distrib/python/grpcio_tools/MANIFEST.in
@@ -1,5 +1,7 @@
+include grpc_version.py
 include protoc_deps.py
 include protoc_lib_deps.py
+include README.rst
 graft grpc
 graft grpc_root
 graft third_party
diff --git a/tools/distrib/python/grpcio_tools/README.rst b/tools/distrib/python/grpcio_tools/README.rst
new file mode 100644
index 0000000..10d2fe8
--- /dev/null
+++ b/tools/distrib/python/grpcio_tools/README.rst
@@ -0,0 +1,128 @@
+gRPC Python Tools
+=================
+
+Package for gRPC Python tools.
+
+Installation
+------------
+
+The gRPC Python tools package is available for Linux, Mac OS X, and Windows
+running Python 2.7.
+
+From PyPI
+~~~~~~~~~
+
+If you are installing locally...
+
+::
+
+  $ pip install grpcio-tools
+
+Else system wide (on Ubuntu)...
+
+::
+
+  $ sudo pip install grpcio-tools
+
+If you're on Windows make sure that you installed the :code:`pip.exe` component
+when you installed Python (if not go back and install it!) then invoke:
+
+::
+
+  $ pip.exe install grpcio-tools
+
+Windows users may need to invoke :code:`pip.exe` from a command line ran as
+administrator.
+
+n.b. On Windows and on Mac OS X one *must* have a recent release of :code:`pip`
+to retrieve the proper wheel from PyPI. Be sure to upgrade to the latest
+version!
+
+You might also need to install Cython to handle installation via the source
+distribution if gRPC Python's system coverage with wheels does not happen to
+include your system.
+
+From Source
+~~~~~~~~~~~
+
+Building from source requires that you have the Python headers (usually a
+package named :code:`python-dev`) and Cython installed. It further requires a
+GCC-like compiler to go smoothly; you can probably get it to work without
+GCC-like stuff, but you may end up having a bad time.
+
+::
+
+  $ export REPO_ROOT=grpc  # REPO_ROOT can be any directory of your choice
+  $ git clone https://github.com/grpc/grpc.git $REPO_ROOT
+  $ cd $REPO_ROOT
+  $ git submodule update --init
+
+  $ cd tools/distrib/python/grpcio_tools
+  $ python ../make_grpcio_tools.py
+
+  # For the next command do `sudo pip install` if you get permission-denied errors
+  $ pip install .
+
+You cannot currently install Python from source on Windows. Things might work
+out for you in MSYS2 (follow the Linux instructions), but it isn't officially
+supported at the moment.
+
+Troubleshooting
+~~~~~~~~~~~~~~~
+
+Help, I ...
+
+* **... see a** :code:`pkg_resources.VersionConflict` **when I try to install
+  grpc**
+
+  This is likely because :code:`pip` doesn't own the offending dependency,
+  which in turn is likely because your operating system's package manager owns
+  it. You'll need to force the installation of the dependency:
+
+  :code:`pip install --ignore-installed $OFFENDING_DEPENDENCY`
+
+  For example, if you get an error like the following:
+
+  ::
+
+    Traceback (most recent call last):
+    File "<string>", line 17, in <module>
+     ...
+    File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 509, in find
+      raise VersionConflict(dist, req)
+    pkg_resources.VersionConflict: (six 1.8.0 (/usr/lib/python2.7/dist-packages), Requirement.parse('six>=1.10'))
+
+  You can fix it by doing:
+
+  ::
+
+    sudo pip install --ignore-installed six
+
+* **... see compiler errors on some platforms when either installing from source or from the source distribution**
+
+  If you see
+
+  ::
+
+    /tmp/pip-build-U8pSsr/cython/Cython/Plex/Scanners.c:4:20: fatal error: Python.h: No such file or directory
+    #include "Python.h"
+                    ^
+    compilation terminated.
+
+  You can fix it by installing `python-dev` package. i.e
+
+  ::
+
+    sudo apt-get install python-dev
+
+  If you see something similar to:
+
+  ::
+
+    third_party/protobuf/src/google/protobuf/stubs/mathlimits.h:173:31: note: in expansion of macro 'SIGNED_INT_MAX'
+    static const Type kPosMax = SIGNED_INT_MAX(Type); \\
+                               ^
+  And your toolchain is GCC (at the time of this writing, up through at least
+  GCC 6.0), this is probably a bug where GCC chokes on constant expressions
+  when the :code:`-fwrapv` flag is specified. You should consider setting your
+  environment with :code:`CFLAGS=-fno-wrapv` or using clang (:code:`CC=clang`).
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/__init__.py b/tools/distrib/python/grpcio_tools/grpc/tools/__init__.py
similarity index 100%
rename from tools/distrib/python/grpcio_tools/grpc/protoc/__init__.py
rename to tools/distrib/python/grpcio_tools/grpc/tools/__init__.py
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/main.cc b/tools/distrib/python/grpcio_tools/grpc/tools/main.cc
similarity index 98%
rename from tools/distrib/python/grpcio_tools/grpc/protoc/main.cc
rename to tools/distrib/python/grpcio_tools/grpc/tools/main.cc
index c9936a3..81675b4 100644
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/main.cc
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/main.cc
@@ -32,7 +32,7 @@
 
 #include "src/compiler/python_generator.h"
 
-#include "grpc/protoc/main.h"
+#include "grpc/tools/main.h"
 
 int protoc_main(int argc, char* argv[]) {
   google::protobuf::compiler::CommandLineInterface cli;
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/main.h b/tools/distrib/python/grpcio_tools/grpc/tools/main.h
similarity index 100%
rename from tools/distrib/python/grpcio_tools/grpc/protoc/main.h
rename to tools/distrib/python/grpcio_tools/grpc/tools/main.h
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
similarity index 96%
rename from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
rename to tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
index caafc54..b4dd0ec 100644
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
@@ -31,7 +31,7 @@
 
 import sys
 
-from grpc.protoc import protoc_compiler
+from grpc.tools import protoc_compiler
 
 
 if __name__ == '__main__':
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/protoc_compiler.pyx b/tools/distrib/python/grpcio_tools/grpc/tools/protoc_compiler.pyx
similarity index 97%
rename from tools/distrib/python/grpcio_tools/grpc/protoc/protoc_compiler.pyx
rename to tools/distrib/python/grpcio_tools/grpc/tools/protoc_compiler.pyx
index af15f3d..a653012 100644
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/protoc_compiler.pyx
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/protoc_compiler.pyx
@@ -29,7 +29,7 @@
 
 from libc cimport stdlib
 
-cdef extern from "grpc/protoc/main.h":
+cdef extern from "grpc/tools/main.h":
   int protoc_main(int argc, char *argv[])
 
