commit 0b1b1a5999fd52fb85face2be75e5037355a689e
author Julien Boeuf <jboeuf@google.com> Fri Jul 10 08:35:04 2015 -0700
committer Julien Boeuf <jboeuf@google.com> Fri Jul 10 08:35:04 2015 -0700
tree 82ac8317433cffd95afe437270482878812a951b
parent b037bb648884c01a12d272d9b4e528d304a4213d
parent b652fc0d172e0eb1023282fa6ee24eb41cbbea85

Merge branch 'master' of github.com:grpc/grpc into flexible_default_creds

.gitignore

diff --git a/.gitignore b/.gitignore
index 9c9ae5a..a6b34fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,8 +4,8 @@
 libs
 objs
 
-# Python virtual environment (pre-3.4 only)
-python2.7_virtual_environment
+# Python virtual environments
+python*_virtual_environment
 
 # gcov coverage data
 coverage

.travis.yml

diff --git a/.travis.yml b/.travis.yml
index 97cf99d..b6c8062 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,8 @@
   - echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
   - echo "deb http://download.mono-project.com/repo/debian wheezy-libtiff-compat main" | sudo tee -a /etc/apt/sources.list.d/mono-xamarin.list
   - sudo apt-get update -qq
-  - sudo apt-get install -qq libgtest-dev libgflags-dev python-virtualenv clang-3.5
+  - sudo apt-get install -qq libgtest-dev libgflags-dev python-virtualenv python-dev python3-dev clang-3.5
+  - sudo pip install --upgrade virtualenv
   - sudo pip install cpp-coveralls mako simplejson
   - sudo apt-get install -qq mono-devel nunit
   - wget www.nuget.org/NuGet.exe -O nuget.exe

BUILD

diff --git a/BUILD b/BUILD
index 6b186fc..13a8784 100644
--- a/BUILD
+++ b/BUILD
@@ -138,6 +138,7 @@
     "src/core/security/base64.h",
     "src/core/security/credentials.h",
     "src/core/security/json_token.h",
+    "src/core/security/jwt_verifier.h",
     "src/core/security/secure_endpoint.h",
     "src/core/security/secure_transport_setup.h",
     "src/core/security/security_connector.h",
@@ -254,6 +255,7 @@
     "src/core/security/credentials_win32.c",
     "src/core/security/google_default_credentials.c",
     "src/core/security/json_token.c",
+    "src/core/security/jwt_verifier.c",
     "src/core/security/secure_endpoint.c",
     "src/core/security/secure_transport_setup.c",
     "src/core/security/security_connector.c",
@@ -627,11 +629,15 @@
   name = "grpc++",
   srcs = [
     "src/cpp/client/secure_credentials.h",
+    "src/cpp/common/secure_auth_context.h",
     "src/cpp/server/secure_server_credentials.h",
     "src/cpp/client/channel.h",
+    "src/cpp/common/create_auth_context.h",
     "src/cpp/server/thread_pool.h",
     "src/cpp/client/secure_channel_arguments.cc",
     "src/cpp/client/secure_credentials.cc",
+    "src/cpp/common/secure_auth_context.cc",
+    "src/cpp/common/secure_create_auth_context.cc",
     "src/cpp/server/secure_server_credentials.cc",
     "src/cpp/client/channel.cc",
     "src/cpp/client/channel_arguments.cc",
@@ -661,6 +667,7 @@
   hdrs = [
     "include/grpc++/async_generic_service.h",
     "include/grpc++/async_unary_call.h",
+    "include/grpc++/auth_context.h",
     "include/grpc++/byte_buffer.h",
     "include/grpc++/channel_arguments.h",
     "include/grpc++/channel_interface.h",
@@ -713,7 +720,9 @@
   name = "grpc++_unsecure",
   srcs = [
     "src/cpp/client/channel.h",
+    "src/cpp/common/create_auth_context.h",
     "src/cpp/server/thread_pool.h",
+    "src/cpp/common/insecure_create_auth_context.cc",
     "src/cpp/client/channel.cc",
     "src/cpp/client/channel_arguments.cc",
     "src/cpp/client/client_context.cc",
@@ -742,6 +751,7 @@
   hdrs = [
     "include/grpc++/async_generic_service.h",
     "include/grpc++/async_unary_call.h",
+    "include/grpc++/auth_context.h",
     "include/grpc++/byte_buffer.h",
     "include/grpc++/channel_arguments.h",
     "include/grpc++/channel_interface.h",
@@ -946,6 +956,7 @@
     "src/core/security/credentials_win32.c",
     "src/core/security/google_default_credentials.c",
     "src/core/security/json_token.c",
+    "src/core/security/jwt_verifier.c",
     "src/core/security/secure_endpoint.c",
     "src/core/security/secure_transport_setup.c",
     "src/core/security/security_connector.c",
@@ -1083,6 +1094,7 @@
     "src/core/security/base64.h",
     "src/core/security/credentials.h",
     "src/core/security/json_token.h",
+    "src/core/security/jwt_verifier.h",
     "src/core/security/secure_endpoint.h",
     "src/core/security/secure_transport_setup.h",
     "src/core/security/security_connector.h",

Makefile

diff --git a/Makefile b/Makefile
index e7b784b..0817132 100644
--- a/Makefile
+++ b/Makefile
@@ -215,6 +215,7 @@
 endif
 INSTALL = install
 RM = rm -f
+PKG_CONFIG = pkg-config
 
 ifndef VALID_CONFIG_$(CONFIG)
 $(error Invalid CONFIG value '$(CONFIG)')
@@ -331,9 +332,9 @@
 # These are automatically computed variables.
 # There shouldn't be any need to change anything from now on.
 
-HAS_PKG_CONFIG = $(shell command -v pkg-config >/dev/null 2>&1 && echo true || echo false)
+HAS_PKG_CONFIG = $(shell command -v $(PKG_CONFIG) >/dev/null 2>&1 && echo true || echo false)
 
-PC_TEMPLATE = prefix=$(prefix)\nexec_prefix=\$${prefix}\nincludedir=\$${prefix}/include\nlibdir=\$${exec_prefix}/lib\n\nName: $(PC_NAME)\nDescription: $(PC_DESCRIPTION)\nVersion: $(VERSION)\nCflags: -I\$${includedir} $(PC_CFLAGS)\nRequires.private: $(PC_REQUIRES_PRIVATE)\nLibs: -L\$${libdir}\nLibs.private: $(PC_LIBS_PRIVATE)
+PC_TEMPLATE = prefix=$(prefix)\nexec_prefix=\$${prefix}\nincludedir=\$${prefix}/include\nlibdir=\$${exec_prefix}/lib\n\nName: $(PC_NAME)\nDescription: $(PC_DESCRIPTION)\nVersion: $(VERSION)\nCflags: -I\$${includedir} $(PC_CFLAGS)\nRequires.private: $(PC_REQUIRES_PRIVATE)\nLibs: -L\$${libdir} $(PC_LIB)\nLibs.private: $(PC_LIBS_PRIVATE)
 
 # gpr .pc file
 PC_NAME = gRPC Portable Runtime
@@ -341,7 +342,8 @@
 PC_CFLAGS = -pthread
 PC_REQUIRES_PRIVATE =
 PC_LIBS_PRIVATE = -lpthread
-ifeq ($(SYSTEM),Darwin)
+PC_LIB = -lgpr
+ifneq ($(SYSTEM),Darwin)
 PC_LIBS_PRIVATE += -lrt
 endif
 GPR_PC_FILE := $(PC_TEMPLATE)
@@ -371,10 +373,10 @@
 endif
 
 ifeq ($(HAS_PKG_CONFIG),true)
-OPENSSL_ALPN_CHECK_CMD = pkg-config --atleast-version=1.0.2 openssl
-ZLIB_CHECK_CMD = pkg-config --exists zlib
-PERFTOOLS_CHECK_CMD = pkg-config --exists profiler
-PROTOBUF_CHECK_CMD = pkg-config --atleast-version=3.0.0-alpha-3 protobuf
+OPENSSL_ALPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.2 openssl
+OPENSSL_NPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.1 openssl
+ZLIB_CHECK_CMD = $(PKG_CONFIG) --exists zlib
+PROTOBUF_CHECK_CMD = $(PKG_CONFIG) --atleast-version=3.0.0-alpha-3 protobuf
 else # HAS_PKG_CONFIG
 
 ifeq ($(SYSTEM),MINGW32)
@@ -384,16 +386,19 @@
 endif
 
 OPENSSL_ALPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/openssl-alpn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
+OPENSSL_NPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/openssl-npn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/zlib.c -lz $(LDFLAGS)
-PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/perftools.c -lprofiler $(LDFLAGS)
 PROTOBUF_CHECK_CMD = $(CXX) $(CXXFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/protobuf.cc -lprotobuf $(LDFLAGS)
 
 ifeq ($(OPENSSL_REQUIRES_DL),true)
 OPENSSL_ALPN_CHECK_CMD += -ldl
+OPENSSL_NPN_CHECK_CMD += -ldl
 endif
 
 endif # HAS_PKG_CONFIG
 
+PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/perftools.c -lprofiler $(LDFLAGS)
+
 PROTOC_CHECK_CMD = which protoc > /dev/null
 PROTOC_CHECK_VERSION_CMD = protoc --version | grep -q libprotoc.3
 DTRACE_CHECK_CMD = which dtrace > /dev/null
@@ -410,11 +415,17 @@
 HAS_SYSTEM_PROTOBUF_VERIFY = $(shell $(PROTOBUF_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN = $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_SYSTEM_OPENSSL_ALPN),true)
+HAS_SYSTEM_OPENSSL_NPN = true
+else
+HAS_SYSTEM_OPENSSL_NPN = $(shell $(OPENSSL_NPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
+endif
 HAS_SYSTEM_ZLIB = $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
 HAS_SYSTEM_PROTOBUF = $(HAS_SYSTEM_PROTOBUF_VERIFY)
 else
 # override system libraries if the config requires a custom compiled library
 HAS_SYSTEM_OPENSSL_ALPN = false
+HAS_SYSTEM_OPENSSL_NPN = false
 HAS_SYSTEM_ZLIB = false
 HAS_SYSTEM_PROTOBUF = false
 endif
@@ -438,6 +449,9 @@
 endif
 endif
 
+# Note that for testing purposes, one can do:
+#   make HAS_EMBEDDED_OPENSSL_ALPN=false
+# to emulate the fact we do not have OpenSSL in the third_party folder.
 ifeq ($(wildcard third_party/openssl/ssl/ssl.h),)
 HAS_EMBEDDED_OPENSSL_ALPN = false
 else
@@ -472,8 +486,8 @@
 endif
 else
 ifeq ($(HAS_PKG_CONFIG),true)
-CPPFLAGS += $(shell pkg-config --cflags zlib)
-LDFLAGS += $(shell pkg-config --libs-only-L zlib)
+CPPFLAGS += $(shell $(PKG_CONFIG) --cflags zlib)
+LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L zlib)
 PC_REQUIRES_GRPC += zlib
 else
 PC_LIBS_GRPC += -lz
@@ -489,11 +503,11 @@
 ifeq ($(HAS_PKG_CONFIG),true)
 OPENSSL_PKG_CONFIG = true
 PC_REQUIRES_SECURE = openssl
-CPPFLAGS := $(shell pkg-config --cflags openssl) $(CPPFLAGS)
-LDFLAGS_OPENSSL_PKG_CONFIG = $(shell pkg-config --libs-only-L openssl)
+CPPFLAGS := $(shell $(PKG_CONFIG) --cflags openssl) $(CPPFLAGS)
+LDFLAGS_OPENSSL_PKG_CONFIG = $(shell $(PKG_CONFIG) --libs-only-L openssl)
 ifeq ($(SYSTEM),Linux)
 ifneq ($(LDFLAGS_OPENSSL_PKG_CONFIG),)
-LDFLAGS_OPENSSL_PKG_CONFIG += $(shell pkg-config --libs-only-L openssl | sed s/L/Wl,-rpath,/)
+LDFLAGS_OPENSSL_PKG_CONFIG += $(shell $(PKG_CONFIG) --libs-only-L openssl | sed s/L/Wl,-rpath,/)
 endif
 endif
 LDFLAGS := $(LDFLAGS_OPENSSL_PKG_CONFIG) $(LDFLAGS)
@@ -506,6 +520,7 @@
 endif
 else
 ifeq ($(HAS_EMBEDDED_OPENSSL_ALPN),true)
+USE_SYSTEM_OPENSSL = false
 OPENSSL_DEP = $(LIBDIR)/$(CONFIG)/openssl/libssl.a
 OPENSSL_MERGE_LIBS += $(LIBDIR)/$(CONFIG)/openssl/libssl.a $(LIBDIR)/$(CONFIG)/openssl/libcrypto.a
 # need to prefix these to ensure overriding system libraries
@@ -515,12 +530,21 @@
 LIBS_SECURE = dl
 endif
 else
+ifeq ($(HAS_SYSTEM_OPENSSL_NPN),true)
+USE_SYSTEM_OPENSSL = true
+CPPFLAGS += -DTSI_OPENSSL_ALPN_SUPPORT=0
+LIBS_SECURE = $(OPENSSL_LIBS)
+ifeq ($(OPENSSL_REQUIRES_DL),true)
+LIBS_SECURE += dl
+endif
+else
 NO_SECURE = true
 endif
 endif
+endif
 
 ifeq ($(OPENSSL_PKG_CONFIG),true)
-LDLIBS_SECURE += $(shell pkg-config --libs-only-l openssl)
+LDLIBS_SECURE += $(shell $(PKG_CONFIG) --libs-only-l openssl)
 else
 LDLIBS_SECURE += $(addprefix -l, $(LIBS_SECURE))
 endif
@@ -531,6 +555,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = $(PC_REQUIRES_GRPC) $(PC_REQUIRES_SECURE)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPC) $(PC_LIBS_SECURE)
+PC_LIB = -lgrpc
 GRPC_PC_FILE := $(PC_TEMPLATE)
 
 # gprc_unsecure .pc file
@@ -539,6 +564,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = $(PC_REQUIRES_GRPC)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPC)
+PC_LIB = -lgrpc
 GRPC_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
 PROTOBUF_PKG_CONFIG = false
@@ -550,11 +576,11 @@
 ifeq ($(HAS_PKG_CONFIG),true)
 PROTOBUF_PKG_CONFIG = true
 PC_REQUIRES_GRPCXX = protobuf
-CPPFLAGS := $(shell pkg-config --cflags protobuf) $(CPPFLAGS)
-LDFLAGS_PROTOBUF_PKG_CONFIG = $(shell pkg-config --libs-only-L protobuf)
+CPPFLAGS := $(shell $(PKG_CONFIG) --cflags protobuf) $(CPPFLAGS)
+LDFLAGS_PROTOBUF_PKG_CONFIG = $(shell $(PKG_CONFIG) --libs-only-L protobuf)
 ifeq ($(SYSTEM),Linux)
 ifneq ($(LDFLAGS_PROTOBUF_PKG_CONFIG),)
-LDFLAGS_PROTOBUF_PKG_CONFIG += $(shell pkg-config --libs-only-L protobuf | sed s/L/Wl,-rpath,/)
+LDFLAGS_PROTOBUF_PKG_CONFIG += $(shell $(PKG_CONFIG) --libs-only-L protobuf | sed s/L/Wl,-rpath,/)
 endif
 endif
 else
@@ -577,7 +603,7 @@
 HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
 
 ifeq ($(PROTOBUF_PKG_CONFIG),true)
-LDLIBS_PROTOBUF += $(shell pkg-config --libs-only-l protobuf)
+LDLIBS_PROTOBUF += $(shell $(PKG_CONFIG) --libs-only-l protobuf)
 else
 LDLIBS_PROTOBUF += $(addprefix -l, $(LIBS_PROTOBUF))
 endif
@@ -588,6 +614,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = grpc $(PC_REQUIRES_GRPCXX)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPCXX)
+PC_LIB = -lgrpc++
 GRPCXX_PC_FILE := $(PC_TEMPLATE)
 
 # grpc++_unsecure .pc file
@@ -596,6 +623,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = grpc_unsecure $(PC_REQUIRES_GRPCXX)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPCXX)
+PC_LIB = -lgrpc++
 GRPCXX_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
 ifeq ($(MAKECMDGOALS),clean)
@@ -656,7 +684,7 @@
 	@echo
 	@echo "DEPENDENCY ERROR"
 	@echo
-	@echo "The target you are trying to run requires OpenSSL with ALPN support."
+	@echo "The target you are trying to run requires OpenSSL."
 	@echo "Your system doesn't have it, and neither does the third_party directory."
 	@echo
 	@echo "Please consult INSTALL to get more information."
@@ -748,9 +776,11 @@
 grpc_credentials_test: $(BINDIR)/$(CONFIG)/grpc_credentials_test
 grpc_fetch_oauth2: $(BINDIR)/$(CONFIG)/grpc_fetch_oauth2
 grpc_json_token_test: $(BINDIR)/$(CONFIG)/grpc_json_token_test
+grpc_jwt_verifier_test: $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test
 grpc_print_google_default_creds_token: $(BINDIR)/$(CONFIG)/grpc_print_google_default_creds_token
 grpc_security_connector_test: $(BINDIR)/$(CONFIG)/grpc_security_connector_test
 grpc_stream_op_test: $(BINDIR)/$(CONFIG)/grpc_stream_op_test
+grpc_verify_jwt: $(BINDIR)/$(CONFIG)/grpc_verify_jwt
 hpack_parser_test: $(BINDIR)/$(CONFIG)/hpack_parser_test
 hpack_table_test: $(BINDIR)/$(CONFIG)/hpack_table_test
 httpcli_format_request_test: $(BINDIR)/$(CONFIG)/httpcli_format_request_test
@@ -811,6 +841,7 @@
 qps_test: $(BINDIR)/$(CONFIG)/qps_test
 qps_test_openloop: $(BINDIR)/$(CONFIG)/qps_test_openloop
 qps_worker: $(BINDIR)/$(CONFIG)/qps_worker
+secure_auth_context_test: $(BINDIR)/$(CONFIG)/secure_auth_context_test
 server_crash_test: $(BINDIR)/$(CONFIG)/server_crash_test
 server_crash_test_client: $(BINDIR)/$(CONFIG)/server_crash_test_client
 status_test: $(BINDIR)/$(CONFIG)/status_test
@@ -1297,6 +1328,7 @@
 
 run_dep_checks:
 	$(OPENSSL_ALPN_CHECK_CMD) || true
+	$(OPENSSL_NPN_CHECK_CMD) || true
 	$(ZLIB_CHECK_CMD) || true
 	$(PERFTOOLS_CHECK_CMD) || true
 	$(PROTOBUF_CHECK_CMD) || true
@@ -1317,7 +1349,7 @@
 else
 ifeq ($(SYSTEM),MINGW32)
 	@echo "We currently don't have a good way to compile OpenSSL in-place under msys."
-	@echo "Please provide an ALPN-capable OpenSSL in your mingw32 system."
+	@echo "Please provide a OpenSSL in your mingw32 system."
 	@echo
 	@echo "Note that you can find a compatible version of the libraries here:"
 	@echo
@@ -1391,9 +1423,9 @@
 
 buildtests: buildtests_c buildtests_cxx
 
-buildtests_c: privatelibs_c $(BINDIR)/$(CONFIG)/alarm_heap_test $(BINDIR)/$(CONFIG)/alarm_list_test $(BINDIR)/$(CONFIG)/alarm_test $(BINDIR)/$(CONFIG)/alpn_test $(BINDIR)/$(CONFIG)/bin_encoder_test $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test $(BINDIR)/$(CONFIG)/chttp2_stream_encoder_test $(BINDIR)/$(CONFIG)/chttp2_stream_map_test $(BINDIR)/$(CONFIG)/dualstack_socket_test $(BINDIR)/$(CONFIG)/fd_conservation_posix_test $(BINDIR)/$(CONFIG)/fd_posix_test $(BINDIR)/$(CONFIG)/fling_client $(BINDIR)/$(CONFIG)/fling_server $(BINDIR)/$(CONFIG)/fling_stream_test $(BINDIR)/$(CONFIG)/fling_test $(BINDIR)/$(CONFIG)/gpr_cancellable_test $(BINDIR)/$(CONFIG)/gpr_cmdline_test $(BINDIR)/$(CONFIG)/gpr_env_test $(BINDIR)/$(CONFIG)/gpr_file_test $(BINDIR)/$(CONFIG)/gpr_histogram_test $(BINDIR)/$(CONFIG)/gpr_host_port_test $(BINDIR)/$(CONFIG)/gpr_log_test $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test $(BINDIR)/$(CONFIG)/gpr_slice_test $(BINDIR)/$(CONFIG)/gpr_string_test $(BINDIR)/$(CONFIG)/gpr_sync_test $(BINDIR)/$(CONFIG)/gpr_thd_test $(BINDIR)/$(CONFIG)/gpr_time_test $(BINDIR)/$(CONFIG)/gpr_tls_test $(BINDIR)/$(CONFIG)/gpr_useful_test $(BINDIR)/$(CONFIG)/grpc_auth_context_test $(BINDIR)/$(CONFIG)/grpc_base64_test $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test $(BINDIR)/$(CONFIG)/grpc_channel_stack_test $(BINDIR)/$(CONFIG)/grpc_completion_queue_test $(BINDIR)/$(CONFIG)/grpc_credentials_test $(BINDIR)/$(CONFIG)/grpc_json_token_test $(BINDIR)/$(CONFIG)/grpc_security_connector_test $(BINDIR)/$(CONFIG)/grpc_stream_op_test $(BINDIR)/$(CONFIG)/hpack_parser_test $(BINDIR)/$(CONFIG)/hpack_table_test $(BINDIR)/$(CONFIG)/httpcli_format_request_test $(BINDIR)/$(CONFIG)/httpcli_parser_test $(BINDIR)/$(CONFIG)/httpcli_test $(BINDIR)/$(CONFIG)/json_rewrite $(BINDIR)/$(CONFIG)/json_rewrite_test $(BINDIR)/$(CONFIG)/json_test $(BINDIR)/$(CONFIG)/lame_client_test $(BINDIR)/$(CONFIG)/message_compress_test $(BINDIR)/$(CONFIG)/multi_init_test $(BINDIR)/$(CONFIG)/multiple_server_queues_test $(BINDIR)/$(CONFIG)/murmur_hash_test $(BINDIR)/$(CONFIG)/no_server_test $(BINDIR)/$(CONFIG)/poll_kick_posix_test $(BINDIR)/$(CONFIG)/resolve_address_test $(BINDIR)/$(CONFIG)/secure_endpoint_test $(BINDIR)/$(CONFIG)/sockaddr_utils_test $(BINDIR)/$(CONFIG)/tcp_client_posix_test $(BINDIR)/$(CONFIG)/tcp_posix_test $(BINDIR)/$(CONFIG)/tcp_server_posix_test $(BINDIR)/$(CONFIG)/time_averaged_stats_test $(BINDIR)/$(CONFIG)/time_test $(BINDIR)/$(CONFIG)/timeout_encoding_test $(BINDIR)/$(CONFIG)/timers_test $(BINDIR)/$(CONFIG)/transport_metadata_test $(BINDIR)/$(CONFIG)/transport_security_test $(BINDIR)/$(CONFIG)/uri_parser_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test 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$(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/connection_prefix_bad_client_test $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
 
-buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/qps_test_openloop $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_pool_test $(BINDIR)/$(CONFIG)/thread_stress_test
+buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/qps_test_openloop $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_pool_test $(BINDIR)/$(CONFIG)/thread_stress_test
 
 test: test_c test_cxx
 
@@ -1470,6 +1502,8 @@
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_credentials_test || ( echo test grpc_credentials_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_json_token_test"
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_json_token_test || ( echo test grpc_json_token_test failed ; exit 1 )
+	$(E) "[RUN]     Testing grpc_jwt_verifier_test"
+	$(Q) $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test || ( echo test grpc_jwt_verifier_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_security_connector_test"
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_security_connector_test || ( echo test grpc_security_connector_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_stream_op_test"
@@ -2518,6 +2552,8 @@
 	$(Q) $(BINDIR)/$(CONFIG)/qps_test || ( echo test qps_test failed ; exit 1 )
 	$(E) "[RUN]     Testing qps_test_openloop"
 	$(Q) $(BINDIR)/$(CONFIG)/qps_test_openloop || ( echo test qps_test_openloop failed ; exit 1 )
+	$(E) "[RUN]     Testing secure_auth_context_test"
+	$(Q) $(BINDIR)/$(CONFIG)/secure_auth_context_test || ( echo test secure_auth_context_test failed ; exit 1 )
 	$(E) "[RUN]     Testing server_crash_test"
 	$(Q) $(BINDIR)/$(CONFIG)/server_crash_test || ( echo test server_crash_test failed ; exit 1 )
 	$(E) "[RUN]     Testing status_test"
@@ -2543,7 +2579,7 @@
 tools: tools_c tools_cxx
 
 
-tools_c: privatelibs_c $(BINDIR)/$(CONFIG)/gen_hpack_tables $(BINDIR)/$(CONFIG)/grpc_create_jwt $(BINDIR)/$(CONFIG)/grpc_fetch_oauth2 $(BINDIR)/$(CONFIG)/grpc_print_google_default_creds_token
+tools_c: privatelibs_c $(BINDIR)/$(CONFIG)/gen_hpack_tables $(BINDIR)/$(CONFIG)/grpc_create_jwt $(BINDIR)/$(CONFIG)/grpc_fetch_oauth2 $(BINDIR)/$(CONFIG)/grpc_print_google_default_creds_token $(BINDIR)/$(CONFIG)/grpc_verify_jwt
 
 tools_cxx: privatelibs_cxx
 
@@ -3184,6 +3220,7 @@
     src/core/security/credentials_win32.c \
     src/core/security/google_default_credentials.c \
     src/core/security/json_token.c \
+    src/core/security/jwt_verifier.c \
     src/core/security/secure_endpoint.c \
     src/core/security/secure_transport_setup.c \
     src/core/security/security_connector.c \
@@ -3318,7 +3355,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc.a: openssl_dep_error
 
@@ -3394,7 +3431,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a: openssl_dep_error
 
@@ -3612,6 +3649,8 @@
 LIBGRPC++_SRC = \
     src/cpp/client/secure_channel_arguments.cc \
     src/cpp/client/secure_credentials.cc \
+    src/cpp/common/secure_auth_context.cc \
+    src/cpp/common/secure_create_auth_context.cc \
     src/cpp/server/secure_server_credentials.cc \
     src/cpp/client/channel.cc \
     src/cpp/client/channel_arguments.cc \
@@ -3641,6 +3680,7 @@
 PUBLIC_HEADERS_CXX += \
     include/grpc++/async_generic_service.h \
     include/grpc++/async_unary_call.h \
+    include/grpc++/auth_context.h \
     include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
@@ -3681,7 +3721,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc++.a: openssl_dep_error
 
@@ -3755,7 +3795,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a: openssl_dep_error
 
@@ -3808,7 +3848,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a: openssl_dep_error
 
@@ -3852,6 +3892,7 @@
 
 
 LIBGRPC++_UNSECURE_SRC = \
+    src/cpp/common/insecure_create_auth_context.cc \
     src/cpp/client/channel.cc \
     src/cpp/client/channel_arguments.cc \
     src/cpp/client/client_context.cc \
@@ -3880,6 +3921,7 @@
 PUBLIC_HEADERS_CXX += \
     include/grpc++/async_generic_service.h \
     include/grpc++/async_unary_call.h \
+    include/grpc++/auth_context.h \
     include/grpc++/byte_buffer.h \
     include/grpc++/channel_arguments.h \
     include/grpc++/channel_interface.h \
@@ -4014,7 +4056,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a: openssl_dep_error
 
@@ -4065,7 +4107,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libinterop_client_main.a: openssl_dep_error
 
@@ -4114,7 +4156,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a: openssl_dep_error
 
@@ -4164,7 +4206,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libinterop_server_main.a: openssl_dep_error
 
@@ -4216,7 +4258,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libpubsub_client_lib.a: openssl_dep_error
 
@@ -4276,7 +4318,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libqps.a: openssl_dep_error
 
@@ -4333,7 +4375,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a: openssl_dep_error
 
@@ -4392,7 +4434,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a: openssl_dep_error
 
@@ -4498,7 +4540,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a: openssl_dep_error
 
@@ -4535,7 +4577,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack_with_poll.a: openssl_dep_error
 
@@ -4572,7 +4614,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a: openssl_dep_error
 
@@ -5161,7 +5203,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_test_request_response_with_payload_and_call_creds.a: openssl_dep_error
 
@@ -5384,7 +5426,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libend2end_certs.a: openssl_dep_error
 
@@ -5421,7 +5463,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/libbad_client_test.a: openssl_dep_error
 
@@ -5460,7 +5502,7 @@
 ALARM_HEAP_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ALARM_HEAP_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/alarm_heap_test: openssl_dep_error
 
@@ -5489,7 +5531,7 @@
 ALARM_LIST_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ALARM_LIST_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/alarm_list_test: openssl_dep_error
 
@@ -5518,7 +5560,7 @@
 ALARM_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ALARM_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/alarm_test: openssl_dep_error
 
@@ -5547,7 +5589,7 @@
 ALPN_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ALPN_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/alpn_test: openssl_dep_error
 
@@ -5576,7 +5618,7 @@
 BIN_ENCODER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(BIN_ENCODER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/bin_encoder_test: openssl_dep_error
 
@@ -5605,7 +5647,7 @@
 CHTTP2_STATUS_CONVERSION_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_STATUS_CONVERSION_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test: openssl_dep_error
 
@@ -5634,7 +5676,7 @@
 CHTTP2_STREAM_ENCODER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_STREAM_ENCODER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_stream_encoder_test: openssl_dep_error
 
@@ -5663,7 +5705,7 @@
 CHTTP2_STREAM_MAP_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_STREAM_MAP_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_stream_map_test: openssl_dep_error
 
@@ -5692,7 +5734,7 @@
 DUALSTACK_SOCKET_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(DUALSTACK_SOCKET_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/dualstack_socket_test: openssl_dep_error
 
@@ -5721,7 +5763,7 @@
 FD_CONSERVATION_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FD_CONSERVATION_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fd_conservation_posix_test: openssl_dep_error
 
@@ -5750,7 +5792,7 @@
 FD_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FD_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fd_posix_test: openssl_dep_error
 
@@ -5779,7 +5821,7 @@
 FLING_CLIENT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FLING_CLIENT_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fling_client: openssl_dep_error
 
@@ -5808,7 +5850,7 @@
 FLING_SERVER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FLING_SERVER_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fling_server: openssl_dep_error
 
@@ -5837,7 +5879,7 @@
 FLING_STREAM_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FLING_STREAM_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fling_stream_test: openssl_dep_error
 
@@ -5866,7 +5908,7 @@
 FLING_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FLING_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/fling_test: openssl_dep_error
 
@@ -5895,7 +5937,7 @@
 GEN_HPACK_TABLES_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GEN_HPACK_TABLES_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gen_hpack_tables: openssl_dep_error
 
@@ -5924,7 +5966,7 @@
 GPR_CANCELLABLE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_CANCELLABLE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_cancellable_test: openssl_dep_error
 
@@ -5953,7 +5995,7 @@
 GPR_CMDLINE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_CMDLINE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_cmdline_test: openssl_dep_error
 
@@ -5982,7 +6024,7 @@
 GPR_ENV_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_ENV_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_env_test: openssl_dep_error
 
@@ -6011,7 +6053,7 @@
 GPR_FILE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_FILE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_file_test: openssl_dep_error
 
@@ -6040,7 +6082,7 @@
 GPR_HISTOGRAM_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_HISTOGRAM_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_histogram_test: openssl_dep_error
 
@@ -6069,7 +6111,7 @@
 GPR_HOST_PORT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_HOST_PORT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_host_port_test: openssl_dep_error
 
@@ -6098,7 +6140,7 @@
 GPR_LOG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_LOG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_log_test: openssl_dep_error
 
@@ -6127,7 +6169,7 @@
 GPR_SLICE_BUFFER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_SLICE_BUFFER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test: openssl_dep_error
 
@@ -6156,7 +6198,7 @@
 GPR_SLICE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_SLICE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_slice_test: openssl_dep_error
 
@@ -6185,7 +6227,7 @@
 GPR_STRING_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_STRING_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_string_test: openssl_dep_error
 
@@ -6214,7 +6256,7 @@
 GPR_SYNC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_SYNC_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_sync_test: openssl_dep_error
 
@@ -6243,7 +6285,7 @@
 GPR_THD_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_THD_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_thd_test: openssl_dep_error
 
@@ -6272,7 +6314,7 @@
 GPR_TIME_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_TIME_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_time_test: openssl_dep_error
 
@@ -6301,7 +6343,7 @@
 GPR_TLS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_TLS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_tls_test: openssl_dep_error
 
@@ -6330,7 +6372,7 @@
 GPR_USEFUL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_USEFUL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/gpr_useful_test: openssl_dep_error
 
@@ -6359,7 +6401,7 @@
 GRPC_AUTH_CONTEXT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_AUTH_CONTEXT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_auth_context_test: openssl_dep_error
 
@@ -6388,7 +6430,7 @@
 GRPC_BASE64_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_BASE64_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_base64_test: openssl_dep_error
 
@@ -6417,7 +6459,7 @@
 GRPC_BYTE_BUFFER_READER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_BYTE_BUFFER_READER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test: openssl_dep_error
 
@@ -6446,7 +6488,7 @@
 GRPC_CHANNEL_STACK_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_CHANNEL_STACK_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_channel_stack_test: openssl_dep_error
 
@@ -6475,7 +6517,7 @@
 GRPC_COMPLETION_QUEUE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_COMPLETION_QUEUE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_completion_queue_test: openssl_dep_error
 
@@ -6504,7 +6546,7 @@
 GRPC_CREATE_JWT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_CREATE_JWT_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_create_jwt: openssl_dep_error
 
@@ -6533,7 +6575,7 @@
 GRPC_CREDENTIALS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_CREDENTIALS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_credentials_test: openssl_dep_error
 
@@ -6562,7 +6604,7 @@
 GRPC_FETCH_OAUTH2_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_FETCH_OAUTH2_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_fetch_oauth2: openssl_dep_error
 
@@ -6591,7 +6633,7 @@
 GRPC_JSON_TOKEN_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_JSON_TOKEN_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_json_token_test: openssl_dep_error
 
@@ -6614,13 +6656,42 @@
 endif
 
 
+GRPC_JWT_VERIFIER_TEST_SRC = \
+    test/core/security/jwt_verifier_test.c \
+
+GRPC_JWT_VERIFIER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_JWT_VERIFIER_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test: openssl_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test: $(GRPC_JWT_VERIFIER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(GRPC_JWT_VERIFIER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/security/jwt_verifier_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_grpc_jwt_verifier_test: $(GRPC_JWT_VERIFIER_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(GRPC_JWT_VERIFIER_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 GRPC_PRINT_GOOGLE_DEFAULT_CREDS_TOKEN_SRC = \
     test/core/security/print_google_default_creds_token.c \
 
 GRPC_PRINT_GOOGLE_DEFAULT_CREDS_TOKEN_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_PRINT_GOOGLE_DEFAULT_CREDS_TOKEN_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_print_google_default_creds_token: openssl_dep_error
 
@@ -6649,7 +6720,7 @@
 GRPC_SECURITY_CONNECTOR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_SECURITY_CONNECTOR_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_security_connector_test: openssl_dep_error
 
@@ -6678,7 +6749,7 @@
 GRPC_STREAM_OP_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_STREAM_OP_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_stream_op_test: openssl_dep_error
 
@@ -6701,13 +6772,42 @@
 endif
 
 
+GRPC_VERIFY_JWT_SRC = \
+    test/core/security/verify_jwt.c \
+
+GRPC_VERIFY_JWT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_VERIFY_JWT_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/grpc_verify_jwt: openssl_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/grpc_verify_jwt: $(GRPC_VERIFY_JWT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(GRPC_VERIFY_JWT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/grpc_verify_jwt
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/security/verify_jwt.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_grpc_verify_jwt: $(GRPC_VERIFY_JWT_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(GRPC_VERIFY_JWT_OBJS:.o=.dep)
+endif
+endif
+
+
 HPACK_PARSER_TEST_SRC = \
     test/core/transport/chttp2/hpack_parser_test.c \
 
 HPACK_PARSER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HPACK_PARSER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/hpack_parser_test: openssl_dep_error
 
@@ -6736,7 +6836,7 @@
 HPACK_TABLE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HPACK_TABLE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/hpack_table_test: openssl_dep_error
 
@@ -6765,7 +6865,7 @@
 HTTPCLI_FORMAT_REQUEST_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HTTPCLI_FORMAT_REQUEST_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/httpcli_format_request_test: openssl_dep_error
 
@@ -6794,7 +6894,7 @@
 HTTPCLI_PARSER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HTTPCLI_PARSER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/httpcli_parser_test: openssl_dep_error
 
@@ -6823,7 +6923,7 @@
 HTTPCLI_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HTTPCLI_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/httpcli_test: openssl_dep_error
 
@@ -6852,7 +6952,7 @@
 JSON_REWRITE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(JSON_REWRITE_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/json_rewrite: openssl_dep_error
 
@@ -6881,7 +6981,7 @@
 JSON_REWRITE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(JSON_REWRITE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/json_rewrite_test: openssl_dep_error
 
@@ -6910,7 +7010,7 @@
 JSON_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(JSON_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/json_test: openssl_dep_error
 
@@ -6939,7 +7039,7 @@
 LAME_CLIENT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LAME_CLIENT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/lame_client_test: openssl_dep_error
 
@@ -6968,7 +7068,7 @@
 LOW_LEVEL_PING_PONG_BENCHMARK_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LOW_LEVEL_PING_PONG_BENCHMARK_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/low_level_ping_pong_benchmark: openssl_dep_error
 
@@ -6997,7 +7097,7 @@
 MESSAGE_COMPRESS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MESSAGE_COMPRESS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/message_compress_test: openssl_dep_error
 
@@ -7026,7 +7126,7 @@
 MULTI_INIT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MULTI_INIT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/multi_init_test: openssl_dep_error
 
@@ -7055,7 +7155,7 @@
 MULTIPLE_SERVER_QUEUES_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MULTIPLE_SERVER_QUEUES_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/multiple_server_queues_test: openssl_dep_error
 
@@ -7084,7 +7184,7 @@
 MURMUR_HASH_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MURMUR_HASH_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/murmur_hash_test: openssl_dep_error
 
@@ -7113,7 +7213,7 @@
 NO_SERVER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(NO_SERVER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/no_server_test: openssl_dep_error
 
@@ -7142,7 +7242,7 @@
 POLL_KICK_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(POLL_KICK_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/poll_kick_posix_test: openssl_dep_error
 
@@ -7171,7 +7271,7 @@
 RESOLVE_ADDRESS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(RESOLVE_ADDRESS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/resolve_address_test: openssl_dep_error
 
@@ -7200,7 +7300,7 @@
 SECURE_ENDPOINT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SECURE_ENDPOINT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/secure_endpoint_test: openssl_dep_error
 
@@ -7229,7 +7329,7 @@
 SOCKADDR_UTILS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SOCKADDR_UTILS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/sockaddr_utils_test: openssl_dep_error
 
@@ -7258,7 +7358,7 @@
 TCP_CLIENT_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TCP_CLIENT_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/tcp_client_posix_test: openssl_dep_error
 
@@ -7287,7 +7387,7 @@
 TCP_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TCP_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/tcp_posix_test: openssl_dep_error
 
@@ -7316,7 +7416,7 @@
 TCP_SERVER_POSIX_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TCP_SERVER_POSIX_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/tcp_server_posix_test: openssl_dep_error
 
@@ -7345,7 +7445,7 @@
 TIME_AVERAGED_STATS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TIME_AVERAGED_STATS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/time_averaged_stats_test: openssl_dep_error
 
@@ -7374,7 +7474,7 @@
 TIME_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TIME_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/time_test: openssl_dep_error
 
@@ -7403,7 +7503,7 @@
 TIMEOUT_ENCODING_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TIMEOUT_ENCODING_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/timeout_encoding_test: openssl_dep_error
 
@@ -7432,7 +7532,7 @@
 TIMERS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TIMERS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/timers_test: openssl_dep_error
 
@@ -7461,7 +7561,7 @@
 TRANSPORT_METADATA_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TRANSPORT_METADATA_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/transport_metadata_test: openssl_dep_error
 
@@ -7490,7 +7590,7 @@
 TRANSPORT_SECURITY_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(TRANSPORT_SECURITY_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/transport_security_test: openssl_dep_error
 
@@ -7519,7 +7619,7 @@
 URI_PARSER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(URI_PARSER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/uri_parser_test: openssl_dep_error
 
@@ -7548,7 +7648,7 @@
 ASYNC_END2END_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ASYNC_END2END_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/async_end2end_test: openssl_dep_error
 
@@ -7588,7 +7688,7 @@
 ASYNC_STREAMING_PING_PONG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ASYNC_STREAMING_PING_PONG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test: openssl_dep_error
 
@@ -7628,7 +7728,7 @@
 ASYNC_UNARY_PING_PONG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ASYNC_UNARY_PING_PONG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test: openssl_dep_error
 
@@ -7668,7 +7768,7 @@
 CHANNEL_ARGUMENTS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CHANNEL_ARGUMENTS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/channel_arguments_test: openssl_dep_error
 
@@ -7708,7 +7808,7 @@
 CLI_CALL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CLI_CALL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/cli_call_test: openssl_dep_error
 
@@ -7748,7 +7848,7 @@
 CLIENT_CRASH_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CLIENT_CRASH_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/client_crash_test: openssl_dep_error
 
@@ -7788,7 +7888,7 @@
 CLIENT_CRASH_TEST_SERVER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CLIENT_CRASH_TEST_SERVER_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/client_crash_test_server: openssl_dep_error
 
@@ -7828,7 +7928,7 @@
 CREDENTIALS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CREDENTIALS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/credentials_test: openssl_dep_error
 
@@ -7868,7 +7968,7 @@
 CXX_BYTE_BUFFER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CXX_BYTE_BUFFER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test: openssl_dep_error
 
@@ -7908,7 +8008,7 @@
 CXX_SLICE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CXX_SLICE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/cxx_slice_test: openssl_dep_error
 
@@ -7948,7 +8048,7 @@
 CXX_TIME_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CXX_TIME_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/cxx_time_test: openssl_dep_error
 
@@ -7988,7 +8088,7 @@
 END2END_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(END2END_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/end2end_test: openssl_dep_error
 
@@ -8028,7 +8128,7 @@
 GENERIC_END2END_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GENERIC_END2END_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/generic_end2end_test: openssl_dep_error
 
@@ -8068,7 +8168,7 @@
 GRPC_CLI_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_CLI_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/grpc_cli: openssl_dep_error
 
@@ -8244,7 +8344,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/interop_client: openssl_dep_error
 
@@ -8273,7 +8373,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/interop_server: openssl_dep_error
 
@@ -8306,7 +8406,7 @@
 INTEROP_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(INTEROP_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/interop_test: openssl_dep_error
 
@@ -8346,7 +8446,7 @@
 MOCK_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MOCK_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/mock_test: openssl_dep_error
 
@@ -8386,7 +8486,7 @@
 PUBSUB_CLIENT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(PUBSUB_CLIENT_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/pubsub_client: openssl_dep_error
 
@@ -8426,7 +8526,7 @@
 PUBSUB_PUBLISHER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(PUBSUB_PUBLISHER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/pubsub_publisher_test: openssl_dep_error
 
@@ -8466,7 +8566,7 @@
 PUBSUB_SUBSCRIBER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(PUBSUB_SUBSCRIBER_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/pubsub_subscriber_test: openssl_dep_error
 
@@ -8506,7 +8606,7 @@
 QPS_DRIVER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(QPS_DRIVER_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/qps_driver: openssl_dep_error
 
@@ -8546,7 +8646,7 @@
 QPS_INTERARRIVAL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(QPS_INTERARRIVAL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/qps_interarrival_test: openssl_dep_error
 
@@ -8586,7 +8686,7 @@
 QPS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(QPS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/qps_test: openssl_dep_error
 
@@ -8626,7 +8726,7 @@
 QPS_TEST_OPENLOOP_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(QPS_TEST_OPENLOOP_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/qps_test_openloop: openssl_dep_error
 
@@ -8666,7 +8766,7 @@
 QPS_WORKER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(QPS_WORKER_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/qps_worker: openssl_dep_error
 
@@ -8700,13 +8800,53 @@
 endif
 
 
+SECURE_AUTH_CONTEXT_TEST_SRC = \
+    test/cpp/common/secure_auth_context_test.cc \
+
+SECURE_AUTH_CONTEXT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SECURE_AUTH_CONTEXT_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/secure_auth_context_test: openssl_dep_error
+
+else
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/secure_auth_context_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/secure_auth_context_test: $(PROTOBUF_DEP) $(SECURE_AUTH_CONTEXT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(SECURE_AUTH_CONTEXT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/secure_auth_context_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/common/secure_auth_context_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_secure_auth_context_test: $(SECURE_AUTH_CONTEXT_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(SECURE_AUTH_CONTEXT_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 SERVER_CRASH_TEST_SRC = \
     test/cpp/end2end/server_crash_test.cc \
 
 SERVER_CRASH_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SERVER_CRASH_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/server_crash_test: openssl_dep_error
 
@@ -8746,7 +8886,7 @@
 SERVER_CRASH_TEST_CLIENT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SERVER_CRASH_TEST_CLIENT_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/server_crash_test_client: openssl_dep_error
 
@@ -8786,7 +8926,7 @@
 STATUS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(STATUS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/status_test: openssl_dep_error
 
@@ -8826,7 +8966,7 @@
 SYNC_STREAMING_PING_PONG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SYNC_STREAMING_PING_PONG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test: openssl_dep_error
 
@@ -8866,7 +9006,7 @@
 SYNC_UNARY_PING_PONG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SYNC_UNARY_PING_PONG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test: openssl_dep_error
 
@@ -8906,7 +9046,7 @@
 THREAD_POOL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(THREAD_POOL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/thread_pool_test: openssl_dep_error
 
@@ -8946,7 +9086,7 @@
 THREAD_STRESS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(THREAD_STRESS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/thread_stress_test: openssl_dep_error
 
@@ -8982,7 +9122,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test: openssl_dep_error
 
@@ -9000,7 +9140,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test: openssl_dep_error
 
@@ -9018,7 +9158,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -9036,7 +9176,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test: openssl_dep_error
 
@@ -9054,7 +9194,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test: openssl_dep_error
 
@@ -9072,7 +9212,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -9090,7 +9230,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_census_simple_request_test: openssl_dep_error
 
@@ -9108,7 +9248,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_disappearing_server_test: openssl_dep_error
 
@@ -9126,7 +9266,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -9144,7 +9284,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -9162,7 +9302,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_empty_batch_test: openssl_dep_error
 
@@ -9180,7 +9320,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test: openssl_dep_error
 
@@ -9198,7 +9338,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_invoke_large_request_test: openssl_dep_error
 
@@ -9216,7 +9356,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test: openssl_dep_error
 
@@ -9234,7 +9374,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_message_length_test: openssl_dep_error
 
@@ -9252,7 +9392,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_no_op_test: openssl_dep_error
 
@@ -9270,7 +9410,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test: openssl_dep_error
 
@@ -9288,7 +9428,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_registered_call_test: openssl_dep_error
 
@@ -9306,7 +9446,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -9324,7 +9464,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -9342,7 +9482,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test: openssl_dep_error
 
@@ -9360,7 +9500,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -9378,7 +9518,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -9396,7 +9536,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_flags_test: openssl_dep_error
 
@@ -9414,7 +9554,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test: openssl_dep_error
 
@@ -9432,7 +9572,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_payload_test: openssl_dep_error
 
@@ -9450,7 +9590,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_server_finishes_request_test: openssl_dep_error
 
@@ -9468,7 +9608,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test: openssl_dep_error
 
@@ -9486,7 +9626,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_test: openssl_dep_error
 
@@ -9504,7 +9644,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -9522,7 +9662,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_bad_hostname_test: openssl_dep_error
 
@@ -9540,7 +9680,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test: openssl_dep_error
 
@@ -9558,7 +9698,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -9576,7 +9716,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_test: openssl_dep_error
 
@@ -9594,7 +9734,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_test: openssl_dep_error
 
@@ -9612,7 +9752,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -9630,7 +9770,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_census_simple_request_test: openssl_dep_error
 
@@ -9648,7 +9788,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_disappearing_server_test: openssl_dep_error
 
@@ -9666,7 +9806,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -9684,7 +9824,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -9702,7 +9842,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_empty_batch_test: openssl_dep_error
 
@@ -9720,7 +9860,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test: openssl_dep_error
 
@@ -9738,7 +9878,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_invoke_large_request_test: openssl_dep_error
 
@@ -9756,7 +9896,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test: openssl_dep_error
 
@@ -9774,7 +9914,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_message_length_test: openssl_dep_error
 
@@ -9792,7 +9932,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_no_op_test: openssl_dep_error
 
@@ -9810,7 +9950,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_test: openssl_dep_error
 
@@ -9828,7 +9968,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_registered_call_test: openssl_dep_error
 
@@ -9846,7 +9986,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -9864,7 +10004,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -9882,7 +10022,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_test: openssl_dep_error
 
@@ -9900,7 +10040,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -9918,7 +10058,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -9936,7 +10076,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_flags_test: openssl_dep_error
 
@@ -9954,7 +10094,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_test: openssl_dep_error
 
@@ -9972,7 +10112,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_payload_test: openssl_dep_error
 
@@ -9990,7 +10130,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_server_finishes_request_test: openssl_dep_error
 
@@ -10008,7 +10148,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_delayed_request_test: openssl_dep_error
 
@@ -10026,7 +10166,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_test: openssl_dep_error
 
@@ -10044,7 +10184,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -10062,7 +10202,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_test: openssl_dep_error
 
@@ -10080,7 +10220,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_test: openssl_dep_error
 
@@ -10098,7 +10238,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -10116,7 +10256,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_test: openssl_dep_error
 
@@ -10134,7 +10274,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_test: openssl_dep_error
 
@@ -10152,7 +10292,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -10170,7 +10310,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_test: openssl_dep_error
 
@@ -10188,7 +10328,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_test: openssl_dep_error
 
@@ -10206,7 +10346,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -10224,7 +10364,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -10242,7 +10382,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_test: openssl_dep_error
 
@@ -10260,7 +10400,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_test: openssl_dep_error
 
@@ -10278,7 +10418,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_test: openssl_dep_error
 
@@ -10296,7 +10436,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_test: openssl_dep_error
 
@@ -10314,7 +10454,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_test: openssl_dep_error
 
@@ -10332,7 +10472,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_test: openssl_dep_error
 
@@ -10350,7 +10490,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_test: openssl_dep_error
 
@@ -10368,7 +10508,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_test: openssl_dep_error
 
@@ -10386,7 +10526,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -10404,7 +10544,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -10422,7 +10562,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_test: openssl_dep_error
 
@@ -10440,7 +10580,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -10458,7 +10598,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -10476,7 +10616,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_test: openssl_dep_error
 
@@ -10494,7 +10634,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_test: openssl_dep_error
 
@@ -10512,7 +10652,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_test: openssl_dep_error
 
@@ -10530,7 +10670,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_test: openssl_dep_error
 
@@ -10548,7 +10688,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_test: openssl_dep_error
 
@@ -10566,7 +10706,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_test: openssl_dep_error
 
@@ -10584,7 +10724,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -10602,7 +10742,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_test: openssl_dep_error
 
@@ -10620,7 +10760,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_test: openssl_dep_error
 
@@ -10638,7 +10778,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -10656,7 +10796,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_test: openssl_dep_error
 
@@ -10674,7 +10814,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_test: openssl_dep_error
 
@@ -10692,7 +10832,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -10710,7 +10850,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_test: openssl_dep_error
 
@@ -10728,7 +10868,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_test: openssl_dep_error
 
@@ -10746,7 +10886,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -10764,7 +10904,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -10782,7 +10922,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_test: openssl_dep_error
 
@@ -10800,7 +10940,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_test: openssl_dep_error
 
@@ -10818,7 +10958,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_test: openssl_dep_error
 
@@ -10836,7 +10976,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_concurrent_streams_test: openssl_dep_error
 
@@ -10854,7 +10994,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_message_length_test: openssl_dep_error
 
@@ -10872,7 +11012,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_no_op_test: openssl_dep_error
 
@@ -10890,7 +11030,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_ping_pong_streaming_test: openssl_dep_error
 
@@ -10908,7 +11048,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_registered_call_test: openssl_dep_error
 
@@ -10926,7 +11066,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -10944,7 +11084,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -10962,7 +11102,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_test: openssl_dep_error
 
@@ -10980,7 +11120,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -10998,7 +11138,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -11016,7 +11156,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_flags_test: openssl_dep_error
 
@@ -11034,7 +11174,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_large_metadata_test: openssl_dep_error
 
@@ -11052,7 +11192,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_payload_test: openssl_dep_error
 
@@ -11070,7 +11210,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_server_finishes_request_test: openssl_dep_error
 
@@ -11088,7 +11228,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_delayed_request_test: openssl_dep_error
 
@@ -11106,7 +11246,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_test: openssl_dep_error
 
@@ -11124,7 +11264,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -11142,7 +11282,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_bad_hostname_test: openssl_dep_error
 
@@ -11160,7 +11300,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_test: openssl_dep_error
 
@@ -11178,7 +11318,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -11196,7 +11336,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_invoke_test: openssl_dep_error
 
@@ -11214,7 +11354,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_before_invoke_test: openssl_dep_error
 
@@ -11232,7 +11372,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -11250,7 +11390,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_census_simple_request_test: openssl_dep_error
 
@@ -11268,7 +11408,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_test: openssl_dep_error
 
@@ -11286,7 +11426,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -11304,7 +11444,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -11322,7 +11462,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test: openssl_dep_error
 
@@ -11340,7 +11480,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_test: openssl_dep_error
 
@@ -11358,7 +11498,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_test: openssl_dep_error
 
@@ -11376,7 +11516,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_test: openssl_dep_error
 
@@ -11394,7 +11534,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_max_message_length_test: openssl_dep_error
 
@@ -11412,7 +11552,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_no_op_test: openssl_dep_error
 
@@ -11430,7 +11570,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_ping_pong_streaming_test: openssl_dep_error
 
@@ -11448,7 +11588,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_registered_call_test: openssl_dep_error
 