 def run_main(list args not None):
diff --git a/tools/distrib/python/grpcio_tools/protoc_lib_deps.py b/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
index 9f31172..135ac5c 100644
--- a/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
+++ b/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
@@ -29,4 +29,4 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # AUTO-GENERATED BY make_grpcio_tools.py!
-CC_FILES=['google/protobuf/compiler/zip_writer.cc', 'google/protobuf/compiler/subprocess.cc', 'google/protobuf/compiler/ruby/ruby_generator.cc', 'google/protobuf/compiler/python/python_generator.cc', 'google/protobuf/compiler/plugin.pb.cc', 'google/protobuf/compiler/plugin.cc', 'google/protobuf/compiler/objectivec/objectivec_primitive_field.cc', 'google/protobuf/compiler/objectivec/objectivec_oneof.cc', 'google/protobuf/compiler/objectivec/objectivec_message_field.cc', 'google/protobuf/compiler/objectivec/objectivec_message.cc', 'google/protobuf/compiler/objectivec/objectivec_map_field.cc', 'google/protobuf/compiler/objectivec/objectivec_helpers.cc', 'google/protobuf/compiler/objectivec/objectivec_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_file.cc', 'google/protobuf/compiler/objectivec/objectivec_field.cc', 'google/protobuf/compiler/objectivec/objectivec_extension.cc', 'google/protobuf/compiler/objectivec/objectivec_enum_field.cc', 'google/protobuf/compiler/objectivec/objectivec_enum.cc', 'google/protobuf/compiler/js/js_generator.cc', 'google/protobuf/compiler/javanano/javanano_primitive_field.cc', 'google/protobuf/compiler/javanano/javanano_message_field.cc', 'google/protobuf/compiler/javanano/javanano_message.cc', 'google/protobuf/compiler/javanano/javanano_map_field.cc', 'google/protobuf/compiler/javanano/javanano_helpers.cc', 'google/protobuf/compiler/javanano/javanano_generator.cc', 'google/protobuf/compiler/javanano/javanano_file.cc', 'google/protobuf/compiler/javanano/javanano_field.cc', 'google/protobuf/compiler/javanano/javanano_extension.cc', 'google/protobuf/compiler/javanano/javanano_enum_field.cc', 'google/protobuf/compiler/javanano/javanano_enum.cc', 'google/protobuf/compiler/java/java_string_field_lite.cc', 'google/protobuf/compiler/java/java_string_field.cc', 'google/protobuf/compiler/java/java_shared_code_generator.cc', 'google/protobuf/compiler/java/java_service.cc', 'google/protobuf/compiler/java/java_primitive_field_lite.cc', 'google/protobuf/compiler/java/java_primitive_field.cc', 'google/protobuf/compiler/java/java_name_resolver.cc', 'google/protobuf/compiler/java/java_message_lite.cc', 'google/protobuf/compiler/java/java_message_field_lite.cc', 'google/protobuf/compiler/java/java_message_field.cc', 'google/protobuf/compiler/java/java_message_builder_lite.cc', 'google/protobuf/compiler/java/java_message_builder.cc', 'google/protobuf/compiler/java/java_message.cc', 'google/protobuf/compiler/java/java_map_field_lite.cc', 'google/protobuf/compiler/java/java_map_field.cc', 'google/protobuf/compiler/java/java_lazy_message_field_lite.cc', 'google/protobuf/compiler/java/java_lazy_message_field.cc', 'google/protobuf/compiler/java/java_helpers.cc', 'google/protobuf/compiler/java/java_generator_factory.cc', 'google/protobuf/compiler/java/java_generator.cc', 'google/protobuf/compiler/java/java_file.cc', 'google/protobuf/compiler/java/java_field.cc', 'google/protobuf/compiler/java/java_extension.cc', 'google/protobuf/compiler/java/java_enum_lite.cc', 'google/protobuf/compiler/java/java_enum_field_lite.cc', 'google/protobuf/compiler/java/java_enum_field.cc', 'google/protobuf/compiler/java/java_enum.cc', 'google/protobuf/compiler/java/java_doc_comment.cc', 'google/protobuf/compiler/java/java_context.cc', 'google/protobuf/compiler/csharp/csharp_wrapper_field.cc', 'google/protobuf/compiler/csharp/csharp_source_generator_base.cc', 'google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_message_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_reflection_class.cc', 'google/protobuf/compiler/csharp/csharp_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_message_field.cc', 'google/protobuf/compiler/csharp/csharp_message.cc', 'google/protobuf/compiler/csharp/csharp_map_field.cc', 'google/protobuf/compiler/csharp/csharp_helpers.cc', 'google/protobuf/compiler/csharp/csharp_generator.cc', 'google/protobuf/compiler/csharp/csharp_field_base.cc', 'google/protobuf/compiler/csharp/csharp_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_enum.cc', 'google/protobuf/compiler/csharp/csharp_doc_comment.cc', 'google/protobuf/compiler/cpp/cpp_string_field.cc', 'google/protobuf/compiler/cpp/cpp_service.cc', 'google/protobuf/compiler/cpp/cpp_primitive_field.cc', 'google/protobuf/compiler/cpp/cpp_message_field.cc', 'google/protobuf/compiler/cpp/cpp_message.cc', 'google/protobuf/compiler/cpp/cpp_map_field.cc', 'google/protobuf/compiler/cpp/cpp_helpers.cc', 'google/protobuf/compiler/cpp/cpp_generator.cc', 'google/protobuf/compiler/cpp/cpp_file.cc', 'google/protobuf/compiler/cpp/cpp_field.cc', 'google/protobuf/compiler/cpp/cpp_extension.cc', 'google/protobuf/compiler/cpp/cpp_enum_field.cc', 'google/protobuf/compiler/cpp/cpp_enum.cc', 'google/protobuf/compiler/command_line_interface.cc', 'google/protobuf/compiler/code_generator.cc', 'google/protobuf/wrappers.pb.cc', 'google/protobuf/wire_format.cc', 'google/protobuf/util/type_resolver_util.cc', 'google/protobuf/util/time_util.cc', 'google/protobuf/util/message_differencer.cc', 'google/protobuf/util/json_util.cc', 'google/protobuf/util/internal/utility.cc', 'google/protobuf/util/internal/type_info_test_helper.cc', 'google/protobuf/util/internal/type_info.cc', 'google/protobuf/util/internal/protostream_objectwriter.cc', 'google/protobuf/util/internal/protostream_objectsource.cc', 'google/protobuf/util/internal/proto_writer.cc', 'google/protobuf/util/internal/object_writer.cc', 'google/protobuf/util/internal/json_stream_parser.cc', 'google/protobuf/util/internal/json_objectwriter.cc', 'google/protobuf/util/internal/json_escaping.cc', 'google/protobuf/util/internal/field_mask_utility.cc', 'google/protobuf/util/internal/error_listener.cc', 'google/protobuf/util/internal/default_value_objectwriter.cc', 'google/protobuf/util/internal/datapiece.cc', 'google/protobuf/util/field_mask_util.cc', 'google/protobuf/util/field_comparator.cc', 'google/protobuf/unknown_field_set.cc', 'google/protobuf/type.pb.cc', 'google/protobuf/timestamp.pb.cc', 'google/protobuf/text_format.cc', 'google/protobuf/stubs/substitute.cc', 'google/protobuf/stubs/mathlimits.cc', 'google/protobuf/struct.pb.cc', 'google/protobuf/source_context.pb.cc', 'google/protobuf/service.cc', 'google/protobuf/reflection_ops.cc', 'google/protobuf/message.cc', 'google/protobuf/map_field.cc', 'google/protobuf/io/zero_copy_stream_impl.cc', 'google/protobuf/io/tokenizer.cc', 'google/protobuf/io/strtod.cc', 'google/protobuf/io/printer.cc', 'google/protobuf/io/gzip_stream.cc', 'google/protobuf/generated_message_reflection.cc', 'google/protobuf/field_mask.pb.cc', 'google/protobuf/extension_set_heavy.cc', 'google/protobuf/empty.pb.cc', 'google/protobuf/dynamic_message.cc', 'google/protobuf/duration.pb.cc', 'google/protobuf/descriptor_database.cc', 'google/protobuf/descriptor.pb.cc', 'google/protobuf/descriptor.cc', 'google/protobuf/compiler/parser.cc', 'google/protobuf/compiler/importer.cc', 'google/protobuf/api.pb.cc', 'google/protobuf/any.pb.cc', 'google/protobuf/any.cc', 'google/protobuf/wire_format_lite.cc', 'google/protobuf/stubs/time.cc', 'google/protobuf/stubs/strutil.cc', 'google/protobuf/stubs/structurally_valid.cc', 'google/protobuf/stubs/stringprintf.cc', 'google/protobuf/stubs/stringpiece.cc', 'google/protobuf/stubs/statusor.cc', 'google/protobuf/stubs/status.cc', 'google/protobuf/stubs/once.cc', 'google/protobuf/stubs/int128.cc', 'google/protobuf/stubs/common.cc', 'google/protobuf/stubs/bytestream.cc', 'google/protobuf/stubs/atomicops_internals_x86_msvc.cc', 'google/protobuf/stubs/atomicops_internals_x86_gcc.cc', 'google/protobuf/repeated_field.cc', 'google/protobuf/message_lite.cc', 'google/protobuf/io/zero_copy_stream_impl_lite.cc', 'google/protobuf/io/zero_copy_stream.cc', 'google/protobuf/io/coded_stream.cc', 'google/protobuf/generated_message_util.cc', 'google/protobuf/extension_set.cc', 'google/protobuf/arenastring.cc', 'google/protobuf/arena.cc']
+CC_FILES=['google/protobuf/compiler/zip_writer.cc', 'google/protobuf/compiler/subprocess.cc', 'google/protobuf/compiler/ruby/ruby_generator.cc', 'google/protobuf/compiler/python/python_generator.cc', 'google/protobuf/compiler/plugin.pb.cc', 'google/protobuf/compiler/plugin.cc', 'google/protobuf/compiler/objectivec/objectivec_primitive_field.cc', 'google/protobuf/compiler/objectivec/objectivec_oneof.cc', 'google/protobuf/compiler/objectivec/objectivec_message_field.cc', 'google/protobuf/compiler/objectivec/objectivec_message.cc', 'google/protobuf/compiler/objectivec/objectivec_map_field.cc', 'google/protobuf/compiler/objectivec/objectivec_helpers.cc', 'google/protobuf/compiler/objectivec/objectivec_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_file.cc', 'google/protobuf/compiler/objectivec/objectivec_field.cc', 'google/protobuf/compiler/objectivec/objectivec_extension.cc', 'google/protobuf/compiler/objectivec/objectivec_enum_field.cc', 'google/protobuf/compiler/objectivec/objectivec_enum.cc', 'google/protobuf/compiler/js/js_generator.cc', 'google/protobuf/compiler/javanano/javanano_primitive_field.cc', 'google/protobuf/compiler/javanano/javanano_message_field.cc', 'google/protobuf/compiler/javanano/javanano_message.cc', 'google/protobuf/compiler/javanano/javanano_map_field.cc', 'google/protobuf/compiler/javanano/javanano_helpers.cc', 'google/protobuf/compiler/javanano/javanano_generator.cc', 'google/protobuf/compiler/javanano/javanano_file.cc', 'google/protobuf/compiler/javanano/javanano_field.cc', 'google/protobuf/compiler/javanano/javanano_extension.cc', 'google/protobuf/compiler/javanano/javanano_enum_field.cc', 'google/protobuf/compiler/javanano/javanano_enum.cc', 'google/protobuf/compiler/java/java_string_field_lite.cc', 'google/protobuf/compiler/java/java_string_field.cc', 'google/protobuf/compiler/java/java_shared_code_generator.cc', 'google/protobuf/compiler/java/java_service.cc', 'google/protobuf/compiler/java/java_primitive_field_lite.cc', 'google/protobuf/compiler/java/java_primitive_field.cc', 'google/protobuf/compiler/java/java_name_resolver.cc', 'google/protobuf/compiler/java/java_message_lite.cc', 'google/protobuf/compiler/java/java_message_field_lite.cc', 'google/protobuf/compiler/java/java_message_field.cc', 'google/protobuf/compiler/java/java_message_builder_lite.cc', 'google/protobuf/compiler/java/java_message_builder.cc', 'google/protobuf/compiler/java/java_message.cc', 'google/protobuf/compiler/java/java_map_field_lite.cc', 'google/protobuf/compiler/java/java_map_field.cc', 'google/protobuf/compiler/java/java_lazy_message_field_lite.cc', 'google/protobuf/compiler/java/java_lazy_message_field.cc', 'google/protobuf/compiler/java/java_helpers.cc', 'google/protobuf/compiler/java/java_generator_factory.cc', 'google/protobuf/compiler/java/java_generator.cc', 'google/protobuf/compiler/java/java_file.cc', 'google/protobuf/compiler/java/java_field.cc', 'google/protobuf/compiler/java/java_extension_lite.cc', 'google/protobuf/compiler/java/java_extension.cc', 'google/protobuf/compiler/java/java_enum_lite.cc', 'google/protobuf/compiler/java/java_enum_field_lite.cc', 'google/protobuf/compiler/java/java_enum_field.cc', 'google/protobuf/compiler/java/java_enum.cc', 'google/protobuf/compiler/java/java_doc_comment.cc', 'google/protobuf/compiler/java/java_context.cc', 'google/protobuf/compiler/csharp/csharp_wrapper_field.cc', 'google/protobuf/compiler/csharp/csharp_source_generator_base.cc', 'google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_message_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_reflection_class.cc', 'google/protobuf/compiler/csharp/csharp_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_message_field.cc', 'google/protobuf/compiler/csharp/csharp_message.cc', 'google/protobuf/compiler/csharp/csharp_map_field.cc', 'google/protobuf/compiler/csharp/csharp_helpers.cc', 'google/protobuf/compiler/csharp/csharp_generator.cc', 'google/protobuf/compiler/csharp/csharp_field_base.cc', 'google/protobuf/compiler/csharp/csharp_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_enum.cc', 'google/protobuf/compiler/csharp/csharp_doc_comment.cc', 'google/protobuf/compiler/cpp/cpp_string_field.cc', 'google/protobuf/compiler/cpp/cpp_service.cc', 'google/protobuf/compiler/cpp/cpp_primitive_field.cc', 'google/protobuf/compiler/cpp/cpp_message_field.cc', 'google/protobuf/compiler/cpp/cpp_message.cc', 'google/protobuf/compiler/cpp/cpp_map_field.cc', 'google/protobuf/compiler/cpp/cpp_helpers.cc', 'google/protobuf/compiler/cpp/cpp_generator.cc', 'google/protobuf/compiler/cpp/cpp_file.cc', 'google/protobuf/compiler/cpp/cpp_field.cc', 'google/protobuf/compiler/cpp/cpp_extension.cc', 'google/protobuf/compiler/cpp/cpp_enum_field.cc', 'google/protobuf/compiler/cpp/cpp_enum.cc', 'google/protobuf/compiler/command_line_interface.cc', 'google/protobuf/compiler/code_generator.cc', 'google/protobuf/wrappers.pb.cc', 'google/protobuf/wire_format.cc', 'google/protobuf/util/type_resolver_util.cc', 'google/protobuf/util/time_util.cc', 'google/protobuf/util/message_differencer.cc', 'google/protobuf/util/json_util.cc', 'google/protobuf/util/internal/utility.cc', 'google/protobuf/util/internal/type_info_test_helper.cc', 'google/protobuf/util/internal/type_info.cc', 'google/protobuf/util/internal/protostream_objectwriter.cc', 'google/protobuf/util/internal/protostream_objectsource.cc', 'google/protobuf/util/internal/proto_writer.cc', 'google/protobuf/util/internal/object_writer.cc', 'google/protobuf/util/internal/json_stream_parser.cc', 'google/protobuf/util/internal/json_objectwriter.cc', 'google/protobuf/util/internal/json_escaping.cc', 'google/protobuf/util/internal/field_mask_utility.cc', 'google/protobuf/util/internal/error_listener.cc', 'google/protobuf/util/internal/default_value_objectwriter.cc', 'google/protobuf/util/internal/datapiece.cc', 'google/protobuf/util/field_mask_util.cc', 'google/protobuf/util/field_comparator.cc', 'google/protobuf/unknown_field_set.cc', 'google/protobuf/type.pb.cc', 'google/protobuf/timestamp.pb.cc', 'google/protobuf/text_format.cc', 'google/protobuf/stubs/substitute.cc', 'google/protobuf/stubs/mathlimits.cc', 'google/protobuf/struct.pb.cc', 'google/protobuf/source_context.pb.cc', 'google/protobuf/service.cc', 'google/protobuf/reflection_ops.cc', 'google/protobuf/message.cc', 'google/protobuf/map_field.cc', 'google/protobuf/io/zero_copy_stream_impl.cc', 'google/protobuf/io/tokenizer.cc', 'google/protobuf/io/strtod.cc', 'google/protobuf/io/printer.cc', 'google/protobuf/io/gzip_stream.cc', 'google/protobuf/generated_message_reflection.cc', 'google/protobuf/field_mask.pb.cc', 'google/protobuf/extension_set_heavy.cc', 'google/protobuf/empty.pb.cc', 'google/protobuf/dynamic_message.cc', 'google/protobuf/duration.pb.cc', 'google/protobuf/descriptor_database.cc', 'google/protobuf/descriptor.pb.cc', 'google/protobuf/descriptor.cc', 'google/protobuf/compiler/parser.cc', 'google/protobuf/compiler/importer.cc', 'google/protobuf/api.pb.cc', 'google/protobuf/any.pb.cc', 'google/protobuf/any.cc', 'google/protobuf/wire_format_lite.cc', 'google/protobuf/stubs/time.cc', 'google/protobuf/stubs/strutil.cc', 'google/protobuf/stubs/structurally_valid.cc', 'google/protobuf/stubs/stringprintf.cc', 'google/protobuf/stubs/stringpiece.cc', 'google/protobuf/stubs/statusor.cc', 'google/protobuf/stubs/status.cc', 'google/protobuf/stubs/once.cc', 'google/protobuf/stubs/int128.cc', 'google/protobuf/stubs/common.cc', 'google/protobuf/stubs/bytestream.cc', 'google/protobuf/stubs/atomicops_internals_x86_msvc.cc', 'google/protobuf/stubs/atomicops_internals_x86_gcc.cc', 'google/protobuf/repeated_field.cc', 'google/protobuf/message_lite.cc', 'google/protobuf/io/zero_copy_stream_impl_lite.cc', 'google/protobuf/io/zero_copy_stream.cc', 'google/protobuf/io/coded_stream.cc', 'google/protobuf/generated_message_util.cc', 'google/protobuf/extension_set.cc', 'google/protobuf/arenastring.cc', 'google/protobuf/arena.cc']
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index 0281c01..576f7ae 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -30,6 +30,7 @@
 from distutils import extension
 import os
 import os.path
+import shlex
 import sys
 
 import setuptools
@@ -40,18 +41,28 @@
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, os.path.abspath('.'))
 
+# There are some situations (like on Windows) where CC, CFLAGS, and LDFLAGS are
+# entirely ignored/dropped/forgotten by distutils and its Cygwin/MinGW support.
+# We use these environment variables to thus get around that without locking
+# ourselves in w.r.t. the multitude of operating systems this ought to build on.
+# By default we assume a GCC-like compiler.
+EXTRA_COMPILE_ARGS = shlex.split(os.environ.get('GRPC_PYTHON_CFLAGS',
+                                                '-frtti -std=c++11'))
+EXTRA_LINK_ARGS = shlex.split(os.environ.get('GRPC_PYTHON_LDFLAGS',
+                                             '-lpthread'))
+
 import protoc_lib_deps
 import grpc_version
 
 def protoc_ext_module():
   plugin_sources = [
-      'grpc/protoc/main.cc',
+      'grpc/tools/main.cc',
       'grpc_root/src/compiler/python_generator.cc'] + [
       os.path.join('third_party/protobuf/src', cc_file)
       for cc_file in protoc_lib_deps.CC_FILES]
   plugin_ext = extension.Extension(
-      name='grpc.protoc.protoc_compiler',
-      sources=['grpc/protoc/protoc_compiler.pyx'] + plugin_sources,
+      name='grpc.tools.protoc_compiler',
+      sources=['grpc/tools/protoc_compiler.pyx'] + plugin_sources,
       include_dirs=[
           '.',
           'grpc_root',
@@ -60,7 +71,8 @@
       ],
       language='c++',
       define_macros=[('HAVE_PTHREAD', 1)],
-      extra_compile_args=['-lpthread', '-frtti', '-std=c++11'],
+      extra_compile_args=EXTRA_COMPILE_ARGS,
+      extra_link_args=EXTRA_LINK_ARGS,
   )
   return plugin_ext
 
@@ -71,7 +83,7 @@
 setuptools.setup(
   name='grpcio_tools',
   version=grpc_version.VERSION,
-  license='',
+  license='3-clause BSD',
   ext_modules=maybe_cythonize([
       protoc_ext_module(),
   ]),
diff --git a/tools/dockerfile/grpc_clang_format/Dockerfile b/tools/dockerfile/grpc_clang_format/Dockerfile
index 41239e9..ab58017 100644
--- a/tools/dockerfile/grpc_clang_format/Dockerfile
+++ b/tools/dockerfile/grpc_clang_format/Dockerfile
@@ -30,8 +30,8 @@
 FROM ubuntu:wily
 RUN apt-get update
 RUN apt-get -y install wget
-RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily main >> /etc/apt/sources.list
-RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily main >> /etc/apt/sources.list
+RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
 RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
 RUN apt-get update
 RUN apt-get -y install clang-format-3.8
diff --git a/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile b/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile
new file mode 100644
index 0000000..606b765
--- /dev/null
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_python/Dockerfile
@@ -0,0 +1,103 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM debian:jessie
+
+# Install Git and basic packages.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  golang \
+  gyp \
+  lcov \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  perl \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+#================
+# Build profiling
+RUN apt-get update && apt-get install -y time && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+#=================
+# C++ dependencies
+RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
+
+# Google Cloud platform API libraries
+RUN apt-get update && apt-get install -y python-pip && apt-get clean
+RUN pip install --upgrade google-api-python-client
+
+
+#====================
+# Python dependencies
+
+# Install dependencies
+
+RUN apt-get update && apt-get install -y \
+    python-all-dev \
+    python3-all-dev \
+    python-pip
+
+# Install Python packages from PyPI
+RUN pip install pip --upgrade
+RUN pip install virtualenv
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.0.0a2 tox
+
+
+RUN pip install coverage
+RUN pip install oauth2client
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
old mode 100644
new mode 100755
similarity index 78%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
index caafc54..e65332f
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-
+#!/bin/bash
 # Copyright 2016, Google Inc.
 # All rights reserved.
 #
@@ -28,11 +27,20 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Python interop server and client in a base image.
+set -e
 