@@ -11466,7 +11606,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -11484,7 +11624,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -11502,7 +11642,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_test: openssl_dep_error
 
@@ -11520,7 +11660,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -11538,7 +11678,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -11556,7 +11696,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_flags_test: openssl_dep_error
 
@@ -11574,7 +11714,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_large_metadata_test: openssl_dep_error
 
@@ -11592,7 +11732,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_payload_test: openssl_dep_error
 
@@ -11610,7 +11750,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_server_finishes_request_test: openssl_dep_error
 
@@ -11628,7 +11768,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_delayed_request_test: openssl_dep_error
 
@@ -11646,7 +11786,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_test: openssl_dep_error
 
@@ -11664,7 +11804,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -11682,7 +11822,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_bad_hostname_test: openssl_dep_error
 
@@ -11700,7 +11840,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_cancel_after_accept_test: openssl_dep_error
 
@@ -11718,7 +11858,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -11736,7 +11876,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_cancel_after_invoke_test: openssl_dep_error
 
@@ -11754,7 +11894,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_cancel_before_invoke_test: openssl_dep_error
 
@@ -11772,7 +11912,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -11790,7 +11930,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_census_simple_request_test: openssl_dep_error
 
@@ -11808,7 +11948,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_disappearing_server_test: openssl_dep_error
 
@@ -11826,7 +11966,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -11844,7 +11984,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -11862,7 +12002,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_empty_batch_test: openssl_dep_error
 
@@ -11880,7 +12020,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_graceful_server_shutdown_test: openssl_dep_error
 
@@ -11898,7 +12038,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_invoke_large_request_test: openssl_dep_error
 
@@ -11916,7 +12056,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_max_concurrent_streams_test: openssl_dep_error
 
@@ -11934,7 +12074,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_max_message_length_test: openssl_dep_error
 
@@ -11952,7 +12092,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_no_op_test: openssl_dep_error
 
@@ -11970,7 +12110,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_ping_pong_streaming_test: openssl_dep_error
 
@@ -11988,7 +12128,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_registered_call_test: openssl_dep_error
 
@@ -12006,7 +12146,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -12024,7 +12164,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -12042,7 +12182,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_response_with_payload_test: openssl_dep_error
 
@@ -12060,7 +12200,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -12078,7 +12218,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -12096,7 +12236,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_with_flags_test: openssl_dep_error
 
@@ -12114,7 +12254,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_with_large_metadata_test: openssl_dep_error
 
@@ -12132,7 +12272,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_request_with_payload_test: openssl_dep_error
 
@@ -12150,7 +12290,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_server_finishes_request_test: openssl_dep_error
 
@@ -12168,7 +12308,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_simple_delayed_request_test: openssl_dep_error
 
@@ -12186,7 +12326,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_simple_request_test: openssl_dep_error
 
@@ -12204,7 +12344,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -12222,7 +12362,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test: openssl_dep_error
 
@@ -12240,7 +12380,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test: openssl_dep_error
 
@@ -12258,7 +12398,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -12276,7 +12416,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test: openssl_dep_error
 
@@ -12294,7 +12434,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test: openssl_dep_error
 
@@ -12312,7 +12452,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -12330,7 +12470,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test: openssl_dep_error
 
@@ -12348,7 +12488,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test: openssl_dep_error
 
@@ -12366,7 +12506,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -12384,7 +12524,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -12402,7 +12542,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test: openssl_dep_error
 
@@ -12420,7 +12560,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test: openssl_dep_error
 
@@ -12438,7 +12578,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test: openssl_dep_error
 
@@ -12456,7 +12596,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test: openssl_dep_error
 
@@ -12474,7 +12614,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test: openssl_dep_error
 
@@ -12492,7 +12632,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_no_op_test: openssl_dep_error
 
@@ -12510,7 +12650,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test: openssl_dep_error
 
@@ -12528,7 +12668,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test: openssl_dep_error
 
@@ -12546,7 +12686,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -12564,7 +12704,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -12582,7 +12722,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test: openssl_dep_error
 
@@ -12600,7 +12740,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -12618,7 +12758,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -12636,7 +12776,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test: openssl_dep_error
 
@@ -12654,7 +12794,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test: openssl_dep_error
 
@@ -12672,7 +12812,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test: openssl_dep_error
 
@@ -12690,7 +12830,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test: openssl_dep_error
 
@@ -12708,7 +12848,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test: openssl_dep_error
 
@@ -12726,7 +12866,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test: openssl_dep_error
 
@@ -12744,7 +12884,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -12762,7 +12902,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_bad_hostname_test: openssl_dep_error
 
@@ -12780,7 +12920,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_test: openssl_dep_error
 
@@ -12798,7 +12938,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -12816,7 +12956,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_test: openssl_dep_error
 
@@ -12834,7 +12974,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_test: openssl_dep_error
 
@@ -12852,7 +12992,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -12870,7 +13010,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_census_simple_request_test: openssl_dep_error
 
@@ -12888,7 +13028,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_disappearing_server_test: openssl_dep_error
 
@@ -12906,7 +13046,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -12924,7 +13064,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -12942,7 +13082,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_empty_batch_test: openssl_dep_error
 
@@ -12960,7 +13100,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_test: openssl_dep_error
 
@@ -12978,7 +13118,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_invoke_large_request_test: openssl_dep_error
 
@@ -12996,7 +13136,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_test: openssl_dep_error
 
@@ -13014,7 +13154,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_message_length_test: openssl_dep_error
 
@@ -13032,7 +13172,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_no_op_test: openssl_dep_error
 
@@ -13050,7 +13190,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_test: openssl_dep_error
 
@@ -13068,7 +13208,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_registered_call_test: openssl_dep_error
 
@@ -13086,7 +13226,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -13104,7 +13244,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -13122,7 +13262,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_test: openssl_dep_error
 
@@ -13140,7 +13280,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -13158,7 +13298,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -13176,7 +13316,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_flags_test: openssl_dep_error
 
@@ -13194,7 +13334,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_test: openssl_dep_error
 
@@ -13212,7 +13352,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_payload_test: openssl_dep_error
 
@@ -13230,7 +13370,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_server_finishes_request_test: openssl_dep_error
 
@@ -13248,7 +13388,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_delayed_request_test: openssl_dep_error
 
@@ -13266,7 +13406,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_test: openssl_dep_error
 
@@ -13284,7 +13424,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -13302,7 +13442,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test: openssl_dep_error
 
@@ -13320,7 +13460,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test: openssl_dep_error
 
@@ -13338,7 +13478,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -13356,7 +13496,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test: openssl_dep_error
 
@@ -13374,7 +13514,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test: openssl_dep_error
 
@@ -13392,7 +13532,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -13410,7 +13550,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test: openssl_dep_error
 
@@ -13428,7 +13568,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test: openssl_dep_error
 
@@ -13446,7 +13586,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -13464,7 +13604,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -13482,7 +13622,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test: openssl_dep_error
 
@@ -13500,7 +13640,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test: openssl_dep_error
 
@@ -13518,7 +13658,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test: openssl_dep_error
 
@@ -13536,7 +13676,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test: openssl_dep_error
 
@@ -13554,7 +13694,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_message_length_test: openssl_dep_error
 
@@ -13572,7 +13712,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_test: openssl_dep_error
 
@@ -13590,7 +13730,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test: openssl_dep_error
 
@@ -13608,7 +13748,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_registered_call_test: openssl_dep_error
 
@@ -13626,7 +13766,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -13644,7 +13784,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -13662,7 +13802,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test: openssl_dep_error
 
@@ -13680,7 +13820,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -13698,7 +13838,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -13716,7 +13856,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test: openssl_dep_error
 
@@ -13734,7 +13874,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test: openssl_dep_error
 
@@ -13752,7 +13892,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test: openssl_dep_error
 
@@ -13770,7 +13910,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test: openssl_dep_error
 
@@ -13788,7 +13928,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test: openssl_dep_error
 
@@ -13806,7 +13946,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_test: openssl_dep_error
 
@@ -13824,7 +13964,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -13842,7 +13982,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_bad_hostname_test: openssl_dep_error
 
@@ -13860,7 +14000,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test: openssl_dep_error
 
@@ -13878,7 +14018,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test: openssl_dep_error
 
@@ -13896,7 +14036,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test: openssl_dep_error
 
@@ -13914,7 +14054,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test: openssl_dep_error
 
@@ -13932,7 +14072,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test: openssl_dep_error
 
@@ -13950,7 +14090,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_census_simple_request_test: openssl_dep_error
 
@@ -13968,7 +14108,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_disappearing_server_test: openssl_dep_error
 
@@ -13986,7 +14126,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test: openssl_dep_error
 
@@ -14004,7 +14144,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test: openssl_dep_error
 
@@ -14022,7 +14162,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_empty_batch_test: openssl_dep_error
 
@@ -14040,7 +14180,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test: openssl_dep_error
 
@@ -14058,7 +14198,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_invoke_large_request_test: openssl_dep_error
 
@@ -14076,7 +14216,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test: openssl_dep_error
 
@@ -14094,7 +14234,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_message_length_test: openssl_dep_error
 
@@ -14112,7 +14252,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_no_op_test: openssl_dep_error
 
@@ -14130,7 +14270,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test: openssl_dep_error
 
@@ -14148,7 +14288,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_registered_call_test: openssl_dep_error
 
@@ -14166,7 +14306,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test: openssl_dep_error
 
@@ -14184,7 +14324,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test: openssl_dep_error
 
@@ -14202,7 +14342,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test: openssl_dep_error
 
@@ -14220,7 +14360,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test: openssl_dep_error
 
@@ -14238,7 +14378,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test: openssl_dep_error
 
@@ -14256,7 +14396,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_flags_test: openssl_dep_error
 
@@ -14274,7 +14414,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test: openssl_dep_error
 
@@ -14292,7 +14432,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_payload_test: openssl_dep_error
 
@@ -14310,7 +14450,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_server_finishes_request_test: openssl_dep_error
 
@@ -14328,7 +14468,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_delayed_request_test: openssl_dep_error
 
@@ -14346,7 +14486,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_test: openssl_dep_error
 
@@ -14364,7 +14504,7 @@
 
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test: openssl_dep_error
 
@@ -15826,6 +15966,7 @@
 src/core/security/credentials_win32.c: $(OPENSSL_DEP)
 src/core/security/google_default_credentials.c: $(OPENSSL_DEP)
 src/core/security/json_token.c: $(OPENSSL_DEP)
+src/core/security/jwt_verifier.c: $(OPENSSL_DEP)
 src/core/security/secure_endpoint.c: $(OPENSSL_DEP)
 src/core/security/secure_transport_setup.c: $(OPENSSL_DEP)
 src/core/security/security_connector.c: $(OPENSSL_DEP)

build.json

diff --git a/build.json b/build.json
index 19078ed..7d2242b 100644
--- a/build.json
+++ b/build.json
@@ -30,6 +30,7 @@
       "public_headers": [
         "include/grpc++/async_generic_service.h",
         "include/grpc++/async_unary_call.h",
+        "include/grpc++/auth_context.h",
         "include/grpc++/byte_buffer.h",
         "include/grpc++/channel_arguments.h",
         "include/grpc++/channel_interface.h",
@@ -68,6 +69,7 @@
       ],
       "headers": [
         "src/cpp/client/channel.h",
+        "src/cpp/common/create_auth_context.h",
         "src/cpp/server/thread_pool.h"
       ],
       "src": [
@@ -451,6 +453,7 @@
         "src/core/security/base64.h",
         "src/core/security/credentials.h",
         "src/core/security/json_token.h",
+        "src/core/security/jwt_verifier.h",
         "src/core/security/secure_endpoint.h",
         "src/core/security/secure_transport_setup.h",
         "src/core/security/security_connector.h",
@@ -473,6 +476,7 @@
         "src/core/security/credentials_win32.c",
         "src/core/security/google_default_credentials.c",
         "src/core/security/json_token.c",
+        "src/core/security/jwt_verifier.c",
         "src/core/security/secure_endpoint.c",
         "src/core/security/secure_transport_setup.c",
         "src/core/security/security_connector.c",
@@ -557,11 +561,14 @@
       "language": "c++",
       "headers": [
         "src/cpp/client/secure_credentials.h",
+        "src/cpp/common/secure_auth_context.h",
         "src/cpp/server/secure_server_credentials.h"
       ],
       "src": [
         "src/cpp/client/secure_channel_arguments.cc",
         "src/cpp/client/secure_credentials.cc",
+        "src/cpp/common/secure_auth_context.cc",
+        "src/cpp/common/secure_create_auth_context.cc",
         "src/cpp/server/secure_server_credentials.cc"
       ],
       "deps": [
@@ -614,6 +621,9 @@
       "name": "grpc++_unsecure",
       "build": "all",
       "language": "c++",
+      "src": [
+        "src/cpp/common/insecure_create_auth_context.cc"
+      ],
       "deps": [
         "gpr",
         "grpc_unsecure"
@@ -1357,6 +1367,20 @@
       ]
     },
     {
+      "name": "grpc_jwt_verifier_test",
+      "build": "test",
+      "language": "c",
+      "src": [
+        "test/core/security/jwt_verifier_test.c"
+      ],
+      "deps": [
+        "grpc_test_util",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
+    {
       "name": "grpc_print_google_default_creds_token",
       "build": "tool",
       "language": "c",
@@ -1399,6 +1423,20 @@
       ]
     },
     {
+      "name": "grpc_verify_jwt",
+      "build": "tool",
+      "language": "c",
+      "src": [
+        "test/core/security/verify_jwt.c"
+      ],
+      "deps": [
+        "grpc_test_util",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
+    {
       "name": "hpack_parser_test",
       "build": "test",
       "language": "c",
@@ -2314,6 +2352,19 @@
       ]
     },
     {
+      "name": "secure_auth_context_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "test/cpp/common/secure_auth_context_test.cc"
+      ],
+      "deps": [
+        "grpc++",
+        "grpc",
+        "gpr"
+      ]
+    },
+    {
       "name": "server_crash_test",
       "build": "test",
       "language": "c++",

doc/interop-test-descriptions.md

diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index c3da843..c1b3394 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -392,6 +392,50 @@
 * clients are free to assert that the response payload body contents are zero
   and comparing the entire response message against a golden response
 
+### oauth2_auth_token
+
+Similar to the other auth tests, this test is only for cloud-to-prod path.
+
+This test verifies unary calls succeed in sending messages using an OAuth2 token that is obtained OOB.  For the purpose of the test, the OAuth2 token is actually obtained from the service account credentials via the language-specific authorization library.  
+
+The difference between this test and the other auth tests is that rather than configuring the test client with ServiceAccountCredentials directly, the test first uses the authorization library to obtain an authorization token.
+
+The test
+- uses the flag`--service_account_key_file` with the path to a json key file
+downloaded from https://console.developers.google.com. Alternately, if using a usable auth implementation, it may specify the file location in the environment variable GOOGLE_APPLICATION_CREDENTIALS
+- uses the flag `--oauth_scope` for the oauth scope.  For testing against grpc-test.sandbox.google.com, "https://www.googleapis.com/auth/xapi.zoo" should be passed as the `--oauth_scope`.
+
+Server features:
+* [UnaryCall][]
+* [Compressable Payload][]
+* [Echo Authenticated Username][]
+* [Echo OAuth Scope][]
+
+Procedure:
+ 1. Client use the auth library to obtain an authorization token
+ 2. Client calls UnaryCall, attaching the authorization token obtained in step1, with the following message
+
+    ```
+    {
+      response_type: COMPRESSABLE
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+      fill_username: true
+      fill_oauth_scope: true
+    }
+    ```
+    
+Asserts:
+* call was successful
+* received SimpleResponse.username is in the json key file used by the auth library to obtain the authorization token
+* received SimpleResponse.oauth_scope is in `--oauth_scope`
+* response payload body is 314159 bytes in size
+* clients are free to assert that the response payload body contents are zero
+  and comparing the entire response message against a golden response
+
+
 ### Metadata (TODO: fix name)
 
 Status: Not yet implementable
@@ -560,11 +604,6 @@
 
 Multiple thousand simultaneous calls on same Channel (ctiller)
 
-OAuth2 tokens + Service Credentials from GCE metadata server (GCE->prod only)
-(abhishek)
-
-OAuth2 tokens + JWT signing key (GCE->prod only) (abhishek)
-
 Metadata: client headers, server headers + trailers, binary+ascii
 
 #### Normal priority:

gRPC.podspec

diff --git a/gRPC.podspec b/gRPC.podspec
index bdcbc3f..921a4ab 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -140,6 +140,7 @@
                       'src/core/security/base64.h',
                       'src/core/security/credentials.h',
                       'src/core/security/json_token.h',
+                      'src/core/security/jwt_verifier.h',
                       'src/core/security/secure_endpoint.h',
                       'src/core/security/secure_transport_setup.h',
                       'src/core/security/security_connector.h',
@@ -263,6 +264,7 @@
                       'src/core/security/credentials_win32.c',
                       'src/core/security/google_default_credentials.c',
                       'src/core/security/json_token.c',
+                      'src/core/security/jwt_verifier.c',
                       'src/core/security/secure_endpoint.c',
                       'src/core/security/secure_transport_setup.c',
                       'src/core/security/security_connector.c',
@@ -398,6 +400,7 @@
                               'src/core/security/base64.h',
                               'src/core/security/credentials.h',
                               'src/core/security/json_token.h',
+                              'src/core/security/jwt_verifier.h',
                               'src/core/security/secure_endpoint.h',
                               'src/core/security/secure_transport_setup.h',
                               'src/core/security/security_connector.h',

include/grpc++/auth_context.h

diff --git a/include/grpc++/auth_context.h b/include/grpc++/auth_context.h
new file mode 100644
index 0000000..158f8e3
--- /dev/null
+++ b/include/grpc++/auth_context.h
@@ -0,0 +1,62 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPCXX_AUTH_CONTEXT_H
+#define GRPCXX_AUTH_CONTEXT_H
+
+#include <vector>
+
+#include <grpc++/config.h>
+
+namespace grpc {
+
+class AuthContext {
+ public:
+  typedef std::pair<grpc::string, grpc::string> Property;
+
+  virtual ~AuthContext() {}
+
+  // A peer identity, in general is one or more properties (in which case they
+  // have the same name).
+  virtual std::vector<grpc::string> GetPeerIdentity() const = 0;
+  virtual grpc::string GetPeerIdentityPropertyName() const = 0;
+
+  // Returns all the property values with the given name.
+  virtual std::vector<grpc::string> FindPropertyValues(
+      const grpc::string& name) const = 0;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_AUTH_CONTEXT_H
+

include/grpc++/client_context.h

diff --git a/include/grpc++/client_context.h b/include/grpc++/client_context.h
index 5e10875..7adaaa6 100644
--- a/include/grpc++/client_context.h
+++ b/include/grpc++/client_context.h
@@ -40,12 +40,14 @@
 
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
+#include <grpc++/auth_context.h>
 #include <grpc++/config.h>
 #include <grpc++/status.h>
 #include <grpc++/time.h>
 
 struct grpc_call;
 struct grpc_completion_queue;
+struct census_context;
 
 namespace grpc {
 
@@ -107,6 +109,12 @@
     creds_ = creds;
   }
 
+  std::shared_ptr<const AuthContext> auth_context() const;
+
+  // Get and set census context
+  void set_census_context(census_context* ccp) { census_context_ = ccp; }
+  census_context* get_census_context() const { return census_context_; }
+
   void TryCancel();
 
  private:
@@ -154,6 +162,8 @@
   gpr_timespec deadline_;
   grpc::string authority_;
   std::shared_ptr<Credentials> creds_;
+  mutable std::shared_ptr<const AuthContext> auth_context_;
+  census_context* census_context_;
   std::multimap<grpc::string, grpc::string> send_initial_metadata_;
   std::multimap<grpc::string, grpc::string> recv_initial_metadata_;
   std::multimap<grpc::string, grpc::string> trailing_metadata_;

include/grpc++/credentials.h

diff --git a/include/grpc++/credentials.h b/include/grpc++/credentials.h
index 7a40cd1..0eaaefc 100644
--- a/include/grpc++/credentials.h
+++ b/include/grpc++/credentials.h
@@ -120,6 +120,12 @@
 std::shared_ptr<Credentials> RefreshTokenCredentials(
     const grpc::string& json_refresh_token);
 
+// Builds access token credentials.
+// access_token is an oauth2 access token that was fetched using an out of band
+// mechanism.
+std::shared_ptr<Credentials> AccessTokenCredentials(
+    const grpc::string& access_token);
+
 // Builds IAM credentials.
 std::shared_ptr<Credentials> IAMCredentials(
     const grpc::string& authorization_token,

include/grpc++/server.h

diff --git a/include/grpc++/server.h b/include/grpc++/server.h
index 6a9e757..94ee0b6 100644
--- a/include/grpc++/server.h
+++ b/include/grpc++/server.h
@@ -84,8 +84,8 @@
          int max_message_size);
   // Register a service. This call does not take ownership of the service.
   // The service must exist for the lifetime of the Server instance.
-  bool RegisterService(RpcService* service);
-  bool RegisterAsyncService(AsynchronousService* service);
+  bool RegisterService(const grpc::string *host, RpcService* service);
+  bool RegisterAsyncService(const grpc::string *host, AsynchronousService* service);
   void RegisterAsyncGenericService(AsyncGenericService* service);
   // Add a listening port. Can be called multiple times.
   int AddListeningPort(const grpc::string& addr, ServerCredentials* creds);

include/grpc++/server_builder.h

diff --git a/include/grpc++/server_builder.h b/include/grpc++/server_builder.h
index ecee475..44ee00e 100644
--- a/include/grpc++/server_builder.h
+++ b/include/grpc++/server_builder.h
@@ -58,17 +58,35 @@
   // Register a service. This call does not take ownership of the service.
   // The service must exist for the lifetime of the Server instance returned by
   // BuildAndStart().
+  // Matches requests with any :authority
   void RegisterService(SynchronousService* service);
 
-  // Register an asynchronous service. New calls will be delevered to cq.
+  // Register an asynchronous service.
   // This call does not take ownership of the service or completion queue.
   // The service and completion queuemust exist for the lifetime of the Server
   // instance returned by BuildAndStart().
+  // Matches requests with any :authority
   void RegisterAsyncService(AsynchronousService* service);
 
   // Register a generic service.
+  // Matches requests with any :authority
   void RegisterAsyncGenericService(AsyncGenericService* service);
 
+  // Register a service. This call does not take ownership of the service.
+  // The service must exist for the lifetime of the Server instance returned by
+  // BuildAndStart().
+  // Only matches requests with :authority \a host
+  void RegisterService(const grpc::string& host, 
+                       SynchronousService* service);
+
+  // Register an asynchronous service.
+  // This call does not take ownership of the service or completion queue.
+  // The service and completion queuemust exist for the lifetime of the Server
+  // instance returned by BuildAndStart().
+  // Only matches requests with :authority \a host
+  void RegisterAsyncService(const grpc::string& host, 
+                            AsynchronousService* service);
+
   // Set max message size in bytes.
   void SetMaxMessageSize(int max_message_size) {
     max_message_size_ = max_message_size;
@@ -98,9 +116,18 @@
     int* selected_port;
   };
 
+  typedef std::unique_ptr<grpc::string> HostString;
+  template <class T> struct NamedService {
+    explicit NamedService(T* s) : service(s) {}
+    NamedService(const grpc::string& h, T *s)
+        : host(new grpc::string(h)), service(s) {}
+    HostString host;
+    T* service;
+  };
+
   int max_message_size_;
-  std::vector<RpcService*> services_;
-  std::vector<AsynchronousService*> async_services_;
+  std::vector<std::unique_ptr<NamedService<RpcService>>> services_;
+  std::vector<std::unique_ptr<NamedService<AsynchronousService>>> async_services_;
   std::vector<Port> ports_;
   std::vector<ServerCompletionQueue*> cqs_;
   std::shared_ptr<ServerCredentials> creds_;

include/grpc++/server_context.h

diff --git a/include/grpc++/server_context.h b/include/grpc++/server_context.h
index 326b6a1..a4ee986 100644
--- a/include/grpc++/server_context.h
+++ b/include/grpc++/server_context.h
@@ -35,8 +35,10 @@
 #define GRPCXX_SERVER_CONTEXT_H
 
 #include <map>
+#include <memory>
 
 #include <grpc/support/time.h>
+#include <grpc++/auth_context.h>
 #include <grpc++/config.h>
 #include <grpc++/time.h>
 
@@ -97,6 +99,10 @@
     return client_metadata_;
   }
 
+  std::shared_ptr<const AuthContext> auth_context() const {
+    return auth_context_;
+  }
+
  private:
   friend class ::grpc::Server;
   template <class W, class R>
@@ -133,12 +139,15 @@
   ServerContext(gpr_timespec deadline, grpc_metadata* metadata,
                 size_t metadata_count);
 
+  void set_call(grpc_call* call);
+
   CompletionOp* completion_op_;
 
   gpr_timespec deadline_;
   grpc_call* call_;
   CompletionQueue* cq_;
   bool sent_initial_metadata_;
+  std::shared_ptr<const AuthContext> auth_context_;
   std::multimap<grpc::string, grpc::string> client_metadata_;
   std::multimap<grpc::string, grpc::string> initial_metadata_;
   std::multimap<grpc::string, grpc::string> trailing_metadata_;

include/grpc/census.h

diff --git a/include/grpc/census.h b/include/grpc/census.h
index b2049b3..3fc07af 100644
--- a/include/grpc/census.h
+++ b/include/grpc/census.h
@@ -61,6 +61,10 @@
 int census_initialize(int functions);
 void census_shutdown();
 
+/* If any census feature has been initialized, this funtion will return a
+ * non-zero value. */
+int census_available();
+
 /* Internally, Census relies on a context, which should be propagated across
  * RPC's. From the RPC subsystems viewpoint, this is an opaque data structure.
  * A context must be used as the first argument to all other census

include/grpc/grpc_security.h

diff --git a/include/grpc/grpc_security.h b/include/grpc/grpc_security.h
index 1ea229e..37d66c0 100644
--- a/include/grpc/grpc_security.h
+++ b/include/grpc/grpc_security.h
@@ -131,13 +131,18 @@
 grpc_credentials *grpc_refresh_token_credentials_create(
     const char *json_refresh_token);
 
-/* Creates a fake transport security credentials object for testing. */
-grpc_credentials *grpc_fake_transport_security_credentials_create(void);
+/* Creates an Oauth2 Access Token credentials with an access token that was
+   aquired by an out of band mechanism. */
+grpc_credentials *grpc_access_token_credentials_create(
+    const char *access_token);
 
 /* Creates an IAM credentials object. */
 grpc_credentials *grpc_iam_credentials_create(const char *authorization_token,
                                               const char *authority_selector);
 
+/* Creates a fake transport security credentials object for testing. */
+grpc_credentials *grpc_fake_transport_security_credentials_create(void);
+
 /* --- Secure channel creation. --- */
 
 /* The caller of the secure_channel_create functions may override the target
@@ -248,8 +253,12 @@
 /* Returns 1 if the peer is authenticated, 0 otherwise. */
 int grpc_auth_context_peer_is_authenticated(const grpc_auth_context *ctx);
 
-/* Gets the auth context from the call. */
-const grpc_auth_context *grpc_call_auth_context(grpc_call *call);
+/* Gets the auth context from the call. Caller needs to call
+   grpc_auth_context_release on the returned context. */
+grpc_auth_context *grpc_call_auth_context(grpc_call *call);
+
+/* Releases the auth context returned from grpc_call_auth_context. */
+void grpc_auth_context_release(grpc_auth_context *context);
 
 #ifdef __cplusplus
 }

src/core/census/grpc_context.c

diff --git a/src/core/census/grpc_context.c b/src/core/census/grpc_context.c
index cf23531..0ed6346 100644
--- a/src/core/census/grpc_context.c
+++ b/src/core/census/grpc_context.c
@@ -34,12 +34,28 @@
 #include <grpc/census.h>
 #include "src/core/census/grpc_context.h"
 
-void *grpc_census_context_create() {
-  census_context *context;
-  census_context_deserialize(NULL, &context);
-  return (void *)context;
+static void grpc_census_context_destroy(void *context) {
+  census_context_destroy((census_context *)context);
 }
 
-void grpc_census_context_destroy(void *context) {
-  census_context_destroy((census_context *)context);
+void grpc_census_call_set_context(grpc_call *call, census_context *context) {
+  if (!census_available()) {
+    return;
+  }
+  if (context == NULL) {
+    if (grpc_call_is_client(call)) {
+      census_context *context_ptr;
+      census_context_deserialize(NULL, &context_ptr);
+      grpc_call_context_set(call, GRPC_CONTEXT_TRACING, context_ptr,
+                            grpc_census_context_destroy);
+    } else {
+      /* TODO(aveitch): server side context code to be implemented. */
+    }
+  } else {
+    grpc_call_context_set(call, GRPC_CONTEXT_TRACING, context, NULL);
+  }
+}
+
+census_context *grpc_census_call_get_context(grpc_call *call) {
+  return (census_context *)grpc_call_context_get(call, GRPC_CONTEXT_TRACING);
 }

src/core/census/grpc_context.h

diff --git a/src/core/census/grpc_context.h b/src/core/census/grpc_context.h
index f610f6c..4637e72 100644
--- a/src/core/census/grpc_context.h
+++ b/src/core/census/grpc_context.h
@@ -36,7 +36,22 @@
 #ifndef CENSUS_GRPC_CONTEXT_H
 #define CENSUS_GRPC_CONTEXT_H
 
-void *grpc_census_context_create();
-void grpc_census_context_destroy(void *context);
+#include <grpc/census.h>
+#include "src/core/surface/call.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Set census context for the call; Must be called before first call to
+   grpc_call_start_batch(). */
+void grpc_census_call_set_context(grpc_call *call, census_context *context);
+
+/* Retrieve the calls current census context. */
+census_context *grpc_census_call_get_context(grpc_call *call);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* CENSUS_GRPC_CONTEXT_H */

src/core/census/initialize.c

diff --git a/src/core/census/initialize.c b/src/core/census/initialize.c
index 057ac78..8016520 100644
--- a/src/core/census/initialize.c
+++ b/src/core/census/initialize.c
@@ -48,3 +48,5 @@
 }
 
 void census_shutdown() { census_fns_enabled = CENSUS_NONE; }
+
+int census_available() { return (census_fns_enabled != CENSUS_NONE); }

src/core/channel/census_filter.c

diff --git a/src/core/channel/census_filter.c b/src/core/channel/census_filter.c
index 83b7682..43ef5fb 100644
--- a/src/core/channel/census_filter.c
+++ b/src/core/channel/census_filter.c
@@ -197,7 +197,7 @@
   channel_data* chand = elem->channel_data;
   GPR_ASSERT(chand != NULL);
   if (chand->path_str != NULL) {
-    grpc_mdstr_unref(chand->path_str);
+    GRPC_MDSTR_UNREF(chand->path_str);
   }
 }
 

src/core/channel/client_channel.c

diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index 871e970..f890f99 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -427,7 +427,7 @@
     GRPC_RESOLVER_REF(resolver, "channel-next");
     gpr_mu_unlock(&chand->mu_config);
     GRPC_CHANNEL_INTERNAL_REF(chand->master, "resolver");
-    grpc_resolver_next(chand->resolver, &chand->incoming_configuration,
+    grpc_resolver_next(resolver, &chand->incoming_configuration,
                        &chand->on_config_changed);
     GRPC_RESOLVER_UNREF(resolver, "channel-next");
   } else {

src/core/channel/http_client_filter.c

diff --git a/src/core/channel/http_client_filter.c b/src/core/channel/http_client_filter.c
index 581eb13..63e4912 100644
--- a/src/core/channel/http_client_filter.c
+++ b/src/core/channel/http_client_filter.c
@@ -108,13 +108,13 @@
       /* Send : prefixed headers, which have to be before any application
          layer headers. */
       grpc_metadata_batch_add_head(&op->data.metadata, &calld->method,
-                                   grpc_mdelem_ref(channeld->method));
+                                   GRPC_MDELEM_REF(channeld->method));
       grpc_metadata_batch_add_head(&op->data.metadata, &calld->scheme,
-                                   grpc_mdelem_ref(channeld->scheme));
+                                   GRPC_MDELEM_REF(channeld->scheme));
       grpc_metadata_batch_add_tail(&op->data.metadata, &calld->te_trailers,
-                                   grpc_mdelem_ref(channeld->te_trailers));
+                                   GRPC_MDELEM_REF(channeld->te_trailers));
       grpc_metadata_batch_add_tail(&op->data.metadata, &calld->content_type,
-                                   grpc_mdelem_ref(channeld->content_type));
+                                   GRPC_MDELEM_REF(channeld->content_type));
       break;
     }
   }
@@ -196,11 +196,11 @@
   /* grab pointers to our data from the channel element */
   channel_data *channeld = elem->channel_data;
 
-  grpc_mdelem_unref(channeld->te_trailers);
-  grpc_mdelem_unref(channeld->method);
-  grpc_mdelem_unref(channeld->scheme);
-  grpc_mdelem_unref(channeld->content_type);
-  grpc_mdelem_unref(channeld->status);
+  GRPC_MDELEM_UNREF(channeld->te_trailers);
+  GRPC_MDELEM_UNREF(channeld->method);
+  GRPC_MDELEM_UNREF(channeld->scheme);
+  GRPC_MDELEM_UNREF(channeld->content_type);
+  GRPC_MDELEM_UNREF(channeld->status);
 }
 
 const grpc_channel_filter grpc_http_client_filter = {

src/core/channel/http_server_filter.c

diff --git a/src/core/channel/http_server_filter.c b/src/core/channel/http_server_filter.c
index db0bf59..a6cbb5a 100644
--- a/src/core/channel/http_server_filter.c
+++ b/src/core/channel/http_server_filter.c
@@ -129,9 +129,9 @@
     /* translate host to :authority since :authority may be
        omitted */
     grpc_mdelem *authority = grpc_mdelem_from_metadata_strings(
-        channeld->mdctx, grpc_mdstr_ref(channeld->authority_key),
-        grpc_mdstr_ref(md->value));
-    grpc_mdelem_unref(md);
+        channeld->mdctx, GRPC_MDSTR_REF(channeld->authority_key),
+        GRPC_MDSTR_REF(md->value));
+    GRPC_MDELEM_UNREF(md);
     return authority;
   } else {
     return md;
@@ -193,7 +193,7 @@
       if (op->type != GRPC_OP_METADATA) continue;
       calld->sent_status = 1;
       grpc_metadata_batch_add_head(&op->data.metadata, &calld->status,
-                                   grpc_mdelem_ref(channeld->status_ok));
+                                   GRPC_MDELEM_REF(channeld->status_ok));
       break;
     }
   }
@@ -264,17 +264,17 @@
   /* grab pointers to our data from the channel element */
   channel_data *channeld = elem->channel_data;
 
-  grpc_mdelem_unref(channeld->te_trailers);
-  grpc_mdelem_unref(channeld->status_ok);
-  grpc_mdelem_unref(channeld->status_not_found);
-  grpc_mdelem_unref(channeld->method_post);
-  grpc_mdelem_unref(channeld->http_scheme);
-  grpc_mdelem_unref(channeld->https_scheme);
-  grpc_mdelem_unref(channeld->grpc_scheme);
-  grpc_mdelem_unref(channeld->content_type);
-  grpc_mdstr_unref(channeld->path_key);
-  grpc_mdstr_unref(channeld->authority_key);
-  grpc_mdstr_unref(channeld->host_key);
+  GRPC_MDELEM_UNREF(channeld->te_trailers);
+  GRPC_MDELEM_UNREF(channeld->status_ok);
+  GRPC_MDELEM_UNREF(channeld->status_not_found);
+  GRPC_MDELEM_UNREF(channeld->method_post);
+  GRPC_MDELEM_UNREF(channeld->http_scheme);
+  GRPC_MDELEM_UNREF(channeld->https_scheme);
+  GRPC_MDELEM_UNREF(channeld->grpc_scheme);
+  GRPC_MDELEM_UNREF(channeld->content_type);
+  GRPC_MDSTR_UNREF(channeld->path_key);
+  GRPC_MDSTR_UNREF(channeld->authority_key);
+  GRPC_MDSTR_UNREF(channeld->host_key);
 }
 
 const grpc_channel_filter grpc_http_server_filter = {

src/core/httpcli/httpcli.h

diff --git a/src/core/httpcli/httpcli.h b/src/core/httpcli/httpcli.h
index 06699e8..ab98178 100644
--- a/src/core/httpcli/httpcli.h
+++ b/src/core/httpcli/httpcli.h
@@ -85,7 +85,7 @@
   char *body;
 } grpc_httpcli_response;
 
-/* Callback for grpc_httpcli_get */
+/* Callback for grpc_httpcli_get and grpc_httpcli_post. */
 typedef void (*grpc_httpcli_response_cb)(void *user_data,
                                          const grpc_httpcli_response *response);
 
@@ -100,8 +100,6 @@
    'request' contains request parameters - these are caller owned and can be
      destroyed once the call returns
    'deadline' contains a deadline for the request (or gpr_inf_future)
-   'em' points to a caller owned event manager that must be alive for the
-     lifetime of the request
    'on_response' is a callback to report results to (and 'user_data' is a user
      supplied pointer to pass to said call) */
 void grpc_httpcli_get(grpc_httpcli_context *context, grpc_pollset *pollset,

src/core/iomgr/iomgr.c

diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c
index c507e7c..4a2c45a 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/iomgr/iomgr.c
@@ -111,10 +111,13 @@
   grpc_iomgr_closure *closure;
   gpr_timespec shutdown_deadline =
       gpr_time_add(gpr_now(), gpr_time_from_seconds(10));
+  gpr_timespec last_warning_time = gpr_now();
 
   gpr_mu_lock(&g_mu);
   g_shutdown = 1;
   while (g_cbs_head != NULL || g_root_object.next != &g_root_object) {
+    if (gpr_time_cmp(gpr_time_sub(gpr_now(), last_warning_time),
+                     gpr_time_from_seconds(1)) >= 0) {
     if (g_cbs_head != NULL && g_root_object.next != &g_root_object) {
       gpr_log(GPR_DEBUG,
               "Waiting for %d iomgr objects to be destroyed and executing "
@@ -126,6 +129,8 @@
       gpr_log(GPR_DEBUG, "Waiting for %d iomgr objects to be destroyed",
               count_objects());
     }
+    last_warning_time = gpr_now();
+    }
     if (g_cbs_head) {
       do {
         closure = g_cbs_head;

src/core/iomgr/socket_windows.c

diff --git a/src/core/iomgr/socket_windows.c b/src/core/iomgr/socket_windows.c
index fbf3fdc..897408d 100644
--- a/src/core/iomgr/socket_windows.c
+++ b/src/core/iomgr/socket_windows.c
@@ -45,11 +45,14 @@
 #include "src/core/iomgr/socket_windows.h"
 
 grpc_winsocket *grpc_winsocket_create(SOCKET socket, const char *name) {
+  char *final_name;
   grpc_winsocket *r = gpr_malloc(sizeof(grpc_winsocket));
   memset(r, 0, sizeof(grpc_winsocket));
   r->socket = socket;
   gpr_mu_init(&r->state_mu);
-  grpc_iomgr_register_object(&r->iomgr_object, name);
+  gpr_asprintf(&final_name, "%s:socket=0x%p", name, r);
+  grpc_iomgr_register_object(&r->iomgr_object, final_name);
+  gpr_free(final_name);
   grpc_iocp_add_socket(r);
   return r;
 }

src/core/iomgr/tcp_posix.c

diff --git a/src/core/iomgr/tcp_posix.c b/src/core/iomgr/tcp_posix.c
index 9ad089a..b6d6efc 100644
--- a/src/core/iomgr/tcp_posix.c
+++ b/src/core/iomgr/tcp_posix.c
@@ -313,9 +313,7 @@
     size_t i;
     gpr_log(GPR_DEBUG, "read: status=%d", status);
     for (i = 0; i < nslices; i++) {
-      char *dump =
-          gpr_hexdump((char *)GPR_SLICE_START_PTR(slices[i]),
-                      GPR_SLICE_LENGTH(slices[i]), GPR_HEXDUMP_PLAINTEXT);
+      char *dump = gpr_dump_slice(slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
       gpr_log(GPR_DEBUG, "READ: %s", dump);
       gpr_free(dump);
     }
@@ -540,9 +538,7 @@
     size_t i;
 
     for (i = 0; i < nslices; i++) {
-      char *data =
-          gpr_hexdump((char *)GPR_SLICE_START_PTR(slices[i]),
-                      GPR_SLICE_LENGTH(slices[i]), GPR_HEXDUMP_PLAINTEXT);
+      char *data = gpr_dump_slice(slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
       gpr_log(GPR_DEBUG, "WRITE %p: %s", tcp, data);
       gpr_free(data);
     }

src/core/json/json.h

diff --git a/src/core/json/json.h b/src/core/json/json.h
index b78b42a..cac18ad 100644
--- a/src/core/json/json.h
+++ b/src/core/json/json.h
@@ -53,7 +53,7 @@
 } grpc_json;
 
 /* The next two functions are going to parse the input string, and
- * destroy it in the process, in order to use its space to store
+ * modify it in the process, in order to use its space to store
  * all of the keys and values for the returned object tree.
  *
  * They assume UTF-8 input stream, and will output UTF-8 encoded

src/core/security/client_auth_filter.c

diff --git a/src/core/security/client_auth_filter.c b/src/core/security/client_auth_filter.c
index f8d18d9..9e49a80 100644
--- a/src/core/security/client_auth_filter.c
+++ b/src/core/security/client_auth_filter.c
@@ -61,6 +61,7 @@
   grpc_transport_stream_op op;
   size_t op_md_idx;
   int sent_initial_metadata;
+  gpr_uint8 security_context_set;
   grpc_linked_mdelem md_links[MAX_CREDENTIALS_METADATA_COUNT];
 } call_data;
 
@@ -199,8 +200,22 @@
   channel_data *chand = elem->channel_data;
   grpc_linked_mdelem *l;
   size_t i;
+  grpc_client_security_context* sec_ctx = NULL;
 
-  /* TODO(jboeuf): write the call auth context. */
+  if (calld->security_context_set == 0) {
+    calld->security_context_set = 1;
+    GPR_ASSERT(op->context);
+    if (op->context[GRPC_CONTEXT_SECURITY].value == NULL) {
+      op->context[GRPC_CONTEXT_SECURITY].value =
+          grpc_client_security_context_create();
+      op->context[GRPC_CONTEXT_SECURITY].destroy =
+          grpc_client_security_context_destroy;
+    }
+    sec_ctx = op->context[GRPC_CONTEXT_SECURITY].value;
+    GRPC_AUTH_CONTEXT_UNREF(sec_ctx->auth_context, "client auth filter");
+    sec_ctx->auth_context = GRPC_AUTH_CONTEXT_REF(
+        chand->security_connector->base.auth_context, "client_auth_filter");
+  }
 
   if (op->bind_pollset) {
     calld->pollset = op->bind_pollset;
@@ -219,11 +234,11 @@
         /* Pointer comparison is OK for md_elems created from the same context.
          */
         if (md->key == chand->authority_string) {
-          if (calld->host != NULL) grpc_mdstr_unref(calld->host);
-          calld->host = grpc_mdstr_ref(md->value);
+          if (calld->host != NULL) GRPC_MDSTR_UNREF(calld->host);
+          calld->host = GRPC_MDSTR_REF(md->value);
         } else if (md->key == chand->path_string) {
-          if (calld->method != NULL) grpc_mdstr_unref(calld->method);
-          calld->method = grpc_mdstr_ref(md->value);
+          if (calld->method != NULL) GRPC_MDSTR_UNREF(calld->method);
+          calld->method = GRPC_MDSTR_REF(md->value);
         }
       }
       if (calld->host != NULL) {
@@ -263,6 +278,7 @@
   calld->method = NULL;
   calld->pollset = NULL;
   calld->sent_initial_metadata = 0;
+  calld->security_context_set = 0;
 
   GPR_ASSERT(!initial_op || !initial_op->send_ops);
 }
@@ -272,10 +288,10 @@
   call_data *calld = elem->call_data;
   grpc_credentials_unref(calld->creds);
   if (calld->host != NULL) {
-    grpc_mdstr_unref(calld->host);
+    GRPC_MDSTR_UNREF(calld->host);
   }
   if (calld->method != NULL) {
-    grpc_mdstr_unref(calld->method);
+    GRPC_MDSTR_UNREF(calld->method);
   }
 }
 
@@ -314,16 +330,16 @@
   if (ctx != NULL)
     GRPC_SECURITY_CONNECTOR_UNREF(&ctx->base, "client_auth_filter");
   if (chand->authority_string != NULL) {
-    grpc_mdstr_unref(chand->authority_string);
+    GRPC_MDSTR_UNREF(chand->authority_string);
   }
   if (chand->error_msg_key != NULL) {
-    grpc_mdstr_unref(chand->error_msg_key);
+    GRPC_MDSTR_UNREF(chand->error_msg_key);
   }
   if (chand->status_key != NULL) {
-    grpc_mdstr_unref(chand->status_key);
+    GRPC_MDSTR_UNREF(chand->status_key);
   }
   if (chand->path_string != NULL) {
-    grpc_mdstr_unref(chand->path_string);
+    GRPC_MDSTR_UNREF(chand->path_string);
   }
 }
 

src/core/security/credentials.c

diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c
index f24174f..52fd5a2 100644
--- a/src/core/security/credentials.c
+++ b/src/core/security/credentials.c
@@ -594,7 +594,7 @@
   gpr_mu_init(&c->mu);
   c->token_expiration = gpr_inf_past;
   c->fetch_func = fetch_func;
-  grpc_pollset_set_init(&c->pollset_set);
+  grpc_httpcli_context_init(&c->httpcli_context);
 }
 
 /* -- ComputeEngine credentials. -- */
@@ -820,6 +820,54 @@
   return &c->base;
 }
 
+/* -- Oauth2 Access Token credentials. -- */
+
+static void access_token_destroy(grpc_credentials *creds) {
+  grpc_access_token_credentials *c = (grpc_access_token_credentials *)creds;
+  grpc_credentials_md_store_unref(c->access_token_md);
+  gpr_free(c);
+}
+
+static int access_token_has_request_metadata(const grpc_credentials *creds) {
+  return 1;
+}
+
+static int access_token_has_request_metadata_only(
+    const grpc_credentials *creds) {
+  return 1;
+}
+
+static void access_token_get_request_metadata(grpc_credentials *creds,
+                                             grpc_pollset *pollset,
+                                             const char *service_url,
+                                             grpc_credentials_metadata_cb cb,
+                                             void *user_data) {
+  grpc_access_token_credentials *c = (grpc_access_token_credentials *)creds;
+  cb(user_data, c->access_token_md->entries, 1, GRPC_CREDENTIALS_OK);
+}
+
+static grpc_credentials_vtable access_token_vtable = {
+    access_token_destroy, access_token_has_request_metadata,
+    access_token_has_request_metadata_only, access_token_get_request_metadata,
+    NULL};
+
+grpc_credentials *grpc_access_token_credentials_create(
+    const char *access_token) {
+  grpc_access_token_credentials *c =
+      gpr_malloc(sizeof(grpc_access_token_credentials));
+  char *token_md_value;
+  memset(c, 0, sizeof(grpc_access_token_credentials));
+  c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2;
+  c->base.vtable = &access_token_vtable;
+  gpr_ref_init(&c->base.refcount, 1);
+  c->access_token_md = grpc_credentials_md_store_create(1);
+  gpr_asprintf(&token_md_value, "Bearer %s", access_token);
+  grpc_credentials_md_store_add_cstrings(
+      c->access_token_md, GRPC_AUTHORIZATION_METADATA_KEY, token_md_value);
+  gpr_free(token_md_value);
+  return &c->base;
+}
+
 /* -- Fake transport security credentials. -- */
 
 static void fake_transport_security_credentials_destroy(

src/core/security/credentials.h

diff --git a/src/core/security/credentials.h b/src/core/security/credentials.h
index 93b141f..d988901 100644
--- a/src/core/security/credentials.h
+++ b/src/core/security/credentials.h
@@ -262,7 +262,6 @@
   grpc_credentials_md_store *access_token_md;
   gpr_timespec token_expiration;
   grpc_httpcli_context httpcli_context;
-  grpc_pollset_set pollset_set;
   grpc_fetch_oauth2_func fetch_func;
 } grpc_oauth2_token_fetcher_credentials;
 
@@ -282,6 +281,13 @@
   grpc_auth_refresh_token refresh_token;
 } grpc_refresh_token_credentials;
 
+/* -- Oauth2 Access Token credentials. -- */
+
+typedef struct {
+  grpc_credentials base;
+  grpc_credentials_md_store *access_token_md;
+} grpc_access_token_credentials;
+
 /* -- Fake Oauth2 credentials. -- */
 
 typedef struct {

src/core/security/jwt_verifier.c

diff --git a/src/core/security/jwt_verifier.c b/src/core/security/jwt_verifier.c
new file mode 100644
index 0000000..01007a1
--- /dev/null
+++ b/src/core/security/jwt_verifier.c
@@ -0,0 +1,830 @@
+/*
+ *
+ * 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 disclaimser.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimser
+ * 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 "src/core/security/jwt_verifier.h"
+
+#include <string.h>
+
+#include "src/core/httpcli/httpcli.h"
+#include "src/core/security/base64.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <openssl/pem.h>
+
+/* --- Utils. --- */
+
+const char *grpc_jwt_verifier_status_to_string(
+    grpc_jwt_verifier_status status) {
+  switch (status) {
+    case GRPC_JWT_VERIFIER_OK:
+      return "OK";
+    case GRPC_JWT_VERIFIER_BAD_SIGNATURE:
+      return "BAD_SIGNATURE";
+    case GRPC_JWT_VERIFIER_BAD_FORMAT:
+      return "BAD_FORMAT";
+    case GRPC_JWT_VERIFIER_BAD_AUDIENCE:
+      return "BAD_AUDIENCE";
+    case GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR:
+      return "KEY_RETRIEVAL_ERROR";
+    case GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE:
+      return "TIME_CONSTRAINT_FAILURE";
+    case GRPC_JWT_VERIFIER_GENERIC_ERROR:
+      return "GENERIC_ERROR";
+    default:
+      return "UNKNOWN";
+  }
+}
+
+static const EVP_MD *evp_md_from_alg(const char *alg) {
+  if (strcmp(alg, "RS256") == 0) {
+    return EVP_sha256();
+  } else if (strcmp(alg, "RS384") == 0) {
+    return EVP_sha384();
+  } else if (strcmp(alg, "RS512") == 0) {
+    return EVP_sha512();
+  } else {
+    return NULL;
+  }
+}
+
+static grpc_json *parse_json_part_from_jwt(const char *str, size_t len,
+                                           gpr_slice *buffer) {
+  grpc_json *json;
+
+  *buffer = grpc_base64_decode_with_len(str, len, 1);
+  if (GPR_SLICE_IS_EMPTY(*buffer)) {
+    gpr_log(GPR_ERROR, "Invalid base64.");
+    return NULL;
+  }
+  json = grpc_json_parse_string_with_len((char *)GPR_SLICE_START_PTR(*buffer),
+                                         GPR_SLICE_LENGTH(*buffer));
+  if (json == NULL) {
+    gpr_slice_unref(*buffer);
+    gpr_log(GPR_ERROR, "JSON parsing error.");
+  }
+  return json;
+}
+
+static const char *validate_string_field(const grpc_json *json,
+                                         const char *key) {
+  if (json->type != GRPC_JSON_STRING) {
+    gpr_log(GPR_ERROR, "Invalid %s field [%s]", key, json->value);
+    return NULL;
+  }
+  return json->value;
+}
+
+static gpr_timespec validate_time_field(const grpc_json *json,
+                                        const char *key) {
+  gpr_timespec result = gpr_time_0;
+  if (json->type != GRPC_JSON_NUMBER) {
+    gpr_log(GPR_ERROR, "Invalid %s field [%s]", key, json->value);
+    return result;
+  }
+  result.tv_sec = strtol(json->value, NULL, 10);
+  return result;
+}
+
+/* --- JOSE header. see http://tools.ietf.org/html/rfc7515#section-4 --- */
+
+typedef struct {
+  const char *alg;
+  const char *kid;
+  const char *typ;
+  /* TODO(jboeuf): Add others as needed (jku, jwk, x5u, x5c and so on...). */
+  gpr_slice buffer;
+} jose_header;
+
+static void jose_header_destroy(jose_header *h) {
+  gpr_slice_unref(h->buffer);
+  gpr_free(h);
+}
+
+/* Takes ownership of json and buffer. */
+static jose_header *jose_header_from_json(grpc_json *json, gpr_slice buffer) {
+  grpc_json *cur;
+  jose_header *h = gpr_malloc(sizeof(jose_header));
+  memset(h, 0, sizeof(jose_header));
+  h->buffer = buffer;
+  for (cur = json->child; cur != NULL; cur = cur->next) {
+    if (strcmp(cur->key, "alg") == 0) {
+      /* We only support RSA-1.5 signatures for now.
+         Beware of this if we add HMAC support:
+         https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
+      */
+      if (cur->type != GRPC_JSON_STRING || strncmp(cur->value, "RS", 2) ||
+          evp_md_from_alg(cur->value) == NULL) {
+        gpr_log(GPR_ERROR, "Invalid alg field [%s]", cur->value);
+        goto error;
+      }
+      h->alg = cur->value;
+    } else if (strcmp(cur->key, "typ") == 0) {
+      h->typ = validate_string_field(cur, "typ");
+      if (h->typ == NULL) goto error;
+    } else if (strcmp(cur->key, "kid") == 0) {
+      h->kid = validate_string_field(cur, "kid");
+      if (h->kid == NULL) goto error;
+    }
+  }
+  if (h->alg == NULL) {
+    gpr_log(GPR_ERROR, "Missing alg field.");
+    goto error;
+  }
+  grpc_json_destroy(json);
+  h->buffer = buffer;
+  return h;
+
+error:
+  grpc_json_destroy(json);
+  jose_header_destroy(h);
+  return NULL;
+}
+
+/* --- JWT claims. see http://tools.ietf.org/html/rfc7519#section-4.1 */
+
+struct grpc_jwt_claims {
+  /* Well known properties already parsed. */
+  const char *sub;
+  const char *iss;
+  const char *aud;
+  const char *jti;
+  gpr_timespec iat;
+  gpr_timespec exp;
+  gpr_timespec nbf;
+
+  grpc_json *json;
+  gpr_slice buffer;
+};
+
+
+void grpc_jwt_claims_destroy(grpc_jwt_claims *claims) {
+  grpc_json_destroy(claims->json);
+  gpr_slice_unref(claims->buffer);
+  gpr_free(claims);
+}
+
+const grpc_json *grpc_jwt_claims_json(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return NULL;
+  return claims->json;
+}
+
+const char *grpc_jwt_claims_subject(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return NULL;
+  return claims->sub;
+}
+
+const char *grpc_jwt_claims_issuer(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return NULL;
+  return claims->iss;
+}
+
+const char *grpc_jwt_claims_id(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return NULL;
+  return claims->jti;
+}
+
+const char *grpc_jwt_claims_audience(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return NULL;
+  return claims->aud;
+}
+
+gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return gpr_inf_past;
+  return claims->iat;
+}
+
+gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return gpr_inf_future;
+  return claims->exp;
+}
+
+gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims *claims) {
+  if (claims == NULL) return gpr_inf_past;
+  return claims->nbf;
+}
+
+/* Takes ownership of json and buffer even in case of failure. */
+grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, gpr_slice buffer) {
+  grpc_json *cur;
+  grpc_jwt_claims *claims = gpr_malloc(sizeof(grpc_jwt_claims));
+  memset(claims, 0, sizeof(grpc_jwt_claims));
+  claims->json = json;
+  claims->buffer = buffer;
+  claims->iat = gpr_inf_past;
+  claims->nbf = gpr_inf_past;
+  claims->exp = gpr_inf_future;
+
+  /* Per the spec, all fields are optional. */
+  for (cur = json->child; cur != NULL; cur = cur->next) {
+    if (strcmp(cur->key, "sub") == 0) {
+      claims->sub = validate_string_field(cur, "sub");
+      if (claims->sub == NULL) goto error;
+    } else if (strcmp(cur->key, "iss") == 0) {
+      claims->iss = validate_string_field(cur, "iss");
+      if (claims->iss == NULL) goto error;
+    } else if (strcmp(cur->key, "aud") == 0) {
+      claims->aud = validate_string_field(cur, "aud");
+      if (claims->aud == NULL) goto error;
+    } else if (strcmp(cur->key, "jti") == 0) {
+      claims->jti = validate_string_field(cur, "jti");
+      if (claims->jti == NULL) goto error;
+    } else if (strcmp(cur->key, "iat") == 0) {
+      claims->iat = validate_time_field(cur, "iat");
+      if (gpr_time_cmp(claims->iat, gpr_time_0) == 0) goto error;
+    } else if (strcmp(cur->key, "exp") == 0) {
+      claims->exp = validate_time_field(cur, "exp");
+      if (gpr_time_cmp(claims->exp, gpr_time_0) == 0) goto error;
+    } else if (strcmp(cur->key, "nbf") == 0) {
+      claims->nbf = validate_time_field(cur, "nbf");
+      if (gpr_time_cmp(claims->nbf, gpr_time_0) == 0) goto error;
+    }
+  }
+  return claims;
+
+error:
+  grpc_jwt_claims_destroy(claims);
+  return NULL;
+}
+
+grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims *claims,
+                                               const char *audience) {
+  gpr_timespec skewed_now;
+  int audience_ok;
+
+  GPR_ASSERT(claims != NULL);
+
+  skewed_now = gpr_time_add(gpr_now(), grpc_jwt_verifier_clock_skew);
+  if (gpr_time_cmp(skewed_now, claims->nbf) < 0) {
+    gpr_log(GPR_ERROR, "JWT is not valid yet.");
+    return GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE;
+  }
+  skewed_now = gpr_time_sub(gpr_now(), grpc_jwt_verifier_clock_skew);
+  if (gpr_time_cmp(skewed_now, claims->exp) > 0) {
+    gpr_log(GPR_ERROR, "JWT is expired.");
+    return GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE;
+  }
+
+  if (audience == NULL) {
+    audience_ok = claims->aud == NULL;
+  } else {
+    audience_ok = claims->aud != NULL && strcmp(audience, claims->aud) == 0;
+  }
+  if (!audience_ok) {
+    gpr_log(GPR_ERROR, "Audience mismatch: expected %s and found %s.",
+            audience == NULL ? "NULL" : audience,
+            claims->aud == NULL ? "NULL" : claims->aud);
+    return GRPC_JWT_VERIFIER_BAD_AUDIENCE;
+  }
+  return GRPC_JWT_VERIFIER_OK;
+}
+
+/* --- verifier_cb_ctx object. --- */
+
+typedef struct {
+  grpc_jwt_verifier *verifier;
+  grpc_pollset *pollset;
+  jose_header *header;
+  grpc_jwt_claims *claims;
+  char *audience;
+  gpr_slice signature;
+  gpr_slice signed_data;
+  void *user_data;
+  grpc_jwt_verification_done_cb user_cb;
+} verifier_cb_ctx;
+
+/* Takes ownership of the header, claims and signature. */
+static verifier_cb_ctx *verifier_cb_ctx_create(
+    grpc_jwt_verifier *verifier, grpc_pollset *pollset,
+    jose_header * header, grpc_jwt_claims *claims, const char *audience,
+    gpr_slice signature, const char *signed_jwt, size_t signed_jwt_len,
+    void *user_data, grpc_jwt_verification_done_cb cb) {
+  verifier_cb_ctx *ctx = gpr_malloc(sizeof(verifier_cb_ctx));
+  memset(ctx, 0, sizeof(verifier_cb_ctx));
+  ctx->verifier = verifier;
+  ctx->pollset = pollset;
+  ctx->header = header;
+  ctx->audience = gpr_strdup(audience);
+  ctx->claims = claims;
+  ctx->signature = signature;
+  ctx->signed_data = gpr_slice_from_copied_buffer(signed_jwt, signed_jwt_len);
+  ctx->user_data = user_data;
+  ctx->user_cb = cb;
+  return ctx;
+}
+
+void verifier_cb_ctx_destroy(verifier_cb_ctx *ctx) {
+  if (ctx->audience != NULL) gpr_free(ctx->audience);
+  if (ctx->claims != NULL) grpc_jwt_claims_destroy(ctx->claims);
+  gpr_slice_unref(ctx->signature);
+  gpr_slice_unref(ctx->signed_data);
+  jose_header_destroy(ctx->header);
+  /* TODO: see what to do with claims... */
+  gpr_free(ctx);
+}
+
+/* --- grpc_jwt_verifier object. --- */
+
+/* Clock skew defaults to one minute. */
+gpr_timespec grpc_jwt_verifier_clock_skew = {60, 0};
+
+/* Max delay defaults to one minute. */
+gpr_timespec grpc_jwt_verifier_max_delay = {60, 0};
+
+typedef struct {
+  char *email_domain;
+  char *key_url_prefix;
+} email_key_mapping;
+
+struct grpc_jwt_verifier {
+  email_key_mapping *mappings;
+  size_t num_mappings; /* Should be very few, linear search ok. */
+  size_t allocated_mappings;
+  grpc_httpcli_context http_ctx;
+};
+
+static grpc_json *json_from_http(const grpc_httpcli_response *response) {
+  grpc_json *json = NULL;
+
+  if (response == NULL) {
+    gpr_log(GPR_ERROR, "HTTP response is NULL.");
+    return NULL;
+  }
+  if (response->status != 200) {
+    gpr_log(GPR_ERROR, "Call to http server failed with error %d.",
+            response->status);
+    return NULL;
+  }
+
+  json = grpc_json_parse_string_with_len(response->body, response->body_length);
+  if (json == NULL) {
+    gpr_log(GPR_ERROR, "Invalid JSON found in response.");
+  }
+  return json;
+}
+
+static const grpc_json *find_property_by_name(const grpc_json *json,
+                                              const char *name) {
+  const grpc_json *cur;
+  for (cur = json->child; cur != NULL; cur = cur->next) {
+    if (strcmp(cur->key, name) == 0) return cur;
+  }
+  return NULL;
+}
+
+static EVP_PKEY *extract_pkey_from_x509(const char *x509_str) {
+  X509 *x509 = NULL;
+  EVP_PKEY *result = NULL;
+  BIO *bio = BIO_new(BIO_s_mem());
+  BIO_write(bio, x509_str, strlen(x509_str));
+  x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
+  if (x509 == NULL) {
+    gpr_log(GPR_ERROR, "Unable to parse x509 cert.");
+    goto end;
+  }
+  result = X509_get_pubkey(x509);
+  if (result == NULL) {
+    gpr_log(GPR_ERROR, "Cannot find public key in X509 cert.");
+  }
+
+end:
+  BIO_free(bio);
+  if (x509 != NULL) X509_free(x509);
+  return result;
+}
+
+static BIGNUM *bignum_from_base64(const char *b64) {
+  BIGNUM *result = NULL;
+  gpr_slice bin;
+
+  if (b64 == NULL) return NULL;
+  bin = grpc_base64_decode(b64, 1);
+  if (GPR_SLICE_IS_EMPTY(bin)) {
+    gpr_log(GPR_ERROR, "Invalid base64 for big num.");
+    return NULL;
+  }
+  result = BN_bin2bn(GPR_SLICE_START_PTR(bin), GPR_SLICE_LENGTH(bin), NULL);
+  gpr_slice_unref(bin);
+  return result;
+}
+
+static EVP_PKEY *pkey_from_jwk(const grpc_json *json, const char *kty) {
+  const grpc_json *key_prop;
+  RSA *rsa = NULL;
+  EVP_PKEY *result = NULL;
+
+  GPR_ASSERT(kty != NULL && json != NULL);
+  if (strcmp(kty, "RSA") != 0) {
+    gpr_log(GPR_ERROR, "Unsupported key type %s.", kty);
+    goto end;
+  }
+  rsa = RSA_new();
+  if (rsa == NULL) {
+    gpr_log(GPR_ERROR, "Could not create rsa key.");
+    goto end;
+  }
+  for (key_prop = json->child; key_prop != NULL; key_prop = key_prop->next) {
+    if (strcmp(key_prop->key, "n") == 0) {
+      rsa->n = bignum_from_base64(validate_string_field(key_prop, "n"));
+      if (rsa->n == NULL) goto end;
+    } else if (strcmp(key_prop->key, "e") == 0) {
+      rsa->e = bignum_from_base64(validate_string_field(key_prop, "e"));
+      if (rsa->e == NULL) goto end;
+    }
+  }
+  if (rsa->e == NULL || rsa->n == NULL) {
+    gpr_log(GPR_ERROR, "Missing RSA public key field.");
+    goto end;
+  }
+  result = EVP_PKEY_new();
+  EVP_PKEY_set1_RSA(result, rsa); /* uprefs rsa. */
+
+end:
+  if (rsa != NULL) RSA_free(rsa);
+  return result;
+}
+
+static EVP_PKEY *find_verification_key(const grpc_json *json,
+                                       const char *header_alg,
+                                       const char *header_kid) {
+  const grpc_json *jkey;
+  const grpc_json *jwk_keys;
+  /* Try to parse the json as a JWK set:
+     https://tools.ietf.org/html/rfc7517#section-5. */
+  jwk_keys = find_property_by_name(json, "keys");
+  if (jwk_keys == NULL) {
+    /* Use the google proprietary format which is:
+      { <kid1>: <x5091>, <kid2>: <x5092>, ... } */
+    const grpc_json *cur = find_property_by_name(json, header_kid);
+    if (cur == NULL) return NULL;
+    return extract_pkey_from_x509(cur->value);
+  }
+
+  if (jwk_keys->type != GRPC_JSON_ARRAY) {
+    gpr_log(GPR_ERROR,
+            "Unexpected value type of keys property in jwks key set.");
+    return NULL;
+  }
+  /* Key format is specified in:
+     https://tools.ietf.org/html/rfc7518#section-6. */
+  for (jkey = jwk_keys->child; jkey != NULL; jkey = jkey->next) {
+    grpc_json *key_prop;
+    const char *alg = NULL;
+    const char *kid = NULL;
+    const char *kty = NULL;
+
+    if (jkey->type != GRPC_JSON_OBJECT) continue;
+    for (key_prop = jkey->child; key_prop != NULL; key_prop = key_prop->next) {
+      if (strcmp(key_prop->key, "alg") == 0 &&
+          key_prop->type == GRPC_JSON_STRING) {
+        alg = key_prop->value;
+      } else if (strcmp(key_prop->key, "kid") == 0 &&
+                 key_prop->type == GRPC_JSON_STRING) {
+        kid = key_prop->value;
+      } else if (strcmp(key_prop->key, "kty") == 0 &&
+                 key_prop->type == GRPC_JSON_STRING) {
+        kty = key_prop->value;
+      }
+    }
+    if (alg != NULL && kid != NULL && kty != NULL &&
+        strcmp(kid, header_kid) == 0 && strcmp(alg, header_alg) == 0) {
+      return pkey_from_jwk(jkey, kty);
+    }
+  }
+  gpr_log(GPR_ERROR,
+          "Could not find matching key in key set for kid=%s and alg=%s",
+          header_kid, header_alg);
+  return NULL;
+}
+
+static int verify_jwt_signature(EVP_PKEY *key, const char *alg,
+                                gpr_slice signature, gpr_slice signed_data) {
+  EVP_MD_CTX *md_ctx = EVP_MD_CTX_create();
+  const EVP_MD *md = evp_md_from_alg(alg);
+  int result = 0;
+
+  GPR_ASSERT(md != NULL); /* Checked before. */
+  if (md_ctx == NULL) {
+    gpr_log(GPR_ERROR, "Could not create EVP_MD_CTX.");
+    goto end;
+  }
+  if (EVP_DigestVerifyInit(md_ctx, NULL, md, NULL, key) != 1) {
+    gpr_log(GPR_ERROR, "EVP_DigestVerifyInit failed.");
+    goto end;
+  }
+  if (EVP_DigestVerifyUpdate(md_ctx, GPR_SLICE_START_PTR(signed_data),
+                             GPR_SLICE_LENGTH(signed_data)) != 1) {
+    gpr_log(GPR_ERROR, "EVP_DigestVerifyUpdate failed.");
+    goto end;
+  }
+  if (EVP_DigestVerifyFinal(md_ctx, GPR_SLICE_START_PTR(signature),
+                            GPR_SLICE_LENGTH(signature)) != 1) {
+    gpr_log(GPR_ERROR, "JWT signature verification failed.");
+    goto end;
+  }
+  result = 1;
+
+end:
+  if (md_ctx != NULL) EVP_MD_CTX_destroy(md_ctx);
+  return result;
+}
+
+static void on_keys_retrieved(void *user_data,
+                              const grpc_httpcli_response *response) {
+  grpc_json *json = json_from_http(response);
+  verifier_cb_ctx *ctx = (verifier_cb_ctx *)user_data;
+  EVP_PKEY *verification_key = NULL;
+  grpc_jwt_verifier_status status = GRPC_JWT_VERIFIER_GENERIC_ERROR;
+  grpc_jwt_claims *claims = NULL;
+
+  if (json == NULL) {
+    status = GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR;
+    goto end;
+  }
+  verification_key =
+      find_verification_key(json, ctx->header->alg, ctx->header->kid);
+  if (verification_key == NULL) {
+    gpr_log(GPR_ERROR, "Could not find verification key with kid %s.",
+            ctx->header->kid);
+    status = GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR;
+    goto end;
+  }
+
+  if (!verify_jwt_signature(verification_key, ctx->header->alg, ctx->signature,
+                            ctx->signed_data)) {
+    status = GRPC_JWT_VERIFIER_BAD_SIGNATURE;
+    goto end;
+  }
+
+  status = grpc_jwt_claims_check(ctx->claims, ctx->audience);
+  if (status == GRPC_JWT_VERIFIER_OK) {
+    /* Pass ownership. */
+    claims = ctx->claims;
+    ctx->claims = NULL;
+  }
+
+end:
+  if (json != NULL) grpc_json_destroy(json);
+  if (verification_key != NULL) EVP_PKEY_free(verification_key);
+  ctx->user_cb(ctx->user_data, status, claims);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+static void on_openid_config_retrieved(void *user_data,
+                                       const grpc_httpcli_response *response) {
+  const grpc_json* cur;
+  grpc_json *json = json_from_http(response);
+  verifier_cb_ctx *ctx = (verifier_cb_ctx *)user_data;
+  grpc_httpcli_request req;
+  const char *jwks_uri;
+
+  /* TODO(jboeuf): Cache the jwks_uri in order to avoid this hop next time.*/
+  if (json == NULL) goto error;
+  cur = find_property_by_name(json, "jwks_uri");
+  if (cur == NULL) {
+    gpr_log(GPR_ERROR, "Could not find jwks_uri in openid config.");
+    goto error;
+  }
+  jwks_uri = validate_string_field(cur, "jwks_uri");
+  if (jwks_uri == NULL) goto error;
+  if (strstr(jwks_uri, "https://") != jwks_uri) {
+    gpr_log(GPR_ERROR, "Invalid non https jwks_uri: %s.", jwks_uri);
+    goto error;
+  }
+  jwks_uri += 8;
+  req.use_ssl = 1;
+  req.host = gpr_strdup(jwks_uri);
+  req.path = strchr(jwks_uri, '/');
+  if (req.path == NULL) {
+    req.path = "";
+  } else {
+    *(req.host + (req.path - jwks_uri)) = '\0';
+  }
+  grpc_httpcli_get(&ctx->verifier->http_ctx, ctx->pollset, &req,
+                   gpr_time_add(gpr_now(), grpc_jwt_verifier_max_delay),
+                   on_keys_retrieved, ctx);
+  grpc_json_destroy(json);
+  gpr_free(req.host);
+  return;
+
+error:
+  if (json != NULL) grpc_json_destroy(json);
+  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+static email_key_mapping *verifier_get_mapping(
+    grpc_jwt_verifier *v, const char *email_domain) {
+  size_t i;
+  if (v->mappings == NULL) return NULL;
+  for (i = 0; i < v->num_mappings; i++) {
+    if (strcmp(email_domain, v->mappings[i].email_domain) == 0) {
+      return &v->mappings[i];
+    }
+  }
+  return NULL;
+}
+
+static void verifier_put_mapping(grpc_jwt_verifier *v, const char *email_domain,
+                                 const char *key_url_prefix) {
+  email_key_mapping *mapping = verifier_get_mapping(v, email_domain);
+  GPR_ASSERT(v->num_mappings < v->allocated_mappings);
+  if (mapping != NULL) {
+    gpr_free(mapping->key_url_prefix);
+    mapping->key_url_prefix = gpr_strdup(key_url_prefix);
+    return;
+  }
+  v->mappings[v->num_mappings].email_domain = gpr_strdup(email_domain);
+  v->mappings[v->num_mappings].key_url_prefix = gpr_strdup(key_url_prefix);
+  v->num_mappings++;
+  GPR_ASSERT(v->num_mappings <= v->allocated_mappings);
+}
+
+/* Takes ownership of ctx. */
+static void retrieve_key_and_verify(verifier_cb_ctx *ctx) {
+  const char *at_sign;
+  grpc_httpcli_response_cb http_cb;
+  char *path_prefix = NULL;
+  const char *iss;
+  grpc_httpcli_request req;
+  memset(&req, 0, sizeof(grpc_httpcli_request));
+  req.use_ssl = 1;
+
+  GPR_ASSERT(ctx != NULL && ctx->header != NULL && ctx->claims != NULL);
+  iss = ctx->claims->iss;
+  if (ctx->header->kid == NULL) {
+    gpr_log(GPR_ERROR, "Missing kid in jose header.");
+    goto error;
+  }
+  if (iss == NULL) {
+    gpr_log(GPR_ERROR, "Missing iss in claims.");
+    goto error;
+  }
+
+  /* This code relies on:
+     https://openid.net/specs/openid-connect-discovery-1_0.html
+     Nobody seems to implement the account/email/webfinger part 2. of the spec
+     so we will rely instead on email/url mappings if we detect such an issuer.
+     Part 4, on the other hand is implemented by both google and salesforce. */
+
+  /* Very non-sophisticated way to detect an email address. Should be good
+     enough for now... */
+  at_sign = strchr(iss, '@');
+  if (at_sign != NULL) {
+    email_key_mapping *mapping;
+    const char *email_domain = at_sign + 1;
+    GPR_ASSERT(ctx->verifier != NULL);
+    mapping = verifier_get_mapping(ctx->verifier, email_domain);
+    if (mapping == NULL) {
+      gpr_log(GPR_ERROR, "Missing mapping for issuer email.");
+      goto error;
+    }
+    req.host = gpr_strdup(mapping->key_url_prefix);
+    path_prefix = strchr(req.host, '/');
+    if (path_prefix == NULL) {
+      gpr_asprintf(&req.path, "/%s", iss);
+    } else {
+      *(path_prefix++) = '\0';
+      gpr_asprintf(&req.path, "/%s/%s", path_prefix, iss);
+    }
+    http_cb = on_keys_retrieved;
+  } else {
+    req.host = gpr_strdup(strstr(iss, "https://") == iss ? iss + 8 : iss);
+    path_prefix = strchr(req.host, '/');
+    if (path_prefix == NULL) {
+      req.path = gpr_strdup(GRPC_OPENID_CONFIG_URL_SUFFIX);
+    } else {
+      *(path_prefix++) = 0;
+      gpr_asprintf(&req.path, "/%s%s", path_prefix,
+                   GRPC_OPENID_CONFIG_URL_SUFFIX);
+    }
+    http_cb = on_openid_config_retrieved;
+  }
+
+  grpc_httpcli_get(&ctx->verifier->http_ctx, ctx->pollset, &req,
+                   gpr_time_add(gpr_now(), grpc_jwt_verifier_max_delay),
+                   http_cb, ctx);
+  gpr_free(req.host);
+  gpr_free(req.path);
+  return;
+
+error:
+  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+void grpc_jwt_verifier_verify(grpc_jwt_verifier *verifier,
+                              grpc_pollset *pollset, const char *jwt,
+                              const char *audience,
+                              grpc_jwt_verification_done_cb cb,
+                              void *user_data) {
+  const char *dot = NULL;
+  grpc_json *json;
+  jose_header *header = NULL;
+  grpc_jwt_claims *claims = NULL;
+  gpr_slice header_buffer;
+  gpr_slice claims_buffer;
+  gpr_slice signature;
+  size_t signed_jwt_len;
+  const char *cur = jwt;
+
+  GPR_ASSERT(verifier != NULL && jwt != NULL && audience != NULL && cb != NULL);
+  dot = strchr(cur, '.');
+  if (dot == NULL) goto error;
+  json = parse_json_part_from_jwt(cur, dot - cur, &header_buffer);
+  if (json == NULL)  goto error;
+  header = jose_header_from_json(json, header_buffer);
+  if (header == NULL) goto error;
+
+  cur = dot + 1;
+  dot = strchr(cur, '.');
+  if (dot == NULL) goto error;
+  json = parse_json_part_from_jwt(cur, dot - cur, &claims_buffer);
+  if (json == NULL)  goto error;
+  claims = grpc_jwt_claims_from_json(json, claims_buffer);
+  if (claims == NULL) goto error;
+
+  signed_jwt_len = (size_t)(dot - jwt);
+  cur = dot + 1;
+  signature = grpc_base64_decode(cur, 1);
+  if (GPR_SLICE_IS_EMPTY(signature)) goto error;
+  retrieve_key_and_verify(
+      verifier_cb_ctx_create(verifier, pollset, header, claims, audience,
+                             signature, jwt, signed_jwt_len, user_data, cb));
+  return;
+
+error:
+  if (header != NULL) jose_header_destroy(header);
+  if (claims != NULL) grpc_jwt_claims_destroy(claims);
+  cb(user_data, GRPC_JWT_VERIFIER_BAD_FORMAT, NULL);
+}
+
+grpc_jwt_verifier *grpc_jwt_verifier_create(
+    const grpc_jwt_verifier_email_domain_key_url_mapping *mappings,
+    size_t num_mappings) {
+  grpc_jwt_verifier *v = gpr_malloc(sizeof(grpc_jwt_verifier));
+  memset(v, 0, sizeof(grpc_jwt_verifier));
+  grpc_httpcli_context_init(&v->http_ctx);
+
+  /* We know at least of one mapping. */
+  v->allocated_mappings = 1 + num_mappings;
+  v->mappings = gpr_malloc(v->allocated_mappings * sizeof(email_key_mapping));
+  verifier_put_mapping(v, GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN,
+                       GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX);
+  /* User-Provided mappings. */
+  if (mappings != NULL) {
+    size_t i;
+    for (i = 0; i < num_mappings; i++) {
+      verifier_put_mapping(v, mappings[i].email_domain,
+                           mappings[i].key_url_prefix);
+    }
+  }
+  return v;
+}
+
+void grpc_jwt_verifier_destroy(grpc_jwt_verifier *v) {
+  size_t i;
+  if (v == NULL) return;
+  grpc_httpcli_context_destroy(&v->http_ctx);
+  if (v->mappings != NULL) {
+    for (i = 0; i < v->num_mappings; i++) {
+      gpr_free(v->mappings[i].email_domain);
+      gpr_free(v->mappings[i].key_url_prefix);
+    }
+    gpr_free(v->mappings);
+  }
+  gpr_free(v);
+}
+

src/core/security/jwt_verifier.h

diff --git a/src/core/security/jwt_verifier.h b/src/core/security/jwt_verifier.h
new file mode 100644
index 0000000..8077e24
--- /dev/null
+++ b/src/core/security/jwt_verifier.h
@@ -0,0 +1,136 @@
+/*
+ *
+ * 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 disclaimser.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimser
+ * 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.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CORE_SECURITY_JWT_VERIFIER_H
+#define GRPC_INTERNAL_CORE_SECURITY_JWT_VERIFIER_H
+
+#include "src/core/iomgr/pollset.h"
+#include "src/core/json/json.h"
+
+#include <grpc/support/slice.h>
+#include <grpc/support/time.h>
+
+/* --- Constants. --- */
+
+#define GRPC_OPENID_CONFIG_URL_SUFFIX "/.well-known/openid-configuration"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN \
+  "developer.gserviceaccount.com"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX \
+  "www.googleapis.com/robot/v1/metadata/x509"
+
+/* --- grpc_jwt_verifier_status. --- */
+
+typedef enum {
+  GRPC_JWT_VERIFIER_OK = 0,
+  GRPC_JWT_VERIFIER_BAD_SIGNATURE,
+  GRPC_JWT_VERIFIER_BAD_FORMAT,
+  GRPC_JWT_VERIFIER_BAD_AUDIENCE,
+  GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
+  GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE,
+  GRPC_JWT_VERIFIER_GENERIC_ERROR
+} grpc_jwt_verifier_status;
+
+const char *grpc_jwt_verifier_status_to_string(grpc_jwt_verifier_status status);
+
+/* --- grpc_jwt_claims. --- */
+
+typedef struct grpc_jwt_claims grpc_jwt_claims;
+
+void grpc_jwt_claims_destroy(grpc_jwt_claims *claims);
+
+/* Returns the whole JSON tree of the claims. */
+const grpc_json *grpc_jwt_claims_json(const grpc_jwt_claims *claims);
+
+/* Access to registered claims in https://tools.ietf.org/html/rfc7519#page-9 */
+const char *grpc_jwt_claims_subject(const grpc_jwt_claims *claims);
+const char *grpc_jwt_claims_issuer(const grpc_jwt_claims *claims);
+const char *grpc_jwt_claims_id(const grpc_jwt_claims *claims);
+const char *grpc_jwt_claims_audience(const grpc_jwt_claims *claims);
+gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims *claims);
+gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims *claims);
+gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims *claims);
+
+/* --- grpc_jwt_verifier. --- */
+
+typedef struct grpc_jwt_verifier grpc_jwt_verifier;
+
+typedef struct {
+  /* The email domain is the part after the @ sign. */
+  const char *email_domain;
+
+  /* The key url prefix will be used to get the public key from the issuer:
+     https://<key_url_prefix>/<issuer_email>
+     Therefore the key_url_prefix must NOT contain https://. */
+  const char *key_url_prefix;
+} grpc_jwt_verifier_email_domain_key_url_mapping;
+
+/* Globals to control the verifier. Not thread-safe. */
+extern gpr_timespec grpc_jwt_verifier_clock_skew;
+extern gpr_timespec grpc_jwt_verifier_max_delay;
+
+/* The verifier can be created with some custom mappings to help with key
+   discovery in the case where the issuer is an email address.
+   mappings can be NULL in which case num_mappings MUST be 0.
+   A verifier object has one built-in mapping (unless overridden):
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN ->
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX.*/
+grpc_jwt_verifier *grpc_jwt_verifier_create(
+    const grpc_jwt_verifier_email_domain_key_url_mapping *mappings,
+    size_t num_mappings);
+
+/*The verifier must not be destroyed if there are still outstanding callbacks.*/
+void grpc_jwt_verifier_destroy(grpc_jwt_verifier *verifier);
+
+/* User provided callback that will be called when the verification of the JWT
+   is done (maybe in another thread).
+   It is the responsibility of the callee to call grpc_jwt_claims_destroy on
+   the claims. */
+typedef void (*grpc_jwt_verification_done_cb)(void *user_data,
+                                              grpc_jwt_verifier_status status,
+                                              grpc_jwt_claims *claims);
+
+/* Verifies for the JWT for the given expected audience. */
+void grpc_jwt_verifier_verify(grpc_jwt_verifier *verifier,
+                              grpc_pollset *pollset, const char *jwt,
+                              const char *audience,
+                              grpc_jwt_verification_done_cb cb,
+                              void *user_data);
+
+/* --- TESTING ONLY exposed functions. --- */
+
+grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, gpr_slice buffer);
+grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims *claims,
+                                               const char *audience);
+
+#endif /* GRPC_INTERNAL_CORE_SECURITY_JWT_VERIFIER_H */
+

src/core/security/secure_endpoint.c

diff --git a/src/core/security/secure_endpoint.c b/src/core/security/secure_endpoint.c
index 73496d1..3548198 100644
--- a/src/core/security/secure_endpoint.c
+++ b/src/core/security/secure_endpoint.c
@@ -101,9 +101,7 @@
   if (grpc_trace_secure_endpoint) {
     size_t i;
     for (i = 0; i < nslices; i++) {
-      char *data =
-          gpr_hexdump((char *)GPR_SLICE_START_PTR(slices[i]),
-                      GPR_SLICE_LENGTH(slices[i]), GPR_HEXDUMP_PLAINTEXT);
+      char *data = gpr_dump_slice(slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
       gpr_log(GPR_DEBUG, "READ %p: %s", ep, data);
       gpr_free(data);
     }
@@ -235,9 +233,7 @@
 
   if (grpc_trace_secure_endpoint) {
     for (i = 0; i < nslices; i++) {
-      char *data =
-          gpr_hexdump((char *)GPR_SLICE_START_PTR(slices[i]),
-                      GPR_SLICE_LENGTH(slices[i]), GPR_HEXDUMP_PLAINTEXT);
+      char *data = gpr_dump_slice(slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
       gpr_log(GPR_DEBUG, "WRITE %p: %s", ep, data);
       gpr_free(data);
     }

src/core/security/security_context.c

diff --git a/src/core/security/security_context.c b/src/core/security/security_context.c
index 4d56549..8ce7876 100644
--- a/src/core/security/security_context.c
+++ b/src/core/security/security_context.c
@@ -69,12 +69,20 @@
   return GRPC_CALL_OK;
 }
 
-const grpc_auth_context *grpc_call_auth_context(grpc_call *call) {
+grpc_auth_context *grpc_call_auth_context(grpc_call *call) {
   void *sec_ctx = grpc_call_context_get(call, GRPC_CONTEXT_SECURITY);
   if (sec_ctx == NULL) return NULL;
   return grpc_call_is_client(call)
-             ? ((grpc_client_security_context *)sec_ctx)->auth_context
-             : ((grpc_server_security_context *)sec_ctx)->auth_context;
+             ? GRPC_AUTH_CONTEXT_REF(
+                   ((grpc_client_security_context *)sec_ctx)->auth_context,
+                   "grpc_call_auth_context client")
+             : GRPC_AUTH_CONTEXT_REF(
+                   ((grpc_server_security_context *)sec_ctx)->auth_context,
+                   "grpc_call_auth_context server");
+}
+
+void grpc_auth_context_release(grpc_auth_context *context) {
+  GRPC_AUTH_CONTEXT_UNREF(context, "grpc_auth_context_unref");
 }
 
 /* --- grpc_client_security_context --- */

src/core/security/security_context.h

diff --git a/src/core/security/security_context.h b/src/core/security/security_context.h
index 20c4390..76a4591 100644
--- a/src/core/security/security_context.h
+++ b/src/core/security/security_context.h
@@ -36,6 +36,10 @@
 
 #include "src/core/security/credentials.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* --- grpc_auth_context ---
 
    High level authentication context object. Can optionally be chained. */
@@ -103,5 +107,9 @@
 grpc_server_security_context *grpc_server_security_context_create(void);
 void grpc_server_security_context_destroy(void *ctx);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* GRPC_INTERNAL_CORE_SECURITY_SECURITY_CONTEXT_H */
 

src/core/support/slice.c

diff --git a/src/core/support/slice.c b/src/core/support/slice.c
index a2d62fc..e4196a4 100644
--- a/src/core/support/slice.c
+++ b/src/core/support/slice.c
@@ -325,3 +325,10 @@
   if (d != 0) return d;
   return memcmp(GPR_SLICE_START_PTR(a), b, b_length);
 }
+
+char *gpr_slice_to_cstring(gpr_slice slice) {
+  char *result = gpr_malloc(GPR_SLICE_LENGTH(slice) + 1);
+  memcpy(result, GPR_SLICE_START_PTR(slice), GPR_SLICE_LENGTH(slice));
+  result[GPR_SLICE_LENGTH(slice)] = '\0';
+  return result;
+}

src/core/support/string.c

diff --git a/src/core/support/string.c b/src/core/support/string.c
index 6a80ccc..09598da 100644
--- a/src/core/support/string.c
+++ b/src/core/support/string.c
@@ -61,14 +61,14 @@
   size_t capacity;
   size_t length;
   char *data;
-} hexout;
+} dump_out;
 
-static hexout hexout_create(void) {
-  hexout r = {0, 0, NULL};
+static dump_out dump_out_create(void) {
+  dump_out r = {0, 0, NULL};
   return r;
 }
 
-static void hexout_append(hexout *out, char c) {
+static void dump_out_append(dump_out *out, char c) {
   if (out->length == out->capacity) {
     out->capacity = GPR_MAX(8, 2 * out->capacity);
     out->data = gpr_realloc(out->data, out->capacity);
@@ -76,34 +76,55 @@
   out->data[out->length++] = c;
 }
 
-char *gpr_hexdump(const char *buf, size_t len, gpr_uint32 flags) {
+static void hexdump(dump_out *out, const char *buf, size_t len) {
   static const char hex[16] = "0123456789abcdef";
-  hexout out = hexout_create();
 
   const gpr_uint8 *const beg = (const gpr_uint8 *)buf;
   const gpr_uint8 *const end = beg + len;
   const gpr_uint8 *cur;
 
   for (cur = beg; cur != end; ++cur) {
-    if (cur != beg) hexout_append(&out, ' ');
-    hexout_append(&out, hex[*cur >> 4]);
-    hexout_append(&out, hex[*cur & 0xf]);
+    if (cur != beg) dump_out_append(out, ' ');
+    dump_out_append(out, hex[*cur >> 4]);
+    dump_out_append(out, hex[*cur & 0xf]);
   }
+}
 
-  if (flags & GPR_HEXDUMP_PLAINTEXT) {
-    if (len) hexout_append(&out, ' ');
-    hexout_append(&out, '\'');
-    for (cur = beg; cur != end; ++cur) {
-      hexout_append(&out, isprint(*cur) ? *(char*)cur : '.');
-    }
-    hexout_append(&out, '\'');
+static void asciidump(dump_out *out, const char *buf, size_t len) {
+  const gpr_uint8 *const beg = (const gpr_uint8 *)buf;
+  const gpr_uint8 *const end = beg + len;
+  const gpr_uint8 *cur;
+  int out_was_empty = (out->length == 0);
+  if (!out_was_empty) {
+    dump_out_append(out, ' ');
+    dump_out_append(out, '\'');
   }
+  for (cur = beg; cur != end; ++cur) {
+    dump_out_append(out, isprint(*cur) ? *(char *)cur : '.');
+  }
+  if (!out_was_empty) {
+    dump_out_append(out, '\'');
+  }
+}
 
-  hexout_append(&out, 0);
-
+char *gpr_dump(const char *buf, size_t len, gpr_uint32 flags) {
+  dump_out out = dump_out_create();
+  if (flags & GPR_DUMP_HEX) {
+    hexdump(&out, buf, len);
+  }
+  if (flags & GPR_DUMP_ASCII) {
+    asciidump(&out, buf, len);
+  }
+  dump_out_append(&out, 0);
   return out.data;
 }
 
+char *gpr_dump_slice(gpr_slice s, gpr_uint32 flags) {
+  return gpr_dump((const char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s),
+                  flags);
+}
+
+
 int gpr_parse_bytes_to_uint32(const char *buf, size_t len, gpr_uint32 *result) {
   gpr_uint32 out = 0;
   gpr_uint32 new;

src/core/support/string.h

diff --git a/src/core/support/string.h b/src/core/support/string.h
index 31e9fcb..d950d90 100644
--- a/src/core/support/string.h
+++ b/src/core/support/string.h
@@ -37,6 +37,7 @@
 #include <stddef.h>
 
 #include <grpc/support/port_platform.h>
+#include <grpc/support/slice.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -44,12 +45,16 @@
 
 /* String utility functions */
 
-/* flag to include plaintext after a hexdump */
-#define GPR_HEXDUMP_PLAINTEXT 0x00000001
+/* Flags for gpr_dump function. */
+#define GPR_DUMP_HEX   0x00000001
+#define GPR_DUMP_ASCII 0x00000002
 
-/* Converts array buf, of length len, into a hexadecimal dump. Result should
-   be freed with gpr_free() */
-char *gpr_hexdump(const char *buf, size_t len, gpr_uint32 flags);
+/* Converts array buf, of length len, into a C string  according to the flags.
+   Result should be freed with gpr_free() */
+char *gpr_dump(const char *buf, size_t len, gpr_uint32 flags);
+
+/* Calls gpr_dump on a slice. */
+char *gpr_dump_slice(gpr_slice slice, gpr_uint32 flags);
 
 /* Parses an array of bytes into an integer (base 10). Returns 1 on success,
    0 on failure. */

src/core/surface/call.c

diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index fc09137..fb3b0b1 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -298,8 +298,6 @@
   if (call->is_client) {
     call->request_set[GRPC_IOREQ_SEND_TRAILING_METADATA] = REQSET_DONE;
     call->request_set[GRPC_IOREQ_SEND_STATUS] = REQSET_DONE;
-    call->context[GRPC_CONTEXT_TRACING].value = grpc_census_context_create();
-    call->context[GRPC_CONTEXT_TRACING].destroy = grpc_census_context_destroy;
   }
   GPR_ASSERT(add_initial_metadata_count < MAX_SEND_INITIAL_METADATA_COUNT);
   for (i = 0; i < add_initial_metadata_count; i++) {
@@ -369,18 +367,18 @@
   gpr_mu_destroy(&c->mu);
   for (i = 0; i < STATUS_SOURCE_COUNT; i++) {
     if (c->status[i].details) {
-      grpc_mdstr_unref(c->status[i].details);
+      GRPC_MDSTR_UNREF(c->status[i].details);
     }
   }
   for (i = 0; i < c->owned_metadata_count; i++) {
-    grpc_mdelem_unref(c->owned_metadata[i]);
+    GRPC_MDELEM_UNREF(c->owned_metadata[i]);
   }
   gpr_free(c->owned_metadata);
   for (i = 0; i < GPR_ARRAY_SIZE(c->buffered_metadata); i++) {
     gpr_free(c->buffered_metadata[i].metadata);
   }
   for (i = 0; i < c->send_initial_metadata_count; i++) {
-    grpc_mdelem_unref(c->send_initial_metadata[i].md);
+    GRPC_MDELEM_UNREF(c->send_initial_metadata[i].md);
   }
   for (i = 0; i < GRPC_CONTEXT_COUNT; i++) {
     if (c->context[i].destroy) {
@@ -437,7 +435,7 @@
 static void set_status_details(grpc_call *call, status_source source,
                                grpc_mdstr *status) {
   if (call->status[source].details != NULL) {
-    grpc_mdstr_unref(call->status[source].details);
+    GRPC_MDSTR_UNREF(call->status[source].details);
   }
   call->status[source].details = status;
 }
@@ -616,7 +614,7 @@
         case GRPC_IOREQ_SEND_STATUS:
           if (call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details !=
               NULL) {
-            grpc_mdstr_unref(
+            GRPC_MDSTR_UNREF(
                 call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details);
             call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details =
                 NULL;
@@ -945,7 +943,7 @@
                 &mdb, &call->details_link,
                 grpc_mdelem_from_metadata_strings(
                     call->metadata_context,
-                    grpc_mdstr_ref(
+                    GRPC_MDSTR_REF(
                         grpc_channel_get_message_string(call->channel)),
                     data.send_status.details));
             call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details =
@@ -1053,7 +1051,7 @@
                       reqs[i].data.send_status.code);
       if (reqs[i].data.send_status.details) {
         set_status_details(call, STATUS_FROM_SERVER_STATUS,
-                           grpc_mdstr_ref(reqs[i].data.send_status.details));
+                           GRPC_MDSTR_REF(reqs[i].data.send_status.details));
       }
     }
     have_ops |= 1u << op;
@@ -1257,7 +1255,7 @@
     if (key == grpc_channel_get_status_string(call->channel)) {
       set_status_code(call, STATUS_FROM_WIRE, decode_status(md));
     } else if (key == grpc_channel_get_message_string(call->channel)) {
-      set_status_details(call, STATUS_FROM_WIRE, grpc_mdstr_ref(md->value));
+      set_status_details(call, STATUS_FROM_WIRE, GRPC_MDSTR_REF(md->value));
     } else if (key ==
                grpc_channel_get_compresssion_level_string(call->channel)) {
       set_decode_compression_level(call, decode_compression(md));
@@ -1293,10 +1291,10 @@
 
   grpc_mdctx_lock(mdctx);
   for (l = md->list.head; l; l = l->next) {
-    if (l->md) grpc_mdctx_locked_mdelem_unref(mdctx, l->md);
+    if (l->md) GRPC_MDCTX_LOCKED_MDELEM_UNREF(mdctx, l->md);
   }
   for (l = md->garbage.head; l; l = l->next) {
-    grpc_mdctx_locked_mdelem_unref(mdctx, l->md);
+    GRPC_MDCTX_LOCKED_MDELEM_UNREF(mdctx, l->md);
   }
   grpc_mdctx_unlock(mdctx);
 }

src/core/surface/call_log_batch.c

diff --git a/src/core/surface/call_log_batch.c b/src/core/surface/call_log_batch.c
index 5566329..997046d 100644
--- a/src/core/surface/call_log_batch.c
+++ b/src/core/surface/call_log_batch.c
@@ -46,8 +46,8 @@
     gpr_strvec_add(b, gpr_strdup(md[i].key));
 
     gpr_strvec_add(b, gpr_strdup(" value="));
-    gpr_strvec_add(b, gpr_hexdump(md[i].value, md[i].value_length,
-                                  GPR_HEXDUMP_PLAINTEXT));
+    gpr_strvec_add(b, gpr_dump(md[i].value, md[i].value_length,
+                               GPR_DUMP_HEX | GPR_DUMP_ASCII));
   }
 }
 

src/core/surface/channel.c

diff --git a/src/core/surface/channel.c b/src/core/surface/channel.c
index f8151c1..eeae3b5 100644
--- a/src/core/surface/channel.c
+++ b/src/core/surface/channel.c
@@ -104,7 +104,7 @@
     char buf[GPR_LTOA_MIN_BUFSIZE];
     gpr_ltoa(i, buf);
     channel->grpc_status_elem[i] = grpc_mdelem_from_metadata_strings(
-        mdctx, grpc_mdstr_ref(channel->grpc_status_string),
+        mdctx, GRPC_MDSTR_REF(channel->grpc_status_string),
         grpc_mdstr_from_string(mdctx, buf));
   }
   channel->path_string = grpc_mdstr_from_string(mdctx, ":path");
@@ -157,10 +157,10 @@
   return grpc_channel_create_call_internal(
       channel, cq,
       grpc_mdelem_from_metadata_strings(
-          channel->metadata_context, grpc_mdstr_ref(channel->path_string),
+          channel->metadata_context, GRPC_MDSTR_REF(channel->path_string),
           grpc_mdstr_from_string(channel->metadata_context, method)),
       grpc_mdelem_from_metadata_strings(
-          channel->metadata_context, grpc_mdstr_ref(channel->authority_string),
+          channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string),
           grpc_mdstr_from_string(channel->metadata_context, host)),
       deadline);
 }
@@ -169,10 +169,10 @@
                                  const char *host) {
   registered_call *rc = gpr_malloc(sizeof(registered_call));
   rc->path = grpc_mdelem_from_metadata_strings(
-      channel->metadata_context, grpc_mdstr_ref(channel->path_string),
+      channel->metadata_context, GRPC_MDSTR_REF(channel->path_string),
       grpc_mdstr_from_string(channel->metadata_context, method));
   rc->authority = grpc_mdelem_from_metadata_strings(
-      channel->metadata_context, grpc_mdstr_ref(channel->authority_string),
+      channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string),
       grpc_mdstr_from_string(channel->metadata_context, host));
   gpr_mu_lock(&channel->registered_call_mu);
   rc->next = channel->registered_calls;
@@ -186,8 +186,8 @@
     void *registered_call_handle, gpr_timespec deadline) {
   registered_call *rc = registered_call_handle;
   return grpc_channel_create_call_internal(
-      channel, completion_queue, grpc_mdelem_ref(rc->path),
-      grpc_mdelem_ref(rc->authority), deadline);
+      channel, completion_queue, GRPC_MDELEM_REF(rc->path),
+      GRPC_MDELEM_REF(rc->authority), deadline);
 }
 
 #ifdef GRPC_CHANNEL_REF_COUNT_DEBUG
@@ -205,18 +205,18 @@
   size_t i;
   grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CHANNEL(channel));
   for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
-    grpc_mdelem_unref(channel->grpc_status_elem[i]);
+    GRPC_MDELEM_UNREF(channel->grpc_status_elem[i]);
   }
-  grpc_mdstr_unref(channel->grpc_status_string);
-  grpc_mdstr_unref(channel->grpc_compression_level_string);
-  grpc_mdstr_unref(channel->grpc_message_string);
-  grpc_mdstr_unref(channel->path_string);
-  grpc_mdstr_unref(channel->authority_string);
+  GRPC_MDSTR_UNREF(channel->grpc_status_string);
+  GRPC_MDSTR_UNREF(channel->grpc_compression_level_string);
+  GRPC_MDSTR_UNREF(channel->grpc_message_string);
+  GRPC_MDSTR_UNREF(channel->path_string);
+  GRPC_MDSTR_UNREF(channel->authority_string);
   while (channel->registered_calls) {
     registered_call *rc = channel->registered_calls;
     channel->registered_calls = rc->next;
-    grpc_mdelem_unref(rc->path);
-    grpc_mdelem_unref(rc->authority);
+    GRPC_MDELEM_UNREF(rc->path);
+    GRPC_MDELEM_UNREF(rc->authority);
     gpr_free(rc);
   }
   grpc_mdctx_unref(channel->metadata_context);
@@ -267,12 +267,12 @@
 
 grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel, int i) {
   if (i >= 0 && i < NUM_CACHED_STATUS_ELEMS) {
-    return grpc_mdelem_ref(channel->grpc_status_elem[i]);
+    return GRPC_MDELEM_REF(channel->grpc_status_elem[i]);
   } else {
     char tmp[GPR_LTOA_MIN_BUFSIZE];
     gpr_ltoa(i, tmp);
     return grpc_mdelem_from_metadata_strings(
-        channel->metadata_context, grpc_mdstr_ref(channel->grpc_status_string),
+        channel->metadata_context, GRPC_MDSTR_REF(channel->grpc_status_string),
         grpc_mdstr_from_string(channel->metadata_context, tmp));
   }
 }

src/core/surface/server.c

diff --git a/src/core/surface/server.c b/src/core/surface/server.c
index f29d47c..adc7ef8 100644
--- a/src/core/surface/server.c
+++ b/src/core/surface/server.c
@@ -51,7 +51,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-typedef enum { PENDING_START, ALL_CALLS, CALL_LIST_COUNT } call_list;
+typedef enum { PENDING_START, CALL_LIST_COUNT } call_list;
 
 typedef struct listener {
   void *arg;
@@ -114,7 +114,6 @@
 
 struct channel_data {
   grpc_server *server;
-  size_t num_calls;
   grpc_connectivity_state connectivity_state;
   grpc_channel *channel;
   grpc_mdstr *path_key;
@@ -167,6 +166,9 @@
   listener *listeners;
   int listeners_destroyed;
   gpr_refcount internal_refcount;
+
+  /** when did we print the last shutdown progress message */
+  gpr_timespec last_shutdown_message_time;
 };
 
 typedef enum {
@@ -183,7 +185,11 @@
 struct call_data {
   grpc_call *call;
 
+  /** protects state */
+  gpr_mu mu_state;
+  /** the current state of a call - see call_state */
   call_state state;
+
   grpc_mdstr *path;
   grpc_mdstr *host;
   gpr_timespec deadline;
@@ -204,9 +210,7 @@
 
 typedef struct {
   grpc_channel **channels;
-  grpc_channel **disconnects;
   size_t num_channels;
-  size_t num_disconnects;
 } channel_broadcaster;
 
 #define SERVER_FROM_CALL_ELEM(elem) \
@@ -225,26 +229,15 @@
 static void channel_broadcaster_init(grpc_server *s, channel_broadcaster *cb) {
   channel_data *c;
   size_t count = 0;
-  size_t dc_count = 0;
   for (c = s->root_channel_data.next; c != &s->root_channel_data; c = c->next) {
     count++;
-    if (c->num_calls == 0) {
-      dc_count++;
-    }
   }
   cb->num_channels = count;
-  cb->num_disconnects = dc_count;
   cb->channels = gpr_malloc(sizeof(*cb->channels) * cb->num_channels);
-  cb->disconnects = gpr_malloc(sizeof(*cb->channels) * cb->num_disconnects);
   count = 0;
-  dc_count = 0;
   for (c = s->root_channel_data.next; c != &s->root_channel_data; c = c->next) {
     cb->channels[count++] = c->channel;
     GRPC_CHANNEL_INTERNAL_REF(c->channel, "broadcast");
-    if (c->num_calls == 0) {
-      cb->disconnects[dc_count++] = c->channel;
-      GRPC_CHANNEL_INTERNAL_REF(c->channel, "broadcast-disconnect");
-    }
   }
 }
 
@@ -280,19 +273,14 @@
 }
 
 static void channel_broadcaster_shutdown(channel_broadcaster *cb,
-                                         int send_goaway, int send_disconnect) {
+                                         int send_goaway, int force_disconnect) {
   size_t i;
 
   for (i = 0; i < cb->num_channels; i++) {
-    send_shutdown(cb->channels[i], 1, 0);
+    send_shutdown(cb->channels[i], send_goaway, force_disconnect);
     GRPC_CHANNEL_INTERNAL_UNREF(cb->channels[i], "broadcast");
   }
-  for (i = 0; i < cb->num_disconnects; i++) {
-    send_shutdown(cb->disconnects[i], 0, 1);
-    GRPC_CHANNEL_INTERNAL_UNREF(cb->channels[i], "broadcast-disconnect");
-  }
   gpr_free(cb->channels);
-  gpr_free(cb->disconnects);
 }
 
 /* call list */
@@ -422,19 +410,23 @@
   grpc_iomgr_add_callback(&chand->finish_destroy_channel_closure);
 }
 
-static void finish_start_new_rpc_and_unlock(grpc_server *server,
-                                            grpc_call_element *elem,
-                                            call_data **pending_root,
-                                            requested_call_array *array) {
+static void finish_start_new_rpc(grpc_server *server, grpc_call_element *elem,
+                                 call_data **pending_root,
+                                 requested_call_array *array) {
   requested_call rc;
   call_data *calld = elem->call_data;
+  gpr_mu_lock(&server->mu_call);
   if (array->count == 0) {
+    gpr_mu_lock(&calld->mu_state);
     calld->state = PENDING;
+    gpr_mu_unlock(&calld->mu_state);
     call_list_join(pending_root, calld, PENDING_START);
     gpr_mu_unlock(&server->mu_call);
   } else {
     rc = array->calls[--array->count];
+    gpr_mu_lock(&calld->mu_state);
     calld->state = ACTIVATED;
+    gpr_mu_unlock(&calld->mu_state);
     gpr_mu_unlock(&server->mu_call);
     begin_call(server, calld, &rc);
   }
@@ -448,20 +440,18 @@
   gpr_uint32 hash;
   channel_registered_method *rm;
 
-  gpr_mu_lock(&server->mu_call);
   if (chand->registered_methods && calld->path && calld->host) {
     /* TODO(ctiller): unify these two searches */
     /* check for an exact match with host */
     hash = GRPC_MDSTR_KV_HASH(calld->host->hash, calld->path->hash);
-    for (i = 0; i < chand->registered_method_max_probes; i++) {
+    for (i = 0; i <= chand->registered_method_max_probes; i++) {
       rm = &chand->registered_methods[(hash + i) %
                                       chand->registered_method_slots];
       if (!rm) break;
       if (rm->host != calld->host) continue;
       if (rm->method != calld->path) continue;
-      finish_start_new_rpc_and_unlock(server, elem,
-                                      &rm->server_registered_method->pending,
-                                      &rm->server_registered_method->requested);
+      finish_start_new_rpc(server, elem, &rm->server_registered_method->pending,
+                           &rm->server_registered_method->requested);
       return;
     }
     /* check for a wildcard method definition (no host set) */
@@ -472,14 +462,13 @@
       if (!rm) break;
       if (rm->host != NULL) continue;
       if (rm->method != calld->path) continue;
-      finish_start_new_rpc_and_unlock(server, elem,
-                                      &rm->server_registered_method->pending,
-                                      &rm->server_registered_method->requested);
+      finish_start_new_rpc(server, elem, &rm->server_registered_method->pending,
+                           &rm->server_registered_method->requested);
       return;
     }
   }
-  finish_start_new_rpc_and_unlock(server, elem, &server->lists[PENDING_START],
-                                  &server->requested_calls);
+  finish_start_new_rpc(server, elem, &server->lists[PENDING_START],
+                       &server->requested_calls);
 }
 
 static void kill_zombie(void *elem, int success) {
@@ -495,29 +484,35 @@
   return n;
 }
 