-import sys
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
 
-from grpc.protoc import protoc_compiler
+# copy service account keys if available
+cp -r /var/local/jenkins/service_account $HOME || true
 
+cd /var/local/git/grpc
 
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+tools/run_tests/run_tests.py -l python -c opt --build_only
+
+# Build c++ interop client
+make metrics_client -j
+
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index aabca41..eed8425 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -786,7 +786,6 @@
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_win32.h \
 include/grpc/impl/codegen/time.h \
-include/grpc/grpc_cronet.h \
 include/grpc/grpc_security.h \
 include/grpc/grpc_security_constants.h \
 include/grpc/census.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 3ffc617..7e0d5eb 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -786,7 +786,6 @@
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_win32.h \
 include/grpc/impl/codegen/time.h \
-include/grpc/grpc_cronet.h \
 include/grpc/grpc_security.h \
 include/grpc/grpc_security_constants.h \
 include/grpc/census.h \
@@ -914,44 +913,8 @@
 src/core/ext/client_config/subchannel_call_holder.h \
 src/core/ext/client_config/subchannel_index.h \
 src/core/ext/client_config/uri_parser.h \
-include/grpc/byte_buffer.h \
-include/grpc/grpc.h \
-include/grpc/impl/codegen/alloc.h \
-include/grpc/impl/codegen/atm.h \
-include/grpc/impl/codegen/atm_gcc_atomic.h \
-include/grpc/impl/codegen/atm_gcc_sync.h \
-include/grpc/impl/codegen/atm_win32.h \
-include/grpc/impl/codegen/byte_buffer.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/log.h \
-include/grpc/impl/codegen/port_platform.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/slice_buffer.h \
-include/grpc/impl/codegen/status.h \
-include/grpc/impl/codegen/sync.h \
-include/grpc/impl/codegen/sync_generic.h \
-include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_win32.h \
-include/grpc/impl/codegen/time.h \
-include/grpc/status.h \
-include/grpc/support/alloc.h \
-include/grpc/support/atm.h \
-include/grpc/support/host_port.h \
-include/grpc/support/log.h \
-include/grpc/support/port_platform.h \
-include/grpc/support/slice.h \
-include/grpc/support/slice_buffer.h \
-include/grpc/support/string_util.h \
-include/grpc/support/sync.h \
-include/grpc/support/time.h \
-include/grpc/support/useful.h \
-src/core/lib/support/string.h \
-third_party/objective_c/Cronet/cronet_c_for_grpc.h \
 src/core/ext/lb_policy/grpclb/load_balancer_api.h \
-src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h \
+src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h \
 third_party/nanopb/pb.h \
 third_party/nanopb/pb_common.h \
 third_party/nanopb/pb_decode.h \
@@ -1108,11 +1071,8 @@
 src/core/ext/client_config/uri_parser.c \
 src/core/ext/transport/chttp2/server/insecure/server_chttp2.c \
 src/core/ext/transport/chttp2/client/insecure/channel_create.c \
-src/core/ext/transport/cronet/client/secure/cronet_channel_create.c \
-src/core/ext/transport/cronet/transport/cronet_api_dummy.c \
-src/core/ext/transport/cronet/transport/cronet_transport.c \
 src/core/ext/lb_policy/grpclb/load_balancer_api.c \
-src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c \
+src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c \
 third_party/nanopb/pb_common.c \
 third_party/nanopb/pb_decode.c \
 third_party/nanopb/pb_encode.c \
diff --git a/tools/gce/create_linux_performance_worker.sh b/tools/gce/create_linux_performance_worker.sh
index 8c9cc46..c9a0ffa 100755
--- a/tools/gce/create_linux_performance_worker.sh
+++ b/tools/gce/create_linux_performance_worker.sh
@@ -42,14 +42,15 @@
 ZONE=us-central1-b  # this zone allows 32core machines
 
 INSTANCE_NAME="${1:-grpc-performance-server1}"
-MACHINE_TYPE=n1-standard-32
+MACHINE_TYPE=n1-standard-8
 
 gcloud compute instances create $INSTANCE_NAME \
     --project="$CLOUD_PROJECT" \
     --zone "$ZONE" \
     --machine-type $MACHINE_TYPE \
     --image ubuntu-15-10 \
-    --boot-disk-size 300
+    --boot-disk-size 300 \
+    --scopes https://www.googleapis.com/auth/bigquery
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
 sleep 60
diff --git a/tools/gce/create_linux_worker.sh b/tools/gce/create_linux_worker.sh
index dff0b1c..c41e4d2 100755
--- a/tools/gce/create_linux_worker.sh
+++ b/tools/gce/create_linux_worker.sh
@@ -43,7 +43,7 @@
     --project="$CLOUD_PROJECT" \
     --zone "$ZONE" \
     --machine-type n1-standard-8 \
-    --image ubuntu-14-04 \
+    --image ubuntu-15-10 \
     --boot-disk-size 1000
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
diff --git a/tools/gce/linux_performance_worker_init.sh b/tools/gce/linux_performance_worker_init.sh
index df29581..dc47842 100755
--- a/tools/gce/linux_performance_worker_init.sh
+++ b/tools/gce/linux_performance_worker_init.sh
@@ -77,6 +77,9 @@
 # perftools
 sudo apt-get install -y google-perftools libgoogle-perftools-dev
 
+# netperf
+sudo apt-get install -y netperf
+
 # C++ dependencies
 sudo apt-get install -y libgflags-dev libgtest-dev libc++-dev clang
 
@@ -94,6 +97,7 @@
 # Node dependencies (nvm has to be installed under user jenkins)
 touch .profile
 curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.25.4/install.sh | bash
+source ~/.nvm/nvm.sh
 nvm install 0.12 && npm config set cache /tmp/npm-cache
 nvm install 4 && npm config set cache /tmp/npm-cache
 nvm install 5 && npm config set cache /tmp/npm-cache
@@ -115,3 +119,6 @@
 gem install bundler
 
 # Java dependencies - nothing as we already have Java JDK 8
+
+# Go dependencies
+sudo apt-get install -y golang-go
diff --git a/tools/gce/linux_worker_init.sh b/tools/gce/linux_worker_init.sh
index ef6a5d1..afcf7a5 100755
--- a/tools/gce/linux_worker_init.sh
+++ b/tools/gce/linux_worker_init.sh
@@ -37,7 +37,7 @@
 sudo apt-get update
 
 # Install JRE
-sudo apt-get install -y openjdk-7-jre
+sudo apt-get install -y openjdk-8-jre
 sudo apt-get install -y unzip lsof
 
 # Install Docker
diff --git a/include/grpc/grpc_cronet.h b/tools/gource/create_auth_context.h
similarity index 81%
copy from include/grpc/grpc_cronet.h
copy to tools/gource/create_auth_context.h
index 295e0f5..387407b 100644
--- a/include/grpc/grpc_cronet.h
+++ b/tools/gource/create_auth_context.h
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2016, Google Inc.
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -30,22 +30,13 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
+#include <memory>
 
-#ifndef GRPC_GRPC_CRONET_H
-#define GRPC_GRPC_CRONET_H
-
+#include <grpc++/security/auth_context.h>
 #include <grpc/grpc.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+namespace grpc {
 
-GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
-    void *engine, const char *target, const grpc_channel_args *args,
-    void *reserved);
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
 
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* GRPC_GRPC_CRONET_H */
+}  // namespace grpc
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/gource/gen-all-logs.sh
old mode 100644
new mode 100755
similarity index 76%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/gource/gen-all-logs.sh
index caafc54..85352c5
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/gource/gen-all-logs.sh
@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-
+#!/bin/bash
 # Copyright 2016, Google Inc.
 # All rights reserved.
 #
@@ -29,10 +28,20 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys
+set -ex
 
-from grpc.protoc import protoc_compiler
+outdir=`pwd`
 
-
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+tmpdir=`mktemp -d`
+mkdir -p $tmpdir/logs
+repos="grpc grpc-common grpc-go grpc-java grpc.github.io grpc-tools homebrew-grpc grpc-docker-library"
+for repo in $repos
+do
+  cd $tmpdir
+  git clone https://github.com/grpc/$repo.git
+  cd $repo
+  gource --output-custom-log $tmpdir/logs/$repo
+  sed -i .backup "s,\|/,\|/$repo/,g" $tmpdir/logs/$repo
+done
+rm $tmpdir/logs/*.backup
+cat $tmpdir/logs/* | sort -n > $outdir/all-logs.txt
diff --git a/tools/gource/gource.sh b/tools/gource/gource.sh
index 0199609..b3dad5d 100755
--- a/tools/gource/gource.sh
+++ b/tools/gource/gource.sh
@@ -28,5 +28,13 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-gource --multi-sampling -c 4 -s 0.1 --max-file-lag 0.05 --max-files 0 -e 0.05 --hide filenames,dirnames $*
-
+gource                          \
+  --multi-sampling              \
+  -s 0.1                        \
+  --max-file-lag 0.05           \
+  --max-files 0                 \
+  -e 0.01                       \
+  --hide filenames,dirnames     \
+  --disable-auto-rotate         \
+  --file-filter '/grpc/doc/ref' \
+  $*
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/gource/make-video.sh
old mode 100644
new mode 100755
similarity index 80%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/gource/make-video.sh
index caafc54..02d79df
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/gource/make-video.sh
@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-
+#!/bin/bash
 # Copyright 2016, Google Inc.
 # All rights reserved.
 #
@@ -29,10 +28,20 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys
+set -ex
 
-from grpc.protoc import protoc_compiler
-
-
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+dst=$1
+shift
+$(dirname $0)/gource.sh \
+  --disable-progress    \
+  --stop-at-end         \
+  --output-ppm-stream - \
+  $@ |                  \
+ffmpeg                  \
+  -y                    \
+  -r 60                 \
+  -f image2pipe         \
+  -vcodec ppm           \
+  -i -                  \
+  -vcodec libx264       \
+  $dst
diff --git a/tools/jenkins/run_performance.sh b/tools/jenkins/run_performance.sh
index 13a3327..99b920f 100755
--- a/tools/jenkins/run_performance.sh
+++ b/tools/jenkins/run_performance.sh
@@ -34,4 +34,4 @@
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
-tools/run_tests/run_performance_tests.py -l c++ node ruby csharp python
+tools/run_tests/run_performance_tests.py -l c++ node ruby csharp python --netperf --category smoketest
diff --git a/tools/run_tests/artifact_targets.py b/tools/run_tests/artifact_targets.py
index 477bd46..bd1269c 100644
--- a/tools/run_tests/artifact_targets.py
+++ b/tools/run_tests/artifact_targets.py
@@ -113,37 +113,7 @@
       # defines ourselves.
       # TODO(atash) get better platform-detection support in core so we don't
       # need to do this manually...
-      environ['CFLAGS'] = " ".join([
-        '-DGPR_NO_AUTODETECT_PLATFORM',
-        '-DGPR_PLATFORM_STRING=\\"manylinux\\"',
-        '-DGPR_POSIX_CRASH_HANDLER=1',
-        '-DGPR_CPU_LINUX=1',
-        '-DGPR_GCC_ATOMIC=1',
-        '-DGPR_GCC_TLS=1',
-        '-DGPR_LINUX=1',
-        '-DGPR_LINUX_LOG=1',
-        #'-DGPR_LINUX_MULTIPOLL_WITH_EPOLL=1',
-        '-DGPR_POSIX_SOCKET=1',
-        '-DGPR_POSIX_WAKEUP_FD=1',
-        '-DGPR_POSIX_SOCKETADDR=1',
-        #'-DGPR_LINUX_EVENTFD=1',
-        '-DGPR_POSIX_NO_SPECIAL_WAKEUP_FD=1',
-        #'-DGPR_LINUX_SOCKETUTILS=1',
-        '-DGPR_POSIX_SOCKETUTILS=1',
-        '-DGPR_HAVE_UNIX_SOCKET=1',
-        '-DGPR_HAVE_IP_PKTINFO=1',
-        '-DGPR_HAVE_IPV6_RECVPKTINFO=1',
-        '-DGPR_LINUX_ENV=1',
-        '-DGPR_POSIX_FILE=1',
-        '-DGPR_POSIX_TMPFILE=1',
-        '-DGPR_POSIX_STRING=1',
-        '-DGPR_POSIX_SUBPROCESS=1',
-        '-DGPR_POSIX_SYNC=1',
-        '-DGPR_POSIX_TIME=1',
-        '-DGPR_GETPID_IN_UNISTD_H=1',
-        '-DGPR_HAVE_MSG_NOSIGNAL=1',
-        '-DGPR_ARCH_{arch}=1'.format(arch=('32' if self.arch == 'x86' else '64')),
-      ])
+      environ['CFLAGS'] = '-DGPR_MANYLINUX1=1'
       return create_docker_jobspec(self.name,
           'tools/dockerfile/grpc_artifact_python_manylinux_%s' % self.arch,
           'tools/run_tests/build_artifact_python.sh',
diff --git a/tools/run_tests/build_artifact_node.bat b/tools/run_tests/build_artifact_node.bat
index 84c63c2..c5bd726 100644
--- a/tools/run_tests/build_artifact_node.bat
+++ b/tools/run_tests/build_artifact_node.bat
@@ -27,7 +27,7 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set node_versions=0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0
+set node_versions=0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0
 
 set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
 
@@ -38,12 +38,12 @@
 mkdir artifacts
 
 for %%v in (%node_versions%) do (
-  call node-pre-gyp configure build --target=%%v --target_arch=%1
+  call .\node_modules\.bin\node-pre-gyp.cmd configure build --target=%%v --target_arch=%1
 