+static int num_channels(grpc_server *server) {
+  channel_data *chand;
+  int n = 0;
+  for (chand = server->root_channel_data.next;
+       chand != &server->root_channel_data; chand = chand->next) {
+    n++;
+  }
+  return n;
+}
+
 static void maybe_finish_shutdown(grpc_server *server) {
   size_t i;
   if (!server->shutdown || server->shutdown_published) {
     return;
   }
 
-  gpr_mu_lock(&server->mu_call);
-  if (server->lists[ALL_CALLS] != NULL) {
-    gpr_log(GPR_DEBUG,
-            "Waiting for all calls to finish before destroying server");
-    gpr_mu_unlock(&server->mu_call);
-    return;
-  }
-  gpr_mu_unlock(&server->mu_call);
-
-  if (server->root_channel_data.next != &server->root_channel_data) {
-    gpr_log(GPR_DEBUG,
-            "Waiting for all channels to close before destroying server");
-    return;
-  }
-  if (server->listeners_destroyed < num_listeners(server)) {
-    gpr_log(GPR_DEBUG, "Waiting for all listeners to be destroyed (@ %d/%d)",
-            server->listeners_destroyed, num_listeners(server));
+  if (server->root_channel_data.next != &server->root_channel_data ||
+      server->listeners_destroyed < num_listeners(server)) {
+    if (gpr_time_cmp(
+            gpr_time_sub(gpr_now(), server->last_shutdown_message_time),
+            gpr_time_from_seconds(1)) >= 0) {
+      server->last_shutdown_message_time = gpr_now();
+      gpr_log(GPR_DEBUG,
+              "Waiting for %d channels and %d/%d listeners to be destroyed"
+              " before shutting down server",
+              num_channels(server),
+              num_listeners(server) - server->listeners_destroyed,
+              num_listeners(server));
+    }
     return;
   }
   server->shutdown_published = 1;
@@ -532,31 +527,19 @@
   channel_data *chand = elem->channel_data;
   call_data *calld = elem->call_data;
   if (md->key == chand->path_key) {
-    calld->path = grpc_mdstr_ref(md->value);
+    calld->path = GRPC_MDSTR_REF(md->value);
     return NULL;
   } else if (md->key == chand->authority_key) {
-    calld->host = grpc_mdstr_ref(md->value);
+    calld->host = GRPC_MDSTR_REF(md->value);
     return NULL;
   }
   return md;
 }
 
-static int decrement_call_count(channel_data *chand) {
-  int disconnect = 0;
-  chand->num_calls--;
-  if (0 == chand->num_calls && chand->server->shutdown) {
-    disconnect = 1;
-  }
-  maybe_finish_shutdown(chand->server);
-  return disconnect;
-}
-
 static void server_on_recv(void *ptr, int success) {
   grpc_call_element *elem = ptr;
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
-  int remove_res;
-  int disconnect = 0;
 
   if (success && !calld->got_initial_metadata) {
     size_t i;
@@ -581,39 +564,33 @@
     case GRPC_STREAM_SEND_CLOSED:
       break;
     case GRPC_STREAM_RECV_CLOSED:
-      gpr_mu_lock(&chand->server->mu_call);
+      gpr_mu_lock(&calld->mu_state);
       if (calld->state == NOT_STARTED) {
         calld->state = ZOMBIED;
+        gpr_mu_unlock(&calld->mu_state);
         grpc_iomgr_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
         grpc_iomgr_add_callback(&calld->kill_zombie_closure);
+      } else {
+        gpr_mu_unlock(&calld->mu_state);
       }
-      gpr_mu_unlock(&chand->server->mu_call);
       break;
     case GRPC_STREAM_CLOSED:
-      gpr_mu_lock(&chand->server->mu_call);
+      gpr_mu_lock(&calld->mu_state);
       if (calld->state == NOT_STARTED) {
         calld->state = ZOMBIED;
+        gpr_mu_unlock(&calld->mu_state);
         grpc_iomgr_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
         grpc_iomgr_add_callback(&calld->kill_zombie_closure);
       } else if (calld->state == PENDING) {
-        call_list_remove(calld, PENDING_START);
         calld->state = ZOMBIED;
+        gpr_mu_unlock(&calld->mu_state);
+        gpr_mu_lock(&chand->server->mu_call);
+        call_list_remove(calld, PENDING_START);
+        gpr_mu_unlock(&chand->server->mu_call);
         grpc_iomgr_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
         grpc_iomgr_add_callback(&calld->kill_zombie_closure);
-      }
-      remove_res = call_list_remove(calld, ALL_CALLS);
-      gpr_mu_unlock(&chand->server->mu_call);
-      gpr_mu_lock(&chand->server->mu_global);
-      if (remove_res) {
-        disconnect = decrement_call_count(chand);
-        if (disconnect) {
-          GRPC_CHANNEL_INTERNAL_REF(chand->channel, "send-disconnect");
-        }
-      }
-      gpr_mu_unlock(&chand->server->mu_global);
-      if (disconnect) {
-        send_shutdown(chand->channel, 0, 1);
-        GRPC_CHANNEL_INTERNAL_UNREF(chand->channel, "send-disconnect");
+      } else {
+        gpr_mu_unlock(&calld->mu_state);
       }
       break;
   }
@@ -676,17 +653,10 @@
   memset(calld, 0, sizeof(call_data));
   calld->deadline = gpr_inf_future;
   calld->call = grpc_call_from_top_element(elem);
+  gpr_mu_init(&calld->mu_state);
 
   grpc_iomgr_closure_init(&calld->server_on_recv, server_on_recv, elem);
 
-  gpr_mu_lock(&chand->server->mu_call);
-  call_list_join(&chand->server->lists[ALL_CALLS], calld, ALL_CALLS);
-  gpr_mu_unlock(&chand->server->mu_call);
-
-  gpr_mu_lock(&chand->server->mu_global);
-  chand->num_calls++;
-  gpr_mu_unlock(&chand->server->mu_global);
-
   server_ref(chand->server);
 
   if (initial_op) server_mutate_op(elem, initial_op);
@@ -695,27 +665,22 @@
 static void destroy_call_elem(grpc_call_element *elem) {
   channel_data *chand = elem->channel_data;
   call_data *calld = elem->call_data;
-  int removed[CALL_LIST_COUNT];
-  size_t i;
 
-  gpr_mu_lock(&chand->server->mu_call);
-  for (i = 0; i < CALL_LIST_COUNT; i++) {
-    removed[i] = call_list_remove(elem->call_data, i);
-  }
-  gpr_mu_unlock(&chand->server->mu_call);
-  if (removed[ALL_CALLS]) {
-    gpr_mu_lock(&chand->server->mu_global);
-    decrement_call_count(chand);
-    gpr_mu_unlock(&chand->server->mu_global);
+  if (calld->state == PENDING) {
+    gpr_mu_lock(&chand->server->mu_call);
+    call_list_remove(elem->call_data, PENDING_START);
+    gpr_mu_unlock(&chand->server->mu_call);
   }
 
   if (calld->host) {
-    grpc_mdstr_unref(calld->host);
+    GRPC_MDSTR_UNREF(calld->host);
   }
   if (calld->path) {
-    grpc_mdstr_unref(calld->path);
+    GRPC_MDSTR_UNREF(calld->path);
   }
 
+  gpr_mu_destroy(&calld->mu_state);
+
   server_unref(chand->server);
 }
 
@@ -727,7 +692,6 @@
   GPR_ASSERT(is_first);
   GPR_ASSERT(!is_last);
   chand->server = NULL;
-  chand->num_calls = 0;
   chand->channel = NULL;
   chand->path_key = grpc_mdstr_from_string(metadata_context, ":path");
   chand->authority_key = grpc_mdstr_from_string(metadata_context, ":authority");
@@ -744,10 +708,10 @@
   if (chand->registered_methods) {
     for (i = 0; i < chand->registered_method_slots; i++) {
       if (chand->registered_methods[i].method) {
-        grpc_mdstr_unref(chand->registered_methods[i].method);
+        GRPC_MDSTR_UNREF(chand->registered_methods[i].method);
       }
       if (chand->registered_methods[i].host) {
-        grpc_mdstr_unref(chand->registered_methods[i].host);
+        GRPC_MDSTR_UNREF(chand->registered_methods[i].host);
       }
     }
     gpr_free(chand->registered_methods);
@@ -759,8 +723,8 @@
     chand->next = chand->prev = chand;
     maybe_finish_shutdown(chand->server);
     gpr_mu_unlock(&chand->server->mu_global);
-    grpc_mdstr_unref(chand->path_key);
-    grpc_mdstr_unref(chand->authority_key);
+    GRPC_MDSTR_UNREF(chand->path_key);
+    GRPC_MDSTR_UNREF(chand->authority_key);
     server_unref(chand->server);
   }
 }
@@ -998,6 +962,8 @@
     return;
   }
 
+  server->last_shutdown_message_time = gpr_now();
+
   channel_broadcaster_init(server, &broadcaster);
 
   /* collect all unregistered then registered calls */
@@ -1049,47 +1015,13 @@
 }
 
 void grpc_server_cancel_all_calls(grpc_server *server) {
-  call_data *calld;
-  grpc_call **calls;
-  size_t call_count;
-  size_t call_capacity;
-  int is_first = 1;
-  size_t i;
+  channel_broadcaster broadcaster;
 
-  gpr_mu_lock(&server->mu_call);
+  gpr_mu_lock(&server->mu_global);
+  channel_broadcaster_init(server, &broadcaster);
+  gpr_mu_unlock(&server->mu_global);
 
-  GPR_ASSERT(server->shutdown);
-
-  if (!server->lists[ALL_CALLS]) {
-    gpr_mu_unlock(&server->mu_call);
-    return;
-  }
-
-  call_capacity = 8;
-  call_count = 0;
-  calls = gpr_malloc(sizeof(grpc_call *) * call_capacity);
-
-  for (calld = server->lists[ALL_CALLS];
-       calld != server->lists[ALL_CALLS] || is_first;
-       calld = calld->links[ALL_CALLS].next) {
-    if (call_count == call_capacity) {
-      call_capacity *= 2;
-      calls = gpr_realloc(calls, sizeof(grpc_call *) * call_capacity);
-    }
-    calls[call_count++] = calld->call;
-    GRPC_CALL_INTERNAL_REF(calld->call, "cancel_all");
-    is_first = 0;
-  }
-
-  gpr_mu_unlock(&server->mu_call);
-
-  for (i = 0; i < call_count; i++) {
-    grpc_call_cancel_with_status(calls[i], GRPC_STATUS_UNAVAILABLE,
-                                 "Unavailable");
-    GRPC_CALL_INTERNAL_UNREF(calls[i], "cancel_all", 1);
-  }
-
-  gpr_free(calls);
+  channel_broadcaster_shutdown(&broadcaster, 0, 1);
 }
 
 void grpc_server_destroy(grpc_server *server) {
@@ -1145,10 +1077,12 @@
       requested_calls = &rc->data.registered.registered_method->requested;
       break;
   }
-  if (calld) {
+  if (calld != NULL) {
+    gpr_mu_unlock(&server->mu_call);
+    gpr_mu_lock(&calld->mu_state);
     GPR_ASSERT(calld->state == PENDING);
     calld->state = ACTIVATED;
-    gpr_mu_unlock(&server->mu_call);
+    gpr_mu_unlock(&calld->mu_state);
     begin_call(server, calld, rc);
     return GRPC_CALL_OK;
   } else {

src/core/transport/chttp2/hpack_parser.c

diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/transport/chttp2/hpack_parser.c
index b8ab664..f8bff42 100644
--- a/src/core/transport/chttp2/hpack_parser.c
+++ b/src/core/transport/chttp2/hpack_parser.c
@@ -622,7 +622,7 @@
 static void on_hdr(grpc_chttp2_hpack_parser *p, grpc_mdelem *md,
                    int add_to_table) {
   if (add_to_table) {
-    grpc_mdelem_ref(md);
+    GRPC_MDELEM_REF(md);
     grpc_chttp2_hptbl_add(&p->table, md);
   }
   p->on_header(p->on_header_user_data, md);
@@ -711,7 +711,7 @@
 static int finish_indexed_field(grpc_chttp2_hpack_parser *p,
                                 const gpr_uint8 *cur, const gpr_uint8 *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
-  grpc_mdelem_ref(md);
+  GRPC_MDELEM_REF(md);
   on_hdr(p, md, 0);
   return parse_begin(p, cur, end);
 }
@@ -740,7 +740,7 @@
                                 const gpr_uint8 *cur, const gpr_uint8 *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   on_hdr(p, grpc_mdelem_from_metadata_strings(p->table.mdctx,
-                                              grpc_mdstr_ref(md->key),
+                                              GRPC_MDSTR_REF(md->key),
                                               take_string(p, &p->value)),
          1);
   return parse_begin(p, cur, end);
@@ -793,7 +793,7 @@
                                 const gpr_uint8 *cur, const gpr_uint8 *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   on_hdr(p, grpc_mdelem_from_metadata_strings(p->table.mdctx,
-                                              grpc_mdstr_ref(md->key),
+                                              GRPC_MDSTR_REF(md->key),
                                               take_string(p, &p->value)),
          0);
   return parse_begin(p, cur, end);
@@ -846,7 +846,7 @@
                                 const gpr_uint8 *cur, const gpr_uint8 *end) {
   grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   on_hdr(p, grpc_mdelem_from_metadata_strings(p->table.mdctx,
-                                              grpc_mdstr_ref(md->key),
+                                              GRPC_MDSTR_REF(md->key),
                                               take_string(p, &p->value)),
          0);
   return parse_begin(p, cur, end);
@@ -1329,17 +1329,14 @@
 /* PUBLIC INTERFACE */
 
 static void on_header_not_set(void *user_data, grpc_mdelem *md) {
-  char *keyhex =
-      gpr_hexdump(grpc_mdstr_as_c_string(md->key),
-                  GPR_SLICE_LENGTH(md->key->slice), GPR_HEXDUMP_PLAINTEXT);
+  char *keyhex = gpr_dump_slice(md->key->slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
   char *valuehex =
-      gpr_hexdump(grpc_mdstr_as_c_string(md->value),
-                  GPR_SLICE_LENGTH(md->value->slice), GPR_HEXDUMP_PLAINTEXT);
+      gpr_dump_slice(md->value->slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
   gpr_log(GPR_ERROR, "on_header callback not set; key=%s value=%s", keyhex,
           valuehex);
   gpr_free(keyhex);
   gpr_free(valuehex);
-  grpc_mdelem_unref(md);
+  GRPC_MDELEM_UNREF(md);
   abort();
 }
 

src/core/transport/chttp2/hpack_table.c

diff --git a/src/core/transport/chttp2/hpack_table.c b/src/core/transport/chttp2/hpack_table.c
index 372e71d..4fc1543 100644
--- a/src/core/transport/chttp2/hpack_table.c
+++ b/src/core/transport/chttp2/hpack_table.c
@@ -122,10 +122,10 @@
 void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl) {
   size_t i;
   for (i = 0; i < GRPC_CHTTP2_LAST_STATIC_ENTRY; i++) {
-    grpc_mdelem_unref(tbl->static_ents[i]);
+    GRPC_MDELEM_UNREF(tbl->static_ents[i]);
   }
   for (i = 0; i < tbl->num_ents; i++) {
-    grpc_mdelem_unref(
+    GRPC_MDELEM_UNREF(
         tbl->ents[(tbl->first_ent + i) % GRPC_CHTTP2_MAX_TABLE_COUNT]);
   }
 }
@@ -155,7 +155,7 @@
                    GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
   tbl->first_ent = (tbl->first_ent + 1) % GRPC_CHTTP2_MAX_TABLE_COUNT;
   tbl->num_ents--;
-  grpc_mdelem_unref(first_ent);
+  GRPC_MDELEM_UNREF(first_ent);
 }
 
 void grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, grpc_mdelem *md) {

src/core/transport/chttp2/incoming_metadata.c

diff --git a/src/core/transport/chttp2/incoming_metadata.c b/src/core/transport/chttp2/incoming_metadata.c
index 68e0912..77162a6 100644
--- a/src/core/transport/chttp2/incoming_metadata.c
+++ b/src/core/transport/chttp2/incoming_metadata.c
@@ -49,7 +49,7 @@
     grpc_chttp2_incoming_metadata_buffer *buffer) {
   size_t i;
   for (i = 0; i < buffer->count; i++) {
-    grpc_mdelem_unref(buffer->elems[i].md);
+    GRPC_MDELEM_UNREF(buffer->elems[i].md);
   }
   gpr_free(buffer->elems);
 }

src/core/transport/chttp2/internal.h

diff --git a/src/core/transport/chttp2/internal.h b/src/core/transport/chttp2/internal.h
index 7f98a5b..bdd4b43 100644
--- a/src/core/transport/chttp2/internal.h
+++ b/src/core/transport/chttp2/internal.h
@@ -173,6 +173,8 @@
 
   /** have we seen a goaway */
   gpr_uint8 seen_goaway;
+  /** have we sent a goaway */
+  gpr_uint8 sent_goaway;
 
   /** is this transport a client? */
   gpr_uint8 is_client;
@@ -557,8 +559,10 @@
 
 void grpc_chttp2_register_stream(grpc_chttp2_transport *t,
                                  grpc_chttp2_stream *s);
-void grpc_chttp2_unregister_stream(grpc_chttp2_transport *t,
-                                   grpc_chttp2_stream *s);
+/* returns 1 if this is the last stream, 0 otherwise */
+int grpc_chttp2_unregister_stream(grpc_chttp2_transport *t,
+                                  grpc_chttp2_stream *s) GRPC_MUST_USE_RESULT;
+int grpc_chttp2_has_streams(grpc_chttp2_transport *t);
 void grpc_chttp2_for_all_streams(
     grpc_chttp2_transport_global *transport_global, void *user_data,
     void (*cb)(grpc_chttp2_transport_global *transport_global, void *user_data,

src/core/transport/chttp2/parsing.c

diff --git a/src/core/transport/chttp2/parsing.c b/src/core/transport/chttp2/parsing.c
index 4664a08..130167f 100644
--- a/src/core/transport/chttp2/parsing.c
+++ b/src/core/transport/chttp2/parsing.c
@@ -463,7 +463,7 @@
   return GRPC_CHTTP2_PARSE_OK;
 }
 
-static void skip_header(void *tp, grpc_mdelem *md) { grpc_mdelem_unref(md); }
+static void skip_header(void *tp, grpc_mdelem *md) { GRPC_MDELEM_UNREF(md); }
 
 static int init_skip_frame_parser(
     grpc_chttp2_transport_parsing *transport_parsing, int is_header) {
@@ -600,7 +600,7 @@
     grpc_chttp2_incoming_metadata_buffer_set_deadline(
         &stream_parsing->incoming_metadata,
         gpr_time_add(gpr_now(), *cached_timeout));
-    grpc_mdelem_unref(md);
+    GRPC_MDELEM_UNREF(md);
   } else {
     grpc_chttp2_incoming_metadata_buffer_add(&stream_parsing->incoming_metadata,
                                              md);

src/core/transport/chttp2/stream_encoder.c

diff --git a/src/core/transport/chttp2/stream_encoder.c b/src/core/transport/chttp2/stream_encoder.c
index cf78ac5..56ab820 100644
--- a/src/core/transport/chttp2/stream_encoder.c
+++ b/src/core/transport/chttp2/stream_encoder.c
@@ -247,19 +247,19 @@
   } else if (c->entries_keys[HASH_FRAGMENT_3(key_hash)] == elem->key) {
     c->indices_keys[HASH_FRAGMENT_3(key_hash)] = new_index;
   } else if (c->entries_keys[HASH_FRAGMENT_2(key_hash)] == NULL) {
-    c->entries_keys[HASH_FRAGMENT_2(key_hash)] = grpc_mdstr_ref(elem->key);
+    c->entries_keys[HASH_FRAGMENT_2(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_2(key_hash)] = new_index;
   } else if (c->entries_keys[HASH_FRAGMENT_3(key_hash)] == NULL) {
-    c->entries_keys[HASH_FRAGMENT_3(key_hash)] = grpc_mdstr_ref(elem->key);
+    c->entries_keys[HASH_FRAGMENT_3(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_3(key_hash)] = new_index;
   } else if (c->indices_keys[HASH_FRAGMENT_2(key_hash)] <
              c->indices_keys[HASH_FRAGMENT_3(key_hash)]) {
-    grpc_mdstr_unref(c->entries_keys[HASH_FRAGMENT_2(key_hash)]);
-    c->entries_keys[HASH_FRAGMENT_2(key_hash)] = grpc_mdstr_ref(elem->key);
+    GRPC_MDSTR_UNREF(c->entries_keys[HASH_FRAGMENT_2(key_hash)]);
+    c->entries_keys[HASH_FRAGMENT_2(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_2(key_hash)] = new_index;
   } else {
-    grpc_mdstr_unref(c->entries_keys[HASH_FRAGMENT_3(key_hash)]);
-    c->entries_keys[HASH_FRAGMENT_3(key_hash)] = grpc_mdstr_ref(elem->key);
+    GRPC_MDSTR_UNREF(c->entries_keys[HASH_FRAGMENT_3(key_hash)]);
+    c->entries_keys[HASH_FRAGMENT_3(key_hash)] = GRPC_MDSTR_REF(elem->key);
     c->indices_keys[HASH_FRAGMENT_3(key_hash)] = new_index;
   }
 
@@ -439,10 +439,10 @@
   grpc_mdelem *mdelem;
   grpc_chttp2_encode_timeout(gpr_time_sub(deadline, gpr_now()), timeout_str);
   mdelem = grpc_mdelem_from_metadata_strings(
-      c->mdctx, grpc_mdstr_ref(c->timeout_key_str),
+      c->mdctx, GRPC_MDSTR_REF(c->timeout_key_str),
       grpc_mdstr_from_string(c->mdctx, timeout_str));
   mdelem = hpack_enc(c, mdelem, st);
-  if (mdelem) grpc_mdelem_unref(mdelem);
+  if (mdelem) GRPC_MDELEM_UNREF(mdelem);
 }
 
 gpr_slice grpc_chttp2_data_frame_create_empty_close(gpr_uint32 id) {
@@ -461,10 +461,10 @@
 void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor *c) {
   int i;
   for (i = 0; i < GRPC_CHTTP2_HPACKC_NUM_VALUES; i++) {
-    if (c->entries_keys[i]) grpc_mdstr_unref(c->entries_keys[i]);
-    if (c->entries_elems[i]) grpc_mdelem_unref(c->entries_elems[i]);
+    if (c->entries_keys[i]) GRPC_MDSTR_UNREF(c->entries_keys[i]);
+    if (c->entries_elems[i]) GRPC_MDELEM_UNREF(c->entries_elems[i]);
   }
-  grpc_mdstr_unref(c->timeout_key_str);
+  GRPC_MDSTR_UNREF(c->timeout_key_str);
 }
 
 gpr_uint32 grpc_chttp2_preencode(grpc_stream_op *inops, size_t *inops_count,
@@ -620,10 +620,10 @@
       op = &ops[unref_op];
       if (op->type != GRPC_OP_METADATA) continue;
       for (l = op->data.metadata.list.head; l; l = l->next) {
-        if (l->md) grpc_mdctx_locked_mdelem_unref(mdctx, l->md);
+        if (l->md) GRPC_MDCTX_LOCKED_MDELEM_UNREF(mdctx, l->md);
       }
       for (l = op->data.metadata.garbage.head; l; l = l->next) {
-        grpc_mdctx_locked_mdelem_unref(mdctx, l->md);
+        GRPC_MDCTX_LOCKED_MDELEM_UNREF(mdctx, l->md);
       }
     }
     grpc_mdctx_unlock(mdctx);

src/core/transport/chttp2/stream_lists.c

diff --git a/src/core/transport/chttp2/stream_lists.c b/src/core/transport/chttp2/stream_lists.c
index 85691b3..4fea058 100644
--- a/src/core/transport/chttp2/stream_lists.c
+++ b/src/core/transport/chttp2/stream_lists.c
@@ -354,9 +354,14 @@
   stream_list_add_tail(t, s, GRPC_CHTTP2_LIST_ALL_STREAMS);
 }
 
-void grpc_chttp2_unregister_stream(grpc_chttp2_transport *t,
+int grpc_chttp2_unregister_stream(grpc_chttp2_transport *t,
                                    grpc_chttp2_stream *s) {
-  stream_list_remove(t, s, GRPC_CHTTP2_LIST_ALL_STREAMS);
+  stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_ALL_STREAMS);
+  return stream_list_empty(t, GRPC_CHTTP2_LIST_ALL_STREAMS);
+}
+
+int grpc_chttp2_has_streams(grpc_chttp2_transport *t) {
+  return !stream_list_empty(t, GRPC_CHTTP2_LIST_ALL_STREAMS);
 }
 
 void grpc_chttp2_for_all_streams(

src/core/transport/chttp2_transport.c

diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c
index 3483512..ac399e4 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/transport/chttp2_transport.c
@@ -139,7 +139,7 @@
   grpc_chttp2_hpack_parser_destroy(&t->parsing.hpack_parser);
   grpc_chttp2_goaway_parser_destroy(&t->parsing.goaway_parser);
 
-  grpc_mdstr_unref(t->parsing.str_grpc_timeout);
+  GRPC_MDSTR_UNREF(t->parsing.str_grpc_timeout);
 
   for (i = 0; i < STREAM_LIST_COUNT; i++) {
     GPR_ASSERT(t->lists[i].head == NULL);
@@ -382,7 +382,9 @@
   GPR_ASSERT(s->global.published_state == GRPC_STREAM_CLOSED ||
              s->global.id == 0);
   GPR_ASSERT(!s->global.in_stream_map);
-  grpc_chttp2_unregister_stream(t, s);
+  if (grpc_chttp2_unregister_stream(t, s) && t->global.sent_goaway) {
+    close_transport_locked(t);
+  }
   if (!t->parsing_active && s->global.id) {
     GPR_ASSERT(grpc_chttp2_stream_map_find(&t->parsing_stream_map,
                                            s->global.id) == NULL);
@@ -521,8 +523,7 @@
 void grpc_chttp2_add_incoming_goaway(
     grpc_chttp2_transport_global *transport_global, gpr_uint32 goaway_error,
     gpr_slice goaway_text) {
-  char *msg = gpr_hexdump((char *)GPR_SLICE_START_PTR(goaway_text),
-                          GPR_SLICE_LENGTH(goaway_text), GPR_HEXDUMP_PLAINTEXT);
+  char *msg = gpr_dump_slice(goaway_text, GPR_DUMP_HEX | GPR_DUMP_ASCII);
   gpr_log(GPR_DEBUG, "got goaway [%d]: %s", goaway_error, msg);
   gpr_free(msg);
   gpr_slice_unref(goaway_text);
@@ -681,10 +682,14 @@
   }
 
   if (op->send_goaway) {
+    t->global.sent_goaway = 1;
     grpc_chttp2_goaway_append(
         t->global.last_incoming_stream_id,
         grpc_chttp2_grpc_status_to_http2_error(op->goaway_status),
         gpr_slice_ref(*op->goaway_message), &t->global.qbuf);
+    if (!grpc_chttp2_has_streams(t)) {
+      close_transport_locked(t);
+    }
   }
 
   if (op->set_accept_stream != NULL) {
@@ -733,6 +738,9 @@
     t->parsing.incoming_stream = NULL;
     grpc_chttp2_parsing_become_skip_parser(&t->parsing);
   }
+  if (grpc_chttp2_unregister_stream(t, s) && t->global.sent_goaway) {
+    close_transport_locked(t);
+  }
 
   new_stream_count = grpc_chttp2_stream_map_size(&t->parsing_stream_map) +
                      grpc_chttp2_stream_map_size(&t->new_stream_map);
@@ -868,11 +876,19 @@
   grpc_chttp2_stream *s = stream;
   grpc_chttp2_transport_global *transport_global = &t->global;
   grpc_chttp2_stream_global *stream_global = &s->global;
+  int was_zero;
+  int is_zero;
 
   GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("settings", transport_global, stream_global,
                                    outgoing_window,
                                    t->parsing.initial_window_update);
+  was_zero = stream_global->outgoing_window <= 0;
   stream_global->outgoing_window += t->parsing.initial_window_update;
+  is_zero = stream_global->outgoing_window <= 0;
+
+  if (was_zero && !is_zero) {
+    grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
+  }
 }
 
 static void read_error_locked(grpc_chttp2_transport *t) {

src/core/transport/metadata.c

diff --git a/src/core/transport/metadata.c b/src/core/transport/metadata.c
index c80d678..9cbb095 100644
--- a/src/core/transport/metadata.c
+++ b/src/core/transport/metadata.c
@@ -48,6 +48,20 @@
 #define INITIAL_STRTAB_CAPACITY 4
 #define INITIAL_MDTAB_CAPACITY 4
 
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+#define DEBUG_ARGS , const char *file, int line
+#define FWD_DEBUG_ARGS , file, line
+#define INTERNAL_STRING_REF(s) internal_string_ref((s), __FILE__, __LINE__)
+#define INTERNAL_STRING_UNREF(s) internal_string_unref((s), __FILE__, __LINE__)
+#define REF_MD_LOCKED(s) ref_md_locked((s), __FILE__, __LINE__)
+#else
+#define DEBUG_ARGS
+#define FWD_DEBUG_ARGS
+#define INTERNAL_STRING_REF(s) internal_string_ref((s))
+#define INTERNAL_STRING_UNREF(s) internal_string_unref((s))
+#define REF_MD_LOCKED(s) ref_md_locked((s))
+#endif
+
 typedef struct internal_string {
   /* must be byte compatible with grpc_mdstr */
   gpr_slice slice;
@@ -96,8 +110,8 @@
   size_t mdtab_capacity;
 };
 
-static void internal_string_ref(internal_string *s);
-static void internal_string_unref(internal_string *s);
+static void internal_string_ref(internal_string *s DEBUG_ARGS);
+static void internal_string_unref(internal_string *s DEBUG_ARGS);
 static void discard_metadata(grpc_mdctx *ctx);
 static void gc_mdtab(grpc_mdctx *ctx);
 static void metadata_context_destroy_locked(grpc_mdctx *ctx);
@@ -132,7 +146,15 @@
   gpr_mu_unlock(&ctx->mu);
 }
 
-static void ref_md_locked(internal_metadata *md) {
+static void ref_md_locked(internal_metadata *md DEBUG_ARGS) {
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+          "ELM   REF:%p:%d->%d: '%s' = '%s'", md,
+          gpr_atm_no_barrier_load(&md->refcnt),
+          gpr_atm_no_barrier_load(&md->refcnt) + 1,
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->key),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->value));
+#endif
   if (0 == gpr_atm_no_barrier_fetch_add(&md->refcnt, 1)) {
     md->context->mdtab_free--;
   }
@@ -173,8 +195,8 @@
     while (cur) {
       GPR_ASSERT(gpr_atm_acq_load(&cur->refcnt) == 0);
       next = cur->bucket_next;
-      internal_string_unref(cur->key);
-      internal_string_unref(cur->value);
+      INTERNAL_STRING_UNREF(cur->key);
+      INTERNAL_STRING_UNREF(cur->value);
       if (cur->user_data) {
         cur->destroy_user_data(cur->user_data);
       }
@@ -248,9 +270,19 @@
   gpr_free(is);
 }
 
-static void internal_string_ref(internal_string *s) { ++s->refs; }
+static void internal_string_ref(internal_string *s DEBUG_ARGS) {
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "STR   REF:%p:%d->%d: '%s'", s,
+          s->refs, s->refs + 1, grpc_mdstr_as_c_string((grpc_mdstr *)s));
+#endif
+  ++s->refs;
+}
 
-static void internal_string_unref(internal_string *s) {
+static void internal_string_unref(internal_string *s DEBUG_ARGS) {
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "STR UNREF:%p:%d->%d: '%s'", s,
+          s->refs, s->refs - 1, grpc_mdstr_as_c_string((grpc_mdstr *)s));
+#endif
   GPR_ASSERT(s->refs > 0);
   if (0 == --s->refs) {
     internal_destroy_string(s);
@@ -262,7 +294,7 @@
       (internal_string *)((char *)p - offsetof(internal_string, refcount));
   grpc_mdctx *ctx = is->context;
   lock(ctx);
-  internal_string_ref(is);
+  INTERNAL_STRING_REF(is);
   unlock(ctx);
 }
 
@@ -271,7 +303,7 @@
       (internal_string *)((char *)p - offsetof(internal_string, refcount));
   grpc_mdctx *ctx = is->context;
   lock(ctx);
-  internal_string_unref(is);
+  INTERNAL_STRING_UNREF(is);
   unlock(ctx);
 }
 
@@ -297,7 +329,7 @@
   for (s = ctx->strtab[hash % ctx->strtab_capacity]; s; s = s->bucket_next) {
     if (s->hash == hash && GPR_SLICE_LENGTH(s->slice) == length &&
         0 == memcmp(buf, GPR_SLICE_START_PTR(s->slice), length)) {
-      internal_string_ref(s);
+      INTERNAL_STRING_REF(s);
       unlock(ctx);
       return (grpc_mdstr *)s;
     }
@@ -353,8 +385,8 @@
     for (md = ctx->mdtab[i]; md; md = next) {
       next = md->bucket_next;
       if (gpr_atm_acq_load(&md->refcnt) == 0) {
-        internal_string_unref(md->key);
-        internal_string_unref(md->value);
+        INTERNAL_STRING_UNREF(md->key);
+        INTERNAL_STRING_UNREF(md->value);
         if (md->user_data) {
           md->destroy_user_data(md->user_data);
         }
@@ -418,9 +450,9 @@
   /* search for an existing pair */
   for (md = ctx->mdtab[hash % ctx->mdtab_capacity]; md; md = md->bucket_next) {
     if (md->key == key && md->value == value) {
-      ref_md_locked(md);
-      internal_string_unref(key);
-      internal_string_unref(value);
+      REF_MD_LOCKED(md);
+      INTERNAL_STRING_UNREF(key);
+      INTERNAL_STRING_UNREF(value);
       unlock(ctx);
       return (grpc_mdelem *)md;
     }
@@ -435,6 +467,12 @@
   md->user_data = NULL;
   md->destroy_user_data = NULL;
   md->bucket_next = ctx->mdtab[hash % ctx->mdtab_capacity];
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(GPR_DEBUG, "ELM   NEW:%p:%d: '%s' = '%s'", md,
+          gpr_atm_no_barrier_load(&md->refcnt),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->key),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->value));
+#endif
   ctx->mdtab[hash % ctx->mdtab_capacity] = md;
   ctx->mdtab_count++;
 
@@ -469,8 +507,16 @@
       grpc_mdstr_from_buffer(ctx, value, value_length));
 }
 
-grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *gmd) {
+grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *gmd DEBUG_ARGS) {
   internal_metadata *md = (internal_metadata *)gmd;
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+          "ELM   REF:%p:%d->%d: '%s' = '%s'", md,
+          gpr_atm_no_barrier_load(&md->refcnt),
+          gpr_atm_no_barrier_load(&md->refcnt) + 1,
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->key),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->value));
+#endif
   /* we can assume the ref count is >= 1 as the application is calling
      this function - meaning that no adjustment to mdtab_free is necessary,
      simplifying the logic here to be just an atomic increment */
@@ -480,10 +526,18 @@
   return gmd;
 }
 
-void grpc_mdelem_unref(grpc_mdelem *gmd) {
+void grpc_mdelem_unref(grpc_mdelem *gmd DEBUG_ARGS) {
   internal_metadata *md = (internal_metadata *)gmd;
   grpc_mdctx *ctx = md->context;
   lock(ctx);
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+          "ELM UNREF:%p:%d->%d: '%s' = '%s'", md,
+          gpr_atm_no_barrier_load(&md->refcnt),
+          gpr_atm_no_barrier_load(&md->refcnt) - 1,
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->key),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->value));
+#endif
   assert(gpr_atm_no_barrier_load(&md->refcnt) >= 1);
   if (1 == gpr_atm_full_fetch_add(&md->refcnt, -1)) {
     ctx->mdtab_free++;
@@ -495,20 +549,20 @@
   return (const char *)GPR_SLICE_START_PTR(s->slice);
 }
 
-grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *gs) {
+grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *gs DEBUG_ARGS) {
   internal_string *s = (internal_string *)gs;
   grpc_mdctx *ctx = s->context;
   lock(ctx);
-  internal_string_ref(s);
+  internal_string_ref(s FWD_DEBUG_ARGS);
   unlock(ctx);
   return gs;
 }
 
-void grpc_mdstr_unref(grpc_mdstr *gs) {
+void grpc_mdstr_unref(grpc_mdstr *gs DEBUG_ARGS) {
   internal_string *s = (internal_string *)gs;
   grpc_mdctx *ctx = s->context;
   lock(ctx);
-  internal_string_unref(s);
+  internal_string_unref(s FWD_DEBUG_ARGS);
   unlock(ctx);
 }
 
@@ -558,10 +612,19 @@
 
 void grpc_mdctx_lock(grpc_mdctx *ctx) { lock(ctx); }
 
-void grpc_mdctx_locked_mdelem_unref(grpc_mdctx *ctx, grpc_mdelem *gmd) {
+void grpc_mdctx_locked_mdelem_unref(grpc_mdctx *ctx,
+                                    grpc_mdelem *gmd DEBUG_ARGS) {
   internal_metadata *md = (internal_metadata *)gmd;
   grpc_mdctx *elem_ctx = md->context;
   GPR_ASSERT(ctx == elem_ctx);
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+  gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+          "ELM UNREF:%p:%d->%d: '%s' = '%s'", md,
+          gpr_atm_no_barrier_load(&md->refcnt),
+          gpr_atm_no_barrier_load(&md->refcnt) - 1,
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->key),
+          grpc_mdstr_as_c_string((grpc_mdstr *)md->value));
+#endif
   assert(gpr_atm_no_barrier_load(&md->refcnt) >= 1);
   if (1 == gpr_atm_full_fetch_add(&md->refcnt, -1)) {
     ctx->mdtab_free++;

src/core/transport/metadata.h

diff --git a/src/core/transport/metadata.h b/src/core/transport/metadata.h
index 76e3f3c..99b1532 100644
--- a/src/core/transport/metadata.h
+++ b/src/core/transport/metadata.h
@@ -127,11 +127,25 @@
                                void *user_data);
 
 /* Reference counting */
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+#define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s), __FILE__, __LINE__)
+#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s), __FILE__, __LINE__)
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s), __FILE__, __LINE__)
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s), __FILE__, __LINE__)
+grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *s, const char *file, int line);
+void grpc_mdstr_unref(grpc_mdstr *s, const char *file, int line);
+grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *md, const char *file, int line);
+void grpc_mdelem_unref(grpc_mdelem *md, const char *file, int line);
+#else
+#define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s))
+#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s))
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s))
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s))
 grpc_mdstr *grpc_mdstr_ref(grpc_mdstr *s);
 void grpc_mdstr_unref(grpc_mdstr *s);
-
 grpc_mdelem *grpc_mdelem_ref(grpc_mdelem *md);
 void grpc_mdelem_unref(grpc_mdelem *md);
+#endif
 
 /* Recover a char* from a grpc_mdstr. The returned string is null terminated.
    Does not promise that the returned string has no embedded nulls however. */
@@ -147,8 +161,18 @@
 /* Lock the metadata context: it's only safe to call _locked_ functions against
    this context from the calling thread until grpc_mdctx_unlock is called */
 void grpc_mdctx_lock(grpc_mdctx *ctx);
+#ifdef GRPC_METADATA_REFCOUNT_DEBUG
+#define GRPC_MDCTX_LOCKED_MDELEM_UNREF(ctx, elem) \
+  grpc_mdctx_locked_mdelem_unref((ctx), (elem), __FILE__, __LINE__)
+/* Unref a metadata element */
+void grpc_mdctx_locked_mdelem_unref(grpc_mdctx *ctx, grpc_mdelem *elem,
+                                    const char *file, int line);
+#else
+#define GRPC_MDCTX_LOCKED_MDELEM_UNREF(ctx, elem) \
+  grpc_mdctx_locked_mdelem_unref((ctx), (elem))
 /* Unref a metadata element */
 void grpc_mdctx_locked_mdelem_unref(grpc_mdctx *ctx, grpc_mdelem *elem);
+#endif
 /* Unlock the metadata context */
 void grpc_mdctx_unlock(grpc_mdctx *ctx);
 

src/core/transport/stream_op.c

diff --git a/src/core/transport/stream_op.c b/src/core/transport/stream_op.c
index 81df545..fdb50c6 100644
--- a/src/core/transport/stream_op.c
+++ b/src/core/transport/stream_op.c
@@ -211,10 +211,10 @@
 void grpc_metadata_batch_destroy(grpc_metadata_batch *batch) {
   grpc_linked_mdelem *l;
   for (l = batch->list.head; l; l = l->next) {
-    grpc_mdelem_unref(l->md);
+    GRPC_MDELEM_UNREF(l->md);
   }
   for (l = batch->garbage.head; l; l = l->next) {
-    grpc_mdelem_unref(l->md);
+    GRPC_MDELEM_UNREF(l->md);
   }
 }
 
@@ -315,7 +315,7 @@
       assert_valid_list(&batch->list);
       link_head(&batch->garbage, l);
     } else if (filt != orig) {
-      grpc_mdelem_unref(orig);
+      GRPC_MDELEM_UNREF(orig);
       l->md = filt;
     }
   }

src/core/transport/transport.c

diff --git a/src/core/transport/transport.c b/src/core/transport/transport.c
index fe56594..2689e30 100644
--- a/src/core/transport/transport.c
+++ b/src/core/transport/transport.c
@@ -85,6 +85,6 @@
     op->cancel_with_status = status;
   }
   if (message) {
-    grpc_mdstr_unref(message);
+    GRPC_MDSTR_UNREF(message);
   }
 }

src/core/transport/transport.h

diff --git a/src/core/transport/transport.h b/src/core/transport/transport.h
index 579bcc9..1429737 100644
--- a/src/core/transport/transport.h
+++ b/src/core/transport/transport.h
@@ -91,7 +91,9 @@
   grpc_connectivity_state *connectivity_state;
   /** should the transport be disconnected */
   int disconnect;
-  /** should we send a goaway? */
+  /** should we send a goaway?
+      after a goaway is sent, once there are no more active calls on
+      the transport, the transport should disconnect */
   int send_goaway;
   /** what should the goaway contain? */
   grpc_status_code goaway_status;

src/core/transport/transport_op_string.c

diff --git a/src/core/transport/transport_op_string.c b/src/core/transport/transport_op_string.c
index 1ffdb5b..0da396a 100644
--- a/src/core/transport/transport_op_string.c
+++ b/src/core/transport/transport_op_string.c
@@ -47,14 +47,12 @@
 
 static void put_metadata(gpr_strvec *b, grpc_mdelem *md) {
   gpr_strvec_add(b, gpr_strdup("key="));
-  gpr_strvec_add(
-      b, gpr_hexdump((char *)GPR_SLICE_START_PTR(md->key->slice),
-                     GPR_SLICE_LENGTH(md->key->slice), GPR_HEXDUMP_PLAINTEXT));
+  gpr_strvec_add(b,
+                 gpr_dump_slice(md->key->slice, GPR_DUMP_HEX | GPR_DUMP_ASCII));
 
   gpr_strvec_add(b, gpr_strdup(" value="));
-  gpr_strvec_add(b, gpr_hexdump((char *)GPR_SLICE_START_PTR(md->value->slice),
-                                GPR_SLICE_LENGTH(md->value->slice),
-                                GPR_HEXDUMP_PLAINTEXT));
+  gpr_strvec_add(
+      b, gpr_dump_slice(md->value->slice, GPR_DUMP_HEX | GPR_DUMP_ASCII));
 }
 
 static void put_metadata_list(gpr_strvec *b, grpc_metadata_batch md) {

src/cpp/client/channel.cc

diff --git a/src/cpp/client/channel.cc b/src/cpp/client/channel.cc
index 72593f8..da31d00 100644
--- a/src/cpp/client/channel.cc
+++ b/src/cpp/client/channel.cc
@@ -39,6 +39,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/slice.h>
 
+#include "src/core/census/grpc_context.h"
 #include "src/core/profiling/timers.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/client_context.h>
@@ -59,7 +60,7 @@
 Call Channel::CreateCall(const RpcMethod& method, ClientContext* context,
                          CompletionQueue* cq) {
   auto c_call =
-      method.channel_tag()
+      method.channel_tag() && context->authority().empty()
           ? grpc_channel_create_registered_call(c_channel_, cq->cq(),
                                                 method.channel_tag(),
                                                 context->raw_deadline())
@@ -68,6 +69,7 @@
                                          ? target_.c_str()
                                          : context->authority().c_str(),
                                      context->raw_deadline());
+  grpc_census_call_set_context(c_call, context->get_census_context());
   GRPC_TIMER_MARK(GRPC_PTAG_CPP_CALL_CREATED, c_call);
   context->set_call(c_call, shared_from_this());
   return Call(c_call, this, cq);

src/cpp/client/client_context.cc

diff --git a/src/cpp/client/client_context.cc b/src/cpp/client/client_context.cc
index 72cdd49..c68f6dd 100644
--- a/src/cpp/client/client_context.cc
+++ b/src/cpp/client/client_context.cc
@@ -36,6 +36,7 @@
 #include <grpc/grpc.h>
 #include <grpc++/credentials.h>
 #include <grpc++/time.h>
+#include "src/cpp/common/create_auth_context.h"
 
 namespace grpc {
 
@@ -75,6 +76,13 @@
   }
 }
 
+std::shared_ptr<const AuthContext> ClientContext::auth_context() const {
+  if (auth_context_.get() == nullptr) {
+    auth_context_ = CreateAuthContext(call_);
+  }
+  return auth_context_;
+}
+
 void ClientContext::TryCancel() {
   if (call_) {
     grpc_call_cancel(call_);

src/cpp/client/secure_credentials.cc

diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index b5134b3..4d20090 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -117,6 +117,13 @@
       grpc_refresh_token_credentials_create(json_refresh_token.c_str()));
 }
 
+// Builds access token credentials.
+std::shared_ptr<Credentials> AccessTokenCredentials(
+    const grpc::string& access_token) {
+  return WrapCredentials(
+      grpc_access_token_credentials_create(access_token.c_str()));
+}
+
 // Builds IAM credentials.
 std::shared_ptr<Credentials> IAMCredentials(
     const grpc::string& authorization_token,

src/cpp/common/create_auth_context.h

diff --git a/src/cpp/common/create_auth_context.h b/src/cpp/common/create_auth_context.h
new file mode 100644
index 0000000..9082a90
--- /dev/null
+++ b/src/cpp/common/create_auth_context.h
@@ -0,0 +1,42 @@
+/*
+ *
+ * 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 <memory>
+
+#include <grpc/grpc.h>
+#include <grpc++/auth_context.h>
+
+namespace grpc {
+
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
+
+}  // namespace grpc

src/cpp/common/insecure_create_auth_context.cc

diff --git a/src/cpp/common/insecure_create_auth_context.cc b/src/cpp/common/insecure_create_auth_context.cc
new file mode 100644
index 0000000..07fc0bd
--- /dev/null
+++ b/src/cpp/common/insecure_create_auth_context.cc
@@ -0,0 +1,45 @@
+/*
+ *
+ * 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 <memory>
+
+#include <grpc/grpc.h>
+#include <grpc++/auth_context.h>
+
+namespace grpc {
+
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call) {
+  (void)call;
+  return std::shared_ptr<const AuthContext>();
+}
+
+}  // namespace grpc

src/cpp/common/secure_auth_context.cc

diff --git a/src/cpp/common/secure_auth_context.cc b/src/cpp/common/secure_auth_context.cc
new file mode 100644
index 0000000..4513723
--- /dev/null
+++ b/src/cpp/common/secure_auth_context.cc
@@ -0,0 +1,80 @@
+/*
+ *
+ * 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 "src/cpp/common/secure_auth_context.h"
+
+#include <grpc/grpc_security.h>
+
+namespace grpc {
+
+SecureAuthContext::SecureAuthContext(grpc_auth_context* ctx) : ctx_(ctx) {}
+
+SecureAuthContext::~SecureAuthContext() { grpc_auth_context_release(ctx_); }
+
+std::vector<grpc::string> SecureAuthContext::GetPeerIdentity() const {
+  if (!ctx_) {
+    return std::vector<grpc::string>();
+  }
+  grpc_auth_property_iterator iter = grpc_auth_context_peer_identity(ctx_);
+  std::vector<grpc::string> identity;
+  const grpc_auth_property* property = nullptr;
+  while ((property = grpc_auth_property_iterator_next(&iter))) {
+    identity.push_back(grpc::string(property->value, property->value_length));
+  }
+  return identity;
+}
+
+grpc::string SecureAuthContext::GetPeerIdentityPropertyName() const {
+  if (!ctx_) {
+    return "";
+  }
+  const char* name = grpc_auth_context_peer_identity_property_name(ctx_);
+  return name == nullptr ? "" : name;
+}
+
+std::vector<grpc::string> SecureAuthContext::FindPropertyValues(
+    const grpc::string& name) const {
+  if (!ctx_) {
+    return std::vector<grpc::string>();
+  }
+  grpc_auth_property_iterator iter =
+      grpc_auth_context_find_properties_by_name(ctx_, name.c_str());
+  const grpc_auth_property* property = nullptr;
+  std::vector<grpc::string> values;
+  while ((property = grpc_auth_property_iterator_next(&iter))) {
+    values.push_back(grpc::string(property->value, property->value_length));
+  }
+  return values;
+}
+
+}  // namespace grpc

src/cpp/common/secure_auth_context.h

diff --git a/src/cpp/common/secure_auth_context.h b/src/cpp/common/secure_auth_context.h
new file mode 100644
index 0000000..bba4680
--- /dev/null
+++ b/src/cpp/common/secure_auth_context.h
@@ -0,0 +1,62 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H
+#define GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H
+
+#include <grpc++/auth_context.h>
+
+struct grpc_auth_context;
+
+namespace grpc {
+
+class SecureAuthContext GRPC_FINAL : public AuthContext {
+ public:
+  SecureAuthContext(grpc_auth_context* ctx);
+
+  ~SecureAuthContext() GRPC_OVERRIDE;
+
+  std::vector<grpc::string> GetPeerIdentity() const GRPC_OVERRIDE;
+
+  grpc::string GetPeerIdentityPropertyName() const GRPC_OVERRIDE;
+
+  std::vector<grpc::string> FindPropertyValues(const grpc::string& name) const
+      GRPC_OVERRIDE;
+
+ private:
+  grpc_auth_context* ctx_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H

src/cpp/common/secure_create_auth_context.cc

diff --git a/src/cpp/common/secure_create_auth_context.cc b/src/cpp/common/secure_create_auth_context.cc
new file mode 100644
index 0000000..d81f4bb
--- /dev/null
+++ b/src/cpp/common/secure_create_auth_context.cc
@@ -0,0 +1,50 @@
+/*
+ *
+ * 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 <memory>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc++/auth_context.h>
+#include "src/cpp/common/secure_auth_context.h"
+
+namespace grpc {
+
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call) {
+  if (call == nullptr) {
+    return std::shared_ptr<const AuthContext>();
+  }
+  return std::shared_ptr<const AuthContext>(
+      new SecureAuthContext(grpc_call_auth_context(call)));
+}
+
+}  // namespace grpc

src/cpp/server/server.cc

diff --git a/src/cpp/server/server.cc b/src/cpp/server/server.cc
index 1437b2d..e6761d6 100644
--- a/src/cpp/server/server.cc
+++ b/src/cpp/server/server.cc
@@ -118,7 +118,7 @@
           has_request_payload_(mrd->has_request_payload_),
           request_payload_(mrd->request_payload_),
           method_(mrd->method_) {
-      ctx_.call_ = mrd->call_;
+      ctx_.set_call(mrd->call_);
       ctx_.cq_ = &cq_;
       GPR_ASSERT(mrd->in_flight_);
       mrd->in_flight_ = false;
@@ -207,10 +207,11 @@
   delete sync_methods_;
 }
 
-bool Server::RegisterService(RpcService* service) {
+bool Server::RegisterService(const grpc::string *host, RpcService* service) {
   for (int i = 0; i < service->GetMethodCount(); ++i) {
     RpcServiceMethod* method = service->GetMethod(i);
-    void* tag = grpc_server_register_method(server_, method->name(), nullptr);
+    void* tag = grpc_server_register_method(
+        server_, method->name(), host ? host->c_str() : nullptr);
     if (!tag) {
       gpr_log(GPR_DEBUG, "Attempt to register %s multiple times",
               method->name());
@@ -222,14 +223,14 @@
   return true;
 }
 
-bool Server::RegisterAsyncService(AsynchronousService* service) {
+bool Server::RegisterAsyncService(const grpc::string *host, AsynchronousService* service) {
   GPR_ASSERT(service->server_ == nullptr &&
              "Can only register an asynchronous service against one server.");
   service->server_ = this;
   service->request_args_ = new void*[service->method_count_];
   for (size_t i = 0; i < service->method_count_; ++i) {
     void* tag = grpc_server_register_method(server_, service->method_names_[i],
-                                            nullptr);
+                                            host ? host->c_str() : nullptr);
     if (!tag) {
       gpr_log(GPR_DEBUG, "Attempt to register %s multiple times",
               service->method_names_[i]);
@@ -325,7 +326,7 @@
     }
   }
   grpc_metadata_array_destroy(&initial_metadata_array_);
-  context_->call_ = call_;
+  context_->set_call(call_);
   context_->cq_ = call_cq_;
   Call call(call_, server_, call_cq_, server_->max_message_size_);
   if (*status && call_) {

src/cpp/server/server_builder.cc

diff --git a/src/cpp/server/server_builder.cc b/src/cpp/server/server_builder.cc
index 3ee1d54..86c78f0 100644
--- a/src/cpp/server/server_builder.cc
+++ b/src/cpp/server/server_builder.cc
@@ -51,11 +51,21 @@
 }
 
 void ServerBuilder::RegisterService(SynchronousService* service) {
-  services_.push_back(service->service());
+  services_.emplace_back(new NamedService<RpcService>(service->service()));
 }
 
 void ServerBuilder::RegisterAsyncService(AsynchronousService* service) {
-  async_services_.push_back(service);
+  async_services_.emplace_back(new NamedService<AsynchronousService>(service));
+}
+
+void ServerBuilder::RegisterService(
+    const grpc::string& addr, SynchronousService* service) {
+  services_.emplace_back(new NamedService<RpcService>(addr, service->service()));
+}
+
+void ServerBuilder::RegisterAsyncService(
+    const grpc::string& addr, AsynchronousService* service) {
+  async_services_.emplace_back(new NamedService<AsynchronousService>(addr, service));
 }
 
 void ServerBuilder::RegisterAsyncGenericService(AsyncGenericService* service) {
@@ -97,13 +107,13 @@
   }
   for (auto service = services_.begin(); service != services_.end();
        service++) {
-    if (!server->RegisterService(*service)) {
+    if (!server->RegisterService((*service)->host.get(), (*service)->service)) {
       return nullptr;
     }
   }
   for (auto service = async_services_.begin();
        service != async_services_.end(); service++) {
-    if (!server->RegisterAsyncService(*service)) {
+    if (!server->RegisterAsyncService((*service)->host.get(), (*service)->service)) {
       return nullptr;
     }
   }

src/cpp/server/server_context.cc

diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index 699895a..1bb3a8b 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -39,6 +39,8 @@
 #include <grpc++/impl/sync.h>
 #include <grpc++/time.h>
 