 @rem Try again after removing openssl headers
   rmdir "%HOMEDRIVE%%HOMEPATH%\.node-gyp\%%v\include\node\openssl" /S /Q
   rmdir "%HOMEDRIVE%%HOMEPATH%\.node-gyp\iojs-%%v\include\node\openssl" /S /Q
-  call node-pre-gyp build package testpackage --target=%%v --target_arch=%1 || goto :error
+  call .\node_modules\.bin\node-pre-gyp.cmd build package testpackage --target=%%v --target_arch=%1 || goto :error
 
   xcopy /Y /I /S build\stage\* artifacts\ || goto :error
 )
diff --git a/tools/run_tests/build_artifact_node.sh b/tools/run_tests/build_artifact_node.sh
index ef3476a..9d06472 100755
--- a/tools/run_tests/build_artifact_node.sh
+++ b/tools/run_tests/build_artifact_node.sh
@@ -42,7 +42,7 @@
 
 npm update
 
-node_versions=( 0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 )
+node_versions=( 0.12.0 1.0.0 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 )
 
 for version in ${node_versions[@]}
 do
diff --git a/tools/run_tests/build_artifact_python.bat b/tools/run_tests/build_artifact_python.bat
index 636ae0d..fea0275 100644
--- a/tools/run_tests/build_artifact_python.bat
+++ b/tools/run_tests/build_artifact_python.bat
@@ -41,7 +41,7 @@
 copy /Y vsprojects\x64\Release\grpc_dll.dll src\python\grpcio\grpc\_cython\_windows\grpc_c.64.python || goto :error
 
 
-set PATH=C:\%1;C:\%1\scripts;%PATH%
+set PATH=C:\%1;C:\%1\scripts;C:\msys64\mingw%2\bin;%PATH%
 
 pip install --upgrade six
 pip install --upgrade setuptools
@@ -50,12 +50,26 @@
 set GRPC_PYTHON_USE_CUSTOM_BDIST=0
 set GRPC_PYTHON_BUILD_WITH_CYTHON=1
 
+@rem TODO(atash): maybe we could avoid the grpc_c.(32|64).python shim above if
+@rem this used the right python build?
 python setup.py bdist_wheel
 
 @rem Build gRPC Python tools
-set PATH=C:\msys64\mingw%2\bin;%PATH%
-set CC=C:\msys64\mingw%2\bin\g++.exe
-set CFLAGS=-fno-wrapv
+@rem
+@rem Because this is windows and *everything seems to hate Windows* we have to
+@rem set all of these flags ourselves because Python won't help us (see the
+@rem setup.py of the grpcio_tools project).
+set GRPC_PYTHON_CFLAGS=-fno-wrapv -frtti -std=c++11
+@rem Further confusing things, MSYS2's mingw64 tries to dynamically link
+@rem libgcc, libstdc++, and winpthreads. We have to override this or our
+@rem extensions end up linking to MSYS2 DLLs, which the normal Python on
+@rem Windows user won't have... and ON TOP OF THIS, there's MinGW's GCC default
+@rem behavior of linking msvcrt.dll as the C runtime library, which we need to
+@rem override so that Python's distutils doesn't link us against multiple C
+@rem runtimes.
+python -c "from distutils.cygwinccompiler import get_msvcr; print(get_msvcr()[0])" > temp.txt
+set /p PYTHON_MSVCR=<temp.txt
+set GRPC_PYTHON_LDFLAGS=-static-libgcc -static-libstdc++ -mcrtdll=%PYTHON_MSVCR% -static -lpthread
 python tools\distrib\python\make_grpcio_tools.py
 if %2 == 32 (
   python tools\distrib\python\grpcio_tools\setup.py build_ext -c mingw32
diff --git a/tools/run_tests/build_artifact_python.sh b/tools/run_tests/build_artifact_python.sh
index 35c3a48..4320f97 100755
--- a/tools/run_tests/build_artifact_python.sh
+++ b/tools/run_tests/build_artifact_python.sh
@@ -59,7 +59,11 @@
 ${SETARCH_CMD} ${PYTHON} setup.py  \
     bdist_wheel
 
-# Build gRPC tools package
+# Build gRPC tools package source distribution
+${SETARCH_CMD} ${PYTHON} tools/distrib/python/grpcio_tools/setup.py  \
+    sdist
+
+# Build gRPC tools package binary distribution
 ${PYTHON} tools/distrib/python/make_grpcio_tools.py
 CFLAGS="$CFLAGS -fno-wrapv" ${SETARCH_CMD} \
   ${PYTHON} tools/distrib/python/grpcio_tools/setup.py bdist_wheel
diff --git a/tools/run_tests/build_package_node.sh b/tools/run_tests/build_package_node.sh
index 6bc9466..4646072 100755
--- a/tools/run_tests/build_package_node.sh
+++ b/tools/run_tests/build_package_node.sh
@@ -55,7 +55,7 @@
 cp grpc-tools-*.tgz $artifacts/
 tools_version=$(npm list | grep -oP '(?<=grpc-tools@)\S+')
 
-output_dir=$artifacts/grpc-precompiled-binaries/node/grpc-tools/$tools_version
+output_dir=$artifacts/grpc-precompiled-binaries/node/grpc-tools/v$tools_version
 mkdir -p $output_dir
 
 for arch in {x86,x64}; do
diff --git a/tools/run_tests/performance/bq_upload_result.py b/tools/run_tests/performance/bq_upload_result.py
index ebd28f7..fbccf3b 100755
--- a/tools/run_tests/performance/bq_upload_result.py
+++ b/tools/run_tests/performance/bq_upload_result.py
@@ -48,20 +48,47 @@
 _PROJECT_ID='grpc-testing'
 
 
-def _upload_scenario_result_to_bigquery(dataset_id, table_id, result_file):
+def _upload_netperf_latency_csv_to_bigquery(dataset_id, table_id, result_file):
+  with open(result_file, 'r') as f:
+    (col1, col2, col3) = f.read().split(',')
+    latency50 = float(col1.strip()) * 1000
+    latency90 = float(col2.strip()) * 1000
+    latency99 = float(col3.strip()) * 1000
+
+    scenario_result = {
+        'scenario': {
+          'name': 'netperf_tcp_rr'
+        },
+        'summary': {
+          'latency50': latency50,
+          'latency90': latency90,
+          'latency99': latency99
+        }
+    }
+
   bq = big_query_utils.create_big_query()
   _create_results_table(bq, dataset_id, table_id)
 
+  if not _insert_result(bq, dataset_id, table_id, scenario_result, flatten=False):
+    print 'Error uploading result to bigquery.'
+    sys.exit(1)
+
+
+def _upload_scenario_result_to_bigquery(dataset_id, table_id, result_file):
   with open(result_file, 'r') as f:
     scenario_result = json.loads(f.read())
 
+  bq = big_query_utils.create_big_query()
+  _create_results_table(bq, dataset_id, table_id)
+
   if not _insert_result(bq, dataset_id, table_id, scenario_result):
     print 'Error uploading result to bigquery.'
     sys.exit(1)
 
 
-def _insert_result(bq, dataset_id, table_id, scenario_result):
-  _flatten_result_inplace(scenario_result)
+def _insert_result(bq, dataset_id, table_id, scenario_result, flatten=True):
+  if flatten:
+    _flatten_result_inplace(scenario_result)
   _populate_metadata_inplace(scenario_result)
   row = big_query_utils.make_row(str(uuid.uuid4()), scenario_result)
   return big_query_utils.insert_rows(bq,
@@ -127,9 +154,17 @@
                   help='Bigquery "dataset.table" to upload results to.')
 argp.add_argument('--file_to_upload', default='scenario_result.json', type=str,
                   help='Report file to upload.')
+argp.add_argument('--file_format',
+                  choices=['scenario_result','netperf_latency_csv'],
+                  default='scenario_result',
+                  help='Format of the file to upload.')
 
 args = argp.parse_args()
 
 dataset_id, table_id = args.bq_result_table.split('.', 2)
-_upload_scenario_result_to_bigquery(dataset_id, table_id, args.file_to_upload)
+
+if args.file_format == 'netperf_latency_csv':
+  _upload_netperf_latency_csv_to_bigquery(dataset_id, table_id, args.file_to_upload)
+else:
+  _upload_scenario_result_to_bigquery(dataset_id, table_id, args.file_to_upload)
 print 'Successfully uploaded %s to BigQuery.\n' % args.file_to_upload
diff --git a/tools/run_tests/performance/build_performance.sh b/tools/run_tests/performance/build_performance.sh
index 8cfe1c4..352c679 100755
--- a/tools/run_tests/performance/build_performance.sh
+++ b/tools/run_tests/performance/build_performance.sh
@@ -33,8 +33,6 @@
 
 cd $(dirname $0)/../../..
 
-#TODO(jtattermusch): add support for more languages
-
 CONFIG=${CONFIG:-opt}
 
 # build C++ qps worker & driver always - we need at least the driver to
@@ -53,6 +51,9 @@
     (cd ../grpc-java/ &&
       ./gradlew -PskipCodegen=true :grpc-benchmarks:installDist)
     ;;
+  "go")
+    tools/run_tests/performance/build_performance_go.sh
+    ;;
   *)
     tools/run_tests/run_tests.py -l $language -c $CONFIG --build_only -j 8
     ;;
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/run_tests/performance/build_performance_go.sh
old mode 100644
new mode 100755
similarity index 76%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/run_tests/performance/build_performance_go.sh
index caafc54..3719cc5
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/run_tests/performance/build_performance_go.sh
@@ -1,6 +1,5 @@
-#!/usr/bin/env python
-
-# Copyright 2016, Google Inc.
+#!/bin/bash
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -29,10 +28,17 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys
+set -ex
 
-from grpc.protoc import protoc_compiler
+cd $(dirname $0)/../../..
 
+export GOPATH=$(pwd)/../gopath
 
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+# Get grpc-go and the dependencies but get rid of the upstream/master version
+go get google.golang.org/grpc
+rm -rf "${GOPATH}/src/google.golang.org/grpc"
+
+# Get the revision of grpc-go we want to test
+git clone --recursive ../grpc-go ${GOPATH}/src/google.golang.org/grpc
+
+(cd ${GOPATH}/src/google.golang.org/grpc/benchmark/worker && go install)
diff --git a/tools/run_tests/performance/kill_workers.sh b/tools/run_tests/performance/kill_workers.sh
index 7a87634..f306f0c 100755
--- a/tools/run_tests/performance/kill_workers.sh
+++ b/tools/run_tests/performance/kill_workers.sh
@@ -52,3 +52,6 @@
 
 # Java
 jps | grep LoadWorker | awk '{print $1}' | xargs kill -9
+
+# Go
+killall -9 worker || true
diff --git a/tools/run_tests/performance/remote_host_prepare.sh b/tools/run_tests/performance/remote_host_prepare.sh
index d7f539a..f81102b 100755
--- a/tools/run_tests/performance/remote_host_prepare.sh
+++ b/tools/run_tests/performance/remote_host_prepare.sh
@@ -39,7 +39,7 @@
 # mess with the results, be rough and reboot the slave here
 # and wait for it to come back online.
 # could also kill jenkins.
-ssh "${USER_AT_HOST}" "killall -9 qps_worker mono node ruby || true"
+ssh "${USER_AT_HOST}" "killall -9 qps_worker mono node ruby worker || true"
 
 # push the current sources to the slave and unpack it.
 scp ../grpc.tar "${USER_AT_HOST}:~/performance_workspace"
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/run_tests/performance/run_netperf.sh
old mode 100644
new mode 100755
similarity index 76%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/run_tests/performance/run_netperf.sh
index caafc54..298edbe
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/run_tests/performance/run_netperf.sh
@@ -1,6 +1,5 @@
-#!/usr/bin/env python
-
-# Copyright 2016, Google Inc.
+#!/bin/bash
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -29,10 +28,18 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys
+set -ex
 
-from grpc.protoc import protoc_compiler
+cd $(dirname $0)/../../..
 
+netperf >netperf_latency.txt -P 0 -t TCP_RR -H "$NETPERF_SERVER_HOST" -- -r 1,1 -o P50_LATENCY,P90_LATENCY,P99_LATENCY
 
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+cat netperf_latency.txt
+
+if [ "$BQ_RESULT_TABLE" != "" ]
+then
+  tools/run_tests/performance/bq_upload_result.py \
+      --file_to_upload=netperf_latency.txt \
+      --file_format=netperf_latency_csv \
+      --bq_result_table="$BQ_RESULT_TABLE"
+fi
diff --git a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py b/tools/run_tests/performance/run_worker_go.sh
old mode 100644
new mode 100755
similarity index 89%
copy from tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
copy to tools/run_tests/performance/run_worker_go.sh
index caafc54..6b1242a
--- a/tools/distrib/python/grpcio_tools/grpc/protoc/compiler.py
+++ b/tools/run_tests/performance/run_worker_go.sh
@@ -1,6 +1,5 @@
-#!/usr/bin/env python
-
-# Copyright 2016, Google Inc.
+#!/bin/bash
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -29,10 +28,10 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys
+set -ex
 
-from grpc.protoc import protoc_compiler
+cd $(dirname $0)/../../..
 