+#include "src/cpp/common/create_auth_context.h"
+
 namespace grpc {
 
 // CompletionOp
@@ -146,4 +148,9 @@
   return completion_op_ && completion_op_->CheckCancelled(cq_);
 }
 
+void ServerContext::set_call(grpc_call* call) {
+  call_ = call;
+  auth_context_ = CreateAuthContext(call);
+}
+
 }  // namespace grpc

src/node/binding.gyp

diff --git a/src/node/binding.gyp b/src/node/binding.gyp
index 83f72fa..6ba2333 100644
--- a/src/node/binding.gyp
+++ b/src/node/binding.gyp
@@ -10,20 +10,54 @@
         '-pthread',
         '-pedantic',
         '-g',
-        '-zdefs'
+        '-zdefs',
         '-Werror'
       ],
       'ldflags': [
         '-g'
       ],
-      'link_settings': {
-        'libraries': [
-          '-lpthread',
-          '-lgrpc',
-          '-lgpr'
-        ]
-      },
       "conditions": [
+        ['OS != "win"', {
+          'variables': {
+            'pkg_config_grpc': '<!(pkg-config --exists grpc >/dev/null 2>&1 && echo true || echo false)'
+          },
+          'conditions': [
+            ['pkg_config_grpc == "true"', {
+              'link_settings': {
+                'libraries': [
+                  '<!@(pkg-config --libs-only-l --static grpc)'
+                ]
+              },
+              'cflags': [
+                '<!@(pkg-config --cflags grpc)'
+              ],
+              'libraries': [
+                '<!@(pkg-config --libs-only-L --static grpc)'
+              ],
+              'ldflags': [
+                '<!@(pkg-config --libs-only-other --static grpc)'
+              ]
+              }, {
+                'link_settings': {
+                  'libraries': [
+                    '-lpthread',
+                    '-lgrpc',
+                    '-lgpr'
+                  ],
+                },
+                'conditions':[
+                  ['OS != "mac"', {
+                    'link_settings': {
+                      'libraries': [
+                        '-lrt'
+                      ]
+                    }
+                  }]
+                ]
+              }
+           ]
+          ]
+        }],
         ['OS == "mac"', {
           'xcode_settings': {
             'MACOSX_DEPLOYMENT_TARGET': '10.9',
@@ -32,13 +66,6 @@
               '-stdlib=libc++'
             ]
           }
-        }],
-        ['OS != "mac"', {
-          'link_settings': {
-            'libraries': [
-              '-lrt'
-            ]
-          }
         }]
       ],
       "target_name": "grpc",

src/node/package.json

diff --git a/src/node/package.json b/src/node/package.json
index 7d4a493..6b54570 100644
--- a/src/node/package.json
+++ b/src/node/package.json
@@ -27,7 +27,7 @@
     "bindings": "^1.2.0",
     "lodash": "^3.9.3",
     "nan": "^1.5.0",
-    "protobufjs": "dcodeIO/ProtoBuf.js"
+    "protobufjs": "^4.0.0"
   },
   "devDependencies": {
     "async": "^0.9.0",

src/objective-c/GRPCClient/private/GRPCChannel.m

diff --git a/src/objective-c/GRPCClient/private/GRPCChannel.m b/src/objective-c/GRPCClient/private/GRPCChannel.m
index 36f4c0a..af43263 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannel.m
+++ b/src/objective-c/GRPCClient/private/GRPCChannel.m
@@ -60,7 +60,7 @@
 }
 
 - (instancetype)initWithHost:(NSString *)host {
-  if (![host containsString:@"://"]) {
+  if (![host rangeOfString:@"://"].length) {
     // No scheme provided; assume https.
     host = [@"https://" stringByAppendingString:host];
   }

src/objective-c/tests/Podfile

diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index 026868d..2aa837f 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -1,6 +1,7 @@
 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
+pod 'Protobuf', :path => "../../../third_party/protobuf"
 pod 'gRPC', :path => "../../.."
 pod 'RemoteTest', :path => "../generated_libraries/RemoteTestClient"
 pod 'RouteGuide', :path => "../generated_libraries/RouteGuideClient"

src/python/requirements.txt

diff --git a/src/python/requirements.txt b/src/python/requirements.txt
index 43395df..41d633a 100644
--- a/src/python/requirements.txt
+++ b/src/python/requirements.txt
@@ -1,3 +1,4 @@
 enum34==1.0.4
 futures==2.2.0
 protobuf==3.0.0a3
+cython>=0.22

src/python/src/.gitignore

diff --git a/src/python/src/.gitignore b/src/python/src/.gitignore
index bc15a52..144e501 100644
--- a/src/python/src/.gitignore
+++ b/src/python/src/.gitignore
@@ -1,3 +1,4 @@
 MANIFEST
 grpcio.egg-info/
+build/
 dist/

src/python/src/grpc/_adapter/.gitignore

diff --git a/src/python/src/grpc/_adapter/.gitignore b/src/python/src/grpc/_adapter/.gitignore
new file mode 100644
index 0000000..a6f96cd
--- /dev/null
+++ b/src/python/src/grpc/_adapter/.gitignore
@@ -0,0 +1,5 @@
+*.a
+*.so
+*.dll
+*.pyc
+*.pyd

src/python/src/grpc/_cython/.gitignore

diff --git a/src/python/src/grpc/_cython/.gitignore b/src/python/src/grpc/_cython/.gitignore
new file mode 100644
index 0000000..c315029
--- /dev/null
+++ b/src/python/src/grpc/_cython/.gitignore
@@ -0,0 +1,7 @@
+*.h
+*.c
+*.a
+*.so
+*.dll
+*.pyc
+*.pyd

src/python/src/grpc/_cython/README.rst

diff --git a/src/python/src/grpc/_cython/README.rst b/src/python/src/grpc/_cython/README.rst
new file mode 100644
index 0000000..c0e6673
--- /dev/null
+++ b/src/python/src/grpc/_cython/README.rst
@@ -0,0 +1,52 @@
+GRPC Python Cython layer
+========================
+
+Package for the GRPC Python Cython layer.
+
+What is Cython?
+---------------
+
+Cython is both a superset of the Python language with extensions for dealing
+with C types and a tool that transpiles this superset into C code. It provides
+convenient means of statically typing expressions and of converting Python
+strings to pointers (among other niceties), thus dramatically smoothing the
+Python/C interop by allowing fluid use of APIs in both from the same source.
+See the wonderful `Cython website`_.
+
+Why Cython?
+-----------
+
+- **Python 2 and 3 support**
+  Cython generated C code has precompiler macros to target both Python 2 and
+  Python 3 C APIs, even while acting as a superset of just the Python 2
+  language (e.g. using ``basestring``).
+- **Significantly less semantic noise**
+  A lot of CPython code is just glue, especially human-error-prone
+  ``Py_INCREF``-ing and ``Py_DECREF``-ing around error handlers and such.
+  Cython takes care of that automagically.
+- **Possible PyPy support**
+  One of the major developments in Cython over the past few years was the
+  addition of support for PyPy. We might soon be able to provide such support
+  ourselves through our use of Cython.
+- **Less Python glue code**
+  There existed several adapter layers in and around the original CPython code
+  to smooth the surface exposed to Python due to how much trouble it was to
+  make such a smooth surface via the CPython API alone. Cython makes writing
+  such a surface incredibly easy, so these adapter layers may be removed.
+
+Implications for Users
+----------------------
+
+Nothing additional will be required for users. PyPI packages will contain
+Cython generated C code and thus not necessitate a Cython installation.
+
+Implications for GRPC Developers
+--------------------------------
+
+A typical edit-compile-debug cycle now requires Cython. We install Cython in
+the ``virtualenv`` generated for the Python tests in this repository, so
+initial test runs may take an extra 2+ minutes to complete.  Subsequent test
+runs won't reinstall ``Cython`` (unless required versions change and the
+``virtualenv`` doesn't have installed versions that satisfy the change).
+
+.. _`Cython website`: http://cython.org/

src/python/src/grpc/_cython/__init__.py

diff --git a/src/python/src/grpc/_cython/__init__.py b/src/python/src/grpc/_cython/__init__.py
new file mode 100644
index 0000000..b893988
--- /dev/null
+++ b/src/python/src/grpc/_cython/__init__.py
@@ -0,0 +1,28 @@
+# 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.

src/python/src/grpc/_cython/_cygrpc/__init__.py

diff --git a/src/python/src/grpc/_cython/_cygrpc/__init__.py b/src/python/src/grpc/_cython/_cygrpc/__init__.py
new file mode 100644
index 0000000..b893988
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/__init__.py
@@ -0,0 +1,28 @@
+# 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.

src/python/src/grpc/_cython/_cygrpc/call.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/call.pxd b/src/python/src/grpc/_cython/_cygrpc/call.pxd
new file mode 100644
index 0000000..fe9b81e
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/call.pxd
@@ -0,0 +1,37 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+
+
+cdef class Call:
+
+  cdef grpc.grpc_call *c_call
+  cdef list references
+

src/python/src/grpc/_cython/_cygrpc/call.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/call.pyx b/src/python/src/grpc/_cython/_cygrpc/call.pyx
new file mode 100644
index 0000000..4349786
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/call.pyx
@@ -0,0 +1,82 @@
+# 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.
+
+cimport cpython
+
+from grpc._cython._cygrpc cimport records
+
+
+cdef class Call:
+
+  def __cinit__(self):
+    # Create an *empty* call
+    self.c_call = NULL
+    self.references = []
+
+  def start_batch(self, operations, tag):
+    if not self.is_valid:
+      raise ValueError("invalid call object cannot be used from Python")
+    cdef records.Operations cy_operations = records.Operations(operations)
+    cdef records.OperationTag operation_tag = records.OperationTag(tag)
+    operation_tag.operation_call = self
+    operation_tag.batch_operations = cy_operations
+    cpython.Py_INCREF(operation_tag)
+    return grpc.grpc_call_start_batch(
+        self.c_call, cy_operations.c_ops, cy_operations.c_nops,
+        <cpython.PyObject *>operation_tag)
+
+  def cancel(self,
+             grpc.grpc_status_code error_code=grpc.GRPC_STATUS__DO_NOT_USE,
+             details=None):
+    if not self.is_valid:
+      raise ValueError("invalid call object cannot be used from Python")
+    if (details is None) != (error_code == grpc.GRPC_STATUS__DO_NOT_USE):
+      raise ValueError("if error_code is specified, so must details "
+                       "(and vice-versa)")
+    if isinstance(details, bytes):
+      pass
+    elif isinstance(details, basestring):
+      details = details.encode()
+    else:
+      raise TypeError("expected details to be str or bytes")
+    if error_code != grpc.GRPC_STATUS__DO_NOT_USE:
+      self.references.append(details)
+      return grpc.grpc_call_cancel_with_status(self.c_call, error_code, details)
+    else:
+      return grpc.grpc_call_cancel(self.c_call)
+
+  def __dealloc__(self):
+    if self.c_call != NULL:
+      grpc.grpc_call_destroy(self.c_call)
+
+  # The object *should* always be valid from Python. Used for debugging.
+  @property
+  def is_valid(self):
+    return self.c_call != NULL
+

src/python/src/grpc/_cython/_cygrpc/channel.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/channel.pxd b/src/python/src/grpc/_cython/_cygrpc/channel.pxd
new file mode 100644
index 0000000..3e341bf
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/channel.pxd
@@ -0,0 +1,36 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+
+
+cdef class Channel:
+
+  cdef grpc.grpc_channel *c_channel
+  cdef list references

src/python/src/grpc/_cython/_cygrpc/channel.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/channel.pyx b/src/python/src/grpc/_cython/_cygrpc/channel.pyx
new file mode 100644
index 0000000..b203138
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/channel.pyx
@@ -0,0 +1,84 @@
+# 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.
+
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport completion_queue
+from grpc._cython._cygrpc cimport credentials
+from grpc._cython._cygrpc cimport records
+
+
+cdef class Channel:
+
+  def __cinit__(self, target, records.ChannelArgs arguments=None,
+                credentials.ClientCredentials client_credentials=None):
+    cdef grpc.grpc_channel_args *c_arguments = NULL
+    self.c_channel = NULL
+    self.references = []
+    if arguments is not None:
+      c_arguments = &arguments.c_args
+    if isinstance(target, bytes):
+      pass
+    elif isinstance(target, basestring):
+      target = target.encode()
+    else:
+      raise TypeError("expected target to be str or bytes")
+    if client_credentials is None:
+      self.c_channel = grpc.grpc_channel_create(target, c_arguments)
+    else:
+      self.c_channel = grpc.grpc_secure_channel_create(
+          client_credentials.c_credentials, target, c_arguments)
+      self.references.append(client_credentials)
+    self.references.append(target)
+    self.references.append(arguments)
+
+  def create_call(self, completion_queue.CompletionQueue queue not None,
+                  method, host, records.Timespec deadline not None):
+    if queue.is_shutting_down:
+      raise ValueError("queue must not be shutting down or shutdown")
+    if isinstance(method, bytes):
+      pass
+    elif isinstance(method, basestring):
+      method = method.encode()
+    else:
+      raise TypeError("expected method to be str or bytes")
+    if isinstance(host, bytes):
+      pass
+    elif isinstance(host, basestring):
+      host = host.encode()
+    else:
+      raise TypeError("expected host to be str or bytes")
+    cdef call.Call operation_call = call.Call()
+    operation_call.references = [self, method, host, queue]
+    operation_call.c_call = grpc.grpc_channel_create_call(
+        self.c_channel, queue.c_completion_queue, method, host, deadline.c_time)
+    return operation_call
+
+  def __dealloc__(self):
+    if self.c_channel != NULL:
+      grpc.grpc_channel_destroy(self.c_channel)

src/python/src/grpc/_cython/_cygrpc/completion_queue.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/completion_queue.pxd b/src/python/src/grpc/_cython/_cygrpc/completion_queue.pxd
new file mode 100644
index 0000000..fd562ad
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/completion_queue.pxd
@@ -0,0 +1,39 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+
+
+cdef class CompletionQueue:
+
+  cdef grpc.grpc_completion_queue *c_completion_queue
+  cdef object poll_condition
+  cdef bint is_polling
+  cdef bint is_shutting_down
+  cdef bint is_shutdown

src/python/src/grpc/_cython/_cygrpc/completion_queue.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/completion_queue.pyx b/src/python/src/grpc/_cython/_cygrpc/completion_queue.pyx
new file mode 100644
index 0000000..886d853
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/completion_queue.pyx
@@ -0,0 +1,117 @@
+# 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.
+
+cimport cpython
+
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport records
+
+import threading
+import time
+
+
+cdef class CompletionQueue:
+
+  def __cinit__(self):
+    self.c_completion_queue = grpc.grpc_completion_queue_create()
+    self.is_shutting_down = False
+    self.is_shutdown = False
+    self.poll_condition = threading.Condition()
+    self.is_polling = False
+
+  def poll(self, records.Timespec deadline=None):
+    # We name this 'poll' to avoid problems with CPython's expectations for
+    # 'special' methods (like next and __next__).
+    cdef grpc.gpr_timespec c_deadline = grpc.gpr_inf_future
+    cdef records.OperationTag tag = None
+    cdef object user_tag = None
+    cdef call.Call operation_call = None
+    cdef records.CallDetails request_call_details = None
+    cdef records.Metadata request_metadata = None
+    cdef records.Operations batch_operations = None
+    if deadline is not None:
+      c_deadline = deadline.c_time
+    cdef grpc.grpc_event event
+
+    # Poll within a critical section
+    with self.poll_condition:
+      while self.is_polling:
+        self.poll_condition.wait(float(deadline) - time.time())
+      self.is_polling = True
+    with nogil:
+      event = grpc.grpc_completion_queue_next(
+          self.c_completion_queue, c_deadline)
+    with self.poll_condition:
+      self.is_polling = False
+      self.poll_condition.notify()
+
+    if event.type == grpc.GRPC_QUEUE_TIMEOUT:
+      return records.Event(event.type, False, None, None, None, None, None)
+    elif event.type == grpc.GRPC_QUEUE_SHUTDOWN:
+      self.is_shutdown = True
+      return records.Event(event.type, True, None, None, None, None, None)
+    else:
+      if event.tag != NULL:
+        tag = <records.OperationTag>event.tag
+        # We receive event tags only after they've been inc-ref'd elsewhere in
+        # the code.
+        cpython.Py_DECREF(tag)
+        if tag.shutting_down_server is not None:
+          tag.shutting_down_server.notify_shutdown_complete()
+        user_tag = tag.user_tag
+        operation_call = tag.operation_call
+        request_call_details = tag.request_call_details
+        request_metadata = tag.request_metadata
+        batch_operations = tag.batch_operations
+        if tag.is_new_request:
+          # Stuff in the tag not explicitly handled by us needs to live through
+          # the life of the call
+          operation_call.references.extend(tag.references)
+      return records.Event(
+          event.type, event.success, user_tag, operation_call,
+          request_call_details, request_metadata, batch_operations)
+
+  def shutdown(self):
+    grpc.grpc_completion_queue_shutdown(self.c_completion_queue)
+    self.is_shutting_down = True
+
+  def clear(self):
+    if not self.is_shutting_down:
+      raise ValueError('queue must be shutting down to be cleared')
+    while self.poll().type != grpc.GRPC_QUEUE_SHUTDOWN:
+      pass
+
+  def __dealloc__(self):
+    if self.c_completion_queue != NULL:
+      # Ensure shutdown, pump the queue
+      if not self.is_shutting_down:
+        self.shutdown()
+      while not self.is_shutdown:
+        self.poll()
+      grpc.grpc_completion_queue_destroy(self.c_completion_queue)

src/python/src/grpc/_cython/_cygrpc/credentials.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/credentials.pxd b/src/python/src/grpc/_cython/_cygrpc/credentials.pxd
new file mode 100644
index 0000000..6b74a26
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/credentials.pxd
@@ -0,0 +1,45 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+
+
+cdef class ClientCredentials:
+
+  cdef grpc.grpc_credentials *c_credentials
+  cdef grpc.grpc_ssl_pem_key_cert_pair c_ssl_pem_key_cert_pair
+  cdef list references
+
+
+cdef class ServerCredentials:
+
+  cdef grpc.grpc_server_credentials *c_credentials
+  cdef grpc.grpc_ssl_pem_key_cert_pair *c_ssl_pem_key_cert_pairs
+  cdef size_t c_ssl_pem_key_cert_pairs_count
+  cdef list references

src/python/src/grpc/_cython/_cygrpc/credentials.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/credentials.pyx b/src/python/src/grpc/_cython/_cygrpc/credentials.pyx
new file mode 100644
index 0000000..c14d884
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/credentials.pyx
@@ -0,0 +1,217 @@
+# 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.
+
+from grpc._cython._cygrpc cimport records
+
+
+cdef class ClientCredentials:
+
+  def __cinit__(self):
+    self.c_credentials = NULL
+    self.c_ssl_pem_key_cert_pair.private_key = NULL
+    self.c_ssl_pem_key_cert_pair.certificate_chain = NULL
+    self.references = []
+
+  # The object *can* be invalid in Python if we fail to make the credentials
+  # (and the core thus returns NULL credentials). Used primarily for debugging.
+  @property
+  def is_valid(self):
+    return self.c_credentials != NULL
+
+  def __dealloc__(self):
+    if self.c_credentials != NULL:
+      grpc.grpc_credentials_release(self.c_credentials)
+
+
+cdef class ServerCredentials:
+
+  def __cinit__(self):
+    self.c_credentials = NULL
+
+  def __dealloc__(self):
+    if self.c_credentials != NULL:
+      grpc.grpc_server_credentials_release(self.c_credentials)
+
+
+def client_credentials_google_default():
+  cdef ClientCredentials credentials = ClientCredentials();
+  credentials.c_credentials = grpc.grpc_google_default_credentials_create()
+  return credentials
+
+def client_credentials_ssl(pem_root_certificates,
+                           records.SslPemKeyCertPair ssl_pem_key_cert_pair):
+  if pem_root_certificates is None:
+    pass
+  elif isinstance(pem_root_certificates, bytes):
+    pass
+  elif isinstance(pem_root_certificates, basestring):
+    pem_root_certificates = pem_root_certificates.encode()
+  else:
+    raise TypeError("expected str or bytes for pem_root_certificates")
+  cdef ClientCredentials credentials = ClientCredentials()
+  cdef const char *c_pem_root_certificates = NULL
+  if pem_root_certificates is not None:
+    c_pem_root_certificates = pem_root_certificates
+    credentials.references.append(pem_root_certificates)
+  if ssl_pem_key_cert_pair is not None:
+    credentials.c_credentials = grpc.grpc_ssl_credentials_create(
+        c_pem_root_certificates, &ssl_pem_key_cert_pair.c_pair
+    )
+    credentials.references.append(ssl_pem_key_cert_pair)
+  else:
+    credentials.c_credentials = grpc.grpc_ssl_credentials_create(
+      c_pem_root_certificates, NULL
+    )
+
+def client_credentials_composite_credentials(
+    ClientCredentials credentials_1 not None,
+    ClientCredentials credentials_2 not None):
+  if not credentials_1.is_valid or not credentials_2.is_valid:
+    raise ValueError("passed credentials must both be valid")
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_composite_credentials_create(
+      credentials_1.c_credentials, credentials_2.c_credentials)
+  credentials.references.append(credentials_1)
+  credentials.references.append(credentials_2)
+  return credentials
+
+def client_credentials_compute_engine():
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_compute_engine_credentials_create()
+  return credentials
+
+def client_credentials_service_account(
+    json_key, scope, records.Timespec token_lifetime not None):
+  if isinstance(json_key, bytes):
+    pass
+  elif isinstance(json_key, basestring):
+    json_key = json_key.encode()
+  else:
+    raise TypeError("expected json_key to be str or bytes")
+  if isinstance(scope, bytes):
+    pass
+  elif isinstance(scope, basestring):
+    scope = scope.encode()
+  else:
+    raise TypeError("expected scope to be str or bytes")
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_service_account_credentials_create(
+      json_key, scope, token_lifetime.c_time)
+  credentials.references.extend([json_key, scope])
+  return credentials
+
+def client_credentials_jwt(json_key, records.Timespec token_lifetime not None):
+  if isinstance(json_key, bytes):
+    pass
+  elif isinstance(json_key, basestring):
+    json_key = json_key.encode()
+  else:
+    raise TypeError("expected json_key to be str or bytes")
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_jwt_credentials_create(
+      json_key, token_lifetime.c_time)
+  credentials.references.append(json_key)
+  return credentials
+
+def client_credentials_refresh_token(json_refresh_token):
+  if isinstance(json_refresh_token, bytes):
+    pass
+  elif isinstance(json_refresh_token, basestring):
+    json_refresh_token = json_refresh_token.encode()
+  else:
+    raise TypeError("expected json_refresh_token to be str or bytes")
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_refresh_token_credentials_create(
+      json_refresh_token)
+  credentials.references.append(json_refresh_token)
+  return credentials
+
+def client_credentials_fake_transport_security():
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = (
+      grpc.grpc_fake_transport_security_credentials_create())
+  return credentials
+
+def client_credentials_iam(authorization_token, authority_selector):
+  if isinstance(authorization_token, bytes):
+    pass
+  elif isinstance(authorization_token, basestring):
+    authorization_token = authorization_token.encode()
+  else:
+    raise TypeError("expected authorization_token to be str or bytes")
+  if isinstance(authority_selector, bytes):
+    pass
+  elif isinstance(authority_selector, basestring):
+    authority_selector = authority_selector.encode()
+  else:
+    raise TypeError("expected authority_selector to be str or bytes")
+  cdef ClientCredentials credentials = ClientCredentials()
+  credentials.c_credentials = grpc.grpc_iam_credentials_create(
+      authorization_token, authority_selector)
+  credentials.references.append(authorization_token)
+  credentials.references.append(authority_selector)
+  return credentials
+
+def server_credentials_ssl(pem_root_certs, pem_key_cert_pairs):
+  if pem_root_certs is None:
+    pass
+  elif isinstance(pem_root_certs, bytes):
+    pass
+  elif isinstance(pem_root_certs, basestring):
+    pem_root_certs = pem_root_certs.encode()
+  else:
+    raise TypeError("expected pem_root_certs to be str or bytes")
+  pem_key_cert_pairs = list(pem_key_cert_pairs)
+  for pair in pem_key_cert_pairs:
+    if not isinstance(pair, records.SslPemKeyCertPair):
+      raise TypeError("expected pem_key_cert_pairs to be sequence of "
+                      "records.SslPemKeyCertPair")
+  cdef ServerCredentials credentials = ServerCredentials()
+  credentials.references.append(pem_key_cert_pairs)
+  credentials.references.append(pem_root_certs)
+  credentials.c_ssl_pem_key_cert_pairs_count = len(pem_key_cert_pairs)
+  credentials.c_ssl_pem_key_cert_pairs = (
+      <grpc.grpc_ssl_pem_key_cert_pair *>grpc.gpr_malloc(
+          sizeof(grpc.grpc_ssl_pem_key_cert_pair) *
+              credentials.c_ssl_pem_key_cert_pairs_count
+      ))
+  for i in range(credentials.c_ssl_pem_key_cert_pairs_count):
+    credentials.c_ssl_pem_key_cert_pairs[i] = (
+        (<records.SslPemKeyCertPair>pem_key_cert_pairs[i]).c_pair)
+  credentials.c_credentials = grpc.grpc_ssl_server_credentials_create(
+      pem_root_certs, credentials.c_ssl_pem_key_cert_pairs,
+      credentials.c_ssl_pem_key_cert_pairs_count
+  )
+  return credentials
+
+def server_credentials_fake_transport_security():
+  cdef ServerCredentials credentials = ServerCredentials()
+  credentials.c_credentials = (
+      grpc.grpc_fake_transport_security_server_credentials_create())
+  return credentials

src/python/src/grpc/_cython/_cygrpc/grpc.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/grpc.pxd b/src/python/src/grpc/_cython/_cygrpc/grpc.pxd
new file mode 100644
index 0000000..7db8fbe
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/grpc.pxd
@@ -0,0 +1,344 @@
+# 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.
+
+cimport libc.time
+
+
+cdef extern from "grpc/support/alloc.h":
+  void *gpr_malloc(size_t size)
+  void gpr_free(void *ptr)
+  void *gpr_realloc(void *p, size_t size)
+
+cdef extern from "grpc/support/slice.h":
+  ctypedef struct gpr_slice:
+    # don't worry about writing out the members of gpr_slice; we never access
+    # them directly.
+    pass
+
+  gpr_slice gpr_slice_ref(gpr_slice s)
+  void gpr_slice_unref(gpr_slice s)
+  gpr_slice gpr_slice_new(void *p, size_t len, void (*destroy)(void *))
+  gpr_slice gpr_slice_new_with_len(
+      void *p, size_t len, void (*destroy)(void *, size_t))
+  gpr_slice gpr_slice_malloc(size_t length)
+  gpr_slice gpr_slice_from_copied_string(const char *source)
+  gpr_slice gpr_slice_from_copied_buffer(const char *source, size_t len)
+
+  # Declare functions for function-like macros (because Cython)...
+  void *gpr_slice_start_ptr "GPR_SLICE_START_PTR" (gpr_slice s)
+  size_t gpr_slice_length "GPR_SLICE_LENGTH" (gpr_slice s)
+
+
+cdef extern from "grpc/support/port_platform.h":
+  # As long as the header file gets this type right, we don't need to get this
+  # type exactly; just close enough that the operations will be supported in the
+  # underlying C layers.
+  ctypedef unsigned int gpr_uint32
+
+
+cdef extern from "grpc/support/time.h":
+
+  ctypedef struct gpr_timespec:
+    libc.time.time_t seconds "tv_sec"
+    int nanoseconds "tv_nsec"
+
+  cdef gpr_timespec gpr_time_0
+  cdef gpr_timespec gpr_inf_future
+  cdef gpr_timespec gpr_inf_past
+
+  gpr_timespec gpr_now()
+
+
+cdef extern from "grpc/status.h":
+  ctypedef enum grpc_status_code:
+    GRPC_STATUS_OK
+    GRPC_STATUS_CANCELLED
+    GRPC_STATUS_UNKNOWN
+    GRPC_STATUS_INVALID_ARGUMENT
+    GRPC_STATUS_DEADLINE_EXCEEDED
+    GRPC_STATUS_NOT_FOUND
+    GRPC_STATUS_ALREADY_EXISTS
+    GRPC_STATUS_PERMISSION_DENIED
+    GRPC_STATUS_UNAUTHENTICATED
+    GRPC_STATUS_RESOURCE_EXHAUSTED
+    GRPC_STATUS_FAILED_PRECONDITION
+    GRPC_STATUS_ABORTED
+    GRPC_STATUS_OUT_OF_RANGE
+    GRPC_STATUS_UNIMPLEMENTED
+    GRPC_STATUS_INTERNAL
+    GRPC_STATUS_UNAVAILABLE
+    GRPC_STATUS_DATA_LOSS
+    GRPC_STATUS__DO_NOT_USE
+
+
+cdef extern from "grpc/byte_buffer_reader.h":
+  struct grpc_byte_buffer_reader:
+    # We don't care about the internals
+    pass
+
+
+cdef extern from "grpc/byte_buffer.h":
+  ctypedef struct grpc_byte_buffer:
+    # We don't care about the internals.
+    pass
+
+  grpc_byte_buffer *grpc_raw_byte_buffer_create(gpr_slice *slices,
+                                                size_t nslices)
+  size_t grpc_byte_buffer_length(grpc_byte_buffer *bb)
+  void grpc_byte_buffer_destroy(grpc_byte_buffer *byte_buffer)
+
+  void grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
+                                    grpc_byte_buffer *buffer)
+  int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
+                                   gpr_slice *slice)
+  void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader)
+
+
+cdef extern from "grpc/grpc.h":
+
+  ctypedef struct grpc_completion_queue:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  ctypedef struct grpc_channel:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  ctypedef struct grpc_server:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  ctypedef struct grpc_call:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  ctypedef enum grpc_arg_type:
+    grpc_arg_string "GRPC_ARG_STRING"
+    grpc_arg_integer "GRPC_ARG_INTEGER"
+    grpc_arg_pointer "GRPC_ARG_POINTER"
+
+  ctypedef struct grpc_arg_value_pointer:
+    void *address "p"
+    void *(*copy)(void *)
+    void (*destroy)(void *)
+
+  union grpc_arg_value:
+    char *string
+    int integer
+    grpc_arg_value_pointer pointer
+
+  ctypedef struct grpc_arg:
+    grpc_arg_type type
+    char *key
+    grpc_arg_value value
+
+  ctypedef struct grpc_channel_args:
+    size_t arguments_length "num_args"
+    grpc_arg *arguments "args"
+
+  ctypedef enum grpc_call_error:
+    GRPC_CALL_OK
+    GRPC_CALL_ERROR
+    GRPC_CALL_ERROR_NOT_ON_SERVER
+    GRPC_CALL_ERROR_NOT_ON_CLIENT
+    GRPC_CALL_ERROR_ALREADY_ACCEPTED
+    GRPC_CALL_ERROR_ALREADY_INVOKED
+    GRPC_CALL_ERROR_NOT_INVOKED
+    GRPC_CALL_ERROR_ALREADY_FINISHED
+    GRPC_CALL_ERROR_TOO_MANY_OPERATIONS
+    GRPC_CALL_ERROR_INVALID_FLAGS
+    GRPC_CALL_ERROR_INVALID_METADATA
+
+  ctypedef struct grpc_metadata:
+    const char *key
+    const char *value
+    size_t value_length
+    # ignore the 'internal_data.obfuscated' fields.
+
+  ctypedef enum grpc_completion_type:
+    GRPC_QUEUE_SHUTDOWN
+    GRPC_QUEUE_TIMEOUT
+    GRPC_OP_COMPLETE
+
+  ctypedef struct grpc_event:
+    grpc_completion_type type
+    int success
+    void *tag
+
+  ctypedef struct grpc_metadata_array:
+    size_t count
+    size_t capacity
+    grpc_metadata *metadata
+
+  void grpc_metadata_array_init(grpc_metadata_array *array)
+  void grpc_metadata_array_destroy(grpc_metadata_array *array)
+
+  ctypedef struct grpc_call_details:
+    char *method
+    size_t method_capacity
+    char *host
+    size_t host_capacity
+    gpr_timespec deadline
+
+  void grpc_call_details_init(grpc_call_details *details)
+  void grpc_call_details_destroy(grpc_call_details *details)
+
+  ctypedef enum grpc_op_type:
+    GRPC_OP_SEND_INITIAL_METADATA
+    GRPC_OP_SEND_MESSAGE
+    GRPC_OP_SEND_CLOSE_FROM_CLIENT
+    GRPC_OP_SEND_STATUS_FROM_SERVER
+    GRPC_OP_RECV_INITIAL_METADATA
+    GRPC_OP_RECV_MESSAGE
+    GRPC_OP_RECV_STATUS_ON_CLIENT
+    GRPC_OP_RECV_CLOSE_ON_SERVER
+
+  ctypedef struct grpc_op_data_send_initial_metadata:
+    size_t count
+    grpc_metadata *metadata
+
+  ctypedef struct grpc_op_data_send_status_from_server:
+    size_t trailing_metadata_count
+    grpc_metadata *trailing_metadata
+    grpc_status_code status
+    const char *status_details
+
+  ctypedef struct grpc_op_data_recv_status_on_client:
+    grpc_metadata_array *trailing_metadata
+    grpc_status_code *status
+    char **status_details
+    size_t *status_details_capacity
+
+  ctypedef struct grpc_op_data_recv_close_on_server:
+    int *cancelled
+
+  union grpc_op_data:
+    grpc_op_data_send_initial_metadata send_initial_metadata
+    grpc_byte_buffer *send_message
+    grpc_op_data_send_status_from_server send_status_from_server
+    grpc_metadata_array *receive_initial_metadata "recv_initial_metadata"
+    grpc_byte_buffer **receive_message "recv_message"
+    grpc_op_data_recv_status_on_client receive_status_on_client "recv_status_on_client"
+    grpc_op_data_recv_close_on_server receive_close_on_server "recv_close_on_server"
+
+  ctypedef struct grpc_op:
+    grpc_op_type type "op"
+    gpr_uint32 flags
+    grpc_op_data data
+
+  void grpc_init()
+  void grpc_shutdown()
+
+  grpc_completion_queue *grpc_completion_queue_create()
+  grpc_event grpc_completion_queue_next(grpc_completion_queue *cq,
+                                        gpr_timespec deadline) nogil
+  void grpc_completion_queue_shutdown(grpc_completion_queue *cq)
+  void grpc_completion_queue_destroy(grpc_completion_queue *cq)
+
+  grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops,
+                                        size_t nops, void *tag)
+  grpc_call_error grpc_call_cancel(grpc_call *call)
+  grpc_call_error grpc_call_cancel_with_status(grpc_call *call,
+                                               grpc_status_code status,
+                                               const char *description)
+  void grpc_call_destroy(grpc_call *call)
+
+
+  grpc_channel *grpc_channel_create(const char *target,
+                                    const grpc_channel_args *args)
+  grpc_call *grpc_channel_create_call(grpc_channel *channel,
+                                      grpc_completion_queue *completion_queue,
+                                      const char *method, const char *host,
+                                      gpr_timespec deadline)
+  void grpc_channel_destroy(grpc_channel *channel)
+
+  grpc_server *grpc_server_create(const grpc_channel_args *args)
+  grpc_call_error grpc_server_request_call(
+      grpc_server *server, grpc_call **call, grpc_call_details *details,
+      grpc_metadata_array *request_metadata, grpc_completion_queue
+      *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void
+      *tag_new)
+  void grpc_server_register_completion_queue(grpc_server *server,
+                                             grpc_completion_queue *cq)
+  int grpc_server_add_http2_port(grpc_server *server, const char *addr)
+  void grpc_server_start(grpc_server *server)
+  void grpc_server_shutdown_and_notify(
+      grpc_server *server, grpc_completion_queue *cq, void *tag)
+  void grpc_server_cancel_all_calls(grpc_server *server)
+  void grpc_server_destroy(grpc_server *server)
+
+
+cdef extern from "grpc/grpc_security.h":
+
+  ctypedef struct grpc_ssl_pem_key_cert_pair:
+    const char *private_key
+    const char *certificate_chain "cert_chain"
+
+  ctypedef struct grpc_credentials:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  grpc_credentials *grpc_google_default_credentials_create()
+  grpc_credentials *grpc_ssl_credentials_create(
+      const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair)
+
+  grpc_credentials *grpc_composite_credentials_create(grpc_credentials *creds1,
+                                                      grpc_credentials *creds2)
+  grpc_credentials *grpc_compute_engine_credentials_create()
+  grpc_credentials *grpc_service_account_credentials_create(
+      const char *json_key, const char *scope, gpr_timespec token_lifetime)
+  grpc_credentials *grpc_jwt_credentials_create(const char *json_key,
+                                                gpr_timespec token_lifetime)
+  grpc_credentials *grpc_refresh_token_credentials_create(
+      const char *json_refresh_token)
+  grpc_credentials *grpc_fake_transport_security_credentials_create()
+  grpc_credentials *grpc_iam_credentials_create(const char *authorization_token,
+                                                const char *authority_selector)
+  void grpc_credentials_release(grpc_credentials *creds)
+
+  grpc_channel *grpc_secure_channel_create(
+      grpc_credentials *creds, const char *target,
+      const grpc_channel_args *args)
+
+  ctypedef struct grpc_server_credentials:
+    # We don't care about the internals (and in fact don't know them)
+    pass
+
+  grpc_server_credentials *grpc_ssl_server_credentials_create(
+      const char *pem_root_certs,
+      grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
+      size_t num_key_cert_pairs);
+  grpc_server_credentials *grpc_fake_transport_security_server_credentials_create()
+  void grpc_server_credentials_release(grpc_server_credentials *creds)
+
+  int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
+                                        grpc_server_credentials *creds)
+
+  grpc_call_error grpc_call_set_credentials(grpc_call *call,
+                                            grpc_credentials *creds)

src/python/src/grpc/_cython/_cygrpc/records.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/records.pxd b/src/python/src/grpc/_cython/_cygrpc/records.pxd
new file mode 100644
index 0000000..9ee4878
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/records.pxd
@@ -0,0 +1,129 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport server
+
+
+cdef class Timespec:
+
+  cdef grpc.gpr_timespec c_time
+
+
+cdef class CallDetails:
+
+  cdef grpc.grpc_call_details c_details
+
+
+cdef class OperationTag:
+
+  cdef object user_tag
+  cdef list references
+  # This allows CompletionQueue to notify the Python Server object that the
+  # underlying GRPC core server has shutdown
+  cdef server.Server shutting_down_server
+  cdef call.Call operation_call
+  cdef CallDetails request_call_details
+  cdef Metadata request_metadata
+  cdef Operations batch_operations
+  cdef bint is_new_request
+
+
+cdef class Event:
+
+  cdef readonly grpc.grpc_completion_type type
+  cdef readonly bint success
+  cdef readonly object tag
+
+  # For operations with calls
+  cdef readonly call.Call operation_call
+
+  # For Server.request_call
+  cdef readonly CallDetails request_call_details
+  cdef readonly Metadata request_metadata
+
+  # For Call.start_batch
+  cdef readonly Operations batch_operations
+
+
+cdef class ByteBuffer:
+
+  cdef grpc.grpc_byte_buffer *c_byte_buffer
+
+
+cdef class SslPemKeyCertPair:
+
+  cdef grpc.grpc_ssl_pem_key_cert_pair c_pair
+  cdef readonly object private_key, certificate_chain
+
+
+cdef class ChannelArg:
+
+  cdef grpc.grpc_arg c_arg
+  cdef readonly object key, value
+
+
+cdef class ChannelArgs:
+
+  cdef grpc.grpc_channel_args c_args
+  cdef list args
+
+
+cdef class Metadatum:
+
+  cdef grpc.grpc_metadata c_metadata
+  cdef object _key, _value
+
+
+cdef class Metadata:
+
+  cdef grpc.grpc_metadata_array c_metadata_array
+  cdef object metadata
+
+
+cdef class Operation:
+
+  cdef grpc.grpc_op c_op
+  cdef ByteBuffer _received_message
+  cdef Metadata _received_metadata
+  cdef grpc.grpc_status_code _received_status_code
+  cdef char *_received_status_details
+  cdef size_t _received_status_details_capacity
+  cdef int _received_cancelled
+  cdef readonly bint is_valid
+  cdef object references
+
+
+cdef class Operations:
+
+  cdef grpc.grpc_op *c_ops
+  cdef size_t c_nops
+  cdef list operations
+

src/python/src/grpc/_cython/_cygrpc/records.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/records.pyx b/src/python/src/grpc/_cython/_cygrpc/records.pyx
new file mode 100644
index 0000000..4814769
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/records.pyx
@@ -0,0 +1,575 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport server
+
+
+class StatusCode:
+  ok = grpc.GRPC_STATUS_OK
+  cancelled = grpc.GRPC_STATUS_CANCELLED
+  unknown = grpc.GRPC_STATUS_UNKNOWN
+  invalid_argument = grpc.GRPC_STATUS_INVALID_ARGUMENT
+  deadline_exceeded = grpc.GRPC_STATUS_DEADLINE_EXCEEDED
+  not_found = grpc.GRPC_STATUS_NOT_FOUND
+  already_exists = grpc.GRPC_STATUS_ALREADY_EXISTS
+  permission_denied = grpc.GRPC_STATUS_PERMISSION_DENIED
+  unauthenticated = grpc.GRPC_STATUS_UNAUTHENTICATED
+  resource_exhausted = grpc.GRPC_STATUS_RESOURCE_EXHAUSTED
+  failed_precondition = grpc.GRPC_STATUS_FAILED_PRECONDITION
+  aborted = grpc.GRPC_STATUS_ABORTED
+  out_of_range = grpc.GRPC_STATUS_OUT_OF_RANGE
+  unimplemented = grpc.GRPC_STATUS_UNIMPLEMENTED
+  internal = grpc.GRPC_STATUS_INTERNAL
+  unavailable = grpc.GRPC_STATUS_UNAVAILABLE
+  data_loss = grpc.GRPC_STATUS_DATA_LOSS
+
+
+class CallError:
+  ok = grpc.GRPC_CALL_OK
+  error = grpc.GRPC_CALL_ERROR
+  not_on_server = grpc.GRPC_CALL_ERROR_NOT_ON_SERVER
+  not_on_client = grpc.GRPC_CALL_ERROR_NOT_ON_CLIENT
+  already_accepted = grpc.GRPC_CALL_ERROR_ALREADY_ACCEPTED
+  already_invoked = grpc.GRPC_CALL_ERROR_ALREADY_INVOKED
+  not_invoked = grpc.GRPC_CALL_ERROR_NOT_INVOKED
+  already_finished = grpc.GRPC_CALL_ERROR_ALREADY_FINISHED
+  too_many_operations = grpc.GRPC_CALL_ERROR_TOO_MANY_OPERATIONS
+  invalid_flags = grpc.GRPC_CALL_ERROR_INVALID_FLAGS
+  invalid_metadata = grpc.GRPC_CALL_ERROR_INVALID_METADATA
+
+
+class CompletionType:
+  queue_shutdown = grpc.GRPC_QUEUE_SHUTDOWN
+  queue_timeout = grpc.GRPC_QUEUE_TIMEOUT
+  operation_complete = grpc.GRPC_OP_COMPLETE
+
+
+class OperationType:
+  send_initial_metadata = grpc.GRPC_OP_SEND_INITIAL_METADATA
+  send_message = grpc.GRPC_OP_SEND_MESSAGE
+  send_close_from_client = grpc.GRPC_OP_SEND_CLOSE_FROM_CLIENT
+  send_status_from_server = grpc.GRPC_OP_SEND_STATUS_FROM_SERVER
+  receive_initial_metadata = grpc.GRPC_OP_RECV_INITIAL_METADATA
+  receive_message = grpc.GRPC_OP_RECV_MESSAGE
+  receive_status_on_client = grpc.GRPC_OP_RECV_STATUS_ON_CLIENT
+  receive_close_on_server = grpc.GRPC_OP_RECV_CLOSE_ON_SERVER
+
+
+cdef class Timespec:
+
+  def __cinit__(self, time):
+    if time is None:
+      self.c_time = grpc.gpr_now()
+    elif isinstance(time, float):
+      if time == float("+inf"):
+        self.c_time = grpc.gpr_inf_future
+      elif time == float("-inf"):
+        self.c_time = grpc.gpr_inf_past
+      else:
+        self.c_time.seconds = time
+        self.c_time.nanoseconds = (time - float(self.c_time.seconds)) * 1e9
+    else:
+      raise TypeError("expected time to be float")
+
+  @property
+  def seconds(self):
+    return self.c_time.seconds
+
+  @property
+  def nanoseconds(self):
+    return self.c_time.nanoseconds
+
+  def __float__(self):
+    return <double>self.c_time.seconds + <double>self.c_time.nanoseconds / 1e9
+
+  infinite_future = Timespec(float("+inf"))
+  infinite_past = Timespec(float("-inf"))
+
+
+cdef class CallDetails:
+
+  def __cinit__(self):
+    grpc.grpc_call_details_init(&self.c_details)
+
+  def __dealloc__(self):
+    grpc.grpc_call_details_destroy(&self.c_details)
+
+  @property
+  def method(self):
+    if self.c_details.method != NULL:
+      return <bytes>self.c_details.method
+    else:
+      return None
+
+  @property
+  def host(self):
+    if self.c_details.host != NULL:
+      return <bytes>self.c_details.host
+    else:
+      return None
+
+  @property
+  def deadline(self):
+    timespec = Timespec(float("-inf"))
+    timespec.c_time = self.c_details.deadline
+    return timespec
+
+
+cdef class OperationTag:
+
+  def __cinit__(self, user_tag):
+    self.user_tag = user_tag
+    self.references = []
+
+
+cdef class Event:
+
+  def __cinit__(self, grpc.grpc_completion_type type, bint success,
+                object tag, call.Call operation_call,
+                CallDetails request_call_details,
+                Metadata request_metadata,
+                Operations batch_operations):
+    self.type = type
+    self.success = success
+    self.tag = tag
+    self.operation_call = operation_call
+    self.request_call_details = request_call_details
+    self.request_metadata = request_metadata
+    self.batch_operations = batch_operations
+
+
+cdef class ByteBuffer:
+
+  def __cinit__(self, data):
+    if data is None:
+      self.c_byte_buffer = NULL
+      return
+    if isinstance(data, bytes):
+      pass
+    elif isinstance(data, basestring):
+      data = data.encode()
+    else:
+      raise TypeError("expected value to be of type str or bytes")
+
+    cdef char *c_data = data
+    data_slice = grpc.gpr_slice_from_copied_buffer(c_data, len(data))
+    self.c_byte_buffer = grpc.grpc_raw_byte_buffer_create(
+        &data_slice, 1)
+    grpc.gpr_slice_unref(data_slice)
+
+  def bytes(self):
+    cdef grpc.grpc_byte_buffer_reader reader
+    cdef grpc.gpr_slice data_slice
+    cdef size_t data_slice_length
+    cdef void *data_slice_pointer
+    if self.c_byte_buffer != NULL:
+      grpc.grpc_byte_buffer_reader_init(&reader, self.c_byte_buffer)
+      result = b""
+      while grpc.grpc_byte_buffer_reader_next(&reader, &data_slice):
+        data_slice_pointer = grpc.gpr_slice_start_ptr(data_slice)
+        data_slice_length = grpc.gpr_slice_length(data_slice)
+        result += (<char *>data_slice_pointer)[:data_slice_length]
+      grpc.grpc_byte_buffer_reader_destroy(&reader)
+      return result
+    else:
+      return None
+
+  def __len__(self):
+    if self.c_byte_buffer != NULL:
+      return grpc.grpc_byte_buffer_length(self.c_byte_buffer)
+    else:
+      return 0
+
+  def __str__(self):
+    return self.bytes()
+
+  def __dealloc__(self):
+    if self.c_byte_buffer != NULL:
+      grpc.grpc_byte_buffer_destroy(self.c_byte_buffer)
+
+
+cdef class SslPemKeyCertPair:
+
+  def __cinit__(self, private_key, certificate_chain):
+    if isinstance(private_key, bytes):
+      self.private_key = private_key
+    elif isinstance(private_key, basestring):
+      self.private_key = private_key.encode()
+    else:
+      raise TypeError("expected private_key to be of type str or bytes")
+    if isinstance(certificate_chain, bytes):
+      self.certificate_chain = certificate_chain
+    elif isinstance(certificate_chain, basestring):
+      self.certificate_chain = certificate_chain.encode()
+    else:
+      raise TypeError("expected certificate_chain to be of type str or bytes "
+                      "or int")
+    self.c_pair.private_key = self.private_key
+    self.c_pair.certificate_chain = self.certificate_chain
+
+
+cdef class ChannelArg:
+
+  def __cinit__(self, key, value):
+    if isinstance(key, bytes):
+      self.key = key
+    elif isinstance(key, basestring):
+      self.key = key.encode()
+    else:
+      raise TypeError("expected key to be of type str or bytes")
+    if isinstance(value, bytes):
+      self.value = value
+      self.c_arg.type = grpc.GRPC_ARG_STRING
+      self.c_arg.value.string = self.value
+    elif isinstance(value, basestring):
+      self.value = value.encode()
+      self.c_arg.type = grpc.GRPC_ARG_STRING
+      self.c_arg.value.string = self.value
+    elif isinstance(value, int):
+      self.value = int(value)
+      self.c_arg.type = grpc.GRPC_ARG_INTEGER
+      self.c_arg.value.integer = self.value
+    else:
+      raise TypeError("expected value to be of type str or bytes or int")
+    self.c_arg.key = self.key
+
+
+cdef class ChannelArgs:
+
+  def __cinit__(self, args):
+    self.args = list(args)
+    for arg in self.args:
+      if not isinstance(arg, ChannelArg):
+        raise TypeError("expected list of ChannelArg")
+    self.c_args.arguments_length = len(self.args)
+    self.c_args.arguments = <grpc.grpc_arg *>grpc.gpr_malloc(
+        self.c_args.arguments_length*sizeof(grpc.grpc_arg)
+    )
+    for i in range(self.c_args.arguments_length):
+      self.c_args.arguments[i] = (<ChannelArg>self.args[i]).c_arg
+
+  def __dealloc__(self):
+    grpc.gpr_free(self.c_args.arguments)
+
+  def __len__(self):
+    # self.args is never stale; it's only updated from this file
+    return len(self.args)
+
+  def __getitem__(self, size_t i):
+    # self.args is never stale; it's only updated from this file
+    return self.args[i]
+
+
+cdef class Metadatum:
+
+  def __cinit__(self, key, value):
+    if isinstance(key, bytes):
+      self._key = key
+    elif isinstance(key, basestring):
+      self._key = key.encode()
+    else:
+      raise TypeError("expected key to be of type str or bytes")
+    if isinstance(value, bytes):
+      self._value = value
+    elif isinstance(value, basestring):
+      self._value = value.encode()
+    else:
+      raise TypeError("expected value to be of type str or bytes")
+    self.c_metadata.key = self._key
+    self.c_metadata.value = self._value
+    self.c_metadata.value_length = len(self._value)
+
+  @property
+  def key(self):
+    return <bytes>self.c_metadata.key
+
+  @property
+  def value(self):
+    return <bytes>self.c_metadata.value[:self.c_metadata.value_length]
+
+  def __len__(self):
+    return 2
+
+  def __getitem__(self, size_t i):
+    if i == 0:
+      return self.key
+    elif i == 1:
+      return self.value
+    else:
+      raise IndexError("index must be 0 (key) or 1 (value)")
+
+  def __iter__(self):
+    return iter((self.key, self.value))
+
+
+cdef class _MetadataIterator:
+
+  cdef size_t i
+  cdef Metadata metadata
+
+  def __cinit__(self, Metadata metadata not None):
+    self.i = 0
+    self.metadata = metadata
+
+  def __next__(self):
+    if self.i < len(self.metadata):
+      result = self.metadata[self.i]
+      self.i = self.i + 1
+      return result
+    else:
+      raise StopIteration()
+
+
+cdef class Metadata:
+
+  def __cinit__(self, metadata):
+    self.metadata = list(metadata)
+    for metadatum in metadata:
+      if not isinstance(metadatum, Metadatum):
+        raise TypeError("expected list of Metadatum")
+    grpc.grpc_metadata_array_init(&self.c_metadata_array)
+    self.c_metadata_array.count = len(self.metadata)
+    self.c_metadata_array.capacity = len(self.metadata)
+    self.c_metadata_array.metadata = <grpc.grpc_metadata *>grpc.gpr_malloc(
+        self.c_metadata_array.count*sizeof(grpc.grpc_metadata)
+    )
+    for i in range(self.c_metadata_array.count):
+      self.c_metadata_array.metadata[i] = (
+          (<Metadatum>self.metadata[i]).c_metadata)
+
+  def __dealloc__(self):
+    # this frees the allocated memory for the grpc_metadata_array (although
+    # it'd be nice if that were documented somewhere...) TODO(atash): document
+    # this in the C core
+    grpc.grpc_metadata_array_destroy(&self.c_metadata_array)
+
+  def __len__(self):
+    return self.c_metadata_array.count
+
+  def __getitem__(self, size_t i):
+    return Metadatum(
+        key=<bytes>self.c_metadata_array.metadata[i].key,
+        value=<bytes>self.c_metadata_array.metadata[i].value[
+            :self.c_metadata_array.metadata[i].value_length])
+
+  def __iter__(self):
+    return _MetadataIterator(self)
+
+
+cdef class Operation:
+
+  def __cinit__(self):
+    self.references = []
+    self._received_status_details = NULL
+    self._received_status_details_capacity = 0
+    self.is_valid = False
+
+  @property
+  def type(self):
+    return self.c_op.type
+
+  @property
+  def received_message(self):
+    if self.c_op.type != grpc.GRPC_OP_RECV_MESSAGE:
+      raise TypeError("self must be an operation receiving a message")
+    return self._received_message
+
+  @property
+  def received_metadata(self):
+    if (self.c_op.type != grpc.GRPC_OP_RECV_INITIAL_METADATA and
+        self.c_op.type != grpc.GRPC_OP_RECV_STATUS_ON_CLIENT):
+      raise TypeError("self must be an operation receiving metadata")
+    return self._received_metadata
+
+  @property
+  def received_status_code(self):
+    if self.c_op.type != grpc.GRPC_OP_RECV_STATUS_ON_CLIENT:
+      raise TypeError("self must be an operation receiving a status code")
+    return self._received_status_code
+
+  @property
+  def received_status_details(self):
+    if self.c_op.type != grpc.GRPC_OP_RECV_STATUS_ON_CLIENT:
+      raise TypeError("self must be an operation receiving status details")
+    if self._received_status_details:
+      return self._received_status_details
+    else:
+      return None
+
+  @property
+  def received_cancelled(self):
+    if self.c_op.type != grpc.GRPC_OP_RECV_CLOSE_ON_SERVER:
+      raise TypeError("self must be an operation receiving cancellation "
+                      "information")
+    return False if self._received_cancelled == 0 else True
+
+  def __dealloc__(self):
+    # We *almost* don't need to do anything; most of the objects are handled by
+    # Python. The remaining one(s) are primitive fields filled in by GRPC core.
+    # This means that we need to clean up after receive_status_on_client.
+    if self.c_op.type == grpc.GRPC_OP_RECV_STATUS_ON_CLIENT:
+      grpc.gpr_free(self._received_status_details)
+
+def operation_send_initial_metadata(Metadata metadata):
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_SEND_INITIAL_METADATA
+  op.c_op.data.send_initial_metadata.count = metadata.c_metadata_array.count
+  op.c_op.data.send_initial_metadata.metadata = (
+      metadata.c_metadata_array.metadata)
+  op.references.append(metadata)
+  op.is_valid = True
+  return op
+
+def operation_send_message(data):
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_SEND_MESSAGE
+  byte_buffer = ByteBuffer(data)
+  op.c_op.data.send_message = byte_buffer.c_byte_buffer
+  op.references.append(byte_buffer)
+  op.is_valid = True
+  return op
+
+def operation_send_close_from_client():
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_SEND_CLOSE_FROM_CLIENT
+  op.is_valid = True
+  return op
+
+def operation_send_status_from_server(
+    Metadata metadata, grpc.grpc_status_code code, details):
+  if isinstance(details, bytes):
+    pass
+  elif isinstance(details, basestring):
+    details = details.encode()
+  else:
+    raise TypeError("expected a str or bytes object for details")
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_SEND_STATUS_FROM_SERVER
+  op.c_op.data.send_status_from_server.trailing_metadata_count = (
+      metadata.c_metadata_array.count)
+  op.c_op.data.send_status_from_server.trailing_metadata = (
+      metadata.c_metadata_array.metadata)
+  op.c_op.data.send_status_from_server.status = code
+  op.c_op.data.send_status_from_server.status_details = details
+  op.references.append(metadata)
+  op.references.append(details)
+  op.is_valid = True
+  return op
+
+def operation_receive_initial_metadata():
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_RECV_INITIAL_METADATA
+  op._received_metadata = Metadata([])
+  op.c_op.data.receive_initial_metadata = (
+      &op._received_metadata.c_metadata_array)
+  op.is_valid = True
+  return op
+
+def operation_receive_message():
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_RECV_MESSAGE
+  op._received_message = ByteBuffer(None)
+  # n.b. the c_op.data.receive_message field needs to be deleted by us,
+  # anyway, so we just let that be handled by the ByteBuffer() we allocated
+  # the line before.
+  op.c_op.data.receive_message = &op._received_message.c_byte_buffer
+  op.is_valid = True
+  return op
+
+def operation_receive_status_on_client():
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_RECV_STATUS_ON_CLIENT
+  op._received_metadata = Metadata([])
+  op.c_op.data.receive_status_on_client.trailing_metadata = (
+      &op._received_metadata.c_metadata_array)
+  op.c_op.data.receive_status_on_client.status = (
+      &op._received_status_code)
+  op.c_op.data.receive_status_on_client.status_details = (
+      &op._received_status_details)
+  op.c_op.data.receive_status_on_client.status_details_capacity = (
+      &op._received_status_details_capacity)
+  op.is_valid = True
+  return op
+
+def operation_receive_close_on_server():
+  cdef Operation op = Operation()
+  op.c_op.type = grpc.GRPC_OP_RECV_CLOSE_ON_SERVER
+  op.c_op.data.receive_close_on_server.cancelled = &op._received_cancelled
+  op.is_valid = True
+  return op
+
+
+cdef class _OperationsIterator:
+
+  cdef size_t i
+  cdef Operations operations
+
+  def __cinit__(self, Operations operations not None):
+    self.i = 0
+    self.operations = operations
+
+  def __next__(self):
+    if self.i < len(self.operations):
+      result = self.operations[self.i]
+      self.i = self.i + 1
+      return result
+    else:
+      raise StopIteration()
+
+
+cdef class Operations:
+
+  def __cinit__(self, operations):
+    self.operations = list(operations)  # normalize iterable
+    self.c_ops = NULL
+    self.c_nops = 0
+    for operation in self.operations:
+      if not isinstance(operation, Operation):
+        raise TypeError("expected operations to be iterable of Operation")
+    self.c_nops = len(self.operations)
+    self.c_ops = <grpc.grpc_op *>grpc.gpr_malloc(
+        sizeof(grpc.grpc_op)*self.c_nops)
+    for i in range(self.c_nops):
+      self.c_ops[i] = (<Operation>(self.operations[i])).c_op
+
+  def __len__(self):
+    return self.c_nops
+
+  def __getitem__(self, size_t i):
+    # self.operations is never stale; it's only updated from this file
+    return self.operations[i]
+
+  def __dealloc__(self):
+    grpc.gpr_free(self.c_ops)
+
+  def __iter__(self):
+    return _OperationsIterator(self)
+