+export GOPATH=$(pwd)/../gopath
 
-if __name__ == '__main__':
-  protoc_compiler.run_main(sys.argv)
+${GOPATH}/bin/worker $@
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index ddbe237..4fe66df 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -29,11 +29,12 @@
 
 # performance scenario configuration for various languages
 
-SINGLE_MACHINE_CORES=8
 WARMUP_SECONDS=5
 JAVA_WARMUP_SECONDS=15  # Java needs more warmup time for JIT to kick in.
 BENCHMARK_SECONDS=30
 
+SMOKETEST='smoketest'
+
 SECURE_SECARGS = {'use_test_ca': True,
                   'server_host_override': 'foo.test.google.fr'}
 
@@ -69,6 +70,86 @@
 WIDE=64
 
 
+def _get_secargs(is_secure):
+  if is_secure:
+    return SECURE_SECARGS
+  else:
+    return None
+
+
+def remove_nonproto_fields(scenario):
+  """Remove special-purpose that contains some extra info about the scenario
+  but don't belong to the ScenarioConfig protobuf message"""
+  scenario.pop('CATEGORIES', None)
+  scenario.pop('SERVER_LANGUAGE', None)
+  return scenario
+
+
+def _ping_pong_scenario(name, rpc_type,
+                        client_type, server_type,
+                        secure=True,
+                        use_generic_payload=False,
+                        use_unconstrained_client=False,
+                        server_language=None,
+                        server_core_limit=0,
+                        async_server_threads=0,
+                        warmup_seconds=WARMUP_SECONDS,
+                        categories=[]):
+  """Creates a basic ping pong scenario."""
+  scenario = {
+    'name': name,
+    'num_servers': 1,
+    'num_clients': 1,
+    'client_config': {
+      'client_type': client_type,
+      'security_params': _get_secargs(secure),
+      'outstanding_rpcs_per_channel': 1,
+      'client_channels': 1,
+      'async_client_threads': 1,
+      'rpc_type': rpc_type,
+      'load_params': {
+        'closed_loop': {}
+      },
+      'histogram_params': HISTOGRAM_PARAMS,
+    },
+    'server_config': {
+      'server_type': server_type,
+      'security_params': _get_secargs(secure),
+      'core_limit': server_core_limit,
+      'async_server_threads': async_server_threads,
+    },
+    'warmup_seconds': warmup_seconds,
+    'benchmark_seconds': BENCHMARK_SECONDS
+  }
+  if use_generic_payload:
+    if server_type != 'ASYNC_GENERIC_SERVER':
+      raise Exception('Use ASYNC_GENERIC_SERVER for generic payload.')
+    scenario['client_config']['payload_config'] = EMPTY_GENERIC_PAYLOAD
+    scenario['server_config']['payload_config'] = EMPTY_GENERIC_PAYLOAD
+  else:
+    # For proto payload, only the client should get the config.
+    scenario['client_config']['payload_config'] = EMPTY_PROTO_PAYLOAD
+
+  if use_unconstrained_client:
+    scenario['num_clients'] = 0  # use as many client as available.
+    # TODO(jtattermusch): for SYNC_CLIENT, this will create 100*64 threads
+    # and that's probably too much (at least for wrapped languages).
+    scenario['client_config']['outstanding_rpcs_per_channel'] = DEEP
+    scenario['client_config']['client_channels'] = WIDE
+    scenario['client_config']['async_client_threads'] = 0
+  else:
+    scenario['client_config']['outstanding_rpcs_per_channel'] = 1
+    scenario['client_config']['client_channels'] = 1
+    scenario['client_config']['async_client_threads'] = 1
+
+  if server_language:
+    # the SERVER_LANGUAGE field is recognized by run_performance_tests.py
+    scenario['SERVER_LANGUAGE'] = server_language
+  if categories:
+    scenario['CATEGORIES'] = categories
+  return scenario
+
+
 class CXXLanguage:
 
   def __init__(self):
@@ -83,205 +164,61 @@
   def scenarios(self):
     # TODO(ctiller): add 70% load latency test
     for secure in [True, False]:
-      if secure:
-        secstr = 'secure'
-        secargs = SECURE_SECARGS
-      else:
-        secstr = 'insecure'
-        secargs = None
+      secstr = 'secure' if secure else 'insecure'
+      smoketest_categories = [SMOKETEST] if secure else None
 
-      yield {
-          'name': 'cpp_generic_async_streaming_ping_pong_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 1,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': 1,
-            'client_channels': 1,
-            'async_client_threads': 1,
-            'rpc_type': 'STREAMING',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_GENERIC_SERVER',
-            'security_params': secargs,
-            'core_limit': 1,
-            'async_server_threads': 1,
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_generic_async_streaming_qps_unconstrained_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 0,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': DEEP,
-            'client_channels': WIDE,
-            'async_client_threads': 0,
-            'rpc_type': 'STREAMING',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_GENERIC_SERVER',
-            'security_params': secargs,
-            'core_limit': SINGLE_MACHINE_CORES/2,
-            'async_server_threads': 0,
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_generic_async_streaming_qps_one_server_core_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 0,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': DEEP,
-            'client_channels': WIDE,
-            'async_client_threads': 0,
-            'rpc_type': 'STREAMING',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_GENERIC_SERVER',
-            'security_params': secargs,
-            'core_limit': 1,
-            'async_server_threads': 1,
-            'payload_config': EMPTY_GENERIC_PAYLOAD,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_protobuf_async_streaming_qps_unconstrained_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 0,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': DEEP,
-            'client_channels': WIDE,
-            'async_client_threads': 0,
-            'rpc_type': 'STREAMING',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_SERVER',
-            'security_params': secargs,
-            'core_limit': SINGLE_MACHINE_CORES/2,
-            'async_server_threads': 0,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_protobuf_async_streaming_ping_pong_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 1,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': 1,
-            'client_channels': 1,
-            'async_client_threads': 1,
-            'rpc_type': 'STREAMING',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_SERVER',
-            'security_params': secargs,
-            'core_limit': 1,
-            'async_server_threads': 1,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_protobuf_sync_unary_ping_pong_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 1,
-          'client_config': {
-            'client_type': 'SYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': 1,
-            'client_channels': 1,
-            'async_client_threads': 0,
-            'rpc_type': 'UNARY',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'SYNC_SERVER',
-            'security_params': secargs,
-            'core_limit': 1,
-            'async_server_threads': 0,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
-      yield {
-          'name': 'cpp_protobuf_async_unary_ping_pong_%s'
-                  % secstr,
-          'num_servers': 1,
-          'num_clients': 1,
-          'client_config': {
-            'client_type': 'ASYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': 1,
-            'client_channels': 1,
-            'async_client_threads': 1,
-            'rpc_type': 'UNARY',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'ASYNC_SERVER',
-            'security_params': secargs,
-            'core_limit': 1,
-            'async_server_threads': 1,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_generic_payload=True, server_core_limit=1, async_server_threads=1,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'cpp_protobuf_async_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          server_core_limit=1, async_server_threads=1,
+          secure=secure)
+
+      yield _ping_pong_scenario(
+          'cpp_protobuf_async_unary_ping_pong_%s' % secstr, rpc_type='UNARY',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          server_core_limit=1, async_server_threads=1,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'cpp_protobuf_sync_unary_ping_pong_%s' % secstr, rpc_type='UNARY',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          server_core_limit=1, async_server_threads=1,
+          secure=secure)
+
+      yield _ping_pong_scenario(
+          'cpp_protobuf_async_unary_qps_unconstrained_%s' % secstr, rpc_type='UNARY',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'cpp_protobuf_async_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure)
+
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_unconstrained_client=True, use_generic_payload=True,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_qps_one_server_core_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_unconstrained_client=True, use_generic_payload=True,
+          server_core_limit=1, async_server_threads=1,
+          secure=secure)
 
   def __str__(self):
     return 'c++'
@@ -299,113 +236,46 @@
     return 100
 
   def scenarios(self):
-    secargs = SECURE_SECARGS
-    yield {
-        'name': 'csharp_generic_async_streaming_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'STREAMING',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_GENERIC_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'ASYNC_GENERIC_SERVER',
-          'security_params': secargs,
-          'core_limit': 0,
-          'async_server_threads': 0,
-          'payload_config': EMPTY_GENERIC_PAYLOAD,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS
-    }
-    yield {
-        'name': 'csharp_protobuf_async_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'ASYNC_SERVER',
-          'security_params': secargs,
-          'core_limit': 0,
-          'async_server_threads': 0,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS
-    }
-    yield {
-        'name': 'csharp_protobuf_sync_to_async_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'SYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'ASYNC_SERVER',
-          'security_params': secargs,
-          'core_limit': 0,
-          'async_server_threads': 0,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS
-    }
-    yield {
-        'name': 'csharp_to_cpp_protobuf_sync_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'SYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'SYNC_SERVER',
-          'security_params': secargs,
-          'core_limit': 1,
-          'async_server_threads': 1,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS,
-        'SERVER_LANGUAGE': 'c++'  # recognized by run_performance_tests.py
-    }
+    yield _ping_pong_scenario(
+        'csharp_generic_async_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+        use_generic_payload=True,
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER')
+
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_unary_ping_pong', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'csharp_protobuf_sync_to_async_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER')
+
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        use_unconstrained_client=True,
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_streaming_qps_unconstrained', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        use_unconstrained_client=True)
+
+    yield _ping_pong_scenario(
+        'csharp_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1,
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'csharp_to_cpp_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1)
 
   def __str__(self):
     return 'csharp'
@@ -424,34 +294,45 @@
     return 200
 
   def scenarios(self):
-    # TODO(jtattermusch): add more scenarios
-    secargs = SECURE_SECARGS
-    yield {
-        'name': 'node_protobuf_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'ASYNC_SERVER',
-          'security_params': secargs,
-          'core_limit': 0,
-          'async_server_threads': 1,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS
-    }
+    # TODO(jtattermusch): make this scenario work
+    #yield _ping_pong_scenario(
+    #    'node_generic_async_streaming_ping_pong', rpc_type='STREAMING',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+    #    use_generic_payload=True)
+
+    # TODO(jtattermusch): make this scenario work
+    #yield _ping_pong_scenario(
+    #    'node_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER')
+
+    yield _ping_pong_scenario(
+        'node_protobuf_unary_ping_pong', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'node_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        use_unconstrained_client=True,
+        categories=[SMOKETEST])
+
+    # TODO(jtattermusch): make this scenario work
+    #yield _ping_pong_scenario(
+    #    'node_protobuf_async_streaming_qps_unconstrained', rpc_type='STREAMING',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+    #    use_unconstrained_client=True)
+
+    # TODO(jtattermusch): make this scenario work
+    #yield _ping_pong_scenario(
+    #    'node_to_cpp_protobuf_async_unary_ping_pong', rpc_type='UNARY',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+    #    server_language='c++', server_core_limit=1, async_server_threads=1)
+
+    # TODO(jtattermusch): make this scenario work
+    #yield _ping_pong_scenario(
+    #    'node_to_cpp_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+    #    server_language='c++', server_core_limit=1, async_server_threads=1)
 
   def __str__(self):
     return 'node'
@@ -468,114 +349,51 @@
     return 500
 
   def scenarios(self):
-    yield {
-        'name': 'python_to_cpp_protobuf_streaming_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': SECURE_SECARGS,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'STREAMING',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'SYNC_SERVER',
-          'security_params': SECURE_SECARGS,
-          'core_limit': 0,
-          'async_server_threads': 1,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS,
-        'SERVER_LANGUAGE': 'c++' 
-    }
-    yield {
-        'name': 'python_protobuf_sync_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'SYNC_CLIENT',
-          'security_params': SECURE_SECARGS,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'SYNC_SERVER',
-          'security_params': SECURE_SECARGS,
-          'core_limit': 0,
-          'async_server_threads': 1,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS,
-    }
-    yield {
-        'name': 'python_protobuf_async_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': SECURE_SECARGS,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-            'rpc_type': 'UNARY',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'SYNC_SERVER',
-            'security_params': SECURE_SECARGS,
-            'core_limit': 0,
-            'async_server_threads': 1,
-          },
-          'warmup_seconds': WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS,
-    }
-    yield {
-        'name': 'python_to_cpp_single_channel_throughput',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'ASYNC_CLIENT',
-          'security_params': SECURE_SECARGS,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'STREAMING',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': BIG_GENERIC_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'ASYNC_GENERIC_SERVER',
-          'security_params': SECURE_SECARGS,
-          'core_limit': SINGLE_MACHINE_CORES/2,
-          'async_server_threads': 1,
-          'payload_config': BIG_GENERIC_PAYLOAD,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS,
-        'SERVER_LANGUAGE': 'c++'
-    }
-      
+    # TODO(issue #6522): Empty streaming requests does not work for python
+    #yield _ping_pong_scenario(
+    #    'python_generic_async_streaming_ping_pong', rpc_type='STREAMING',
+    #    client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+    #    use_generic_payload=True,
+    #    categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'python_protobuf_async_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='SYNC_SERVER')
+
+    yield _ping_pong_scenario(
+        'python_protobuf_async_unary_ping_pong', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='SYNC_SERVER')
+
+    yield _ping_pong_scenario(
+        'python_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        categories=[SMOKETEST])
+
+    # TODO(jtattermusch): 
+    # The qps_worker server gets thread starved with ~6400 threads, the GIL
+    # enforces that a single thread runs at a time, with no way to set thread
+    # priority.  Re-evaluate after changing DEEP and WIDE.
+    #yield _ping_pong_scenario(
+    #    'python_protobuf_sync_unary_qps_unconstrained', rpc_type='UNARY',
+    #    client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+    #    use_unconstrained_client=True)
+
+    yield _ping_pong_scenario(
+        'python_protobuf_async_streaming_qps_unconstrained', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='SYNC_SERVER',
+        use_unconstrained_client=True)
+
+    yield _ping_pong_scenario(
+        'python_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1,
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'python_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1)
+
   def __str__(self):
     return 'python'
 