src/python/src/grpc/_cython/_cygrpc/server.pxd

diff --git a/src/python/src/grpc/_cython/_cygrpc/server.pxd b/src/python/src/grpc/_cython/_cygrpc/server.pxd
new file mode 100644
index 0000000..0257542
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/server.pxd
@@ -0,0 +1,45 @@
+# 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.
+
+from grpc._cython._cygrpc cimport grpc
+from grpc._cython._cygrpc cimport completion_queue
+
+
+cdef class Server:
+
+  cdef grpc.grpc_server *c_server
+  cdef bint is_started  # start has been called
+  cdef bint is_shutting_down  # shutdown has been called
+  cdef bint is_shutdown  # notification of complete shutdown received
+  # used at dealloc when user forgets to shutdown
+  cdef completion_queue.CompletionQueue backup_shutdown_queue
+  cdef list references
+  cdef list registered_completion_queues
+
+  cdef notify_shutdown_complete(self)

src/python/src/grpc/_cython/_cygrpc/server.pyx

diff --git a/src/python/src/grpc/_cython/_cygrpc/server.pyx b/src/python/src/grpc/_cython/_cygrpc/server.pyx
new file mode 100644
index 0000000..dcf9d38
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/server.pyx
@@ -0,0 +1,158 @@
+# 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.
+
+cimport cpython
+
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport completion_queue
+from grpc._cython._cygrpc cimport credentials
+from grpc._cython._cygrpc cimport records
+
+import time
+
+
+cdef class Server:
+
+  def __cinit__(self, records.ChannelArgs arguments=None):
+    cdef grpc.grpc_channel_args *c_arguments = NULL
+    self.references = []
+    self.registered_completion_queues = []
+    if arguments is not None:
+      c_arguments = &arguments.c_args
+      self.references.append(arguments)
+    self.c_server = grpc.grpc_server_create(c_arguments)
+    self.is_started = False
+    self.is_shutting_down = False
+    self.is_shutdown = False
+
+  def request_call(
+      self, completion_queue.CompletionQueue call_queue not None,
+      completion_queue.CompletionQueue server_queue not None, tag):
+    if not self.is_started or self.is_shutting_down:
+      raise ValueError("server must be started and not shutting down")
+    if server_queue not in self.registered_completion_queues:
+      raise ValueError("server_queue must be a registered completion queue")
+    cdef records.OperationTag operation_tag = records.OperationTag(tag)
+    operation_tag.operation_call = call.Call()
+    operation_tag.request_call_details = records.CallDetails()
+    operation_tag.request_metadata = records.Metadata([])
+    operation_tag.references.extend([self, call_queue, server_queue])
+    operation_tag.is_new_request = True
+    operation_tag.batch_operations = records.Operations([])
+    cpython.Py_INCREF(operation_tag)
+    return grpc.grpc_server_request_call(
+        self.c_server, &operation_tag.operation_call.c_call,
+        &operation_tag.request_call_details.c_details,
+        &operation_tag.request_metadata.c_metadata_array,
+        call_queue.c_completion_queue, server_queue.c_completion_queue,
+        <cpython.PyObject *>operation_tag)
+
+  def register_completion_queue(
+      self, completion_queue.CompletionQueue queue not None):
+    if self.is_started:
+      raise ValueError("cannot register completion queues after start")
+    grpc.grpc_server_register_completion_queue(
+        self.c_server, queue.c_completion_queue)
+    self.registered_completion_queues.append(queue)
+
+  def start(self):
+    if self.is_started:
+      raise ValueError("the server has already started")
+    self.backup_shutdown_queue = completion_queue.CompletionQueue()
+    self.register_completion_queue(self.backup_shutdown_queue)
+    self.is_started = True
+    grpc.grpc_server_start(self.c_server)
+
+  def add_http2_port(self, address,
+                     credentials.ServerCredentials server_credentials=None):
+    if isinstance(address, bytes):
+      pass
+    elif isinstance(address, basestring):
+      address = address.encode()
+    else:
+      raise TypeError("expected address to be a str or bytes")
+    self.references.append(address)
+    if server_credentials is not None:
+      self.references.append(server_credentials)
+      return grpc.grpc_server_add_secure_http2_port(
+          self.c_server, address, server_credentials.c_credentials)
+    else:
+      return grpc.grpc_server_add_http2_port(self.c_server, address)
+
+  def shutdown(self, completion_queue.CompletionQueue queue not None, tag):
+    cdef records.OperationTag operation_tag
+    if queue.is_shutting_down:
+      raise ValueError("queue must be live")
+    elif not self.is_started:
+      raise ValueError("the server hasn't started yet")
+    elif self.is_shutting_down:
+      return
+    elif queue not in self.registered_completion_queues:
+      raise ValueError("expected registered completion queue")
+    else:
+      self.is_shutting_down = True
+      operation_tag = records.OperationTag(tag)
+      operation_tag.shutting_down_server = self
+      operation_tag.references.extend([self, queue])
+      cpython.Py_INCREF(operation_tag)
+      grpc.grpc_server_shutdown_and_notify(
+          self.c_server, queue.c_completion_queue,
+          <cpython.PyObject *>operation_tag)
+
+  cdef notify_shutdown_complete(self):
+    # called only by a completion queue on receiving our shutdown operation tag
+    self.is_shutdown = True
+
+  def cancel_all_calls(self):
+    if not self.is_shutting_down:
+      raise ValueError("the server must be shutting down to cancel all calls")
+    elif self.is_shutdown:
+      return
+    else:
+      grpc.grpc_server_cancel_all_calls(self.c_server)
+
+  def __dealloc__(self):
+    if self.c_server != NULL:
+      if not self.is_started:
+        pass
+      elif self.is_shutdown:
+        pass
+      elif not self.is_shutting_down:
+        # the user didn't call shutdown - use our backup queue
+        self.shutdown(self.backup_shutdown_queue, None)
+        # and now we wait
+        while not self.is_shutdown:
+          self.backup_shutdown_queue.poll()
+      else:
+        # We're in the process of shutting down, but have not shutdown; can't do
+        # much but repeatedly release the GIL and wait
+        while not self.is_shutdown:
+          time.sleep(0)
+      grpc.grpc_server_destroy(self.c_server)
+

src/python/src/grpc/_cython/adapter_low.py

diff --git a/src/python/src/grpc/_cython/adapter_low.py b/src/python/src/grpc/_cython/adapter_low.py
new file mode 100644
index 0000000..7546dd1
--- /dev/null
+++ b/src/python/src/grpc/_cython/adapter_low.py
@@ -0,0 +1,114 @@
+# 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.
+
+
+# Adapter from grpc._cython.types to the surface expected by
+# grpc._adapter._intermediary_low.
+#
+# TODO(atash): Once this is plugged into grpc._adapter._intermediary_low, remove
+# both grpc._adapter._intermediary_low and this file. The fore and rear links in
+# grpc._adapter should be able to use grpc._cython.types directly.
+
+from grpc._adapter import _types as type_interfaces
+from grpc._cython import cygrpc
+
+
+class ClientCredentials(object):
+  def __init__(self):
+    raise NotImplementedError()
+
+  @staticmethod
+  def google_default():
+    raise NotImplementedError()
+
+  @staticmethod
+  def ssl():
+    raise NotImplementedError()
+
+  @staticmethod
+  def composite():
+    raise NotImplementedError()
+
+  @staticmethod
+  def compute_engine():
+    raise NotImplementedError()
+
+  @staticmethod
+  def service_account():
+    raise NotImplementedError()
+
+  @staticmethod
+  def jwt():
+    raise NotImplementedError()
+
+  @staticmethod
+  def refresh_token():
+    raise NotImplementedError()
+
+  @staticmethod
+  def fake_transport_security():
+    raise NotImplementedError()
+
+  @staticmethod
+  def iam():
+    raise NotImplementedError()
+
+
+class ServerCredentials(object):
+  def __init__(self):
+    raise NotImplementedError()
+
+  @staticmethod
+  def ssl():
+    raise NotImplementedError()
+
+  @staticmethod
+  def fake_transport_security():
+    raise NotImplementedError()
+
+
+class CompletionQueue(type_interfaces.CompletionQueue):
+  def __init__(self):
+    raise NotImplementedError()
+
+
+class Call(type_interfaces.Call):
+  def __init__(self):
+    raise NotImplementedError()
+
+
+class Channel(type_interfaces.Channel):
+  def __init__(self):
+    raise NotImplementedError()
+
+
+class Server(type_interfaces.Server):
+  def __init__(self):
+    raise NotImplementedError()
+

src/python/src/grpc/_cython/adapter_low_test.py

diff --git a/src/python/src/grpc/_cython/adapter_low_test.py b/src/python/src/grpc/_cython/adapter_low_test.py
new file mode 100644
index 0000000..9bab930
--- /dev/null
+++ b/src/python/src/grpc/_cython/adapter_low_test.py
@@ -0,0 +1,187 @@
+# 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.
+
+# Fork of grpc._adapter._low_test; the grpc._cython.types adapter in
+# grpc._cython.low should transparently support the semantics expected of
+# grpc._adapter._low.
+
+import time
+import unittest
+
+from grpc._adapter import _types
+from grpc._cython import adapter_low as _low
+
+
+class InsecureServerInsecureClient(unittest.TestCase):
+
+  def setUp(self):
+    self.server_completion_queue = _low.CompletionQueue()
+    self.server = _low.Server(self.server_completion_queue, [])
+    self.port = self.server.add_http2_port('[::]:0')
+    self.client_completion_queue = _low.CompletionQueue()
+    self.client_channel = _low.Channel('localhost:%d'%self.port, [])
+
+    self.server.start()
+
+  def tearDown(self):
+    self.server.shutdown()
+    del self.client_channel
+
+    self.client_completion_queue.shutdown()
+    while (self.client_completion_queue.next().type !=
+               _types.EventType.QUEUE_SHUTDOWN):
+      pass
+    self.server_completion_queue.shutdown()
+    while (self.server_completion_queue.next().type !=
+               _types.EventType.QUEUE_SHUTDOWN):
+      pass
+
+    del self.client_completion_queue
+    del self.server_completion_queue
+    del self.server
+
+  @unittest.skip('TODO(atash): implement grpc._cython.adapter_low')
+  def testEcho(self):
+    DEADLINE = time.time()+5
+    DEADLINE_TOLERANCE = 0.25
+    CLIENT_METADATA_ASCII_KEY = 'key'
+    CLIENT_METADATA_ASCII_VALUE = 'val'
+    CLIENT_METADATA_BIN_KEY = 'key-bin'
+    CLIENT_METADATA_BIN_VALUE = b'\0'*1000
+    SERVER_INITIAL_METADATA_KEY = 'init_me_me_me'
+    SERVER_INITIAL_METADATA_VALUE = 'whodawha?'
+    SERVER_TRAILING_METADATA_KEY = 'California_is_in_a_drought'
+    SERVER_TRAILING_METADATA_VALUE = 'zomg it is'
+    SERVER_STATUS_CODE = _types.StatusCode.OK
+    SERVER_STATUS_DETAILS = 'our work is never over'
+    REQUEST = 'in death a member of project mayhem has a name'
+    RESPONSE = 'his name is robert paulson'
+    METHOD = 'twinkies'
+    HOST = 'hostess'
+    server_request_tag = object()
+    request_call_result = self.server.request_call(self.server_completion_queue,
+                                                   server_request_tag)
+
+    self.assertEqual(_types.CallError.OK, request_call_result)
+
+    client_call_tag = object()
+    client_call = self.client_channel.create_call(self.client_completion_queue,
+                                                  METHOD, HOST, DEADLINE)
+    client_initial_metadata = [
+        (CLIENT_METADATA_ASCII_KEY, CLIENT_METADATA_ASCII_VALUE),
+        (CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)]
+    client_start_batch_result = client_call.start_batch([
+        _types.OpArgs.send_initial_metadata(client_initial_metadata),
+        _types.OpArgs.send_message(REQUEST),
+        _types.OpArgs.send_close_from_client(),
+        _types.OpArgs.recv_initial_metadata(),
+        _types.OpArgs.recv_message(),
+        _types.OpArgs.recv_status_on_client()
+    ], client_call_tag)
+    self.assertEqual(_types.CallError.OK, client_start_batch_result)
+
+    request_event = self.server_completion_queue.next(DEADLINE)
+    self.assertEqual(_types.EventType.OP_COMPLETE, request_event.type)
+    self.assertIsInstance(request_event.call, _low.Call)
+    self.assertIs(server_request_tag, request_event.tag)
+    self.assertEqual(1, len(request_event.results))
+    self.assertEqual(dict(client_initial_metadata),
+                      dict(request_event.results[0].initial_metadata))
+    self.assertEqual(METHOD, request_event.call_details.method)
+    self.assertEqual(HOST, request_event.call_details.host)
+    self.assertLess(abs(DEADLINE - request_event.call_details.deadline),
+                    DEADLINE_TOLERANCE)
+
+    server_call_tag = object()
+    server_call = request_event.call
+    server_initial_metadata = [
+        (SERVER_INITIAL_METADATA_KEY, SERVER_INITIAL_METADATA_VALUE)]
+    server_trailing_metadata = [
+        (SERVER_TRAILING_METADATA_KEY, SERVER_TRAILING_METADATA_VALUE)]
+    server_start_batch_result = server_call.start_batch([
+        _types.OpArgs.send_initial_metadata(server_initial_metadata),
+        _types.OpArgs.recv_message(),
+        _types.OpArgs.send_message(RESPONSE),
+        _types.OpArgs.recv_close_on_server(),
+        _types.OpArgs.send_status_from_server(
+            server_trailing_metadata, SERVER_STATUS_CODE, SERVER_STATUS_DETAILS)
+    ], server_call_tag)
+    self.assertEqual(_types.CallError.OK, server_start_batch_result)
+
+    client_event = self.client_completion_queue.next(DEADLINE)
+    server_event = self.server_completion_queue.next(DEADLINE)
+
+    self.assertEqual(6, len(client_event.results))
+    found_client_op_types = set()
+    for client_result in client_event.results:
+      # we expect each op type to be unique
+      self.assertNotIn(client_result.type, found_client_op_types)
+      found_client_op_types.add(client_result.type)
+      if client_result.type == _types.OpType.RECV_INITIAL_METADATA:
+        self.assertEqual(dict(server_initial_metadata),
+                          dict(client_result.initial_metadata))
+      elif client_result.type == _types.OpType.RECV_MESSAGE:
+        self.assertEqual(RESPONSE, client_result.message)
+      elif client_result.type == _types.OpType.RECV_STATUS_ON_CLIENT:
+        self.assertEqual(dict(server_trailing_metadata),
+                          dict(client_result.trailing_metadata))
+        self.assertEqual(SERVER_STATUS_DETAILS, client_result.status.details)
+        self.assertEqual(SERVER_STATUS_CODE, client_result.status.code)
+    self.assertEqual(set([
+          _types.OpType.SEND_INITIAL_METADATA,
+          _types.OpType.SEND_MESSAGE,
+          _types.OpType.SEND_CLOSE_FROM_CLIENT,
+          _types.OpType.RECV_INITIAL_METADATA,
+          _types.OpType.RECV_MESSAGE,
+          _types.OpType.RECV_STATUS_ON_CLIENT
+      ]), found_client_op_types)
+
+    self.assertEqual(5, len(server_event.results))
+    found_server_op_types = set()
+    for server_result in server_event.results:
+      self.assertNotIn(client_result.type, found_server_op_types)
+      found_server_op_types.add(server_result.type)
+      if server_result.type == _types.OpType.RECV_MESSAGE:
+        self.assertEqual(REQUEST, server_result.message)
+      elif server_result.type == _types.OpType.RECV_CLOSE_ON_SERVER:
+        self.assertFalse(server_result.cancelled)
+    self.assertEqual(set([
+          _types.OpType.SEND_INITIAL_METADATA,
+          _types.OpType.RECV_MESSAGE,
+          _types.OpType.SEND_MESSAGE,
+          _types.OpType.RECV_CLOSE_ON_SERVER,
+          _types.OpType.SEND_STATUS_FROM_SERVER
+      ]), found_server_op_types)
+
+    del client_call
+    del server_call
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)

src/python/src/grpc/_cython/cygrpc.pyx

diff --git a/src/python/src/grpc/_cython/cygrpc.pyx b/src/python/src/grpc/_cython/cygrpc.pyx
new file mode 100644
index 0000000..dcb06f3
--- /dev/null
+++ b/src/python/src/grpc/_cython/cygrpc.pyx
@@ -0,0 +1,111 @@
+# 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.
+
+cimport cpython
+
+from grpc._cython._cygrpc cimport grpc
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport channel
+from grpc._cython._cygrpc cimport credentials
+from grpc._cython._cygrpc cimport completion_queue
+from grpc._cython._cygrpc cimport records
+from grpc._cython._cygrpc cimport server
+
+from grpc._cython._cygrpc import call
+from grpc._cython._cygrpc import channel
+from grpc._cython._cygrpc import credentials
+from grpc._cython._cygrpc import completion_queue
+from grpc._cython._cygrpc import records
+from grpc._cython._cygrpc import server
+
+StatusCode = records.StatusCode
+CallError = records.CallError
+CompletionType = records.CompletionType
+OperationType = records.OperationType
+Timespec = records.Timespec
+CallDetails = records.CallDetails
+Event = records.Event
+ByteBuffer = records.ByteBuffer
+SslPemKeyCertPair = records.SslPemKeyCertPair
+ChannelArg = records.ChannelArg
+ChannelArgs = records.ChannelArgs
+Metadatum = records.Metadatum
+Metadata = records.Metadata
+Operation = records.Operation
+
+operation_send_initial_metadata = records.operation_send_initial_metadata
+operation_send_message = records.operation_send_message
+operation_send_close_from_client = records.operation_send_close_from_client
+operation_send_status_from_server = records.operation_send_status_from_server
+operation_receive_initial_metadata = records.operation_receive_initial_metadata
+operation_receive_message = records.operation_receive_message
+operation_receive_status_on_client = records.operation_receive_status_on_client
+operation_receive_close_on_server = records.operation_receive_close_on_server
+
+Operations = records.Operations
+
+ClientCredentials = credentials.ClientCredentials
+ServerCredentials = credentials.ServerCredentials
+
+client_credentials_google_default = (
+    credentials.client_credentials_google_default)
+client_credentials_ssl = credentials.client_credentials_ssl
+client_credentials_composite_credentials = (
+    credentials.client_credentials_composite_credentials)
+client_credentials_compute_engine = (
+    credentials.client_credentials_compute_engine)
+client_credentials_jwt = credentials.client_credentials_jwt
+client_credentials_refresh_token = credentials.client_credentials_refresh_token
+client_credentials_fake_transport_security = (
+    credentials.client_credentials_fake_transport_security)
+client_credentials_iam = credentials.client_credentials_iam
+server_credentials_ssl = credentials.server_credentials_ssl
+server_credentials_fake_transport_security = (
+    credentials.server_credentials_fake_transport_security)
+
+CompletionQueue = completion_queue.CompletionQueue
+Channel = channel.Channel
+Server = server.Server
+Call = call.Call
+
+
+#
+# Global state
+#
+
+cdef class _ModuleState:
+
+  def __cinit__(self):
+    grpc.grpc_init()
+
+  def __dealloc__(self):
+    grpc.grpc_shutdown()
+
+_module_state = _ModuleState()
+

src/python/src/grpc/_cython/cygrpc_test.py

diff --git a/src/python/src/grpc/_cython/cygrpc_test.py b/src/python/src/grpc/_cython/cygrpc_test.py
new file mode 100644
index 0000000..838e1e2
--- /dev/null
+++ b/src/python/src/grpc/_cython/cygrpc_test.py
@@ -0,0 +1,276 @@
+# 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 time
+import unittest
+
+from grpc._cython import cygrpc
+from grpc._cython import test_utilities
+
+
+class TypeSmokeTest(unittest.TestCase):
+
+  def testStringsInUtilitiesUpDown(self):
+    self.assertEqual(0, cygrpc.StatusCode.ok)
+    metadatum = cygrpc.Metadatum('a', 'b')
+    self.assertEqual('a'.encode(), metadatum.key)
+    self.assertEqual('b'.encode(), metadatum.value)
+    metadata = cygrpc.Metadata([metadatum])
+    self.assertEqual(1, len(metadata))
+    self.assertEqual(metadatum.key, metadata[0].key)
+
+  def testMetadataIteration(self):
+    metadata = cygrpc.Metadata([
+        cygrpc.Metadatum('a', 'b'), cygrpc.Metadatum('c', 'd')])
+    iterator = iter(metadata)
+    metadatum = next(iterator)
+    self.assertIsInstance(metadatum, cygrpc.Metadatum)
+    self.assertEqual(metadatum.key, 'a'.encode())
+    self.assertEqual(metadatum.value, 'b'.encode())
+    metadatum = next(iterator)
+    self.assertIsInstance(metadatum, cygrpc.Metadatum)
+    self.assertEqual(metadatum.key, 'c'.encode())
+    self.assertEqual(metadatum.value, 'd'.encode())
+    with self.assertRaises(StopIteration):
+      next(iterator)
+
+  def testOperationsIteration(self):
+    operations = cygrpc.Operations([
+        cygrpc.operation_send_message('asdf')])
+    iterator = iter(operations)
+    operation = next(iterator)
+    self.assertIsInstance(operation, cygrpc.Operation)
+    # `Operation`s are write-only structures; can't directly debug anything out
+    # of them. Just check that we stop iterating.
+    with self.assertRaises(StopIteration):
+      next(iterator)
+
+  def testTimespec(self):
+    now = time.time()
+    timespec = cygrpc.Timespec(now)
+    self.assertAlmostEqual(now, float(timespec), places=8)
+
+  def testClientCredentialsUpDown(self):
+    credentials = cygrpc.client_credentials_fake_transport_security()
+    del credentials
+
+  def testServerCredentialsUpDown(self):
+    credentials = cygrpc.server_credentials_fake_transport_security()
+    del credentials
+
+  def testCompletionQueueUpDown(self):
+    completion_queue = cygrpc.CompletionQueue()
+    del completion_queue
+
+  def testServerUpDown(self):
+    server = cygrpc.Server(cygrpc.ChannelArgs([]))
+    del server
+
+  def testChannelUpDown(self):
+    channel = cygrpc.Channel('[::]:0', cygrpc.ChannelArgs([]))
+    del channel
+
+  def testSecureChannelUpDown(self):
+    channel = cygrpc.Channel(
+        '[::]:0', cygrpc.ChannelArgs([]),
+        cygrpc.client_credentials_fake_transport_security())
+    del channel
+
+  @unittest.skip('TODO(atash): undo skip after #2229 is merged')
+  def testServerStartNoExplicitShutdown(self):
+    server = cygrpc.Server()
+    completion_queue = cygrpc.CompletionQueue()
+    server.register_completion_queue(completion_queue)
+    port = server.add_http2_port('[::]:0')
+    self.assertIsInstance(port, int)
+    server.start()
+    del server
+
+  @unittest.skip('TODO(atash): undo skip after #2229 is merged')
+  def testServerStartShutdown(self):
+    completion_queue = cygrpc.CompletionQueue()
+    server = cygrpc.Server()
+    server.add_http2_port('[::]:0')
+    server.register_completion_queue(completion_queue)
+    server.start()
+    shutdown_tag = object()
+    server.shutdown(completion_queue, shutdown_tag)
+    event = completion_queue.poll()
+    self.assertEqual(cygrpc.CompletionType.operation_complete, event.type)
+    self.assertIs(shutdown_tag, event.tag)
+    del server
+    del completion_queue
+
+
+class InsecureServerInsecureClient(unittest.TestCase):
+
+  def setUp(self):
+    self.server_completion_queue = cygrpc.CompletionQueue()
+    self.server = cygrpc.Server()
+    self.server.register_completion_queue(self.server_completion_queue)
+    self.port = self.server.add_http2_port('[::]:0')
+    self.server.start()
+    self.client_completion_queue = cygrpc.CompletionQueue()
+    self.client_channel = cygrpc.Channel('localhost:{}'.format(self.port))
+
+  def tearDown(self):
+    del self.server
+    del self.client_completion_queue
+    del self.server_completion_queue
+
+  def testEcho(self):
+    DEADLINE = time.time()+5
+    DEADLINE_TOLERANCE = 0.25
+    CLIENT_METADATA_ASCII_KEY = b'key'
+    CLIENT_METADATA_ASCII_VALUE = b'val'
+    CLIENT_METADATA_BIN_KEY = b'key-bin'
+    CLIENT_METADATA_BIN_VALUE = b'\0'*1000
+    SERVER_INITIAL_METADATA_KEY = b'init_me_me_me'
+    SERVER_INITIAL_METADATA_VALUE = b'whodawha?'
+    SERVER_TRAILING_METADATA_KEY = b'California_is_in_a_drought'
+    SERVER_TRAILING_METADATA_VALUE = b'zomg it is'
+    SERVER_STATUS_CODE = cygrpc.StatusCode.ok
+    SERVER_STATUS_DETAILS = b'our work is never over'
+    REQUEST = b'in death a member of project mayhem has a name'
+    RESPONSE = b'his name is robert paulson'
+    METHOD = b'twinkies'
+    HOST = b'hostess'
+
+    cygrpc_deadline = cygrpc.Timespec(DEADLINE)
+
+    server_request_tag = object()
+    request_call_result = self.server.request_call(
+        self.server_completion_queue, self.server_completion_queue,
+        server_request_tag)
+
+    self.assertEqual(cygrpc.CallError.ok, request_call_result)
+
+    client_call_tag = object()
+    client_call = self.client_channel.create_call(self.client_completion_queue,
+                                                  METHOD, HOST, cygrpc_deadline)
+    client_initial_metadata = cygrpc.Metadata([
+        cygrpc.Metadatum(CLIENT_METADATA_ASCII_KEY,
+                         CLIENT_METADATA_ASCII_VALUE),
+        cygrpc.Metadatum(CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)])
+    client_start_batch_result = client_call.start_batch(cygrpc.Operations([
+        cygrpc.operation_send_initial_metadata(client_initial_metadata),
+        cygrpc.operation_send_message(REQUEST),
+        cygrpc.operation_send_close_from_client(),
+        cygrpc.operation_receive_initial_metadata(),
+        cygrpc.operation_receive_message(),
+        cygrpc.operation_receive_status_on_client()
+    ]), client_call_tag)
+    self.assertEqual(cygrpc.CallError.ok, client_start_batch_result)
+    client_event_future = test_utilities.CompletionQueuePollFuture(
+        self.client_completion_queue, cygrpc_deadline)
+
+    request_event = self.server_completion_queue.poll(cygrpc_deadline)
+    self.assertEqual(cygrpc.CompletionType.operation_complete,
+                      request_event.type)
+    self.assertIsInstance(request_event.operation_call, cygrpc.Call)
+    self.assertIs(server_request_tag, request_event.tag)
+    self.assertEqual(0, len(request_event.batch_operations))
+    self.assertEqual(dict(client_initial_metadata),
+                      dict(request_event.request_metadata))
+    self.assertEqual(METHOD, request_event.request_call_details.method)
+    self.assertEqual(HOST, request_event.request_call_details.host)
+    self.assertLess(
+        abs(DEADLINE - float(request_event.request_call_details.deadline)),
+        DEADLINE_TOLERANCE)
+
+    server_call_tag = object()
+    server_call = request_event.operation_call
+    server_initial_metadata = cygrpc.Metadata([
+        cygrpc.Metadatum(SERVER_INITIAL_METADATA_KEY,
+                         SERVER_INITIAL_METADATA_VALUE)])
+    server_trailing_metadata = cygrpc.Metadata([
+        cygrpc.Metadatum(SERVER_TRAILING_METADATA_KEY,
+                         SERVER_TRAILING_METADATA_VALUE)])
+    server_start_batch_result = server_call.start_batch([
+        cygrpc.operation_send_initial_metadata(server_initial_metadata),
+        cygrpc.operation_receive_message(),
+        cygrpc.operation_send_message(RESPONSE),
+        cygrpc.operation_receive_close_on_server(),
+        cygrpc.operation_send_status_from_server(
+            server_trailing_metadata, SERVER_STATUS_CODE, SERVER_STATUS_DETAILS)
+    ], server_call_tag)
+    self.assertEqual(cygrpc.CallError.ok, server_start_batch_result)
+
+    client_event = client_event_future.result()
+    server_event = self.server_completion_queue.poll(cygrpc_deadline)
+
+    self.assertEqual(6, len(client_event.batch_operations))
+    found_client_op_types = set()
+    for client_result in client_event.batch_operations:
+      # we expect each op type to be unique
+      self.assertNotIn(client_result.type, found_client_op_types)
+      found_client_op_types.add(client_result.type)
+      if client_result.type == cygrpc.OperationType.receive_initial_metadata:
+        self.assertEqual(dict(server_initial_metadata),
+                         dict(client_result.received_metadata))
+      elif client_result.type == cygrpc.OperationType.receive_message:
+        self.assertEqual(RESPONSE, client_result.received_message.bytes())
+      elif client_result.type == cygrpc.OperationType.receive_status_on_client:
+        self.assertEqual(dict(server_trailing_metadata),
+                         dict(client_result.received_metadata))
+        self.assertEqual(SERVER_STATUS_DETAILS,
+                         client_result.received_status_details)
+        self.assertEqual(SERVER_STATUS_CODE, client_result.received_status_code)
+    self.assertEqual(set([
+          cygrpc.OperationType.send_initial_metadata,
+          cygrpc.OperationType.send_message,
+          cygrpc.OperationType.send_close_from_client,
+          cygrpc.OperationType.receive_initial_metadata,
+          cygrpc.OperationType.receive_message,
+          cygrpc.OperationType.receive_status_on_client
+      ]), found_client_op_types)
+
+    self.assertEqual(5, len(server_event.batch_operations))
+    found_server_op_types = set()
+    for server_result in server_event.batch_operations:
+      self.assertNotIn(client_result.type, found_server_op_types)
+      found_server_op_types.add(server_result.type)
+      if server_result.type == cygrpc.OperationType.receive_message:
+        self.assertEqual(REQUEST, server_result.received_message.bytes())
+      elif server_result.type == cygrpc.OperationType.receive_close_on_server:
+        self.assertFalse(server_result.received_cancelled)
+    self.assertEqual(set([
+          cygrpc.OperationType.send_initial_metadata,
+          cygrpc.OperationType.receive_message,
+          cygrpc.OperationType.send_message,
+          cygrpc.OperationType.receive_close_on_server,
+          cygrpc.OperationType.send_status_from_server
+      ]), found_server_op_types)
+
+    del client_call
+    del server_call
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)

src/python/src/grpc/_cython/test_utilities.py

diff --git a/src/python/src/grpc/_cython/test_utilities.py b/src/python/src/grpc/_cython/test_utilities.py
new file mode 100644
index 0000000..21ea307
--- /dev/null
+++ b/src/python/src/grpc/_cython/test_utilities.py
@@ -0,0 +1,46 @@
+# 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 threading
+
+from grpc._cython._cygrpc import completion_queue
+
+
+class CompletionQueuePollFuture:
+
+  def __init__(self, completion_queue, deadline):
+    def poller_function():
+      self._event_result = completion_queue.poll(deadline)
+    self._event_result = None
+    self._thread = threading.Thread(target=poller_function)
+    self._thread.start()
+
+  def result(self):
+    self._thread.join()
+    return self._event_result

src/python/src/setup.py

diff --git a/src/python/src/setup.py b/src/python/src/setup.py
index 5398b09..193285a 100644
--- a/src/python/src/setup.py
+++ b/src/python/src/setup.py
@@ -29,11 +29,20 @@
 
 """A setup module for the GRPC Python package."""
 
-from distutils import core as _core
-import setuptools
+import os
 import sys
 
-_EXTENSION_SOURCES = (
+from distutils import core as _core
+from distutils import extension as _extension
+import setuptools
+
+
+# Use environment variables to determine whether or not the Cython extension
+# should *use* Cython or use the generated C files. Note that this requires the
+# C files to have been generated by building first *with* Cython support.
+_BUILD_WITH_CYTHON = os.environ.get('GRPC_PYTHON_BUILD_WITH_CYTHON', False)
+
+_C_EXTENSION_SOURCES = (
     'grpc/_adapter/_c/module.c',
     'grpc/_adapter/_c/types.c',
     'grpc/_adapter/_c/utility.c',
@@ -45,6 +54,19 @@
     'grpc/_adapter/_c/types/server.c',
 )
 
+_CYTHON_EXTENSION_PACKAGE_NAMES = (
+)
+
+_CYTHON_EXTENSION_MODULE_NAMES = (
+    'grpc._cython.cygrpc',
+    'grpc._cython._cygrpc.call',
+    'grpc._cython._cygrpc.channel',
+    'grpc._cython._cygrpc.completion_queue',
+    'grpc._cython._cygrpc.credentials',
+    'grpc._cython._cygrpc.records',
+    'grpc._cython._cygrpc.server',
+)
+
 _EXTENSION_INCLUDE_DIRECTORIES = (
     '.',
 )
@@ -56,15 +78,50 @@
 if not "darwin" in sys.platform:
     _EXTENSION_LIBRARIES += ('rt',)
 
-_EXTENSION_MODULE = _core.Extension(
-    'grpc._adapter._c', sources=list(_EXTENSION_SOURCES),
+
+_C_EXTENSION_MODULE = _core.Extension(
+    'grpc._adapter._c', sources=list(_C_EXTENSION_SOURCES),
     include_dirs=list(_EXTENSION_INCLUDE_DIRECTORIES),
     libraries=list(_EXTENSION_LIBRARIES),
-    )
+)
+_C_EXTENSION_MODULES = [_C_EXTENSION_MODULE]
+
+
+def cython_extensions(package_names, module_names, include_dirs, libraries,
+                      build_with_cython=False):
+  file_extension = 'pyx' if build_with_cython else 'c'
+  module_files = [name.replace('.', '/') + '.' + file_extension
+                  for name in module_names]
+  extensions = [
+      _extension.Extension(
+          name=module_name, sources=[module_file],
+          include_dirs=include_dirs, libraries=libraries
+      ) for (module_name, module_file) in zip(module_names, module_files)
+  ]
+  if build_with_cython:
+    import Cython.Build
+    return Cython.Build.cythonize(extensions)
+  else:
+    return extensions
+
+_CYTHON_EXTENSION_MODULES = cython_extensions(
+    list(_CYTHON_EXTENSION_PACKAGE_NAMES), list(_CYTHON_EXTENSION_MODULE_NAMES),
+    list(_EXTENSION_INCLUDE_DIRECTORIES), list(_EXTENSION_LIBRARIES),
+    bool(_BUILD_WITH_CYTHON))
+
+# TODO(atash): We shouldn't need to gate any C code based on the python version
+# from the distutils build system. Remove this hackery once we're on Cython and
+# 3.x C API compliant.
+_EXTENSION_MODULES = list(_CYTHON_EXTENSION_MODULES)
+if sys.version_info[0:2] <= (2, 7):
+  _EXTENSION_MODULES += _C_EXTENSION_MODULES
+
 
 _PACKAGES = (
     'grpc',
     'grpc._adapter',
+    'grpc._cython',
+    'grpc._cython._cygrpc',
     'grpc._junkdrawer',
     'grpc.early_adopter',
     'grpc.framework',
@@ -79,6 +136,7 @@
 _PACKAGE_DIRECTORIES = {
     'grpc': 'grpc',
     'grpc._adapter': 'grpc/_adapter',
+    'grpc._cython': 'grpc/_cython',
     'grpc._junkdrawer': 'grpc/_junkdrawer',
     'grpc.early_adopter': 'grpc/early_adopter',
     'grpc.framework': 'grpc/framework',
@@ -87,7 +145,7 @@
 setuptools.setup(
     name='grpcio',
     version='0.9.0a1',
-    ext_modules=[_EXTENSION_MODULE],
+    ext_modules=_EXTENSION_MODULES,
     packages=list(_PACKAGES),
     package_dir=_PACKAGE_DIRECTORIES,
     install_requires=[

src/ruby/ext/grpc/extconf.rb

diff --git a/src/ruby/ext/grpc/extconf.rb b/src/ruby/ext/grpc/extconf.rb
index 6dd0234..7972272 100644
--- a/src/ruby/ext/grpc/extconf.rb
+++ b/src/ruby/ext/grpc/extconf.rb
@@ -54,44 +54,55 @@
   LIBDIR
 ]
 
-# Check to see if GRPC_ROOT is defined or available
-grpc_root = ENV['GRPC_ROOT']
-if grpc_root.nil?
-  r = File.expand_path(File.join(File.dirname(__FILE__), '../../../..'))
-  grpc_root = r if File.exist?(File.join(r, 'include/grpc/grpc.h'))
-end
-
-# When grpc_root is available attempt to build the grpc core.
-unless grpc_root.nil?
-  grpc_config = ENV['GRPC_CONFIG'] || 'opt'
-  if ENV.key?('GRPC_LIB_DIR')
-    grpc_lib_dir = File.join(grpc_root, ENV['GRPC_LIB_DIR'])
-  else
-    grpc_lib_dir = File.join(File.join(grpc_root, 'libs'), grpc_config)
+def check_grpc_root
+  grpc_root = ENV['GRPC_ROOT']
+  if grpc_root.nil?
+    r = File.expand_path(File.join(File.dirname(__FILE__), '../../../..'))
+    grpc_root = r if File.exist?(File.join(r, 'include/grpc/grpc.h'))
   end
-  unless File.exist?(File.join(grpc_lib_dir, 'libgrpc.a'))
-    system("make -C #{grpc_root} static_c CONFIG=#{grpc_config}")
+  grpc_root
+end
+
+grpc_pkg_config = system('pkg-config --exists grpc')
+
+if grpc_pkg_config
+  $CFLAGS << ' ' + `pkg-config --static --cflags grpc`.strip + ' '
+  $LDFLAGS << ' ' + `pkg-config --static --libs grpc`.strip + ' '
+else
+  dir_config('grpc', HEADER_DIRS, LIB_DIRS)
+  fail 'libdl not found' unless have_library('dl', 'dlopen')
+  fail 'zlib not found' unless have_library('z', 'inflate')
+  begin
+    fail 'Fail' unless have_library('gpr', 'gpr_now')
+    fail 'Fail' unless have_library('grpc', 'grpc_channel_destroy')
+  rescue
+    # Check to see if GRPC_ROOT is defined or available
+    grpc_root = check_grpc_root
+
+    # Stop if there is still no grpc_root
+    exit 1 if grpc_root.nil?
+
+    grpc_config = ENV['GRPC_CONFIG'] || 'opt'
+    if ENV.key?('GRPC_LIB_DIR')
+      grpc_lib_dir = File.join(grpc_root, ENV['GRPC_LIB_DIR'])
+    else
+      grpc_lib_dir = File.join(File.join(grpc_root, 'libs'), grpc_config)
+    end
+    unless File.exist?(File.join(grpc_lib_dir, 'libgrpc.a'))
+      print "Building internal gRPC\n"
+      system("make -C #{grpc_root} static_c CONFIG=#{grpc_config}")
+    end
+    $CFLAGS << ' -I' + File.join(grpc_root, 'include')
+    $LDFLAGS << ' -L' + grpc_lib_dir
+    raise 'gpr not found' unless have_library('gpr', 'gpr_now')
+    raise 'grpc not found' unless have_library('grpc', 'grpc_channel_destroy')
   end
-  HEADER_DIRS.unshift File.join(grpc_root, 'include')
-  LIB_DIRS.unshift grpc_lib_dir
 end
 
-def crash(msg)
-  print(" extconf failure: #{msg}\n")
-  exit 1
-end
-
-dir_config('grpc', HEADER_DIRS, LIB_DIRS)
-
-$CFLAGS << ' -Wno-implicit-function-declaration '
-$CFLAGS << ' -Wno-pointer-sign '
-$CFLAGS << ' -Wno-return-type '
+$CFLAGS << ' -std=c99 '
 $CFLAGS << ' -Wall '
+$CFLAGS << ' -Wextra '
 $CFLAGS << ' -pedantic '
+$CFLAGS << ' -Werror '
 
-$LDFLAGS << ' -lgrpc -lgpr -lz -ldl'
-
-crash('need grpc lib') unless have_library('grpc', 'grpc_channel_destroy')
-have_library('grpc', 'grpc_channel_destroy')
-crash('need gpr lib') unless have_library('gpr', 'gpr_now')
 create_makefile('grpc/grpc')

src/ruby/ext/grpc/rb_server.c

diff --git a/src/ruby/ext/grpc/rb_server.c b/src/ruby/ext/grpc/rb_server.c
index 9c0d24b..bed3b26 100644
--- a/src/ruby/ext/grpc/rb_server.c
+++ b/src/ruby/ext/grpc/rb_server.c
@@ -68,8 +68,12 @@
 
   /* Deletes the wrapped object if the mark object is Qnil, which indicates
      that no other object is the actual owner. */
+  /* grpc_server_shutdown does not exist. Change this to something that does
+     or delete it */
   if (svr->wrapped != NULL && svr->mark == Qnil) {
-    grpc_server_shutdown(svr->wrapped);
+    // grpc_server_shutdown(svr->wrapped);
+    // Aborting to indicate a bug
+    abort();
     grpc_server_destroy(svr->wrapped);
   }
 

src/ruby/lib/grpc/version.rb

diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index 028fea5..431e877 100644
--- a/src/ruby/lib/grpc/version.rb
+++ b/src/ruby/lib/grpc/version.rb
@@ -29,5 +29,5 @@
 
 # GRPC contains the General RPC module.
 module GRPC
-  VERSION = '0.9.4'
+  VERSION = '0.10.0'
 end

templates/Makefile.template

diff --git a/templates/Makefile.template b/templates/Makefile.template
index f0cd0d9..84822ab 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -229,6 +229,7 @@
 endif
 INSTALL = install
 RM = rm -f
+PKG_CONFIG = pkg-config
 
 ifndef VALID_CONFIG_$(CONFIG)
 $(error Invalid CONFIG value '$(CONFIG)')
@@ -345,7 +346,7 @@
 # These are automatically computed variables.
 # There shouldn't be any need to change anything from now on.
 