@@ -592,34 +410,37 @@
     return 300
 
   def scenarios(self):
-    # TODO(jtattermusch): add more scenarios
-    secargs = SECURE_SECARGS
-    yield {
-        'name': 'ruby_protobuf_unary_ping_pong',
-        'num_servers': 1,
-        'num_clients': 1,
-        'client_config': {
-          'client_type': 'SYNC_CLIENT',
-          'security_params': secargs,
-          'outstanding_rpcs_per_channel': 1,
-          'client_channels': 1,
-          'async_client_threads': 1,
-          'rpc_type': 'UNARY',
-          'load_params': {
-            'closed_loop': {}
-          },
-          'payload_config': EMPTY_PROTO_PAYLOAD,
-          'histogram_params': HISTOGRAM_PARAMS,
-        },
-        'server_config': {
-          'server_type': 'SYNC_SERVER',
-          'security_params': secargs,
-          'core_limit': 0,
-          'async_server_threads': 1,
-        },
-        'warmup_seconds': WARMUP_SECONDS,
-        'benchmark_seconds': BENCHMARK_SECONDS
-    }
+    yield _ping_pong_scenario(
+        'ruby_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        categories=[SMOKETEST])
+
+    yield _ping_pong_scenario(
+        'ruby_protobuf_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        categories=[SMOKETEST])
+
+    # TODO: scenario reports QPS of 0.0
+    #yield _ping_pong_scenario(
+    #    'ruby_protobuf_sync_unary_qps_unconstrained', rpc_type='UNARY',
+    #    client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+    #    use_unconstrained_client=True)
+
+    # TODO: scenario reports QPS of 0.0
+    #yield _ping_pong_scenario(
+    #    'ruby_protobuf_sync_streaming_qps_unconstrained', rpc_type='STREAMING',
+    #    client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+    #    use_unconstrained_client=True)
+
+    yield _ping_pong_scenario(
+        'ruby_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1)
+
+    yield _ping_pong_scenario(
+        'ruby_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', server_core_limit=1, async_server_threads=1)
 
   def __str__(self):
     return 'ruby'
@@ -638,46 +459,134 @@
     return 400
 
   def scenarios(self):
-    # TODO(jtattermusch): add more scenarios
     for secure in [True, False]:
-      if secure:
-        secstr = 'secure'
-        secargs = SECURE_SECARGS
-      else:
-        secstr = 'insecure'
-        secargs = None
+      secstr = 'secure' if secure else 'insecure'
+      smoketest_categories = [SMOKETEST] if secure else None
 
-      yield {
-          'name': 'java_protobuf_unary_ping_pong_%s' % secstr,
-          'num_servers': 1,
-          'num_clients': 1,
-          'client_config': {
-            'client_type': 'SYNC_CLIENT',
-            'security_params': secargs,
-            'outstanding_rpcs_per_channel': 1,
-            'client_channels': 1,
-            'async_client_threads': 1,
-            'rpc_type': 'UNARY',
-            'load_params': {
-              'closed_loop': {}
-            },
-            'payload_config': EMPTY_PROTO_PAYLOAD,
-            'histogram_params': HISTOGRAM_PARAMS,
-          },
-          'server_config': {
-            'server_type': 'SYNC_SERVER',
-            'security_params': secargs,
-            'core_limit': 0,
-            'async_server_threads': 1,
-          },
-          'warmup_seconds': JAVA_WARMUP_SECONDS,
-          'benchmark_seconds': BENCHMARK_SECONDS
-      }
+      yield _ping_pong_scenario(
+          'java_generic_async_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_generic_payload=True, async_server_threads=1,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'java_protobuf_async_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          async_server_threads=1,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS)
+
+      yield _ping_pong_scenario(
+          'java_protobuf_async_unary_ping_pong_%s' % secstr, rpc_type='UNARY',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          async_server_threads=1,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'java_protobuf_unary_ping_pong_%s' % secstr, rpc_type='UNARY',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          async_server_threads=1,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS)
+
+      yield _ping_pong_scenario(
+          'java_protobuf_async_unary_qps_unconstrained_%s' % secstr, rpc_type='UNARY',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'java_protobuf_async_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS)
+
+      yield _ping_pong_scenario(
+          'java_generic_async_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_unconstrained_client=True, use_generic_payload=True,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS)
+
+      yield _ping_pong_scenario(
+          'java_generic_async_streaming_qps_one_server_core_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_unconstrained_client=True, use_generic_payload=True,
+          async_server_threads=1,
+          secure=secure, warmup_seconds=JAVA_WARMUP_SECONDS)
+
+      # TODO(jtattermusch): add scenarios java vs C++ 
 
   def __str__(self):
     return 'java'
 
 
+class GoLanguage:
+
+  def __init__(self):
+    pass
+    self.safename = str(self)
+
+  def worker_cmdline(self):
+    return ['tools/run_tests/performance/run_worker_go.sh']
+
+  def worker_port_offset(self):
+    return 600
+
+  def scenarios(self):
+    for secure in [True, False]:
+      secstr = 'secure' if secure else 'insecure'
+      smoketest_categories = [SMOKETEST] if secure else None
+
+      # ASYNC_GENERIC_SERVER for Go actually uses a sync streaming server,
+      # but that's mostly because of lack of better name of the enum value. 
+      yield _ping_pong_scenario(
+          'go_generic_sync_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='SYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_generic_payload=True, async_server_threads=1,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'go_protobuf_sync_streaming_ping_pong_%s' % secstr, rpc_type='STREAMING',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          async_server_threads=1,
+          secure=secure)
+
+      yield _ping_pong_scenario(
+          'go_protobuf_sync_unary_ping_pong_%s' % secstr, rpc_type='UNARY',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          async_server_threads=1,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'go_protobuf_sync_unary_qps_unconstrained_%s' % secstr, rpc_type='UNARY',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'go_protobuf_sync_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+          use_unconstrained_client=True,
+          secure=secure)
+
+      # ASYNC_GENERIC_SERVER for Go actually uses a sync streaming server,
+      # but that's mostly because of lack of better name of the enum value.
+      yield _ping_pong_scenario(
+          'go_generic_sync_streaming_qps_unconstrained_%s' % secstr, rpc_type='STREAMING',
+          client_type='SYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          use_unconstrained_client=True, use_generic_payload=True,
+          secure=secure)
+
+      # TODO(jtattermusch): add scenarios go vs C++ 
+
+  def __str__(self):
+    return 'go'
+
+
 LANGUAGES = {
     'c++' : CXXLanguage(),
     'csharp' : CSharpLanguage(),
@@ -685,4 +594,5 @@
     'ruby' : RubyLanguage(),
     'java' : JavaLanguage(),
     'python' : PythonLanguage(),
+    'go' : GoLanguage(),
 }
diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 5519666..a7728e7 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -89,7 +89,7 @@
   jobspec = jobset.JobSpec(
       cmdline=cmdline,
       shortname=shortname,
-      timeout_seconds=30*60)
+      timeout_seconds=2*60*60)
   return QpsWorkerJob(jobspec, language, host_and_port)
 
 
@@ -131,6 +131,36 @@
       verbose_success=True)
 
 
+def create_netperf_jobspec(server_host='localhost', client_host=None,
+                           bq_result_table=None):
+  """Runs netperf benchmark."""
+  cmd = 'NETPERF_SERVER_HOST="%s" ' % server_host
+  if bq_result_table:
+    cmd += 'BQ_RESULT_TABLE="%s" ' % bq_result_table
+  if client_host:
+    # If netperf is running remotely, the env variables populated by Jenkins
+    # won't be available on the client, but we need them for uploading results
+    # to BigQuery.
+    jenkins_job_name = os.getenv('JOB_NAME')
+    if jenkins_job_name:
+      cmd += 'JOB_NAME="%s" ' % jenkins_job_name
+    jenkins_build_number = os.getenv('BUILD_NUMBER')
+    if jenkins_build_number:
+      cmd += 'BUILD_NUMBER="%s" ' % jenkins_build_number
+
+  cmd += 'tools/run_tests/performance/run_netperf.sh'
+  if client_host:
+    user_at_host = '%s@%s' % (_REMOTE_HOST_USERNAME, client_host)
+    cmd = 'ssh %s "cd ~/performance_workspace/grpc/ && "%s' % (user_at_host, pipes.quote(cmd))
+
+  return jobset.JobSpec(
+      cmdline=[cmd],
+      shortname='netperf',
+      timeout_seconds=60,
+      shell=True,
+      verbose_success=True)
+
+
 def archive_repo(languages):
   """Archives local version of repo including submodules."""
   cmdline=['tar', '-cf', '../grpc.tar', '../grpc/']
@@ -244,34 +274,51 @@
 
 
 def create_scenarios(languages, workers_by_lang, remote_host=None, regex='.*',
-                     bq_result_table=None):
+                     category='all', bq_result_table=None,
+                     netperf=False, netperf_hosts=[]):
   """Create jobspecs for scenarios to run."""
   all_workers = [worker
                  for workers in workers_by_lang.values()
                  for worker in workers]
   scenarios = []
+
+  if netperf:
+    if not netperf_hosts:
+      netperf_server='localhost'
+      netperf_client=None
+    elif len(netperf_hosts) == 1:
+      netperf_server=netperf_hosts[0]
+      netperf_client=netperf_hosts[0]
+    else:
+      netperf_server=netperf_hosts[0]
+      netperf_client=netperf_hosts[1]
+    scenarios.append(create_netperf_jobspec(server_host=netperf_server,
+                                            client_host=netperf_client,
+                                            bq_result_table=bq_result_table))
+
   for language in languages:
     for scenario_json in language.scenarios():
       if re.search(args.regex, scenario_json['name']):
-        workers = workers_by_lang[str(language)]
-        # 'SERVER_LANGUAGE' is an indicator for this script to pick
-        # a server in different language. It doesn't belong to the Scenario
-        # schema, so we also need to remove it.
-        custom_server_lang = scenario_json.pop('SERVER_LANGUAGE', None)
-        if custom_server_lang:
-          if not workers_by_lang.get(custom_server_lang, []):
-            print 'Warning: Skipping scenario %s as' % scenario_json['name']
-            print('SERVER_LANGUAGE is set to %s yet the language has '
-                  'not been selected with -l' % custom_server_lang)
-            continue
-          for idx in range(0, scenario_json['num_servers']):
-            # replace first X workers by workers of a different language
-            workers[idx] = workers_by_lang[custom_server_lang][idx]
-        scenario = create_scenario_jobspec(scenario_json,
-                                           workers,
-                                           remote_host=remote_host,
-                                           bq_result_table=bq_result_table)
-        scenarios.append(scenario)
+        if category in scenario_json.get('CATEGORIES', []) or category == 'all':
+          workers = workers_by_lang[str(language)]
+          # 'SERVER_LANGUAGE' is an indicator for this script to pick
+          # a server in different language.
+          custom_server_lang = scenario_json.get('SERVER_LANGUAGE', None)
+          scenario_json = scenario_config.remove_nonproto_fields(scenario_json)
+          if custom_server_lang:
+            if not workers_by_lang.get(custom_server_lang, []):
+              print 'Warning: Skipping scenario %s as' % scenario_json['name']
+              print('SERVER_LANGUAGE is set to %s yet the language has '
+                    'not been selected with -l' % custom_server_lang)
+              continue
+            for idx in range(0, scenario_json['num_servers']):
+              # replace first X workers by workers of a different language
+              workers[idx] = workers_by_lang[custom_server_lang][idx]
+          scenario = create_scenario_jobspec(scenario_json,
+                                             workers,
+                                             remote_host=remote_host,
+                                             bq_result_table=bq_result_table)
+          scenarios.append(scenario)
 
   # the very last scenario requests shutting down the workers.
   scenarios.append(create_quit_jobspec(all_workers, remote_host=remote_host))
@@ -298,7 +345,7 @@
 argp.add_argument('-l', '--language',
                   choices=['all'] + sorted(scenario_config.LANGUAGES.keys()),
                   nargs='+',
-                  default=['all'],
+                  required=True,
                   help='Languages to benchmark.')
 argp.add_argument('--remote_driver_host',
                   default=None,
@@ -311,6 +358,15 @@
                   help='Regex to select scenarios to run.')
 argp.add_argument('--bq_result_table', default=None, type=str,
                   help='Bigquery "dataset.table" to upload results to.')
+argp.add_argument('--category',
+                  choices=['smoketest','all'],
+                  default='smoketest',
+                  help='Select a category of tests to run. Smoketest runs by default.')
+argp.add_argument('--netperf',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help='Run netperf benchmark as one of the scenarios.')
 
 args = argp.parse_args()
 
@@ -354,7 +410,11 @@
                                workers_by_lang=worker_addresses,
                                remote_host=args.remote_driver_host,
                                regex=args.regex,
-                               bq_result_table=args.bq_result_table)
+                               category=args.category,
+                               bq_result_table=args.bq_result_table,
+                               netperf=args.netperf,
+                               netperf_hosts=args.remote_worker_host)
+
   if not scenarios:
     raise Exception('No scenarios to run')
 
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index 3349d28..3b8d81b 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -45,7 +45,7 @@
  05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
  c99458533a9b4c743ed51537e25989ea55944908 third_party/googletest (release-1.7.0)
  f8ac463766281625ad710900479130c7fcb4d63b third_party/nanopb (nanopb-0.3.4-29-gf8ac463)
- d5fb408ddc281ffcadeb08699e65bb694656d0bd third_party/protobuf (v3.0.0-beta-2)
+ a1938b2aa9ca86ce7ce50c27ff9737c1008d2a03 third_party/protobuf (v3.0.0-beta-3-pre1)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
 EOF
 