-HAS_PKG_CONFIG = $(shell command -v pkg-config >/dev/null 2>&1 && echo true || echo false)
+HAS_PKG_CONFIG = $(shell command -v $(PKG_CONFIG) >/dev/null 2>&1 && echo true || echo false)
 
 PC_TEMPLATE = prefix=$(prefix)\n\
 exec_prefix=${'\$${prefix}'}\n\
@@ -357,7 +358,7 @@
 Version: $(VERSION)\n\
 Cflags: -I${'\$${includedir}'} $(PC_CFLAGS)\n\
 Requires.private: $(PC_REQUIRES_PRIVATE)\n\
-Libs: -L${'\$${libdir}'}\n\
+Libs: -L${'\$${libdir}'} $(PC_LIB)\n\
 Libs.private: $(PC_LIBS_PRIVATE)
 
 # gpr .pc file
@@ -366,7 +367,8 @@
 PC_CFLAGS = -pthread
 PC_REQUIRES_PRIVATE =
 PC_LIBS_PRIVATE = -lpthread
-ifeq ($(SYSTEM),Darwin)
+PC_LIB = -lgpr
+ifneq ($(SYSTEM),Darwin)
 PC_LIBS_PRIVATE += -lrt
 endif
 GPR_PC_FILE := $(PC_TEMPLATE)
@@ -396,10 +398,10 @@
 endif
 
 ifeq ($(HAS_PKG_CONFIG),true)
-OPENSSL_ALPN_CHECK_CMD = pkg-config --atleast-version=1.0.2 openssl
-ZLIB_CHECK_CMD = pkg-config --exists zlib
-PERFTOOLS_CHECK_CMD = pkg-config --exists profiler
-PROTOBUF_CHECK_CMD = pkg-config --atleast-version=3.0.0-alpha-3 protobuf
+OPENSSL_ALPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.2 openssl
+OPENSSL_NPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.1 openssl
+ZLIB_CHECK_CMD = $(PKG_CONFIG) --exists zlib
+PROTOBUF_CHECK_CMD = $(PKG_CONFIG) --atleast-version=3.0.0-alpha-3 protobuf
 else # HAS_PKG_CONFIG
 
 ifeq ($(SYSTEM),MINGW32)
@@ -409,16 +411,19 @@
 endif
 
 OPENSSL_ALPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/openssl-alpn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
+OPENSSL_NPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/openssl-npn.c $(addprefix -l, $(OPENSSL_LIBS)) $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/zlib.c -lz $(LDFLAGS)
-PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/perftools.c -lprofiler $(LDFLAGS)
 PROTOBUF_CHECK_CMD = $(CXX) $(CXXFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/protobuf.cc -lprotobuf $(LDFLAGS)
 
 ifeq ($(OPENSSL_REQUIRES_DL),true)
 OPENSSL_ALPN_CHECK_CMD += -ldl
+OPENSSL_NPN_CHECK_CMD += -ldl
 endif
 
 endif # HAS_PKG_CONFIG
 
+PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o $(TMPOUT) test/build/perftools.c -lprofiler $(LDFLAGS)
+
 PROTOC_CHECK_CMD = which protoc > /dev/null
 PROTOC_CHECK_VERSION_CMD = protoc --version | grep -q libprotoc.3
 DTRACE_CHECK_CMD = which dtrace > /dev/null
@@ -435,11 +440,17 @@
 HAS_SYSTEM_PROTOBUF_VERIFY = $(shell $(PROTOBUF_CHECK_CMD) 2> /dev/null && echo true || echo false)
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN = $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_SYSTEM_OPENSSL_ALPN),true)
+HAS_SYSTEM_OPENSSL_NPN = true
+else
+HAS_SYSTEM_OPENSSL_NPN = $(shell $(OPENSSL_NPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
+endif
 HAS_SYSTEM_ZLIB = $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
 HAS_SYSTEM_PROTOBUF = $(HAS_SYSTEM_PROTOBUF_VERIFY)
 else
 # override system libraries if the config requires a custom compiled library
 HAS_SYSTEM_OPENSSL_ALPN = false
+HAS_SYSTEM_OPENSSL_NPN = false
 HAS_SYSTEM_ZLIB = false
 HAS_SYSTEM_PROTOBUF = false
 endif
@@ -463,6 +474,9 @@
 endif
 endif
 
+# Note that for testing purposes, one can do:
+#   make HAS_EMBEDDED_OPENSSL_ALPN=false
+# to emulate the fact we do not have OpenSSL in the third_party folder.
 ifeq ($(wildcard third_party/openssl/ssl/ssl.h),)
 HAS_EMBEDDED_OPENSSL_ALPN = false
 else
@@ -497,8 +511,8 @@
 endif
 else
 ifeq ($(HAS_PKG_CONFIG),true)
-CPPFLAGS += $(shell pkg-config --cflags zlib)
-LDFLAGS += $(shell pkg-config --libs-only-L zlib)
+CPPFLAGS += $(shell $(PKG_CONFIG) --cflags zlib)
+LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L zlib)
 PC_REQUIRES_GRPC += zlib
 else
 PC_LIBS_GRPC += -lz
@@ -514,11 +528,11 @@
 ifeq ($(HAS_PKG_CONFIG),true)
 OPENSSL_PKG_CONFIG = true
 PC_REQUIRES_SECURE = openssl
-CPPFLAGS := $(shell pkg-config --cflags openssl) $(CPPFLAGS)
-LDFLAGS_OPENSSL_PKG_CONFIG = $(shell pkg-config --libs-only-L openssl)
+CPPFLAGS := $(shell $(PKG_CONFIG) --cflags openssl) $(CPPFLAGS)
+LDFLAGS_OPENSSL_PKG_CONFIG = $(shell $(PKG_CONFIG) --libs-only-L openssl)
 ifeq ($(SYSTEM),Linux)
 ifneq ($(LDFLAGS_OPENSSL_PKG_CONFIG),)
-LDFLAGS_OPENSSL_PKG_CONFIG += $(shell pkg-config --libs-only-L openssl | sed s/L/Wl,-rpath,/)
+LDFLAGS_OPENSSL_PKG_CONFIG += $(shell $(PKG_CONFIG) --libs-only-L openssl | sed s/L/Wl,-rpath,/)
 endif
 endif
 LDFLAGS := $(LDFLAGS_OPENSSL_PKG_CONFIG) $(LDFLAGS)
@@ -531,6 +545,7 @@
 endif
 else
 ifeq ($(HAS_EMBEDDED_OPENSSL_ALPN),true)
+USE_SYSTEM_OPENSSL = false
 OPENSSL_DEP = $(LIBDIR)/$(CONFIG)/openssl/libssl.a
 OPENSSL_MERGE_LIBS += $(LIBDIR)/$(CONFIG)/openssl/libssl.a $(LIBDIR)/$(CONFIG)/openssl/libcrypto.a
 # need to prefix these to ensure overriding system libraries
@@ -540,12 +555,21 @@
 LIBS_SECURE = dl
 endif
 else
+ifeq ($(HAS_SYSTEM_OPENSSL_NPN),true)
+USE_SYSTEM_OPENSSL = true
+CPPFLAGS += -DTSI_OPENSSL_ALPN_SUPPORT=0
+LIBS_SECURE = $(OPENSSL_LIBS)
+ifeq ($(OPENSSL_REQUIRES_DL),true)
+LIBS_SECURE += dl
+endif
+else
 NO_SECURE = true
 endif
 endif
+endif
 
 ifeq ($(OPENSSL_PKG_CONFIG),true)
-LDLIBS_SECURE += $(shell pkg-config --libs-only-l openssl)
+LDLIBS_SECURE += $(shell $(PKG_CONFIG) --libs-only-l openssl)
 else
 LDLIBS_SECURE += $(addprefix -l, $(LIBS_SECURE))
 endif
@@ -556,6 +580,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = $(PC_REQUIRES_GRPC) $(PC_REQUIRES_SECURE)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPC) $(PC_LIBS_SECURE)
+PC_LIB = -lgrpc
 GRPC_PC_FILE := $(PC_TEMPLATE)
 
 # gprc_unsecure .pc file
@@ -564,6 +589,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = $(PC_REQUIRES_GRPC)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPC)
+PC_LIB = -lgrpc
 GRPC_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
 PROTOBUF_PKG_CONFIG = false
@@ -575,11 +601,11 @@
 ifeq ($(HAS_PKG_CONFIG),true)
 PROTOBUF_PKG_CONFIG = true
 PC_REQUIRES_GRPCXX = protobuf
-CPPFLAGS := $(shell pkg-config --cflags protobuf) $(CPPFLAGS)
-LDFLAGS_PROTOBUF_PKG_CONFIG = $(shell pkg-config --libs-only-L protobuf)
+CPPFLAGS := $(shell $(PKG_CONFIG) --cflags protobuf) $(CPPFLAGS)
+LDFLAGS_PROTOBUF_PKG_CONFIG = $(shell $(PKG_CONFIG) --libs-only-L protobuf)
 ifeq ($(SYSTEM),Linux)
 ifneq ($(LDFLAGS_PROTOBUF_PKG_CONFIG),)
-LDFLAGS_PROTOBUF_PKG_CONFIG += $(shell pkg-config --libs-only-L protobuf | sed s/L/Wl,-rpath,/)
+LDFLAGS_PROTOBUF_PKG_CONFIG += $(shell $(PKG_CONFIG) --libs-only-L protobuf | sed s/L/Wl,-rpath,/)
 endif
 endif
 else
@@ -602,7 +628,7 @@
 HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
 
 ifeq ($(PROTOBUF_PKG_CONFIG),true)
-LDLIBS_PROTOBUF += $(shell pkg-config --libs-only-l protobuf)
+LDLIBS_PROTOBUF += $(shell $(PKG_CONFIG) --libs-only-l protobuf)
 else
 LDLIBS_PROTOBUF += $(addprefix -l, $(LIBS_PROTOBUF))
 endif
@@ -613,6 +639,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = grpc $(PC_REQUIRES_GRPCXX)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPCXX)
+PC_LIB = -lgrpc++
 GRPCXX_PC_FILE := $(PC_TEMPLATE)
 
 # grpc++_unsecure .pc file
@@ -621,6 +648,7 @@
 PC_CFLAGS =
 PC_REQUIRES_PRIVATE = grpc_unsecure $(PC_REQUIRES_GRPCXX)
 PC_LIBS_PRIVATE = $(PC_LIBS_GRPCXX)
+PC_LIB = -lgrpc++
 GRPCXX_UNSECURE_PC_FILE := $(PC_TEMPLATE)
 
 ifeq ($(MAKECMDGOALS),clean)
@@ -693,7 +721,7 @@
 	@echo
 	@echo "DEPENDENCY ERROR"
 	@echo
-	@echo "The target you are trying to run requires OpenSSL with ALPN support."
+	@echo "The target you are trying to run requires OpenSSL."
 	@echo "Your system doesn't have it, and neither does the third_party directory."
 	@echo
 	@echo "Please consult INSTALL to get more information."
@@ -751,6 +779,7 @@
 
 run_dep_checks:
 	$(OPENSSL_ALPN_CHECK_CMD) || true
+	$(OPENSSL_NPN_CHECK_CMD) || true
 	$(ZLIB_CHECK_CMD) || true
 	$(PERFTOOLS_CHECK_CMD) || true
 	$(PROTOBUF_CHECK_CMD) || true
@@ -771,7 +800,7 @@
 else
 ifeq ($(SYSTEM),MINGW32)
 	@echo "We currently don't have a good way to compile OpenSSL in-place under msys."
-	@echo "Please provide an ALPN-capable OpenSSL in your mingw32 system."
+	@echo "Please provide a OpenSSL in your mingw32 system."
 	@echo
 	@echo "Note that you can find a compatible version of the libraries here:"
 	@echo
@@ -1299,11 +1328,11 @@
 
 LIB${lib.name.upper()}_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIB${lib.name.upper()}_SRC))))
 
-## If the library requires OpenSSL with ALPN, let's add some restrictions.
+## If the library requires OpenSSL, let's add some restrictions.
 % if lib.get('secure', 'check') == 'yes' or lib.get('secure', 'check') == 'check':
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure libraries if you don't have OpenSSL with ALPN.
+# You can't build secure libraries if you don't have OpenSSL.
 
 $(LIBDIR)/$(CONFIG)/lib${lib.name}.a: openssl_dep_error
 
@@ -1443,7 +1472,7 @@
 % endif
 % if lib.get('secure', 'check') == 'yes' or lib.get('secure', 'check') == 'check':
 ## If the lib was secure, we have to close the Makefile's if that tested
-## the presence of an ALPN-capable OpenSSL.
+## the presence of OpenSSL.
 
 endif
 % endif
@@ -1484,7 +1513,7 @@
 % if tgt.get('secure', 'check') == 'yes' or tgt.get('secure', 'check') == 'check':
 ifeq ($(NO_SECURE),true)
 
-# You can't build secure targets if you don't have OpenSSL with ALPN.
+# You can't build secure targets if you don't have OpenSSL.
 
 $(BINDIR)/$(CONFIG)/${tgt.name}: openssl_dep_error
 

test/build/openssl-npn.c

diff --git a/test/build/openssl-npn.c b/test/build/openssl-npn.c
new file mode 100644
index 0000000..90ae8ef
--- /dev/null
+++ b/test/build/openssl-npn.c
@@ -0,0 +1,45 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+/* This is just a compilation test, to see if we have a version of OpenSSL with
+   NPN support installed. It's not meant to be run, and all of the values and
+   function calls there are non-sensical. The code is only meant to test the
+   presence of symbols, and we're expecting a compilation failure otherwise. */
+
+#include <stdlib.h>
+#include <openssl/ssl.h>
+
+int main() {
+  SSL_get0_next_proto_negotiated(NULL, NULL, NULL);
+  return OPENSSL_NPN_UNSUPPORTED;
+}

test/core/bad_client/bad_client.c

diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index 8ce666d..b050227 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -86,8 +86,8 @@
   gpr_slice slice =
       gpr_slice_from_copied_buffer(client_payload, client_payload_length);
 
-  hex =
-      gpr_hexdump(client_payload, client_payload_length, GPR_HEXDUMP_PLAINTEXT);
+  hex = gpr_dump(client_payload, client_payload_length,
+                 GPR_DUMP_HEX | GPR_DUMP_ASCII);
 
   /* Add a debug log */
   gpr_log(GPR_INFO, "TEST: %s", hex);

test/core/end2end/tests/request_response_with_payload_and_call_creds.c

diff --git a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
index 665ad3d..b5c743b 100644
--- a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
+++ b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
@@ -173,7 +173,7 @@
   size_t details_capacity = 0;
   int was_cancelled = 2;
   grpc_credentials *creds = NULL;
-  const grpc_auth_context *s_auth_context = NULL;
+  grpc_auth_context *s_auth_context = NULL;
 
   c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
                                deadline);
@@ -239,6 +239,7 @@
   s_auth_context = grpc_call_auth_context(s);
   GPR_ASSERT(s_auth_context != NULL);
   print_auth_context(0, s_auth_context);
+  grpc_auth_context_release(s_auth_context);
 
   /* Cannot set creds on the server call object. */
   GPR_ASSERT(grpc_call_set_credentials(s, NULL) != GRPC_CALL_OK);

test/core/security/auth_context_test.c

diff --git a/test/core/security/auth_context_test.c b/test/core/security/auth_context_test.c
index 2b12551..a30505a 100644
--- a/test/core/security/auth_context_test.c
+++ b/test/core/security/auth_context_test.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include<string.h>
+#include <string.h>
 
 #include "src/core/security/security_context.h"
 #include "src/core/support/string.h"

test/core/security/credentials_test.c

diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index 3a7b3ce..d3fea96 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -336,6 +336,27 @@
                                         check_iam_metadata, creds);
 }
 
+static void check_access_token_metadata(void *user_data,
+                                        grpc_credentials_md *md_elems,
+                                        size_t num_md,
+                                        grpc_credentials_status status) {
+  grpc_credentials *c = (grpc_credentials *)user_data;
+  expected_md emd[] = {{GRPC_AUTHORIZATION_METADATA_KEY, "Bearer blah"}};
+  GPR_ASSERT(status == GRPC_CREDENTIALS_OK);
+  GPR_ASSERT(num_md == 1);
+  check_metadata(emd, md_elems, num_md);
+  grpc_credentials_unref(c);
+}
+
+static void test_access_token_creds(void) {
+  grpc_credentials *creds = grpc_access_token_credentials_create("blah");
+  GPR_ASSERT(grpc_credentials_has_request_metadata(creds));
+  GPR_ASSERT(grpc_credentials_has_request_metadata_only(creds));
+  GPR_ASSERT(strcmp(creds->type, GRPC_CREDENTIALS_TYPE_OAUTH2) == 0);
+  grpc_credentials_get_request_metadata(creds, NULL, test_service_url,
+                                        check_access_token_metadata, creds);
+}
+
 static void check_ssl_oauth2_composite_metadata(
     void *user_data, grpc_credentials_md *md_elems, size_t num_md,
     grpc_credentials_status status) {
@@ -930,6 +951,7 @@
   test_oauth2_token_fetcher_creds_parsing_missing_token_type();
   test_oauth2_token_fetcher_creds_parsing_missing_token_lifetime();
   test_iam_creds();
+  test_access_token_creds();
   test_ssl_oauth2_composite_creds();
   test_ssl_oauth2_iam_composite_creds();
   test_compute_engine_creds_success();

test/core/security/jwt_verifier_test.c

diff --git a/test/core/security/jwt_verifier_test.c b/test/core/security/jwt_verifier_test.c
new file mode 100644
index 0000000..46b96d9
--- /dev/null
+++ b/test/core/security/jwt_verifier_test.c
@@ -0,0 +1,565 @@
+/*
+ *
+ * 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 "src/core/security/jwt_verifier.h"
+
+#include <string.h>
+
+#include "src/core/httpcli/httpcli.h"
+#include "src/core/security/base64.h"
+#include "src/core/security/json_token.h"
+#include "test/core/util/test_config.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/slice.h>
+#include <grpc/support/string_util.h>
+
+/* This JSON key was generated with the GCE console and revoked immediately.
+   The identifiers have been changed as well.
+   Maximum size for a string literal is 509 chars in C89, yay!  */
+static const char json_key_str_part1[] =
+    "{ \"private_key\": \"-----BEGIN PRIVATE KEY-----"
+    "\\nMIICeAIBADANBgkqhkiG9w0BAQEFAASCAmIwggJeAgEAAoGBAOEvJsnoHnyHkXcp\\n7mJE"
+    "qg"
+    "WGjiw71NfXByguekSKho65FxaGbsnSM9SMQAqVk7Q2rG+I0OpsT0LrWQtZ\\nyjSeg/"
+    "rWBQvS4hle4LfijkP3J5BG+"
+    "IXDMP8RfziNRQsenAXDNPkY4kJCvKux2xdD\\nOnVF6N7dL3nTYZg+"
+    "uQrNsMTz9UxVAgMBAAECgYEAzbLewe1xe9vy+2GoSsfib+28\\nDZgSE6Bu/"
+    "zuFoPrRc6qL9p2SsnV7txrunTyJkkOnPLND9ABAXybRTlcVKP/sGgza\\n/"
+    "8HpCqFYM9V8f34SBWfD4fRFT+n/"
+    "73cfRUtGXdXpseva2lh8RilIQfPhNZAncenU\\ngqXjDvpkypEusgXAykECQQD+";
+static const char json_key_str_part2[] =
+    "53XxNVnxBHsYb+AYEfklR96yVi8HywjVHP34+OQZ\\nCslxoHQM8s+"
+    "dBnjfScLu22JqkPv04xyxmt0QAKm9+vTdAkEA4ib7YvEAn2jXzcCI\\nEkoy2L/"
+    "XydR1GCHoacdfdAwiL2npOdnbvi4ZmdYRPY1LSTO058tQHKVXV7NLeCa3\\nAARh2QJBAMKeDA"
+    "G"
+    "W303SQv2cZTdbeaLKJbB5drz3eo3j7dDKjrTD9JupixFbzcGw\\n8FZi5c8idxiwC36kbAL6Hz"
+    "A"
+    "ZoX+ofI0CQE6KCzPJTtYNqyShgKAZdJ8hwOcvCZtf\\n6z8RJm0+"
+    "6YBd38lfh5j8mZd7aHFf6I17j5AQY7oPEc47TjJj/"
+    "5nZ68ECQQDvYuI3\\nLyK5fS8g0SYbmPOL9TlcHDOqwG0mrX9qpg5DC2fniXNSrrZ64GTDKdzZ"
+    "Y"
+    "Ap6LI9W\\nIqv4vr6y38N79TTC\\n-----END PRIVATE KEY-----\\n\", ";
+static const char json_key_str_part3_for_google_email_issuer[] =
+    "\"private_key_id\": \"e6b5137873db8d2ef81e06a47289e6434ec8a165\", "
+    "\"client_email\": "
+    "\"777-abaslkan11hlb6nmim3bpspl31ud@developer.gserviceaccount."
+    "com\", \"client_id\": "
+    "\"777-abaslkan11hlb6nmim3bpspl31ud.apps.googleusercontent."
+    "com\", \"type\": \"service_account\" }";
+/* Trick our JWT library into issuing a JWT with iss=accounts.google.com. */
+static const char json_key_str_part3_for_url_issuer[] =
+    "\"private_key_id\": \"e6b5137873db8d2ef81e06a47289e6434ec8a165\", "
+    "\"client_email\": \"accounts.google.com\", "
+    "\"client_id\": "
+    "\"777-abaslkan11hlb6nmim3bpspl31ud.apps.googleusercontent."
+    "com\", \"type\": \"service_account\" }";
+static const char json_key_str_part3_for_custom_email_issuer[] =
+    "\"private_key_id\": \"e6b5137873db8d2ef81e06a47289e6434ec8a165\", "
+    "\"client_email\": "
+    "\"foo@bar.com\", \"client_id\": "
+    "\"777-abaslkan11hlb6nmim3bpspl31ud.apps.googleusercontent."
+    "com\", \"type\": \"service_account\" }";
+
+static grpc_jwt_verifier_email_domain_key_url_mapping custom_mapping = {
+  "bar.com", "keys.bar.com/jwk"
+};
+
+static const char expected_user_data[] = "user data";
+
+static const char good_jwk_set[] =
+    "{"
+    " \"keys\": ["
+    "  {"
+    "   \"kty\": \"RSA\","
+    "   \"alg\": \"RS256\","
+    "   \"use\": \"sig\","
+    "   \"kid\": \"e6b5137873db8d2ef81e06a47289e6434ec8a165\","
+    "   \"n\": "
+    "\"4S8myegefIeRdynuYkSqBYaOLDvU19cHKC56RIqGjrkXFoZuydIz1IxACpWTtDasb4jQ6mxP"
+    "QutZC1nKNJ6D-tYFC9LiGV7gt-KOQ_cnkEb4hcMw_xF_OI1FCx6cBcM0-"
+    "RjiQkK8q7HbF0M6dUXo3t0vedNhmD65Cs2wxPP1TFU=\","
+    "   \"e\": \"AQAB\""
+    "  }"
+    " ]"
+    "}";
+
+static gpr_timespec expected_lifetime = {3600, 0};
+
+static const char good_google_email_keys_part1[] =
+    "{\"e6b5137873db8d2ef81e06a47289e6434ec8a165\": \"-----BEGIN "
+    "CERTIFICATE-----"
+    "\\nMIICATCCAWoCCQDEywLhxvHjnDANBgkqhkiG9w0BAQsFADBFMQswCQYDVQQGEwJB\\nVTET"
+    "MBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0\\ncyBQdHkgTHR"
+    "kMB4XDTE1MDYyOTA4Mzk1MFoXDTI1MDYyNjA4Mzk1MFowRTELMAkG\\nA1UEBhMCQVUxEzARBg"
+    "NVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoMGEludGVybmV0\\nIFdpZGdpdHMgUHR5IEx0ZDCBn"
+    "zANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEA4S8m\\nyegefIeRdynuYkSqBYaOLDvU19cHKC56"
+    "RIqGjrkXFoZuydIz1IxACpWTtDasb4jQ\\n6mxPQutZC1nKNJ6D+tYFC9LiGV7gt+KOQ/";
+
+static const char good_google_email_keys_part2[] =
+    "cnkEb4hcMw/xF/OI1FCx6cBcM0+"
+    "Rji\\nQkK8q7HbF0M6dUXo3t0vedNhmD65Cs2wxPP1TFUCAwEAATANBgkqhkiG9w0BAQsF\\nA"
+    "AOBgQBfu69FkPmBknbKNFgurPz78kbs3VNN+k/"
+    "PUgO5DHKskJmgK2TbtvX2VMpx\\nkftmHGzgzMzUlOtigCaGMgHWjfqjpP9uuDbahXrZBJzB8c"
+    "Oq7MrQF8r17qVvo3Ue\\nPjTKQMAsU8uxTEMmeuz9L6yExs0rfd6bPOrQkAoVfFfiYB3/"
+    "pA==\\n-----END CERTIFICATE-----\\n\"}";
+
+static const char expected_audience[] = "https://foo.com";
+
+static const char good_openid_config[] =
+    "{"
+    " \"issuer\": \"https://accounts.google.com\","
+    " \"authorization_endpoint\": "
+    "\"https://accounts.google.com/o/oauth2/v2/auth\","
+    " \"token_endpoint\": \"https://www.googleapis.com/oauth2/v4/token\","
+    " \"userinfo_endpoint\": \"https://www.googleapis.com/oauth2/v3/userinfo\","
+    " \"revocation_endpoint\": \"https://accounts.google.com/o/oauth2/revoke\","
+    " \"jwks_uri\": \"https://www.googleapis.com/oauth2/v3/certs\""
+    "}";
+
+static const char expired_claims[] =
+    "{ \"aud\": \"https://foo.com\","
+    "  \"iss\": \"blah.foo.com\","
+    "  \"sub\": \"juju@blah.foo.com\","
+    "  \"jti\": \"jwtuniqueid\","
+    "  \"iat\": 100,"  /* Way back in the past... */
+    "  \"exp\": 120,"
+    "  \"nbf\": 60,"
+    "  \"foo\": \"bar\"}";
+
+static const char claims_without_time_constraint[] =
+    "{ \"aud\": \"https://foo.com\","
+    "  \"iss\": \"blah.foo.com\","
+    "  \"sub\": \"juju@blah.foo.com\","
+    "  \"jti\": \"jwtuniqueid\","
+    "  \"foo\": \"bar\"}";
+
+static const char invalid_claims[] =
+    "{ \"aud\": \"https://foo.com\","
+    "  \"iss\": 46," /* Issuer cannot be a number. */
+    "  \"sub\": \"juju@blah.foo.com\","
+    "  \"jti\": \"jwtuniqueid\","
+    "  \"foo\": \"bar\"}";
+
+typedef struct {
+  grpc_jwt_verifier_status expected_status;
+  const char *expected_issuer;
+  const char *expected_subject;
+} verifier_test_config;
+
+static void test_claims_success(void) {
+  grpc_jwt_claims *claims;
+  gpr_slice s = gpr_slice_from_copied_string(claims_without_time_constraint);
+  grpc_json *json = grpc_json_parse_string_with_len(
+      (char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s));
+  GPR_ASSERT(json != NULL);
+  claims = grpc_jwt_claims_from_json(json, s);
+  GPR_ASSERT(claims != NULL);
+  GPR_ASSERT(grpc_jwt_claims_json(claims) == json);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), "https://foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_issuer(claims), "blah.foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_subject(claims), "juju@blah.foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_id(claims), "jwtuniqueid") == 0);
+  GPR_ASSERT(grpc_jwt_claims_check(claims, "https://foo.com") ==
+             GRPC_JWT_VERIFIER_OK);
+  grpc_jwt_claims_destroy(claims);
+}
+
+static void test_expired_claims_failure(void) {
+  grpc_jwt_claims *claims;
+  gpr_slice s = gpr_slice_from_copied_string(expired_claims);
+  grpc_json *json = grpc_json_parse_string_with_len(
+      (char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s));
+  gpr_timespec exp_iat = {100, 0};
+  gpr_timespec exp_exp = {120, 0};
+  gpr_timespec exp_nbf = {60, 0};
+  GPR_ASSERT(json != NULL);
+  claims = grpc_jwt_claims_from_json(json, s);
+  GPR_ASSERT(claims != NULL);
+  GPR_ASSERT(grpc_jwt_claims_json(claims) == json);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), "https://foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_issuer(claims), "blah.foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_subject(claims), "juju@blah.foo.com") == 0);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_id(claims), "jwtuniqueid") == 0);
+  GPR_ASSERT(gpr_time_cmp(grpc_jwt_claims_issued_at(claims), exp_iat) == 0);
+  GPR_ASSERT(gpr_time_cmp(grpc_jwt_claims_expires_at(claims), exp_exp) == 0);
+  GPR_ASSERT(gpr_time_cmp(grpc_jwt_claims_not_before(claims), exp_nbf) == 0);
+
+  GPR_ASSERT(grpc_jwt_claims_check(claims, "https://foo.com") ==
+             GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE);
+  grpc_jwt_claims_destroy(claims);
+}
+
+static void test_invalid_claims_failure(void) {
+  gpr_slice s = gpr_slice_from_copied_string(invalid_claims);
+  grpc_json *json = grpc_json_parse_string_with_len(
+      (char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s));
+  GPR_ASSERT(grpc_jwt_claims_from_json(json, s) == NULL);
+}
+
+static void test_bad_audience_claims_failure(void) {
+  grpc_jwt_claims *claims;
+  gpr_slice s = gpr_slice_from_copied_string(claims_without_time_constraint);
+  grpc_json *json = grpc_json_parse_string_with_len(
+      (char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s));
+  GPR_ASSERT(json != NULL);
+  claims = grpc_jwt_claims_from_json(json, s);
+  GPR_ASSERT(claims != NULL);
+  GPR_ASSERT(grpc_jwt_claims_check(claims, "https://bar.com") ==
+             GRPC_JWT_VERIFIER_BAD_AUDIENCE);
+  grpc_jwt_claims_destroy(claims);
+}
+
+static char *json_key_str(const char *last_part) {
+  size_t result_len = strlen(json_key_str_part1) + strlen(json_key_str_part2) +
+                      strlen(last_part);
+  char *result = gpr_malloc(result_len + 1);
+  char *current = result;
+  strcpy(result, json_key_str_part1);
+  current += strlen(json_key_str_part1);
+  strcpy(current, json_key_str_part2);
+  current += strlen(json_key_str_part2);
+  strcpy(current, last_part);
+  return result;
+}
+
+static char *good_google_email_keys(void) {
+  size_t result_len = strlen(good_google_email_keys_part1) +
+                      strlen(good_google_email_keys_part2);
+  char *result = gpr_malloc(result_len + 1);
+  char *current = result;
+  strcpy(result, good_google_email_keys_part1);
+  current += strlen(good_google_email_keys_part1);
+  strcpy(current, good_google_email_keys_part2);
+  return result;
+}
+
+static grpc_httpcli_response http_response(int status, char *body) {
+  grpc_httpcli_response response;
+  memset(&response, 0, sizeof(grpc_httpcli_response));
+  response.status = status;
+  response.body = body;
+  response.body_length = strlen(body);
+  return response;
+}
+
+static int httpcli_post_should_not_be_called(
+    const grpc_httpcli_request *request, const char *body_bytes,
+    size_t body_size, gpr_timespec deadline,
+    grpc_httpcli_response_cb on_response, void *user_data) {
+  GPR_ASSERT("HTTP POST should not be called" == NULL);
+  return 1;
+}
+
+static int httpcli_get_google_keys_for_email(
+    const grpc_httpcli_request *request, gpr_timespec deadline,
+    grpc_httpcli_response_cb on_response, void *user_data) {
+  grpc_httpcli_response response = http_response(200, good_google_email_keys());
+  GPR_ASSERT(request->use_ssl);
+  GPR_ASSERT(strcmp(request->host, "www.googleapis.com") == 0);
+  GPR_ASSERT(strcmp(request->path,
+                    "/robot/v1/metadata/x509/"
+                    "777-abaslkan11hlb6nmim3bpspl31ud@developer."
+                    "gserviceaccount.com") == 0);
+  on_response(user_data, &response);
+  gpr_free(response.body);
+  return 1;
+}
+
+static void on_verification_success(void *user_data,
+                                    grpc_jwt_verifier_status status,
+                                    grpc_jwt_claims *claims) {
+  GPR_ASSERT(status == GRPC_JWT_VERIFIER_OK);
+  GPR_ASSERT(claims != NULL);
+  GPR_ASSERT(user_data == (void *)expected_user_data);
+  GPR_ASSERT(strcmp(grpc_jwt_claims_audience(claims), expected_audience) == 0);
+  grpc_jwt_claims_destroy(claims);
+}
+
+static void test_jwt_verifier_google_email_issuer_success(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_google_email_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_google_keys_for_email,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_success, (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static int httpcli_get_custom_keys_for_email(
+    const grpc_httpcli_request *request, gpr_timespec deadline,
+    grpc_httpcli_response_cb on_response, void *user_data) {
+  grpc_httpcli_response response = http_response(200, gpr_strdup(good_jwk_set));
+  GPR_ASSERT(request->use_ssl);
+  GPR_ASSERT(strcmp(request->host, "keys.bar.com") == 0);
+  GPR_ASSERT(strcmp(request->path, "/jwk/foo@bar.com") == 0);
+  on_response(user_data, &response);
+  gpr_free(response.body);
+  return 1;
+}
+
+static void test_jwt_verifier_custom_email_issuer_success(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(&custom_mapping, 1);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_custom_email_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_custom_keys_for_email,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_success, (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static int httpcli_get_jwk_set(
+    const grpc_httpcli_request *request, gpr_timespec deadline,
+    grpc_httpcli_response_cb on_response, void *user_data) {
+  grpc_httpcli_response response = http_response(200, gpr_strdup(good_jwk_set));
+  GPR_ASSERT(request->use_ssl);
+  GPR_ASSERT(strcmp(request->host, "www.googleapis.com") == 0);
+  GPR_ASSERT(strcmp(request->path, "/oauth2/v3/certs") == 0);
+  on_response(user_data, &response);
+  gpr_free(response.body);
+  return 1;
+}
+
+static int httpcli_get_openid_config(const grpc_httpcli_request *request,
+                                     gpr_timespec deadline,
+                                     grpc_httpcli_response_cb on_response,
+                                     void *user_data) {
+  grpc_httpcli_response response =
+      http_response(200, gpr_strdup(good_openid_config));
+  GPR_ASSERT(request->use_ssl);
+  GPR_ASSERT(strcmp(request->host, "accounts.google.com") == 0);
+  GPR_ASSERT(strcmp(request->path, GRPC_OPENID_CONFIG_URL_SUFFIX) == 0);
+  grpc_httpcli_set_override(httpcli_get_jwk_set,
+                            httpcli_post_should_not_be_called);
+  on_response(user_data, &response);
+  gpr_free(response.body);
+  return 1;
+}
+
+static void test_jwt_verifier_url_issuer_success(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_url_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_openid_config,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_success, (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static void on_verification_key_retrieval_error(void *user_data,
+                                                grpc_jwt_verifier_status status,
+                                                grpc_jwt_claims *claims) {
+  GPR_ASSERT(status == GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR);
+  GPR_ASSERT(claims == NULL);
+  GPR_ASSERT(user_data == (void *)expected_user_data);
+}
+
+static int httpcli_get_bad_json(const grpc_httpcli_request *request,
+                                gpr_timespec deadline,
+                                grpc_httpcli_response_cb on_response,
+                                void *user_data) {
+  grpc_httpcli_response response =
+      http_response(200, gpr_strdup("{\"bad\": \"stuff\"}"));
+  GPR_ASSERT(request->use_ssl);
+  on_response(user_data, &response);
+  gpr_free(response.body);
+  return 1;
+}
+
+static void test_jwt_verifier_url_issuer_bad_config(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_url_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_bad_json,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_key_retrieval_error,
+                           (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static void test_jwt_verifier_bad_json_key(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_google_email_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_bad_json,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_key_retrieval_error,
+                           (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static void corrupt_jwt_sig(char *jwt) {
+  gpr_slice sig;
+  char *bad_b64_sig;
+  gpr_uint8 *sig_bytes;
+  char *last_dot = strrchr(jwt, '.');
+  GPR_ASSERT(last_dot != NULL);
+  sig = grpc_base64_decode(last_dot + 1, 1);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(sig));
+  sig_bytes = GPR_SLICE_START_PTR(sig);
+  (*sig_bytes)++; /* Corrupt first byte. */
+  bad_b64_sig =
+      grpc_base64_encode(GPR_SLICE_START_PTR(sig), GPR_SLICE_LENGTH(sig), 1, 0);
+  memcpy(last_dot + 1, bad_b64_sig, strlen(bad_b64_sig));
+  gpr_free(bad_b64_sig);
+  gpr_slice_unref(sig);
+}
+
+static void on_verification_bad_signature(void *user_data,
+                                          grpc_jwt_verifier_status status,
+                                          grpc_jwt_claims *claims) {
+  GPR_ASSERT(status == GRPC_JWT_VERIFIER_BAD_SIGNATURE);
+  GPR_ASSERT(claims == NULL);
+  GPR_ASSERT(user_data == (void *)expected_user_data);
+}
+
+static void test_jwt_verifier_bad_signature(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  char *jwt = NULL;
+  char *key_str = json_key_str(json_key_str_part3_for_url_issuer);
+  grpc_auth_json_key key = grpc_auth_json_key_create_from_string(key_str);
+  gpr_free(key_str);
+  GPR_ASSERT(grpc_auth_json_key_is_valid(&key));
+  grpc_httpcli_set_override(httpcli_get_openid_config,
+                            httpcli_post_should_not_be_called);
+  jwt =
+      grpc_jwt_encode_and_sign(&key, expected_audience, expected_lifetime, NULL);
+  grpc_auth_json_key_destruct(&key);
+  corrupt_jwt_sig(jwt);
+  GPR_ASSERT(jwt != NULL);
+  grpc_jwt_verifier_verify(verifier, NULL, jwt, expected_audience,
+                           on_verification_bad_signature,
+                           (void *)expected_user_data);
+  gpr_free(jwt);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+static int httpcli_get_should_not_be_called(
+    const grpc_httpcli_request *request, gpr_timespec deadline,
+    grpc_httpcli_response_cb on_response, void *user_data) {
+  GPR_ASSERT(0);
+  return 1;
+}
+
+static void on_verification_bad_format(void *user_data,
+                                       grpc_jwt_verifier_status status,
+                                       grpc_jwt_claims *claims) {
+  GPR_ASSERT(status == GRPC_JWT_VERIFIER_BAD_FORMAT);
+  GPR_ASSERT(claims == NULL);
+  GPR_ASSERT(user_data == (void *)expected_user_data);
+}
+
+static void test_jwt_verifier_bad_format(void) {
+  grpc_jwt_verifier *verifier = grpc_jwt_verifier_create(NULL, 0);
+  grpc_httpcli_set_override(httpcli_get_should_not_be_called,
+                            httpcli_post_should_not_be_called);
+  grpc_jwt_verifier_verify(verifier, NULL, "bad jwt", expected_audience,
+                           on_verification_bad_format,
+                           (void *)expected_user_data);
+  grpc_jwt_verifier_destroy(verifier);
+  grpc_httpcli_set_override(NULL, NULL);
+}
+
+/* find verification key: bad jks, cannot find key in jks */
+/* bad signature custom provided email*/
+/* bad key */
+
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  test_claims_success();
+  test_expired_claims_failure();
+  test_invalid_claims_failure();
+  test_bad_audience_claims_failure();
+  test_jwt_verifier_google_email_issuer_success();
+  test_jwt_verifier_custom_email_issuer_success();
+  test_jwt_verifier_url_issuer_success();
+  test_jwt_verifier_url_issuer_bad_config();
+  test_jwt_verifier_bad_json_key();
+  test_jwt_verifier_bad_signature();
+  test_jwt_verifier_bad_format();
+  return 0;
+}
+

test/core/security/print_google_default_creds_token.c

diff --git a/test/core/security/print_google_default_creds_token.c b/test/core/security/print_google_default_creds_token.c
index a0da5b2..5b55a4d 100644
--- a/test/core/security/print_google_default_creds_token.c
+++ b/test/core/security/print_google_default_creds_token.c
@@ -35,6 +35,7 @@
 #include <string.h>
 
 #include "src/core/security/credentials.h"
+#include "src/core/support/string.h"
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
 #include <grpc/support/alloc.h>
@@ -56,9 +57,11 @@
   if (status == GRPC_CREDENTIALS_ERROR) {
     fprintf(stderr, "Fetching token failed.\n");
   } else {
+    char *token;
     GPR_ASSERT(num_md == 1);
-    printf("\nGot token: %s\n\n",
-           (const char *)GPR_SLICE_START_PTR(md_elems[0].value));
+    token = gpr_dump_slice(md_elems[0].value, GPR_DUMP_ASCII);
+    printf("\nGot token: %s\n\n", token);
+    gpr_free(token);
   }
   gpr_mu_lock(GRPC_POLLSET_MU(&sync->pollset));
   sync->is_done = 1;
@@ -88,13 +91,13 @@
   grpc_pollset_init(&sync.pollset);
   sync.is_done = 0;
 
-  grpc_credentials_get_request_metadata(creds, &sync.pollset, "", on_metadata_response, &sync);
+  grpc_credentials_get_request_metadata(creds, &sync.pollset, service_url,
+                                        on_metadata_response, &sync);
 
   gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
   while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
   gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
-  grpc_pollset_destroy(&sync.pollset);
   grpc_credentials_release(creds);
 
 end:

test/core/security/verify_jwt.c

diff --git a/test/core/security/verify_jwt.c b/test/core/security/verify_jwt.c
new file mode 100644
index 0000000..e90be5d
--- /dev/null
+++ b/test/core/security/verify_jwt.c
@@ -0,0 +1,119 @@
+/*
+ *
+ * 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 <stdio.h>
+#include <string.h>
+
+#include "src/core/security/jwt_verifier.h"
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/cmdline.h>
+#include <grpc/support/log.h>
+#include <grpc/support/slice.h>
+#include <grpc/support/sync.h>
+
+typedef struct {
+  grpc_pollset pollset;
+  int is_done;
+  int success;
+} synchronizer;
+
+static void print_usage_and_exit(gpr_cmdline *cl, const char *argv0) {
+  char *usage = gpr_cmdline_usage_string(cl, argv0);
+  fprintf(stderr, "%s", usage);
+  gpr_free(usage);
+  gpr_cmdline_destroy(cl);
+  exit(1);
+}
+
+static void on_jwt_verification_done(void *user_data,
+                                     grpc_jwt_verifier_status status,
+                                     grpc_jwt_claims *claims) {
+  synchronizer *sync = user_data;
+
+  sync->success = (status == GRPC_JWT_VERIFIER_OK);
+  if (sync->success) {
+    char *claims_str;
+    GPR_ASSERT(claims != NULL);
+    claims_str =
+        grpc_json_dump_to_string((grpc_json *)grpc_jwt_claims_json(claims), 2);
+    printf("Claims: \n\n%s\n", claims_str);
+    gpr_free(claims_str);
+    grpc_jwt_claims_destroy(claims);
+  } else {
+    GPR_ASSERT(claims == NULL);
+    fprintf(stderr, "Verification failed with error %s\n",
+            grpc_jwt_verifier_status_to_string(status));
+  }
+
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync->pollset));
+  sync->is_done = 1;
+  grpc_pollset_kick(&sync->pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync->pollset));
+}
+
+int main(int argc, char **argv) {
+  synchronizer sync;
+  grpc_jwt_verifier *verifier;
+  gpr_cmdline *cl;
+  char *jwt = NULL;
+  char *aud = NULL;
+
+  cl = gpr_cmdline_create("JWT verifier tool");
+  gpr_cmdline_add_string(cl, "jwt", "JSON web token to verify", &jwt);
+  gpr_cmdline_add_string(cl, "aud", "Audience for the JWT", &aud);
+  gpr_cmdline_parse(cl, argc, argv);
+  if (jwt == NULL || aud == NULL) {
+    print_usage_and_exit(cl, argv[0]);
+  }
+
+  verifier = grpc_jwt_verifier_create(NULL, 0);
+
+  grpc_init();
+
+  grpc_pollset_init(&sync.pollset);
+  sync.is_done = 0;
+
+  grpc_jwt_verifier_verify(verifier, &sync.pollset, jwt, aud,
+                           on_jwt_verification_done, &sync);
+
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
+  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
+
+  grpc_jwt_verifier_destroy(verifier);
+  gpr_cmdline_destroy(cl);
+  return !sync.success;
+}
+

test/core/support/slice_test.c

diff --git a/test/core/support/slice_test.c b/test/core/support/slice_test.c
index 63dedea..3ca8742 100644
--- a/test/core/support/slice_test.c
+++ b/test/core/support/slice_test.c
@@ -35,6 +35,7 @@
 
 #include <string.h>
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include "test/core/util/test_config.h"
 

test/core/support/string_test.c

diff --git a/test/core/support/string_test.c b/test/core/support/string_test.c
index b59082e..f04e72a 100644
--- a/test/core/support/string_test.c
+++ b/test/core/support/string_test.c
@@ -58,21 +58,49 @@
   GPR_ASSERT(NULL == gpr_strdup(NULL));
 }
 
-static void expect_hexdump(const char *buf, size_t len, gpr_uint32 flags,
-                           const char *result) {
-  char *got = gpr_hexdump(buf, len, flags);
+static void expect_dump(const char *buf, size_t len, gpr_uint32 flags,
+                        const char *result) {
+  char *got = gpr_dump(buf, len, flags);
   GPR_ASSERT(0 == strcmp(got, result));
   gpr_free(got);
 }
 
-static void test_hexdump(void) {
-  LOG_TEST_NAME("test_hexdump");
-  expect_hexdump("\x01", 1, 0, "01");
-  expect_hexdump("\x01", 1, GPR_HEXDUMP_PLAINTEXT, "01 '.'");
-  expect_hexdump("\x01\x02", 2, 0, "01 02");
-  expect_hexdump("\x01\x23\x45\x67\x89\xab\xcd\xef", 8, 0,
+static void test_dump(void) {
+  LOG_TEST_NAME("test_dump");
+  expect_dump("\x01", 1, GPR_DUMP_HEX, "01");
+  expect_dump("\x01", 1, GPR_DUMP_HEX | GPR_DUMP_ASCII, "01 '.'");
+  expect_dump("\x01\x02", 2, GPR_DUMP_HEX, "01 02");
+  expect_dump("\x01\x23\x45\x67\x89\xab\xcd\xef", 8, GPR_DUMP_HEX,
                  "01 23 45 67 89 ab cd ef");
-  expect_hexdump("ab", 2, GPR_HEXDUMP_PLAINTEXT, "61 62 'ab'");
+  expect_dump("ab", 2, GPR_DUMP_HEX | GPR_DUMP_ASCII, "61 62 'ab'");
+}
+
+static void expect_slice_dump(gpr_slice slice, gpr_uint32 flags,
+                              const char *result) {
+  char *got = gpr_dump_slice(slice, flags);
+  GPR_ASSERT(0 == strcmp(got, result));
+  gpr_free(got);
+  gpr_slice_unref(slice);
+}
+
+static void test_dump_slice(void) {
+  static const char *text = "HELLO WORLD!";
+  static const char *long_text =
+      "It was a bright cold day in April, and the clocks were striking "
+      "thirteen. Winston Smith, his chin nuzzled into his breast in an effort "
+      "to escape the vile wind, slipped quickly through the glass doors of "
+      "Victory Mansions, though not quickly enough to prevent a swirl of "
+      "gritty dust from entering along with him.";
+
+  LOG_TEST_NAME("test_dump_slice");
+
+  expect_slice_dump(gpr_slice_from_copied_string(text), GPR_DUMP_ASCII, text);
+  expect_slice_dump(gpr_slice_from_copied_string(long_text), GPR_DUMP_ASCII,
+                    long_text);
+  expect_slice_dump(gpr_slice_from_copied_buffer("\x01", 1), GPR_DUMP_HEX,
+                    "01");
+  expect_slice_dump(gpr_slice_from_copied_buffer("\x01", 1),
+                    GPR_DUMP_HEX | GPR_DUMP_ASCII, "01 '.'");
 }
 
 static void test_pu32_fail(const char *s) {
@@ -148,7 +176,8 @@
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_strdup();
-  test_hexdump();
+  test_dump();
+  test_dump_slice();
   test_parse_uint32();
   test_asprintf();
   return 0;

test/core/transport/chttp2/bin_encoder_test.c

diff --git a/test/core/transport/chttp2/bin_encoder_test.c b/test/core/transport/chttp2/bin_encoder_test.c
index 983eaf5..1ffd8ed 100644
--- a/test/core/transport/chttp2/bin_encoder_test.c
+++ b/test/core/transport/chttp2/bin_encoder_test.c
@@ -44,10 +44,8 @@
 static void expect_slice_eq(gpr_slice expected, gpr_slice slice, char *debug,
                             int line) {
   if (0 != gpr_slice_cmp(slice, expected)) {
-    char *hs = gpr_hexdump((const char *)GPR_SLICE_START_PTR(slice),
-                           GPR_SLICE_LENGTH(slice), GPR_HEXDUMP_PLAINTEXT);
-    char *he = gpr_hexdump((const char *)GPR_SLICE_START_PTR(expected),
-                           GPR_SLICE_LENGTH(expected), GPR_HEXDUMP_PLAINTEXT);
+    char *hs = gpr_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+    char *he = gpr_dump_slice(expected, GPR_DUMP_HEX | GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "FAILED:%d: %s\ngot:  %s\nwant: %s", line, debug, hs,
             he);
     gpr_free(hs);
@@ -83,12 +81,9 @@
   gpr_slice expect = grpc_chttp2_huffman_compress(base64);
   gpr_slice got = grpc_chttp2_base64_encode_and_huffman_compress(input);
   if (0 != gpr_slice_cmp(expect, got)) {
-    char *t = gpr_hexdump((const char *)GPR_SLICE_START_PTR(input),
-                          GPR_SLICE_LENGTH(input), GPR_HEXDUMP_PLAINTEXT);
-    char *e = gpr_hexdump((const char *)GPR_SLICE_START_PTR(expect),
-                          GPR_SLICE_LENGTH(expect), GPR_HEXDUMP_PLAINTEXT);
-    char *g = gpr_hexdump((const char *)GPR_SLICE_START_PTR(got),
-                          GPR_SLICE_LENGTH(got), GPR_HEXDUMP_PLAINTEXT);
+    char *t = gpr_dump_slice(input, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+    char *e = gpr_dump_slice(expect, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+    char *g = gpr_dump_slice(got, GPR_DUMP_HEX | GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "FAILED:%d:\ntest: %s\ngot:  %s\nwant: %s", t, g, e);
     gpr_free(t);
     gpr_free(e);

test/core/transport/chttp2/hpack_parser_test.c

diff --git a/test/core/transport/chttp2/hpack_parser_test.c b/test/core/transport/chttp2/hpack_parser_test.c
index 1d6ad2a..3a31337 100644
--- a/test/core/transport/chttp2/hpack_parser_test.c
+++ b/test/core/transport/chttp2/hpack_parser_test.c
@@ -53,7 +53,7 @@
   GPR_ASSERT(evalue);
   GPR_ASSERT(gpr_slice_str_cmp(md->key->slice, ekey) == 0);
   GPR_ASSERT(gpr_slice_str_cmp(md->value->slice, evalue) == 0);
-  grpc_mdelem_unref(md);
+  GRPC_MDELEM_UNREF(md);
 }
 
 static void test_vector(grpc_chttp2_hpack_parser *parser,

test/core/transport/chttp2/hpack_table_test.c

diff --git a/test/core/transport/chttp2/hpack_table_test.c b/test/core/transport/chttp2/hpack_table_test.c
index 8b86e08..15b37d1 100644
--- a/test/core/transport/chttp2/hpack_table_test.c
+++ b/test/core/transport/chttp2/hpack_table_test.c
@@ -167,7 +167,7 @@
                                                  const char *value) {
   grpc_mdelem *md = grpc_mdelem_from_strings(tbl->mdctx, key, value);
   grpc_chttp2_hptbl_find_result r = grpc_chttp2_hptbl_find(tbl, md);
-  grpc_mdelem_unref(md);
+  GRPC_MDELEM_UNREF(md);
   return r;
 }
 

test/core/transport/chttp2/stream_encoder_test.c

diff --git a/test/core/transport/chttp2/stream_encoder_test.c b/test/core/transport/chttp2/stream_encoder_test.c
index bf70d43..e6731ff 100644
--- a/test/core/transport/chttp2/stream_encoder_test.c
+++ b/test/core/transport/chttp2/stream_encoder_test.c
@@ -85,12 +85,8 @@
   grpc_sopb_destroy(&encops);
 
   if (0 != gpr_slice_cmp(merged, expect)) {
-    char *expect_str =
-        gpr_hexdump((char *)GPR_SLICE_START_PTR(expect),
-                    GPR_SLICE_LENGTH(expect), GPR_HEXDUMP_PLAINTEXT);
-    char *got_str =
-        gpr_hexdump((char *)GPR_SLICE_START_PTR(merged),
-                    GPR_SLICE_LENGTH(merged), GPR_HEXDUMP_PLAINTEXT);
+    char *expect_str = gpr_dump_slice(expect, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+    char *got_str = gpr_dump_slice(merged, GPR_DUMP_HEX | GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "mismatched output for %s", expected);
     gpr_log(GPR_ERROR, "EXPECT: %s", expect_str);
     gpr_log(GPR_ERROR, "GOT:    %s", got_str);
@@ -266,7 +262,7 @@
   GPR_ASSERT(0 == gpr_slice_str_cmp(el->key->slice, st->key));
   GPR_ASSERT(0 == gpr_slice_str_cmp(el->value->slice, st->value));
   st->got_hdr = 1;
-  grpc_mdelem_unref(el);
+  GRPC_MDELEM_UNREF(el);
 }
 
 static void test_decode_random_headers_inner(int max_len) {

test/core/transport/metadata_test.c

diff --git a/test/core/transport/metadata_test.c b/test/core/transport/metadata_test.c
index 89deee5..a932e04 100644
--- a/test/core/transport/metadata_test.c
+++ b/test/core/transport/metadata_test.c
@@ -70,10 +70,10 @@
   GPR_ASSERT(s3 != s1);
   GPR_ASSERT(gpr_slice_str_cmp(s1->slice, "hello") == 0);
   GPR_ASSERT(gpr_slice_str_cmp(s3->slice, "very much not hello") == 0);
-  grpc_mdstr_unref(s1);
-  grpc_mdstr_unref(s2);
+  GRPC_MDSTR_UNREF(s1);
+  GRPC_MDSTR_UNREF(s2);
   grpc_mdctx_unref(ctx);
-  grpc_mdstr_unref(s3);
+  GRPC_MDSTR_UNREF(s3);
 }
 
 static void test_create_metadata(void) {
@@ -93,9 +93,9 @@
   GPR_ASSERT(gpr_slice_str_cmp(m1->key->slice, "a") == 0);
   GPR_ASSERT(gpr_slice_str_cmp(m1->value->slice, "b") == 0);
   GPR_ASSERT(gpr_slice_str_cmp(m3->value->slice, "c") == 0);
-  grpc_mdelem_unref(m1);
-  grpc_mdelem_unref(m2);
-  grpc_mdelem_unref(m3);
+  GRPC_MDELEM_UNREF(m1);
+  GRPC_MDELEM_UNREF(m2);
+  GRPC_MDELEM_UNREF(m3);
   grpc_mdctx_unref(ctx);
 }
 
@@ -112,7 +112,7 @@
   /* add, and immediately delete a bunch of different elements */
   for (i = 0; i < MANY; i++) {
     gpr_ltoa(i, buffer);
-    grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", buffer));
+    GRPC_MDELEM_UNREF(grpc_mdelem_from_strings(ctx, "a", buffer));
   }
   /* capacity should not grow */
   GPR_ASSERT(mdtab_capacity_before ==
@@ -140,11 +140,11 @@
     gpr_ltoa(i, buffer);
     md = grpc_mdelem_from_strings(ctx, "a", buffer);
     GPR_ASSERT(md == created[i]);
-    grpc_mdelem_unref(md);
+    GRPC_MDELEM_UNREF(md);
   }
   /* cleanup phase */
   for (i = 0; i < MANY; i++) {
-    grpc_mdelem_unref(created[i]);
+    GRPC_MDELEM_UNREF(created[i]);
   }
   grpc_mdctx_unref(ctx);
 
@@ -160,15 +160,15 @@
   GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 0);
   GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 0);
 
-  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings(ctx, "a", "b"));
   GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
   GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
 
-  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings(ctx, "a", "b"));
   GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
   GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
 
-  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GRPC_MDELEM_UNREF(grpc_mdelem_from_strings(ctx, "a", "b"));
   GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
   GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
 
@@ -196,8 +196,8 @@
   }
 
   for (i = 0; i < nstrs; i++) {
-    grpc_mdstr_ref(strs[i]);
-    grpc_mdstr_unref(strs[i]);
+    GRPC_MDSTR_REF(strs[i]);
+    GRPC_MDSTR_UNREF(strs[i]);
   }
 
   for (i = 0; i < nstrs; i++) {
@@ -209,12 +209,12 @@
   }
 
   for (i = 0; i < nstrs; i++) {
-    grpc_mdstr_unref(strs[shuf[i]]);
+    GRPC_MDSTR_UNREF(strs[shuf[i]]);
     for (j = i + 1; j < nstrs; j++) {
       gpr_asprintf(&buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%dx", shuf[j]);
       test = grpc_mdstr_from_string(ctx, buffer);
       GPR_ASSERT(test == strs[shuf[j]]);
-      grpc_mdstr_unref(test);
+      GRPC_MDSTR_UNREF(test);
       gpr_free(buffer);
     }
   }
@@ -237,14 +237,14 @@
   str = grpc_mdstr_from_string(
       ctx, "123456789012345678901234567890123456789012345678901234567890");
   slice = gpr_slice_ref(str->slice);
-  grpc_mdstr_unref(str);
+  GRPC_MDSTR_UNREF(str);
   gpr_slice_unref(slice);
 
   str = grpc_mdstr_from_string(
       ctx, "123456789012345678901234567890123456789012345678901234567890");
   slice = gpr_slice_ref(str->slice);
   gpr_slice_unref(slice);
-  grpc_mdstr_unref(str);
+  GRPC_MDSTR_UNREF(str);
 
   grpc_mdctx_unref(ctx);
 }
@@ -264,7 +264,7 @@
   GPR_ASSERT(0 == gpr_slice_cmp(slice1, slice2));
 
   gpr_slice_unref(slice2);
-  grpc_mdstr_unref(str);
+  GRPC_MDSTR_UNREF(str);
   grpc_mdctx_unref(ctx);
 }
 

test/core/tsi/transport_security_test.c

diff --git a/test/core/tsi/transport_security_test.c b/test/core/tsi/transport_security_test.c
index bba6744..bec3866 100644
--- a/test/core/tsi/transport_security_test.c
+++ b/test/core/tsi/transport_security_test.c
@@ -46,9 +46,6 @@
 #include "src/core/tsi/ssl_transport_security.h"
 #include "test/core/util/test_config.h"
 
-/* Currently points to 1.0.2a. */
-#define GRPC_MIN_OPENSSL_VERSION_NUMBER 0x1000201fL
-
 typedef struct {
   /* 1 if success, 0 if failure. */
   int expected;
@@ -299,13 +296,8 @@
   }
 }
 