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 737d8c5..b36f0a8 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -2248,8 +2248,8 @@
       "grpc_test_util"
     ], 
     "headers": [
-      "src/proto/grpc/lb/v0/load_balancer.grpc.pb.h", 
-      "src/proto/grpc/lb/v0/load_balancer.pb.h"
+      "src/proto/grpc/lb/v1/load_balancer.grpc.pb.h", 
+      "src/proto/grpc/lb/v1/load_balancer.pb.h"
     ], 
     "language": "c++", 
     "name": "grpclb_api_test", 
@@ -3415,6 +3415,23 @@
     ], 
     "headers": [], 
     "language": "c", 
+    "name": "large_metadata_bad_client_test", 
+    "src": [
+      "test/core/bad_client/tests/large_metadata.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "bad_client_test", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc_test_util_unsecure", 
+      "grpc_unsecure"
+    ], 
+    "headers": [], 
+    "language": "c", 
     "name": "server_registered_method_bad_client_test", 
     "src": [
       "test/core/bad_client/tests/server_registered_method.c"
@@ -4158,8 +4175,7 @@
       "grpc_transport_chttp2_client_insecure", 
       "grpc_transport_chttp2_client_secure", 
       "grpc_transport_chttp2_server_insecure", 
-      "grpc_transport_chttp2_server_secure", 
-      "grpc_transport_cronet_client_secure"
+      "grpc_transport_chttp2_server_secure"
     ], 
     "headers": [], 
     "language": "c", 
@@ -5952,15 +5968,15 @@
     ], 
     "headers": [
       "src/core/ext/lb_policy/grpclb/load_balancer_api.h", 
-      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h"
+      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h"
     ], 
     "language": "c", 
     "name": "grpc_lb_policy_grpclb", 
     "src": [
       "src/core/ext/lb_policy/grpclb/load_balancer_api.c", 
       "src/core/ext/lb_policy/grpclb/load_balancer_api.h", 
-      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c", 
-      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h"
+      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c", 
+      "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h"
     ], 
     "third_party": false, 
     "type": "filegroup"
@@ -6033,7 +6049,6 @@
       "tsi"
     ], 
     "headers": [
-      "include/grpc/grpc_cronet.h", 
       "include/grpc/grpc_security.h", 
       "include/grpc/grpc_security_constants.h", 
       "src/core/lib/security/auth_filters.h", 
@@ -6049,7 +6064,6 @@
     "language": "c", 
     "name": "grpc_secure", 
     "src": [
-      "include/grpc/grpc_cronet.h", 
       "include/grpc/grpc_security.h", 
       "include/grpc/grpc_security_constants.h", 
       "src/core/lib/http/httpcli_security_connector.c", 
@@ -6288,121 +6302,6 @@
   {
     "deps": [], 
     "headers": [
-      "include/grpc/byte_buffer.h", 
-      "include/grpc/grpc.h", 
-      "include/grpc/impl/codegen/alloc.h", 
-      "include/grpc/impl/codegen/atm.h", 
-      "include/grpc/impl/codegen/atm_gcc_atomic.h", 
-      "include/grpc/impl/codegen/atm_gcc_sync.h", 
-      "include/grpc/impl/codegen/atm_win32.h", 
-      "include/grpc/impl/codegen/byte_buffer.h", 
-      "include/grpc/impl/codegen/compression_types.h", 
-      "include/grpc/impl/codegen/connectivity_state.h", 
-      "include/grpc/impl/codegen/grpc_types.h", 
-      "include/grpc/impl/codegen/log.h", 
-      "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/propagation_bits.h", 
-      "include/grpc/impl/codegen/slice.h", 
-      "include/grpc/impl/codegen/slice_buffer.h", 
-      "include/grpc/impl/codegen/status.h", 
-      "include/grpc/impl/codegen/sync.h", 
-      "include/grpc/impl/codegen/sync_generic.h", 
-      "include/grpc/impl/codegen/sync_posix.h", 
-      "include/grpc/impl/codegen/sync_win32.h", 
-      "include/grpc/impl/codegen/time.h", 
-      "include/grpc/status.h", 
-      "include/grpc/support/alloc.h", 
-      "include/grpc/support/atm.h", 
-      "include/grpc/support/host_port.h", 
-      "include/grpc/support/log.h", 
-      "include/grpc/support/port_platform.h", 
-      "include/grpc/support/slice.h", 
-      "include/grpc/support/slice_buffer.h", 
-      "include/grpc/support/string_util.h", 
-      "include/grpc/support/sync.h", 
-      "include/grpc/support/time.h", 
-      "include/grpc/support/useful.h", 
-      "src/core/ext/transport/chttp2/transport/incoming_metadata.h", 
-      "src/core/lib/channel/channel_stack.h", 
-      "src/core/lib/channel/context.h", 
-      "src/core/lib/debug/trace.h", 
-      "src/core/lib/iomgr/closure.h", 
-      "src/core/lib/iomgr/exec_ctx.h", 
-      "src/core/lib/iomgr/pollset.h", 
-      "src/core/lib/iomgr/pollset_set.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/surface/channel.h", 
-      "src/core/lib/surface/channel_stack_type.h", 
-      "src/core/lib/transport/byte_stream.h", 
-      "src/core/lib/transport/metadata.h", 
-      "src/core/lib/transport/metadata_batch.h", 
-      "src/core/lib/transport/transport.h", 
-      "src/core/lib/transport/transport_impl.h", 
-      "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
-    ], 
-    "language": "c", 
-    "name": "grpc_transport_cronet_client_secure", 
-    "src": [
-      "include/grpc/byte_buffer.h", 
-      "include/grpc/grpc.h", 
-      "include/grpc/impl/codegen/alloc.h", 
-      "include/grpc/impl/codegen/atm.h", 
-      "include/grpc/impl/codegen/atm_gcc_atomic.h", 
-      "include/grpc/impl/codegen/atm_gcc_sync.h", 
-      "include/grpc/impl/codegen/atm_win32.h", 
-      "include/grpc/impl/codegen/byte_buffer.h", 
-      "include/grpc/impl/codegen/compression_types.h", 
-      "include/grpc/impl/codegen/connectivity_state.h", 
-      "include/grpc/impl/codegen/grpc_types.h", 
-      "include/grpc/impl/codegen/log.h", 
-      "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/propagation_bits.h", 
-      "include/grpc/impl/codegen/slice.h", 
-      "include/grpc/impl/codegen/slice_buffer.h", 
-      "include/grpc/impl/codegen/status.h", 
-      "include/grpc/impl/codegen/sync.h", 
-      "include/grpc/impl/codegen/sync_generic.h", 
-      "include/grpc/impl/codegen/sync_posix.h", 
-      "include/grpc/impl/codegen/sync_win32.h", 
-      "include/grpc/impl/codegen/time.h", 
-      "include/grpc/status.h", 
-      "include/grpc/support/alloc.h", 
-      "include/grpc/support/atm.h", 
-      "include/grpc/support/host_port.h", 
-      "include/grpc/support/log.h", 
-      "include/grpc/support/port_platform.h", 
-      "include/grpc/support/slice.h", 
-      "include/grpc/support/slice_buffer.h", 
-      "include/grpc/support/string_util.h", 
-      "include/grpc/support/sync.h", 
-      "include/grpc/support/time.h", 
-      "include/grpc/support/useful.h", 
-      "src/core/ext/transport/chttp2/transport/incoming_metadata.h", 
-      "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c", 
-      "src/core/ext/transport/cronet/transport/cronet_api_dummy.c", 
-      "src/core/ext/transport/cronet/transport/cronet_transport.c", 
-      "src/core/lib/channel/channel_stack.h", 
-      "src/core/lib/channel/context.h", 
-      "src/core/lib/debug/trace.h", 
-      "src/core/lib/iomgr/closure.h", 
-      "src/core/lib/iomgr/exec_ctx.h", 
-      "src/core/lib/iomgr/pollset.h", 
-      "src/core/lib/iomgr/pollset_set.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/surface/channel.h", 
-      "src/core/lib/surface/channel_stack_type.h", 
-      "src/core/lib/transport/byte_stream.h", 
-      "src/core/lib/transport/metadata.h", 
-      "src/core/lib/transport/metadata_batch.h", 
-      "src/core/lib/transport/transport.h", 
-      "src/core/lib/transport/transport_impl.h"
-    ], 
-    "third_party": false, 
-    "type": "filegroup"
-  }, 
-  {
-    "deps": [], 
-    "headers": [
       "third_party/nanopb/pb.h", 
       "third_party/nanopb/pb_common.h", 
       "third_party/nanopb/pb_decode.h", 
diff --git a/tools/run_tests/stress_test/configs/csharp.json b/tools/run_tests/stress_test/configs/csharp.json
index 4069495..587e155 100644
--- a/tools/run_tests/stress_test/configs/csharp.json
+++ b/tools/run_tests/stress_test/configs/csharp.json
@@ -80,7 +80,7 @@
     "buildDockerImages": true,
     "pollIntervalSecs": 60,
     "testDurationSecs": 7200,
-    "kubernetesProxyPort": 8001,
+    "kubernetesProxyPort": 8009,
     "datasetIdNamePrefix": "stress_test_csharp",
     "summaryTableId": "summary",
     "qpsTableId": "qps",
diff --git a/tools/run_tests/stress_test/configs/python.json b/tools/run_tests/stress_test/configs/python.json
new file mode 100644
index 0000000..4f85de1
--- /dev/null
+++ b/tools/run_tests/stress_test/configs/python.json
@@ -0,0 +1,98 @@
+{
+  "dockerImages": {
+    "grpc_stress_python" : {
+      "buildScript": "tools/run_tests/dockerize/build_interop_stress_image.sh",
+      "dockerFileDir": "grpc_interop_stress_python"
+    }
+  },
+
+  "clientTemplates": {
+    "baseTemplates": {
+      "default": {
+        "wrapperScriptPath": "/var/local/git/grpc/tools/gcp/stress_test/run_client.py",
+        "pollIntervalSecs": 60,
+        "clientArgs": {
+          "num_channels_per_server":5,
+          "num_stubs_per_channel":10,
+          "test_cases": "empty_unary:1,large_unary:1,client_streaming:1,server_streaming:1,empty_stream:1",
+          "metrics_port": 8081
+        },
+        "metricsPort": 8081,
+        "metricsArgs": {
+          "metrics_server_address": "localhost:8081",
+          "total_only": "true"
+        },
+		"env": {
+          "PYTHONPATH": "/var/local/git/grpc/src/python/gens:/var/local/git/grpc/src/python/grpcio",
+          "LD_LIBRARY_PATH":"/var/local/git/grpc/libs/opt"
+        }
+      }
+    },
+    "templates": {
+      "python_client": {
+        "baseTemplate": "default",
+        "stressClientCmd": [
+          "python",
+          "/var/local/git/grpc/src/python/grpcio/tests/stress/client.py"
+        ],
+        "metricsClientCmd": ["/var/local/git/grpc/bins/opt/metrics_client"]
+      }
+    }
+  },
+
+  "serverTemplates": {
+    "baseTemplates":{
+      "default": {
+        "wrapperScriptPath": "/var/local/git/grpc/tools/gcp/stress_test/run_server.py",
+        "serverPort": 8080,
+        "serverArgs": {
+          "port": 8080
+        },
+        "env": {
+          "PYTHONPATH": "/var/local/git/grpc/src/python/gens:/var/local/git/grpc/src/python/grpcio",
+          "LD_LIBRARY_PATH":"/var/local/git/grpc/libs/opt"
+        }
+      }
+    },
+    "templates": {
+      "python_server": {
+        "baseTemplate": "default",
+        "stressServerCmd": [
+          "python",
+          "/var/local/git/grpc/src/python/grpcio/tests/interop/server.py"
+        ]
+      }
+    }
+  },
+
+  "testMatrix": {
+    "serverPodSpecs": {
+      "python-stress-server": {
+        "serverTemplate": "python_server",
+        "dockerImage": "grpc_stress_python",
+        "numInstances": 1
+      }
+    },
+
+    "clientPodSpecs": {
+      "python-stress-client": {
+        "clientTemplate": "python_client",
+        "dockerImage": "grpc_stress_python",
+        "numInstances": 5,
+        "serverPodSpec": "python-stress-server"
+      }
+    }
+  },
+
+  "globalSettings": {
+    "buildDockerImages": true,
+    "pollIntervalSecs": 60,
+    "testDurationSecs": 7200,
+    "kubernetesProxyPort": 8011,
+    "datasetIdNamePrefix": "stress_test_python",
+    "summaryTableId": "summary",
+    "qpsTableId": "qps",
+    "podWarmupSecs": 60
+  }
+}
+
diff --git a/tools/run_tests/stress_test/run_on_gke.py b/tools/run_tests/stress_test/run_on_gke.py
index d4f1c4a..583e583 100755
--- a/tools/run_tests/stress_test/run_on_gke.py
+++ b/tools/run_tests/stress_test/run_on_gke.py
@@ -69,7 +69,7 @@
 
   def __init__(self, name, stress_client_cmd, metrics_client_cmd, metrics_port,
                wrapper_script_path, poll_interval_secs, client_args_dict,
-               metrics_args_dict, will_run_forever):
+               metrics_args_dict, will_run_forever, env_dict):
     self.name = name
     self.stress_client_cmd = stress_client_cmd
     self.metrics_client_cmd = metrics_client_cmd
@@ -79,19 +79,21 @@
     self.client_args_dict = client_args_dict
     self.metrics_args_dict = metrics_args_dict
     self.will_run_forever = will_run_forever
+    self.env_dict = env_dict
 
 
 class ServerTemplate:
   """ Contains all the common settings used by a stress server """
 
   def __init__(self, name, server_cmd, wrapper_script_path, server_port,
-               server_args_dict, will_run_forever):
+               server_args_dict, will_run_forever, env_dict):
     self.name = name
     self.server_cmd = server_cmd
     self.wrapper_script_path = wrapper_script_path
     self.server_port = server_port
     self.server_args_dict = server_args_dict
     self.will_run_forever = will_run_forever
+    self.env_dict = env_dict
 
 
 class DockerImage:
@@ -240,6 +242,7 @@
     # server_pod_spec.template.wrapper_script_path) are are injected into the
     # container via environment variables
     server_env = self.gke_env.copy()
+    server_env.update(server_pod_spec.template.env_dict)
     server_env.update({
         'STRESS_TEST_IMAGE_TYPE': 'SERVER',
         'STRESS_TEST_CMD': server_pod_spec.template.server_cmd,
@@ -283,6 +286,7 @@
     # client_pod_spec.template.wrapper_script_path) are are injected into the
     # container via environment variables
     client_env = self.gke_env.copy()
+    client_env.update(client_pod_spec.template.env_dict)
     client_env.update({
         'STRESS_TEST_IMAGE_TYPE': 'CLIENT',
         'STRESS_TEST_CMD': client_pod_spec.template.stress_client_cmd,
@@ -425,7 +429,8 @@
           template_name, stress_client_cmd, metrics_client_cmd,
           temp_dict['metricsPort'], temp_dict['wrapperScriptPath'],
           temp_dict['pollIntervalSecs'], temp_dict['clientArgs'].copy(),
-          temp_dict['metricsArgs'].copy(), temp_dict.get('willRunForever', 1))
+          temp_dict['metricsArgs'].copy(), temp_dict.get('willRunForever', 1),
+          temp_dict.get('env', {}).copy())
 
     return client_templates_dict
 
@@ -461,7 +466,7 @@
       server_templates_dict[template_name] = ServerTemplate(
           template_name, stress_server_cmd, temp_dict['wrapperScriptPath'],
           temp_dict['serverPort'], temp_dict['serverArgs'].copy(),
-          temp_dict.get('willRunForever', 1))
+          temp_dict.get('willRunForever', 1), temp_dict.get('env', {}).copy())
 
     return server_templates_dict
 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 31e556d..581b8fd 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -2747,6 +2747,27 @@
     "flaky": false, 
     "gtest": false, 
     "language": "c", 
+    "name": "large_metadata_bad_client_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
     "name": "server_registered_method_bad_client_test", 
     "platforms": [
       "linux", 
@@ -21552,7 +21573,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21573,7 +21596,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21594,7 +21619,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21615,7 +21642,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21636,7 +21665,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21657,7 +21688,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21678,7 +21711,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21699,7 +21734,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21720,7 +21757,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21741,7 +21780,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21762,7 +21803,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21783,7 +21826,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21804,7 +21849,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21825,7 +21872,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21846,7 +21895,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21867,7 +21918,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21888,7 +21941,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21909,7 +21964,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21930,7 +21987,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21951,7 +22010,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21972,7 +22033,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -21993,7 +22056,9 @@
       "posix"
     ], 
     "cpu_cost": 0.1, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22014,7 +22079,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22035,7 +22102,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22056,7 +22125,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22077,7 +22148,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22098,7 +22171,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22119,7 +22194,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22140,7 +22217,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22161,7 +22240,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22182,7 +22263,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22203,7 +22286,9 @@
       "posix"
     ], 
     "cpu_cost": 1.0, 
-    "exclude_configs": [], 
+    "exclude_configs": [
+      "msan"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_sockpair_1byte_nosec_test", 
@@ -22963,7 +23048,137 @@
   {
     "args": [
       "--scenario_json", 
-      "'{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 4, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+      "'{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -23015,110 +23230,6 @@
   {
     "args": [
       "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 4, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_secure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_secure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_secure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
       "'{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
     ], 
     "boringssl": true, 
@@ -23145,7 +23256,137 @@
   {
     "args": [
       "--scenario_json", 
-      "'{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 4, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+      "'{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -23196,110 +23437,6 @@
   }, 
   {
     "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 4, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_insecure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_insecure"
-  }, 
-  {
-    "args": [
-      "--scenario_json", 
-      "'{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1000.0, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_insecure"
-  }, 
-  {
-    "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/00.bin"
     ], 
     "ci_platforms": [
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index bdae447..be8b5d4 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -1095,6 +1095,18 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "large_metadata_bad_client_test", "vcxproj\test\large_metadata_bad_client_test\large_metadata_bad_client_test.vcxproj", "{B706A9EC-7982-0DBC-495D-07B165F6CF56}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{BA67B418-B699-E41A-9CC4-0279C49481A5} = {BA67B418-B699-E41A-9CC4-0279C49481A5}
+		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
+		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server_registered_method_bad_client_test", "vcxproj\test\server_registered_method_bad_client_test\server_registered_method_bad_client_test.vcxproj", "{B4E7CD82-988A-BD3A-29F8-8590D3A8BC28}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -3087,6 +3099,22 @@
 		{6756895E-05BF-8CC7-58F2-868DF0C0300C}.Release-DLL|Win32.Build.0 = Release|Win32
 		{6756895E-05BF-8CC7-58F2-868DF0C0300C}.Release-DLL|x64.ActiveCfg = Release|x64
 		{6756895E-05BF-8CC7-58F2-868DF0C0300C}.Release-DLL|x64.Build.0 = Release|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug|Win32.ActiveCfg = Debug|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug|x64.ActiveCfg = Debug|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release|Win32.ActiveCfg = Release|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release|x64.ActiveCfg = Release|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug|Win32.Build.0 = Debug|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug|x64.Build.0 = Debug|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release|Win32.Build.0 = Release|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release|x64.Build.0 = Release|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Debug-DLL|x64.Build.0 = Debug|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release-DLL|Win32.Build.0 = Release|Win32
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release-DLL|x64.ActiveCfg = Release|x64
+		{B706A9EC-7982-0DBC-495D-07B165F6CF56}.Release-DLL|x64.Build.0 = Release|x64
 		{B4E7CD82-988A-BD3A-29F8-8590D3A8BC28}.Debug|Win32.ActiveCfg = Debug|Win32
 		{B4E7CD82-988A-BD3A-29F8-8590D3A8BC28}.Debug|x64.ActiveCfg = Debug|x64
 		{B4E7CD82-988A-BD3A-29F8-8590D3A8BC28}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 7f0e5a8..6a2843e 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -293,7 +293,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_win32.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\time.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_cronet.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h" />
@@ -423,44 +422,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\subchannel_call_holder.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\subchannel_index.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\uri_parser.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\alloc.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_win32.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\log.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_win32.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\time.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\alloc.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\atm.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\host_port.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\log.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\slice.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\slice_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\string_util.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\sync.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\time.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\useful.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\support\string.h" />
-    <ClInclude Include="$(SolutionDir)\..\third_party\objective_c\Cronet\cronet_c_for_grpc.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h" />
@@ -765,15 +728,9 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\insecure\channel_create.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\client\secure\cronet_channel_create.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\transport\cronet_api_dummy.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\transport\cronet_transport.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
     </ClCompile>
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index 6d1d69a..7d53be7 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -439,20 +439,11 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\insecure\channel_create.c">
       <Filter>src\core\ext\transport\chttp2\client\insecure</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\client\secure\cronet_channel_create.c">
-      <Filter>src\core\ext\transport\cronet\client\secure</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\transport\cronet_api_dummy.c">
-      <Filter>src\core\ext\transport\cronet\transport</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\cronet\transport\cronet_transport.c">
-      <Filter>src\core\ext\transport\cronet\transport</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.c">
       <Filter>src\core\ext\lb_policy\grpclb</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.c">
-      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.c">
+      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
       <Filter>third_party\nanopb</Filter>
@@ -585,9 +576,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\time.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_cronet.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security.h">
       <Filter>include\grpc</Filter>
     </ClInclude>
@@ -971,119 +959,11 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\uri_parser.h">
       <Filter>src\core\ext\client_config</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\alloc.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_sync.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_win32.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\log.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice_buffer.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_win32.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\time.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\alloc.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\atm.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\host_port.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\log.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\port_platform.h">
-      <Filter>include\grpc\support</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\slice.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
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-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\string_util.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\sync.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\time.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\useful.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\support\string.h">
-      <Filter>src\core\lib\support</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\third_party\objective_c\Cronet\cronet_c_for_grpc.h">
-      <Filter>third_party\objective_c\Cronet</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.h">
       <Filter>src\core\ext\lb_policy\grpclb</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.h">
-      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.h">
+      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h">
       <Filter>third_party\nanopb</Filter>
@@ -1130,9 +1010,6 @@
     <Filter Include="include\grpc\impl\codegen">
       <UniqueIdentifier>{def748f5-ed2a-a9bb-40d9-c31d00f0e13b}</UniqueIdentifier>
     </Filter>
-    <Filter Include="include\grpc\support">
-      <UniqueIdentifier>{31de82ea-dc6c-73fb-a640-979b8a7b240c}</UniqueIdentifier>
-    </Filter>
     <Filter Include="src">
       <UniqueIdentifier>{d538af37-07b2-062b-fa2a-d9f882cb2737}</UniqueIdentifier>
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@@ -1163,8 +1040,8 @@
     <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb">
       <UniqueIdentifier>{adf7e553-94ef-14fd-e845-03104f00a06f}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0">
-      <UniqueIdentifier>{0406d191-8817-38c3-a562-e3541201f424}</UniqueIdentifier>
+    <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1">
+      <UniqueIdentifier>{bc357e2d-8ddd-a688-88a3-255228fc0818}</UniqueIdentifier>
     </Filter>
     <Filter Include="src\core\ext\lb_policy\pick_first">
       <UniqueIdentifier>{b63ded00-b24f-708e-333f-ce199e421875}</UniqueIdentifier>
@@ -1214,18 +1091,6 @@
     <Filter Include="src\core\ext\transport\chttp2\transport">
       <UniqueIdentifier>{6f34254e-e69f-c9b4-156d-5024bade5408}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\ext\transport\cronet">
-      <UniqueIdentifier>{1e9c85e9-5522-7ef8-0017-7e19990a6194}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="src\core\ext\transport\cronet\client">
-      <UniqueIdentifier>{d0530883-75d9-b5f7-d594-26735a70ac7b}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="src\core\ext\transport\cronet\client\secure">
-      <UniqueIdentifier>{4fa6fe90-b7a8-5c8f-d629-db1e68d89eed}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="src\core\ext\transport\cronet\transport">
-      <UniqueIdentifier>{31518af8-5860-6d0d-ff78-4059fce29ec2}</UniqueIdentifier>
-    </Filter>
     <Filter Include="src\core\lib">
       <UniqueIdentifier>{5b2ded3f-84a5-f6b4-2060-286c7d1dc945}</UniqueIdentifier>
     </Filter>
@@ -1250,9 +1115,6 @@
     <Filter Include="src\core\lib\security">
       <UniqueIdentifier>{c4661d64-349f-01c1-1ba8-0602f9047595}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\lib\support">
-      <UniqueIdentifier>{27f30339-d694-40f5-db07-4b89b9aeea73}</UniqueIdentifier>
-    </Filter>
     <Filter Include="src\core\lib\surface">
       <UniqueIdentifier>{a21971fb-304f-da08-b1b2-7bd8df8ac373}</UniqueIdentifier>
     </Filter>
@@ -1271,12 +1133,6 @@
     <Filter Include="third_party\nanopb">
       <UniqueIdentifier>{93d6596d-330c-1d27-6f84-3c840e57869e}</UniqueIdentifier>
     </Filter>
-    <Filter Include="third_party\objective_c">
-      <UniqueIdentifier>{3a56a516-857e-d2aa-95cc-11685baf4e8c}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="third_party\objective_c\Cronet">
-      <UniqueIdentifier>{a165c6e3-0776-6f40-7351-d7865668e220}</UniqueIdentifier>
-    </Filter>
   </ItemGroup>
 </Project>
 
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 0eb6535..fbf26a2 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -398,7 +398,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\subchannel_index.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_config\uri_parser.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h" />
@@ -669,7 +669,7 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
     </ClCompile>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index f544fe6..2500d5c 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -388,8 +388,8 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.c">
       <Filter>src\core\ext\lb_policy\grpclb</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.c">
-      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.c">
+      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
       <Filter>third_party\nanopb</Filter>
@@ -854,8 +854,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.h">
       <Filter>src\core\ext\lb_policy\grpclb</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0\load_balancer.pb.h">
-      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.h">
+      <Filter>src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h">
       <Filter>third_party\nanopb</Filter>
@@ -932,8 +932,8 @@
     <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb">
       <UniqueIdentifier>{21858d9d-30b5-8847-5882-6b47df0fa293}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb\v0">
-      <UniqueIdentifier>{1795a20b-3e7c-e27d-eae1-96582fa9a958}</UniqueIdentifier>
+    <Filter Include="src\core\ext\lb_policy\grpclb\proto\grpc\lb\v1">
+      <UniqueIdentifier>{e9256e96-ea3d-c1fd-6426-9d53d9f08f66}</UniqueIdentifier>
     </Filter>
     <Filter Include="src\core\ext\lb_policy\pick_first">
       <UniqueIdentifier>{e27f9ecf-97bb-1a2e-3135-a41f732dcf55}</UniqueIdentifier>
diff --git a/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj b/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj
index 1509ece..91b11a1 100644
--- a/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj
+++ b/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj
@@ -160,13 +160,13 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v0\load_balancer.pb.cc">
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v1\load_balancer.pb.cc">
     </ClCompile>
-    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\lb\v0\load_balancer.pb.h">
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\lb\v1\load_balancer.pb.h">
     </ClInclude>
-    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v0\load_balancer.grpc.pb.cc">
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v1\load_balancer.grpc.pb.cc">
     </ClCompile>
-    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\lb\v0\load_balancer.grpc.pb.h">
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\lb\v1\load_balancer.grpc.pb.h">
     </ClInclude>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\grpclb\grpclb_api_test.cc">
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj.filters b/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj.filters
index 6c57b8c..50f0a3e 100644
--- a/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/grpclb_api_test/grpclb_api_test.vcxproj.filters
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v0\load_balancer.proto">
-      <Filter>src\proto\grpc\lb\v0</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\lb\v1\load_balancer.proto">
+      <Filter>src\proto\grpc\lb\v1</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\grpclb\grpclb_api_test.cc">
       <Filter>test\cpp\grpclb</Filter>
@@ -22,8 +22,8 @@
     <Filter Include="src\proto\grpc\lb">
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     </Filter>
-    <Filter Include="src\proto\grpc\lb\v0">
-      <UniqueIdentifier>{3d04774a-1c2f-e100-435e-08af5d539250}</UniqueIdentifier>
+    <Filter Include="src\proto\grpc\lb\v1">
+      <UniqueIdentifier>{6cce8ddf-d9a9-1d71-0810-d1e6f8685d76}</UniqueIdentifier>
     </Filter>
     <Filter Include="test">
       <UniqueIdentifier>{64736e1d-eb77-664f-34ab-6cf41263d3d8}</UniqueIdentifier>
diff --git a/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj b/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj
new file mode 100644
index 0000000..0a14694
--- /dev/null
+++ b/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj
@@ -0,0 +1,202 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{B706A9EC-7982-0DBC-495D-07B165F6CF56}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>large_metadata_bad_client_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>large_metadata_bad_client_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
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+    <ClCompile>
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+      <WarningLevel>Level3</WarningLevel>
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+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
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+    <Link>
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+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
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+      <SDLCheck>true</SDLCheck>
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+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
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+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
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+      <OptimizeReferences>true</OptimizeReferences>
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+  <ItemGroup>
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+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" />
+  </Target>
+</Project>
+
diff --git a/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj.filters b/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj.filters
new file mode 100644
index 0000000..5eb9a5e
--- /dev/null
+++ b/vsprojects/vcxproj/test/large_metadata_bad_client_test/large_metadata_bad_client_test.vcxproj.filters
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\bad_client\tests\large_metadata.c">
+      <Filter>test\core\bad_client\tests</Filter>
+    </ClCompile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="test">
+      <UniqueIdentifier>{6c1eb0cb-9d82-f961-7220-1f6edc913666}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core">
+      <UniqueIdentifier>{79d5006f-93a1-aa0e-2568-37aa63eef567}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core\bad_client">
+      <UniqueIdentifier>{dbde5995-24a0-2332-4bee-0540ed3aa848}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\core\bad_client\tests">
+      <UniqueIdentifier>{5cf4a13f-ae24-fd98-eb59-b5301f30367c}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
+