-static void test_openssl_version(void) {
-  GPR_ASSERT(OPENSSL_VERSION_NUMBER >= GRPC_MIN_OPENSSL_VERSION_NUMBER);
-}
-
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_peer_matches_name();
-  test_openssl_version();
   return 0;
 }

test/core/util/grpc_profiler.c

diff --git a/test/core/util/grpc_profiler.c b/test/core/util/grpc_profiler.c
index d5b6cfe..c2c0c9c 100644
--- a/test/core/util/grpc_profiler.c
+++ b/test/core/util/grpc_profiler.c
@@ -43,11 +43,17 @@
 #include <grpc/support/log.h>
 
 void grpc_profiler_start(const char *filename) {
-  gpr_log(GPR_DEBUG,
-          "You do not have google-perftools installed, profiling is disabled [for %s]", filename);
-  gpr_log(GPR_DEBUG,
-          "To install on ubuntu: sudo apt-get install google-perftools "
-          "libgoogle-perftools-dev");
+  static int printed_warning = 0;
+  if (!printed_warning) {
+    gpr_log(GPR_DEBUG,
+            "You do not have google-perftools installed, profiling is disabled "
+            "[for %s]",
+            filename);
+    gpr_log(GPR_DEBUG,
+            "To install on ubuntu: sudo apt-get install google-perftools "
+            "libgoogle-perftools-dev");
+    printed_warning = 1;
+  }
 }
 
 void grpc_profiler_stop(void) {}

test/cpp/common/secure_auth_context_test.cc

diff --git a/test/cpp/common/secure_auth_context_test.cc b/test/cpp/common/secure_auth_context_test.cc
new file mode 100644
index 0000000..6f8fb8f
--- /dev/null
+++ b/test/cpp/common/secure_auth_context_test.cc
@@ -0,0 +1,77 @@
+/*
+ *
+ * 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 <grpc++/auth_context.h>
+#include <gtest/gtest.h>
+#include "src/cpp/common/secure_auth_context.h"
+#include "src/core/security/security_context.h"
+
+namespace grpc {
+namespace {
+
+class SecureAuthContextTest : public ::testing::Test {};
+
+// Created with nullptr
+TEST_F(SecureAuthContextTest, EmptyContext) {
+  SecureAuthContext context(nullptr);
+  EXPECT_TRUE(context.GetPeerIdentity().empty());
+  EXPECT_TRUE(context.GetPeerIdentityPropertyName().empty());
+  EXPECT_TRUE(context.FindPropertyValues("").empty());
+  EXPECT_TRUE(context.FindPropertyValues("whatever").empty());
+}
+
+TEST_F(SecureAuthContextTest, Properties) {
+  grpc_auth_context* ctx = grpc_auth_context_create(NULL, 3);
+  ctx->properties[0] = grpc_auth_property_init_from_cstring("name", "chapi");
+  ctx->properties[1] = grpc_auth_property_init_from_cstring("name", "chapo");
+  ctx->properties[2] = grpc_auth_property_init_from_cstring("foo", "bar");
+  ctx->peer_identity_property_name = ctx->properties[0].name;
+
+  SecureAuthContext context(ctx);
+  std::vector<grpc::string> peer_identity = context.GetPeerIdentity();
+  EXPECT_EQ(2, peer_identity.size());
+  EXPECT_EQ("chapi", peer_identity[0]);
+  EXPECT_EQ("chapo", peer_identity[1]);
+  EXPECT_EQ("name", context.GetPeerIdentityPropertyName());
+  std::vector<grpc::string> bar = context.FindPropertyValues("foo");
+  EXPECT_EQ(1, bar.size());
+  EXPECT_EQ("bar", bar[0]);
+}
+
+}  // namespace
+}  // namespace grpc
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}

test/cpp/end2end/end2end_test.cc

diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 5e850ea..0912b19 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -83,16 +83,31 @@
   }
 }
 
+template <typename T>
+void CheckAuthContext(T* context) {
+  std::shared_ptr<const AuthContext> auth_ctx = context->auth_context();
+  std::vector<grpc::string> fake =
+      auth_ctx->FindPropertyValues("transport_security_type");
+  EXPECT_EQ(1, fake.size());
+  EXPECT_EQ("fake", fake[0]);
+  EXPECT_TRUE(auth_ctx->GetPeerIdentityPropertyName().empty());
+  EXPECT_TRUE(auth_ctx->GetPeerIdentity().empty());
+}
+
 }  // namespace
 
 class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
  public:
-  TestServiceImpl() : signal_client_(false) {}
+  TestServiceImpl() : signal_client_(false), host_(nullptr) {}
+  explicit TestServiceImpl(const grpc::string& host) : signal_client_(false), host_(new grpc::string(host)) {}
 
   Status Echo(ServerContext* context, const EchoRequest* request,
               EchoResponse* response) GRPC_OVERRIDE {
     response->set_message(request->message());
     MaybeEchoDeadline(context, request, response);
+    if (host_) {
+      response->mutable_param()->set_host(*host_);
+    }
     if (request->has_param() && request->param().client_cancel_after_us()) {
       {
         std::unique_lock<std::mutex> lock(mu_);
@@ -123,6 +138,9 @@
         context->AddTrailingMetadata((*iter).first, (*iter).second);
       }
     }
+    if (request->has_param() && request->param().check_auth_context()) {
+      CheckAuthContext(context);
+    }
     return Status::OK;
   }
 
@@ -191,6 +209,7 @@
  private:
   bool signal_client_;
   std::mutex mu_;
+  std::unique_ptr<grpc::string> host_;
 };
 
 class TestServiceImplDupPkg
@@ -205,7 +224,7 @@
 
 class End2endTest : public ::testing::Test {
  protected:
-  End2endTest() : kMaxMessageSize_(8192), thread_pool_(2) {}
+  End2endTest() : kMaxMessageSize_(8192), special_service_("special"), thread_pool_(2) {}
 
   void SetUp() GRPC_OVERRIDE {
     int port = grpc_pick_unused_port_or_die();
@@ -215,6 +234,7 @@
     builder.AddListeningPort(server_address_.str(),
                              FakeTransportSecurityServerCredentials());
     builder.RegisterService(&service_);
+    builder.RegisterService("special", &special_service_);
     builder.SetMaxMessageSize(
         kMaxMessageSize_);  // For testing max message size.
     builder.RegisterService(&dup_pkg_service_);
@@ -236,6 +256,7 @@
   std::ostringstream server_address_;
   const int kMaxMessageSize_;
   TestServiceImpl service_;
+  TestServiceImpl special_service_;
   TestServiceImplDupPkg dup_pkg_service_;
   ThreadPool thread_pool_;
 };
@@ -254,6 +275,22 @@
   }
 }
 
+TEST_F(End2endTest, SimpleRpcWithHost) {
+  ResetStub();
+
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+
+  ClientContext context;
+  context.set_authority("special");
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(response.has_param());
+  EXPECT_EQ(response.param().host(), "special");
+  EXPECT_TRUE(s.ok());
+}
+
 TEST_F(End2endTest, SimpleRpc) {
   ResetStub();
   SendRpc(stub_.get(), 1);
@@ -726,6 +763,21 @@
   EXPECT_EQ(s.error_code(), StatusCode::CANCELLED);
 }
 
+TEST_F(End2endTest, ClientAuthContext) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("Hello");
+  request.mutable_param()->set_check_auth_context(true);
+
+  ClientContext context;
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(s.ok());
+
+  CheckAuthContext(&context);
+}
+
 }  // namespace testing
 }  // namespace grpc
 

test/cpp/util/messages.proto

diff --git a/test/cpp/util/messages.proto b/test/cpp/util/messages.proto
index 062f66c..3708972 100644
--- a/test/cpp/util/messages.proto
+++ b/test/cpp/util/messages.proto
@@ -37,6 +37,7 @@
   optional int32 client_cancel_after_us = 2;
   optional int32 server_cancel_after_us = 3;
   optional bool echo_metadata = 4;
+  optional bool check_auth_context = 5;
 }
 
 message EchoRequest {
@@ -46,6 +47,7 @@
 
 message ResponseParams {
   optional int64 request_deadline = 1;
+  optional string host = 2;
 }
 
 message EchoResponse {

tools/buildgen/generate_projects.py

diff --git a/tools/buildgen/generate_projects.py b/tools/buildgen/generate_projects.py
new file mode 100755
index 0000000..1964ceb
--- /dev/null
+++ b/tools/buildgen/generate_projects.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python2.7
+
+# 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 glob
+import os
+import sys
+import tempfile
+sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', 'run_tests'))
+
+assert sys.argv[1:], 'run generate_projects.sh instead of this directly'
+
+import jobset
+
+os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '..', '..'))
+json = sys.argv[1:]
+
+test = {} if 'TEST' in os.environ else None
+
+plugins = sorted(glob.glob('tools/buildgen/plugins/*.py'))
+
+jobs = []
+for root, dirs, files in os.walk('templates'):
+	for f in files:
+		if os.path.splitext(f)[1] == '.template':
+			out = '.' + root[len('templates'):] + '/' + os.path.splitext(f)[0]
+			cmd = ['tools/buildgen/mako_renderer.py']
+			for plugin in plugins:
+				cmd.append('-p')
+				cmd.append(plugin)
+			for js in json:
+				cmd.append('-d')
+				cmd.append(js)
+			cmd.append('-o')
+			if test is None:
+				cmd.append(out)
+			else:
+				tf = tempfile.mkstemp()
+				test[out] = tf[1]
+				os.close(tf[0])
+				cmd.append(test[out])
+			cmd.append(root + '/' + f)
+			jobs.append(jobset.JobSpec(cmd, shortname=out))
+
+jobset.run(jobs)
+
+if test is not None:
+	for s, g in test.iteritems():
+		assert(0 == os.system('diff %s %s' % (s, g)))
+		os.unlink(g)

tools/buildgen/generate_projects.sh

diff --git a/tools/buildgen/generate_projects.sh b/tools/buildgen/generate_projects.sh
index 5399867..32fc90f 100755
--- a/tools/buildgen/generate_projects.sh
+++ b/tools/buildgen/generate_projects.sh
@@ -45,32 +45,6 @@
 
 . tools/buildgen/generate_build_additions.sh
 
-global_plugins=`find ./tools/buildgen/plugins -name '*.py' |
-  sort | grep -v __init__ | awk ' { printf "-p %s ", $0 } '`
-
-for dir in . ; do
-  local_plugins=`find $dir/templates -name '*.py' |
-    sort | grep -v __init__ | awk ' { printf "-p %s ", $0 } '`
-
-  plugins="$global_plugins $local_plugins"
-
-  find -L $dir/templates -type f -and -name *.template | while read file ; do
-    out=${dir}/${file#$dir/templates/}  # strip templates dir prefix
-    out=${out%.*}  # strip template extension
-    echo "generating file: $out"
-    json_files="build.json $gen_build_files"
-    data=`for i in $json_files ; do echo $i ; done | awk ' { printf "-d %s ", $0 } '`
-    if [ "x$TEST" = "xtrue" ] ; then
-      actual_out=$out
-      out=`mktemp /tmp/gentXXXXXX`
-    fi
-    mkdir -p `dirname $out`  # make sure dest directory exist
-    $mako_renderer $plugins $data -o $out $file
-    if [ "x$TEST" = "xtrue" ] ; then
-      diff -q $out $actual_out
-      rm $out
-    fi
-  done
-done
+tools/buildgen/generate_projects.py build.json $gen_build_files
 
 rm $gen_build_files

tools/distrib/python/submit.py

diff --git a/tools/distrib/python/submit.py b/tools/distrib/python/submit.py
index dd48f44..a3615b3 100755
--- a/tools/distrib/python/submit.py
+++ b/tools/distrib/python/submit.py
@@ -66,6 +66,12 @@
 except:
   pass
 
+# Build the Cython C files
+build_env = os.environ.copy()
+build_env['GRPC_PYTHON_BUILD_WITH_CYTHON'] = "1"
+cmd = ['python', 'setup.py', 'build_ext', '--inplace']
+subprocess.call(cmd, cwd=pkgdir, env=build_env)
+
 # Make the push.
 cmd = ['python', 'setup.py', 'sdist']
 subprocess.call(cmd, cwd=pkgdir)

tools/dockerfile/grpc_java/Dockerfile

diff --git a/tools/dockerfile/grpc_java/Dockerfile b/tools/dockerfile/grpc_java/Dockerfile
index 15fce27..7b1fe56 100644
--- a/tools/dockerfile/grpc_java/Dockerfile
+++ b/tools/dockerfile/grpc_java/Dockerfile
@@ -30,10 +30,8 @@
 # Dockerfile for the gRPC Java dev image
 FROM grpc/java_base
 
-RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git /var/local/git/grpc-java
-RUN cd /var/local/git/grpc-java/lib/netty && \
-  mvn -pl codec-http2 -am -DskipTests install clean
-RUN cd /var/local/git/grpc-java && \
+RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git /var/local/git/grpc-java && \
+  cd /var/local/git/grpc-java && \
   ./gradlew :grpc-interop-testing:installDist -PskipCodegen=true
 
 # Add a service_account directory containing the auth creds file

tools/dockerfile/grpc_java_android/Dockerfile

diff --git a/tools/dockerfile/grpc_java_android/Dockerfile b/tools/dockerfile/grpc_java_android/Dockerfile
index 2dc2202..8df0707 100644
--- a/tools/dockerfile/grpc_java_android/Dockerfile
+++ b/tools/dockerfile/grpc_java_android/Dockerfile
@@ -43,27 +43,20 @@
 # Some old Docker versions consider '/' as HOME
 ENV HOME /root
 
-# Update sdk for android 5.1 (API level 22)
-RUN echo y | android update sdk --all --filter platform-tools,build-tools-22.0.1,sys-img-armeabi-v7a-addon-google_apis-google-22,sys-img-armeabi-v7a-addon-google_apis-google-21,sys-img-armeabi-v7a-android-19,addon-google_apis-google-22,addon-google_apis-google-21,addon-google_apis-google-19,extra-android-m2repository,extra-google-m2repository --no-ui --force
+# Update sdk for android API level 19 (4.4), 21 (5.0), 22 (5.1).
+RUN echo y | android update sdk --all --filter platform-tools,build-tools-22.0.1,sys-img-armeabi-v7a-addon-google_apis-google-22,sys-img-armeabi-v7a-addon-google_apis-google-21,sys-img-armeabi-v7a-android-19,android-22,android-21,android-19,addon-google_apis-google-22,addon-google_apis-google-21,addon-google_apis-google-19,extra-android-m2repository,extra-google-m2repository --no-ui --force
 
 
-# Create an AVD with API level 22
-RUN echo no | android create avd --force -n avd-google-api-22 -t "Google Inc.:Google APIs:22" --abi google_apis/armeabi-v7a
-RUN echo no | android create avd --force -n avd-google-api-21 -t "Google Inc.:Google APIs:21" --abi google_apis/armeabi-v7a
-RUN echo no | android create avd --force -n avd-google-api-19 -t "Google Inc.:Google APIs:19" --abi default/armeabi-v7a
+# Create AVDs with API level 19,21,22
+RUN echo no | android create avd --force -n avd-google-api-22 -t "Google Inc.:Google APIs:22" --abi google_apis/armeabi-v7a && \
+  echo no | android create avd --force -n avd-google-api-21 -t "Google Inc.:Google APIs:21" --abi google_apis/armeabi-v7a && \
+  echo no | android create avd --force -n avd-google-api-19 -t "Google Inc.:Google APIs:19" --abi default/armeabi-v7a
 
 # Pull gRPC Java and trigger download of needed Maven and Gradle artifacts.
 RUN git clone --depth 1 https://github.com/grpc/grpc-java.git /var/local/git/grpc-java && \
   cd /var/local/git/grpc-java && \
-  ./gradlew grpc-core:install grpc-stub:install grpc-okhttp:install grpc-protobuf-nano:install && \
-  rm -r "$(pwd)"
+  ./gradlew grpc-core:install grpc-stub:install grpc-okhttp:install grpc-protobuf-nano:install grpc-compiler:install
 
-# Pull gRPC Android integration test App
-RUN git clone --depth 1 https://github.com/madongfly/grpc-android-test.git /var/local/git/grpc-android-test
-
-# Config android sdk for gradle
-RUN cd /var/local/git/grpc-android-test && echo "sdk.dir=/usr/local/android-sdk-linux" > local.properties
-
-# Build apks to trigger download of needed Maven and Gradle artifacts.
-RUN cd /var/local/git/grpc-android-test && ./gradlew assembleDebug
-RUN cd /var/local/git/grpc-android-test && ./gradlew assembleDebugAndroidTest
+# Config android sdk for gradle and build apk to trigger download of needed Maven and Gradle artifacts.
+RUN cd /var/local/git/grpc-java/android-interop-testing && echo "sdk.dir=/usr/local/android-sdk-linux" > local.properties && \
+  ../gradlew assembleDebug

tools/dockerfile/grpc_java_android/README.md

diff --git a/tools/dockerfile/grpc_java_android/README.md b/tools/dockerfile/grpc_java_android/README.md
index b4c9645..5c897cd 100644
--- a/tools/dockerfile/grpc_java_android/README.md
+++ b/tools/dockerfile/grpc_java_android/README.md
@@ -15,23 +15,23 @@
 Start the emulator in a detached container, the argument is the name of the AVD you want to start:
 
 ```
-$ sudo docker run --name=grpc_android_test -d grpc/android /var/local/git/grpc-android-test/start-emulator.sh avd-api-22
+$ sudo docker run --name=grpc_android_test -d grpc/android /var/local/git/grpc-java/android-interop-testing/start-emulator.sh avd-google-api-22
 ```
 
 You can use the following cammand to wait until the emulator is ready:
 ```
-$ sudo docker exec grpc_android_test /var/local/git/grpc-android-test/wait-for-emulator.sh
+$ sudo docker exec grpc_android_test /var/local/git/grpc-java/android-interop-testing/wait-for-emulator.sh
 ```
 
 When you want to update the apk, run:
 ```
-$ sudo docker exec grpc_android_test /var/local/git/grpc-android-test/update-apk.sh
+$ sudo docker exec grpc_android_test bash -c "cd /var/local/git/grpc-java && git pull origin master && ./gradlew grpc-core:install grpc-stub:install grpc-okhttp:install grpc-protobuf-nano:install grpc-compiler:install && cd android-interop-testing && ../gradlew installDebug"
 ```
-It will pull the fresh code of gRpc Java and our integration test app from github, build and install it to the runing emulator (so you need to make sure there is a runing emulator).
+It pulls the fresh code of gRpc Java and our interop test app from github, build and install it to the runing emulator (so you need to make sure there is a runing emulator).
 
 Trigger the integration test:
 ```
-$ sudo docker exec grpc_android_test /var/local/git/grpc-android-test/run-test.sh -e server_host <hostname or ip address> -e server_port 8030 -e server_host_override foo.test.google.fr -e use_tls true -e use_test_ca true
+$ sudo docker exec grpc_android_test adb -e shell am instrument -w -e server_host <hostname or ip address> -e server_port 8030 -e server_host_override foo.test.google.fr -e use_tls true -e use_test_ca true -e test_case all io.grpc.android.integrationtest/.TesterInstrumentation
 ```
 
 You can also use the android/adb cammands to get more info, such as:

tools/dockerfile/grpc_java_base/Dockerfile

diff --git a/tools/dockerfile/grpc_java_base/Dockerfile b/tools/dockerfile/grpc_java_base/Dockerfile
index 55fbe94..7bf79c8 100644
--- a/tools/dockerfile/grpc_java_base/Dockerfile
+++ b/tools/dockerfile/grpc_java_base/Dockerfile
@@ -44,20 +44,11 @@
       && \
   apt-get clean && rm -r /var/cache/oracle-jdk8-installer/
 
-# Install maven
-RUN wget -O - http://mirror.olnevhost.net/pub/apache/maven/binaries/apache-maven-3.2.1-bin.tar.gz | \
-  tar xz -C /var/local
-
 ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
-ENV M2_HOME /var/local/apache-maven-3.2.1
-ENV PATH $PATH:$JAVA_HOME/bin:$M2_HOME/bin
-ENV LD_LIBRARY_PATH /usr/local/lib
+ENV PATH $PATH:$JAVA_HOME/bin
 
-# Trigger download of as many Maven and Gradle artifacts as possible. We don't build grpc-java
-# because we don't want to install netty
+# Trigger download of as many Gradle artifacts as possible.
 RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git && \
-  cd grpc-java/lib/netty && \
-  mvn -pl codec-http2 -am -DskipTests verify && \
-  cd ../.. && \
-  ./gradlew && \
+  cd grpc-java && \
+  ./gradlew build -PskipCodegen=true && \
   rm -r "$(pwd)"

tools/doxygen/Doxyfile.c++

diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index d782dc1..feb7ad8 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -762,6 +762,7 @@
 
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
+include/grpc++/auth_context.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \

tools/doxygen/Doxyfile.c++.internal

diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 575cd95..67718d8 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -762,6 +762,7 @@
 
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
+include/grpc++/auth_context.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \
@@ -798,11 +799,15 @@
 include/grpc++/thread_pool_interface.h \
 include/grpc++/time.h \
 src/cpp/client/secure_credentials.h \
+src/cpp/common/secure_auth_context.h \
 src/cpp/server/secure_server_credentials.h \
 src/cpp/client/channel.h \
+src/cpp/common/create_auth_context.h \
 src/cpp/server/thread_pool.h \
 src/cpp/client/secure_channel_arguments.cc \
 src/cpp/client/secure_credentials.cc \
+src/cpp/common/secure_auth_context.cc \
+src/cpp/common/secure_create_auth_context.cc \
 src/cpp/server/secure_server_credentials.cc \
 src/cpp/client/channel.cc \
 src/cpp/client/channel_arguments.cc \

tools/doxygen/Doxyfile.core.internal

diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index e2701ec..ac411e3 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -775,6 +775,7 @@
 src/core/security/base64.h \
 src/core/security/credentials.h \
 src/core/security/json_token.h \
+src/core/security/jwt_verifier.h \
 src/core/security/secure_endpoint.h \
 src/core/security/secure_transport_setup.h \
 src/core/security/security_connector.h \
@@ -891,6 +892,7 @@
 src/core/security/credentials_win32.c \
 src/core/security/google_default_credentials.c \
 src/core/security/json_token.c \
+src/core/security/jwt_verifier.c \
 src/core/security/secure_endpoint.c \
 src/core/security/secure_transport_setup.c \
 src/core/security/security_connector.c \

tools/jenkins/run_jenkins.sh

diff --git a/tools/jenkins/run_jenkins.sh b/tools/jenkins/run_jenkins.sh
index f2091e2..88476b5 100755
--- a/tools/jenkins/run_jenkins.sh
+++ b/tools/jenkins/run_jenkins.sh
@@ -51,11 +51,8 @@
   # Make sure docker image has been built. Should be instantaneous if so.
   docker build -t $DOCKER_IMAGE_NAME tools/jenkins/grpc_jenkins_slave
 
-  if [ "$ghprbPullId" != "" ]
-  then
-    # if we are building a pull request, grab corresponding refs.
-    FETCH_PULL_REQUEST_CMD="&& git fetch $GIT_URL refs/pull/$ghprbPullId/merge refs/pull/$ghprbPullId/head"
-  fi
+  # Create a local branch so the child Docker script won't complain
+  git branch jenkins-docker
 
   # Make sure the CID file is gone.
   rm -f docker.cid
@@ -87,6 +84,11 @@
   /cygdrive/c/nuget/nuget.exe restore src/csharp/Grpc.sln
 
   python tools/run_tests/run_tests.py -t -l $language -x report.xml
+elif [ "$platform" == "macos" ]
+then
+  echo "building $language on MacOS"
+
+  ./tools/run_tests/run_tests.py -t -l $language -c $config -x report.xml
 else
   echo "Unknown platform $platform"
   exit 1

tools/run_tests/build_python.sh

diff --git a/tools/run_tests/build_python.sh b/tools/run_tests/build_python.sh
index d9b7644..ae0fb42 100755
--- a/tools/run_tests/build_python.sh
+++ b/tools/run_tests/build_python.sh
@@ -34,9 +34,32 @@
 cd $(dirname $0)/../..
 
 root=`pwd`
-rm -rf python2.7_virtual_environment
-virtualenv -p /usr/bin/python2.7 python2.7_virtual_environment
-source python2.7_virtual_environment/bin/activate
-pip install -r src/python/requirements.txt
-CFLAGS="-I$root/include -std=c89 -Werror" LDFLAGS=-L$root/libs/$CONFIG pip install src/python/src
-pip install src/python/interop
+
+make_virtualenv() {
+  virtualenv_name="python"$1"_virtual_environment"
+  if [ ! -d $virtualenv_name ]
+  then
+    # Build the entire virtual environment
+    virtualenv -p `which "python"$1` $virtualenv_name
+    source $virtualenv_name/bin/activate
+    pip install -r src/python/requirements.txt
+    CFLAGS="-I$root/include -std=c89" LDFLAGS=-L$root/libs/$CONFIG GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install src/python/src
+    pip install src/python/interop
+  else
+    source $virtualenv_name/bin/activate
+    # Uninstall and re-install the packages we care about. Don't use
+    # --force-reinstall or --ignore-installed to avoid propagating this
+    # unnecessarily to dependencies. Don't use --no-deps to avoid missing
+    # dependency upgrades.
+    (yes | pip uninstall grpcio) || true
+    (yes | pip uninstall interop) || true
+    (CFLAGS="-I$root/include -std=c89" LDFLAGS=-L$root/libs/$CONFIG GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install src/python/src) || (
+      # Fall back to rebuilding the entire environment
+      rm -rf $virtualenv_name
+      make_virtualenv $1
+    )
+    pip install src/python/interop
+  fi
+}
+
+make_virtualenv $1

tools/run_tests/build_ruby.sh

diff --git a/tools/run_tests/build_ruby.sh b/tools/run_tests/build_ruby.sh
index de96413..b6c4e32 100755
--- a/tools/run_tests/build_ruby.sh
+++ b/tools/run_tests/build_ruby.sh
@@ -31,7 +31,7 @@
 
 set -ex
 
-export CONFIG=${CONFIG:-opt}
+export GRPC_CONFIG=${CONFIG:-opt}
 
 # change to grpc's ruby directory
 cd $(dirname $0)/../../src/ruby

tools/run_tests/jobset.py

diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index 8694b8f..e513814 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -81,6 +81,7 @@
 
 _TAG_COLOR = {
     'FAILED': 'red',
+    'WARNING': 'yellow',
     'TIMEOUT': 'red',
     'PASSED': 'green',
     'START': 'gray',
@@ -95,7 +96,7 @@
     return
   message.old_tag = tag
   message.old_msg = msg
-  if platform.system() == 'Windows':
+  if platform.system() == 'Windows' or not sys.stdout.isatty():
     if explanatory_text:
       print explanatory_text
     print '%s: %s' % (tag, msg)

tools/run_tests/python_tests.json

diff --git a/tools/run_tests/python_tests.json b/tools/run_tests/python_tests.json
index 6c969d7..4da4c1b 100755
--- a/tools/run_tests/python_tests.json
+++ b/tools/run_tests/python_tests.json
@@ -1,56 +1,123 @@
 [
   {
-    "module": "grpc._adapter._c_test"
+    "module": "grpc._cython.cygrpc_test",
+    "pythonVersions": [
+      "2.7",
+      "3.4"
+    ]
   },
   {
-    "module": "grpc._adapter._low_test"
+    "module": "grpc._cython.adapter_low_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._intermediary_low_test"
+    "module": "grpc._adapter._c_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._links_test"
+    "module": "grpc._adapter._low_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._lonely_rear_link_test"
+    "module": "grpc._adapter._intermediary_low_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._blocking_invocation_inline_service_test"
+    "module": "grpc._adapter._links_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._event_invocation_synchronous_event_service_test"
+    "module": "grpc._adapter._lonely_rear_link_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc._adapter._future_invocation_asynchronous_event_service_test"
+    "module": "grpc._adapter._blocking_invocation_inline_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.early_adopter.implementations_test"
+    "module": "grpc._adapter._event_invocation_synchronous_event_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.base.implementations_test"
+    "module": "grpc._adapter._future_invocation_asynchronous_event_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.face.blocking_invocation_inline_service_test"
+    "module": "grpc.early_adopter.implementations_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.face.event_invocation_synchronous_event_service_test"
+    "module": "grpc.framework.base.implementations_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.face.future_invocation_asynchronous_event_service_test"
+    "module": "grpc.framework.face.blocking_invocation_inline_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.foundation._later_test"
+    "module": "grpc.framework.face.event_invocation_synchronous_event_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "grpc.framework.foundation._logging_pool_test"
+    "module": "grpc.framework.face.future_invocation_asynchronous_event_service_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "interop._insecure_interop_test"
+    "module": "grpc.framework.foundation._later_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "module": "interop._secure_interop_test"
+    "module": "grpc.framework.foundation._logging_pool_test",
+    "pythonVersions": [
+      "2.7"
+    ]
   },
   {
-    "file": "test/compiler/python_plugin_test.py"
+    "module": "interop._insecure_interop_test",
+    "pythonVersions": [
+      "2.7"
+    ]
+  },
+  {
+    "module": "interop._secure_interop_test",
+    "pythonVersions": [
+      "2.7"
+    ]
+  },
+  {
+    "file": "test/compiler/python_plugin_test.py",
+    "pythonVersions": [
+      "2.7"
+    ]
   }
 ]

tools/run_tests/run_csharp.bat

diff --git a/tools/run_tests/run_csharp.bat b/tools/run_tests/run_csharp.bat
index 17c622c..c861367 100644
--- a/tools/run_tests/run_csharp.bat
+++ b/tools/run_tests/run_csharp.bat
@@ -5,7 +5,10 @@
 @rem enter this directory
 cd /d %~dp0\..\..\src\csharp
 
-packages\NUnit.Runners.2.6.4\tools\nunit-console-x86.exe -labels "%1/bin/Debug/%1.dll" || goto :error
+@rem set UUID variable to a random GUID, we will use it to put TestResults.xml to a dedicated directory, so that parallel test runs don't collide
+for /F %%i in ('powershell -Command "[guid]::NewGuid().ToString()"') do (set UUID=%%i)
+
+packages\NUnit.Runners.2.6.4\tools\nunit-console-x86.exe -labels "%1/bin/Debug/%1.dll" -work test-results/%UUID% || goto :error
 
 endlocal
 

tools/run_tests/run_python.sh

diff --git a/tools/run_tests/run_python.sh b/tools/run_tests/run_python.sh
index cab08f9..4959c02 100755
--- a/tools/run_tests/run_python.sh
+++ b/tools/run_tests/run_python.sh
@@ -36,5 +36,5 @@
 root=`pwd`
 export LD_LIBRARY_PATH=$root/libs/$CONFIG
 export DYLD_LIBRARY_PATH=$root/libs/$CONFIG
-source python2.7_virtual_environment/bin/activate
-python2.7 -B $*
+source "python"$PYVER"_virtual_environment"/bin/activate
+"python"$PYVER -B $*

tools/run_tests/run_tests.py

diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index fd90613..1f44fc3 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -189,27 +189,55 @@
   def __init__(self):
     with open('tools/run_tests/python_tests.json') as f:
       self._tests = json.load(f)
+    self._build_python_versions = set([
+        python_version
+        for test in self._tests
+        for python_version in test['pythonVersions']])
+    self._has_python_versions = []
 
   def test_specs(self, config, travis):
-    modules = [config.job_spec(['tools/run_tests/run_python.sh', '-m',
-                                test['module']],
-                               None,
-                               environ=_FORCE_ENVIRON_FOR_WRAPPERS,
-                               shortname=test['module'])
-               for test in self._tests if 'module' in test]
-    files = [config.job_spec(['tools/run_tests/run_python.sh',
-                              test['file']],
-                             None,
-                             environ=_FORCE_ENVIRON_FOR_WRAPPERS,
-                             shortname=test['file'])
-            for test in self._tests if 'file' in test]
-    return files + modules
+    job_specifications = []
+    for test in self._tests:
+      command = None
+      short_name = None
+      if 'module' in test:
+        command = ['tools/run_tests/run_python.sh', '-m', test['module']]
+        short_name = test['module']
+      elif 'file' in test:
+        command = ['tools/run_tests/run_python.sh', test['file']]
+        short_name = test['file']
+      else:
+        raise ValueError('expected input to be a module or file to run '
+                         'unittests from')
+      for python_version in test['pythonVersions']:
+        if python_version in self._has_python_versions:
+          environment = dict(_FORCE_ENVIRON_FOR_WRAPPERS)
+          environment['PYVER'] = python_version
+          job_specifications.append(config.job_spec(
+              command, None, environ=environment, shortname=short_name))
+        else:
+          jobset.message(
+              'WARNING',
+              'Could not find Python {}; skipping test'.format(python_version),
+              '{}\n'.format(command), do_newline=True)
+    return job_specifications
 
   def make_targets(self):
     return ['static_c', 'grpc_python_plugin', 'shared_c']
 
   def build_steps(self):
-    return [['tools/run_tests/build_python.sh']]
+    commands = []
+    for python_version in self._build_python_versions:
+      try:
+        with open(os.devnull, 'w') as output:
+          subprocess.check_call(['which', 'python' + python_version],
+                                stdout=output, stderr=output)
+        commands.append(['tools/run_tests/build_python.sh', python_version])
+        self._has_python_versions.append(python_version)
+      except:
+        jobset.message('WARNING', 'Missing Python ' + python_version,
+                       do_newline=True)
+    return commands
 
   def supports_multi_config(self):
     return False

tools/run_tests/sources_and_headers.json

diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index b228aaa..1fc5c20 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -538,6 +538,20 @@
     ], 
     "headers": [], 
     "language": "c", 
+    "name": "grpc_jwt_verifier_test", 
+    "src": [
+      "test/core/security/jwt_verifier_test.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
     "name": "grpc_print_google_default_creds_token", 
     "src": [
       "test/core/security/print_google_default_creds_token.c"
@@ -580,6 +594,20 @@
     ], 
     "headers": [], 
     "language": "c", 
+    "name": "grpc_verify_jwt", 
+    "src": [
+      "test/core/security/verify_jwt.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
     "name": "hpack_parser_test", 
     "src": [
       "test/core/transport/chttp2/hpack_parser_test.c"
@@ -1458,6 +1486,19 @@
   {
     "deps": [
       "gpr", 
+      "grpc", 
+      "grpc++"
+    ], 
+    "headers": [], 
+    "language": "c++", 
+    "name": "secure_auth_context_test", 
+    "src": [
+      "test/cpp/common/secure_auth_context_test.cc"
+    ]
+  }, 
+  {
+    "deps": [
+      "gpr", 
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
@@ -8743,6 +8784,7 @@
       "src/core/security/base64.h", 
       "src/core/security/credentials.h", 
       "src/core/security/json_token.h", 
+      "src/core/security/jwt_verifier.h", 
       "src/core/security/secure_endpoint.h", 
       "src/core/security/secure_transport_setup.h", 
       "src/core/security/security_connector.h", 
@@ -8944,6 +8986,8 @@
       "src/core/security/google_default_credentials.c", 
       "src/core/security/json_token.c", 
       "src/core/security/json_token.h", 
+      "src/core/security/jwt_verifier.c", 
+      "src/core/security/jwt_verifier.h", 
       "src/core/security/secure_endpoint.c", 
       "src/core/security/secure_endpoint.h", 
       "src/core/security/secure_transport_setup.c", 
@@ -9444,6 +9488,7 @@
     "headers": [
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
+      "include/grpc++/auth_context.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9481,6 +9526,8 @@
       "include/grpc++/time.h", 
       "src/cpp/client/channel.h", 
       "src/cpp/client/secure_credentials.h", 
+      "src/cpp/common/create_auth_context.h", 
+      "src/cpp/common/secure_auth_context.h", 
       "src/cpp/server/secure_server_credentials.h", 
       "src/cpp/server/thread_pool.h"
     ], 
@@ -9489,6 +9536,7 @@
     "src": [
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
+      "include/grpc++/auth_context.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9538,7 +9586,11 @@
       "src/cpp/client/secure_credentials.h", 
       "src/cpp/common/call.cc", 
       "src/cpp/common/completion_queue.cc", 
+      "src/cpp/common/create_auth_context.h", 
       "src/cpp/common/rpc_method.cc", 
+      "src/cpp/common/secure_auth_context.cc", 
+      "src/cpp/common/secure_auth_context.h", 
+      "src/cpp/common/secure_create_auth_context.cc", 
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
@@ -9607,6 +9659,7 @@
     "headers": [
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
+      "include/grpc++/auth_context.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9643,6 +9696,7 @@
       "include/grpc++/thread_pool_interface.h", 
       "include/grpc++/time.h", 
       "src/cpp/client/channel.h", 
+      "src/cpp/common/create_auth_context.h", 
       "src/cpp/server/thread_pool.h"
     ], 
     "language": "c++", 
@@ -9650,6 +9704,7 @@
     "src": [
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
+      "include/grpc++/auth_context.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -9696,6 +9751,8 @@
       "src/cpp/client/internal_stub.cc", 
       "src/cpp/common/call.cc", 
       "src/cpp/common/completion_queue.cc", 
+      "src/cpp/common/create_auth_context.h", 
+      "src/cpp/common/insecure_create_auth_context.cc", 
       "src/cpp/common/rpc_method.cc", 
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 

tools/run_tests/tests.json

diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index b46004d..cc05870 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -314,6 +314,15 @@
   {
     "flaky": false, 
     "language": "c", 
+    "name": "grpc_jwt_verifier_test", 
+    "platforms": [
+      "windows", 
+      "posix"
+    ]
+  }, 
+  {
+    "flaky": false, 
+    "language": "c", 
     "name": "grpc_security_connector_test", 
     "platforms": [
       "windows", 
@@ -714,6 +723,15 @@
   {
     "flaky": false, 
     "language": "c++", 
+    "name": "secure_auth_context_test", 
+    "platforms": [
+      "windows", 
+      "posix"
+    ]
+  }, 
+  {
+    "flaky": false, 
+    "language": "c++", 
     "name": "server_crash_test", 
     "platforms": [
       "windows", 

vsprojects/Grpc.mak

diff --git a/vsprojects/Grpc.mak b/vsprojects/Grpc.mak
index 6a23cc1..d9b2255 100644
--- a/vsprojects/Grpc.mak
+++ b/vsprojects/Grpc.mak
@@ -57,7 +57,7 @@
 build_libs: build_gpr build_gpr_test_util build_grpc build_grpc_test_util build_grpc_test_util_unsecure build_grpc_unsecure Debug\end2end_fixture_chttp2_fake_security.lib Debug\end2end_fixture_chttp2_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_fullstack.lib Debug\end2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.lib Debug\end2end_fixture_chttp2_socket_pair.lib Debug\end2end_fixture_chttp2_socket_pair_one_byte_at_a_time.lib Debug\end2end_fixture_chttp2_socket_pair_with_grpc_trace.lib Debug\end2end_test_bad_hostname.lib Debug\end2end_test_cancel_after_accept.lib Debug\end2end_test_cancel_after_accept_and_writes_closed.lib Debug\end2end_test_cancel_after_invoke.lib Debug\end2end_test_cancel_before_invoke.lib Debug\end2end_test_cancel_in_a_vacuum.lib Debug\end2end_test_census_simple_request.lib Debug\end2end_test_disappearing_server.lib Debug\end2end_test_early_server_shutdown_finishes_inflight_calls.lib Debug\end2end_test_early_server_shutdown_finishes_tags.lib Debug\end2end_test_empty_batch.lib Debug\end2end_test_graceful_server_shutdown.lib Debug\end2end_test_invoke_large_request.lib Debug\end2end_test_max_concurrent_streams.lib Debug\end2end_test_max_message_length.lib Debug\end2end_test_no_op.lib Debug\end2end_test_ping_pong_streaming.lib Debug\end2end_test_registered_call.lib Debug\end2end_test_request_response_with_binary_metadata_and_payload.lib Debug\end2end_test_request_response_with_metadata_and_payload.lib Debug\end2end_test_request_response_with_payload.lib Debug\end2end_test_request_response_with_payload_and_call_creds.lib Debug\end2end_test_request_response_with_trailing_metadata_and_payload.lib Debug\end2end_test_request_with_flags.lib Debug\end2end_test_request_with_large_metadata.lib Debug\end2end_test_request_with_payload.lib Debug\end2end_test_server_finishes_request.lib Debug\end2end_test_simple_delayed_request.lib Debug\end2end_test_simple_request.lib Debug\end2end_test_simple_request_with_high_initial_sequence_number.lib Debug\end2end_certs.lib Debug\bad_client_test.lib 
 buildtests: buildtests_c buildtests_cxx
 
-buildtests_c: alarm_heap_test.exe alarm_list_test.exe alarm_test.exe alpn_test.exe bin_encoder_test.exe chttp2_status_conversion_test.exe chttp2_stream_encoder_test.exe chttp2_stream_map_test.exe fling_client.exe fling_server.exe gpr_cancellable_test.exe gpr_cmdline_test.exe gpr_env_test.exe gpr_file_test.exe gpr_histogram_test.exe gpr_host_port_test.exe gpr_log_test.exe gpr_slice_buffer_test.exe gpr_slice_test.exe gpr_string_test.exe gpr_sync_test.exe gpr_thd_test.exe gpr_time_test.exe gpr_tls_test.exe gpr_useful_test.exe grpc_auth_context_test.exe grpc_base64_test.exe grpc_byte_buffer_reader_test.exe grpc_channel_stack_test.exe grpc_completion_queue_test.exe grpc_credentials_test.exe grpc_json_token_test.exe grpc_security_connector_test.exe grpc_stream_op_test.exe hpack_parser_test.exe hpack_table_test.exe httpcli_format_request_test.exe httpcli_parser_test.exe json_rewrite.exe json_rewrite_test.exe json_test.exe lame_client_test.exe message_compress_test.exe multi_init_test.exe multiple_server_queues_test.exe murmur_hash_test.exe no_server_test.exe resolve_address_test.exe secure_endpoint_test.exe sockaddr_utils_test.exe time_averaged_stats_test.exe time_test.exe timeout_encoding_test.exe timers_test.exe transport_metadata_test.exe transport_security_test.exe uri_parser_test.exe chttp2_fake_security_bad_hostname_test.exe chttp2_fake_security_cancel_after_accept_test.exe chttp2_fake_security_cancel_after_accept_and_writes_closed_test.exe chttp2_fake_security_cancel_after_invoke_test.exe chttp2_fake_security_cancel_before_invoke_test.exe chttp2_fake_security_cancel_in_a_vacuum_test.exe chttp2_fake_security_census_simple_request_test.exe chttp2_fake_security_disappearing_server_test.exe chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fake_security_early_server_shutdown_finishes_tags_test.exe chttp2_fake_security_empty_batch_test.exe chttp2_fake_security_graceful_server_shutdown_test.exe chttp2_fake_security_invoke_large_request_test.exe chttp2_fake_security_max_concurrent_streams_test.exe chttp2_fake_security_max_message_length_test.exe chttp2_fake_security_no_op_test.exe chttp2_fake_security_ping_pong_streaming_test.exe chttp2_fake_security_registered_call_test.exe chttp2_fake_security_request_response_with_binary_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_payload_test.exe chttp2_fake_security_request_response_with_payload_and_call_creds_test.exe chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fake_security_request_with_flags_test.exe chttp2_fake_security_request_with_large_metadata_test.exe chttp2_fake_security_request_with_payload_test.exe chttp2_fake_security_server_finishes_request_test.exe chttp2_fake_security_simple_delayed_request_test.exe chttp2_fake_security_simple_request_test.exe chttp2_fake_security_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_test.exe chttp2_fullstack_cancel_after_accept_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_cancel_after_invoke_test.exe chttp2_fullstack_cancel_before_invoke_test.exe chttp2_fullstack_cancel_in_a_vacuum_test.exe chttp2_fullstack_census_simple_request_test.exe chttp2_fullstack_disappearing_server_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_empty_batch_test.exe chttp2_fullstack_graceful_server_shutdown_test.exe chttp2_fullstack_invoke_large_request_test.exe chttp2_fullstack_max_concurrent_streams_test.exe chttp2_fullstack_max_message_length_test.exe chttp2_fullstack_no_op_test.exe chttp2_fullstack_ping_pong_streaming_test.exe chttp2_fullstack_registered_call_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_payload_test.exe chttp2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_request_with_flags_test.exe chttp2_fullstack_request_with_large_metadata_test.exe chttp2_fullstack_request_with_payload_test.exe chttp2_fullstack_server_finishes_request_test.exe chttp2_fullstack_simple_delayed_request_test.exe chttp2_fullstack_simple_request_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_bad_hostname_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_census_simple_request_test.exe chttp2_simple_ssl_fullstack_disappearing_server_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_empty_batch_test.exe chttp2_simple_ssl_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_fullstack_max_message_length_test.exe chttp2_simple_ssl_fullstack_no_op_test.exe chttp2_simple_ssl_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_registered_call_test.exe chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_with_flags_test.exe chttp2_simple_ssl_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_request_with_payload_test.exe chttp2_simple_ssl_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_simple_request_test.exe chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test.exe chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test.exe chttp2_simple_ssl_with_oauth2_fullstack_no_op_test.exe chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_bad_hostname_test.exe chttp2_socket_pair_cancel_after_accept_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_cancel_after_invoke_test.exe chttp2_socket_pair_cancel_before_invoke_test.exe chttp2_socket_pair_cancel_in_a_vacuum_test.exe chttp2_socket_pair_census_simple_request_test.exe chttp2_socket_pair_disappearing_server_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_empty_batch_test.exe chttp2_socket_pair_graceful_server_shutdown_test.exe chttp2_socket_pair_invoke_large_request_test.exe chttp2_socket_pair_max_concurrent_streams_test.exe chttp2_socket_pair_max_message_length_test.exe chttp2_socket_pair_no_op_test.exe chttp2_socket_pair_ping_pong_streaming_test.exe chttp2_socket_pair_registered_call_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_payload_test.exe chttp2_socket_pair_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_request_with_flags_test.exe chttp2_socket_pair_request_with_large_metadata_test.exe chttp2_socket_pair_request_with_payload_test.exe chttp2_socket_pair_server_finishes_request_test.exe chttp2_socket_pair_simple_delayed_request_test.exe chttp2_socket_pair_simple_request_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_test.exe chttp2_socket_pair_with_grpc_trace_no_op_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_unsecure_test.exe chttp2_fullstack_cancel_after_accept_unsecure_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_census_simple_request_unsecure_test.exe chttp2_fullstack_disappearing_server_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_empty_batch_unsecure_test.exe chttp2_fullstack_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_invoke_large_request_unsecure_test.exe chttp2_fullstack_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_max_message_length_unsecure_test.exe chttp2_fullstack_no_op_unsecure_test.exe chttp2_fullstack_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_registered_call_unsecure_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_payload_unsecure_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_with_flags_unsecure_test.exe chttp2_fullstack_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_request_with_payload_unsecure_test.exe chttp2_fullstack_server_finishes_request_unsecure_test.exe chttp2_fullstack_simple_delayed_request_unsecure_test.exe chttp2_fullstack_simple_request_unsecure_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_bad_hostname_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_census_simple_request_unsecure_test.exe chttp2_socket_pair_disappearing_server_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_empty_batch_unsecure_test.exe chttp2_socket_pair_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_invoke_large_request_unsecure_test.exe chttp2_socket_pair_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_max_message_length_unsecure_test.exe chttp2_socket_pair_no_op_unsecure_test.exe chttp2_socket_pair_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_registered_call_unsecure_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_with_flags_unsecure_test.exe chttp2_socket_pair_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_request_with_payload_unsecure_test.exe chttp2_socket_pair_server_finishes_request_unsecure_test.exe chttp2_socket_pair_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_simple_request_unsecure_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test.exe connection_prefix_bad_client_test.exe initial_settings_frame_bad_client_test.exe 
+buildtests_c: alarm_heap_test.exe alarm_list_test.exe alarm_test.exe alpn_test.exe bin_encoder_test.exe chttp2_status_conversion_test.exe chttp2_stream_encoder_test.exe chttp2_stream_map_test.exe fling_client.exe fling_server.exe gpr_cancellable_test.exe gpr_cmdline_test.exe gpr_env_test.exe gpr_file_test.exe gpr_histogram_test.exe gpr_host_port_test.exe gpr_log_test.exe gpr_slice_buffer_test.exe gpr_slice_test.exe gpr_string_test.exe gpr_sync_test.exe gpr_thd_test.exe gpr_time_test.exe gpr_tls_test.exe gpr_useful_test.exe grpc_auth_context_test.exe grpc_base64_test.exe grpc_byte_buffer_reader_test.exe grpc_channel_stack_test.exe grpc_completion_queue_test.exe grpc_credentials_test.exe grpc_json_token_test.exe grpc_jwt_verifier_test.exe grpc_security_connector_test.exe grpc_stream_op_test.exe hpack_parser_test.exe hpack_table_test.exe httpcli_format_request_test.exe httpcli_parser_test.exe json_rewrite.exe json_rewrite_test.exe json_test.exe lame_client_test.exe message_compress_test.exe multi_init_test.exe multiple_server_queues_test.exe murmur_hash_test.exe no_server_test.exe resolve_address_test.exe secure_endpoint_test.exe sockaddr_utils_test.exe time_averaged_stats_test.exe time_test.exe timeout_encoding_test.exe timers_test.exe transport_metadata_test.exe transport_security_test.exe uri_parser_test.exe chttp2_fake_security_bad_hostname_test.exe chttp2_fake_security_cancel_after_accept_test.exe chttp2_fake_security_cancel_after_accept_and_writes_closed_test.exe chttp2_fake_security_cancel_after_invoke_test.exe chttp2_fake_security_cancel_before_invoke_test.exe chttp2_fake_security_cancel_in_a_vacuum_test.exe chttp2_fake_security_census_simple_request_test.exe chttp2_fake_security_disappearing_server_test.exe chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fake_security_early_server_shutdown_finishes_tags_test.exe chttp2_fake_security_empty_batch_test.exe chttp2_fake_security_graceful_server_shutdown_test.exe chttp2_fake_security_invoke_large_request_test.exe chttp2_fake_security_max_concurrent_streams_test.exe chttp2_fake_security_max_message_length_test.exe chttp2_fake_security_no_op_test.exe chttp2_fake_security_ping_pong_streaming_test.exe chttp2_fake_security_registered_call_test.exe chttp2_fake_security_request_response_with_binary_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_metadata_and_payload_test.exe chttp2_fake_security_request_response_with_payload_test.exe chttp2_fake_security_request_response_with_payload_and_call_creds_test.exe chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fake_security_request_with_flags_test.exe chttp2_fake_security_request_with_large_metadata_test.exe chttp2_fake_security_request_with_payload_test.exe chttp2_fake_security_server_finishes_request_test.exe chttp2_fake_security_simple_delayed_request_test.exe chttp2_fake_security_simple_request_test.exe chttp2_fake_security_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_test.exe chttp2_fullstack_cancel_after_accept_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_fullstack_cancel_after_invoke_test.exe chttp2_fullstack_cancel_before_invoke_test.exe chttp2_fullstack_cancel_in_a_vacuum_test.exe chttp2_fullstack_census_simple_request_test.exe chttp2_fullstack_disappearing_server_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_fullstack_empty_batch_test.exe chttp2_fullstack_graceful_server_shutdown_test.exe chttp2_fullstack_invoke_large_request_test.exe chttp2_fullstack_max_concurrent_streams_test.exe chttp2_fullstack_max_message_length_test.exe chttp2_fullstack_no_op_test.exe chttp2_fullstack_ping_pong_streaming_test.exe chttp2_fullstack_registered_call_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_fullstack_request_response_with_payload_test.exe chttp2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_fullstack_request_with_flags_test.exe chttp2_fullstack_request_with_large_metadata_test.exe chttp2_fullstack_request_with_payload_test.exe chttp2_fullstack_server_finishes_request_test.exe chttp2_fullstack_simple_delayed_request_test.exe chttp2_fullstack_simple_request_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_fullstack_bad_hostname_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_fullstack_census_simple_request_test.exe chttp2_simple_ssl_fullstack_disappearing_server_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_fullstack_empty_batch_test.exe chttp2_simple_ssl_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_fullstack_max_message_length_test.exe chttp2_simple_ssl_fullstack_no_op_test.exe chttp2_simple_ssl_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_fullstack_registered_call_test.exe chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_fullstack_request_with_flags_test.exe chttp2_simple_ssl_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_fullstack_request_with_payload_test.exe chttp2_simple_ssl_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_fullstack_simple_request_test.exe chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test.exe chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test.exe chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test.exe chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test.exe chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test.exe chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test.exe chttp2_simple_ssl_with_oauth2_fullstack_no_op_test.exe chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test.exe chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test.exe chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test.exe chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test.exe chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_bad_hostname_test.exe chttp2_socket_pair_cancel_after_accept_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_cancel_after_invoke_test.exe chttp2_socket_pair_cancel_before_invoke_test.exe chttp2_socket_pair_cancel_in_a_vacuum_test.exe chttp2_socket_pair_census_simple_request_test.exe chttp2_socket_pair_disappearing_server_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_empty_batch_test.exe chttp2_socket_pair_graceful_server_shutdown_test.exe chttp2_socket_pair_invoke_large_request_test.exe chttp2_socket_pair_max_concurrent_streams_test.exe chttp2_socket_pair_max_message_length_test.exe chttp2_socket_pair_no_op_test.exe chttp2_socket_pair_ping_pong_streaming_test.exe chttp2_socket_pair_registered_call_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_request_response_with_payload_test.exe chttp2_socket_pair_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_request_with_flags_test.exe chttp2_socket_pair_request_with_large_metadata_test.exe chttp2_socket_pair_request_with_payload_test.exe chttp2_socket_pair_server_finishes_request_test.exe chttp2_socket_pair_simple_delayed_request_test.exe chttp2_socket_pair_simple_request_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_test.exe chttp2_socket_pair_with_grpc_trace_no_op_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test.exe chttp2_fullstack_bad_hostname_unsecure_test.exe chttp2_fullstack_cancel_after_accept_unsecure_test.exe chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_fullstack_cancel_after_invoke_unsecure_test.exe chttp2_fullstack_cancel_before_invoke_unsecure_test.exe chttp2_fullstack_cancel_in_a_vacuum_unsecure_test.exe chttp2_fullstack_census_simple_request_unsecure_test.exe chttp2_fullstack_disappearing_server_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_fullstack_empty_batch_unsecure_test.exe chttp2_fullstack_graceful_server_shutdown_unsecure_test.exe chttp2_fullstack_invoke_large_request_unsecure_test.exe chttp2_fullstack_max_concurrent_streams_unsecure_test.exe chttp2_fullstack_max_message_length_unsecure_test.exe chttp2_fullstack_no_op_unsecure_test.exe chttp2_fullstack_ping_pong_streaming_unsecure_test.exe chttp2_fullstack_registered_call_unsecure_test.exe chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_response_with_payload_unsecure_test.exe chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_fullstack_request_with_flags_unsecure_test.exe chttp2_fullstack_request_with_large_metadata_unsecure_test.exe chttp2_fullstack_request_with_payload_unsecure_test.exe chttp2_fullstack_server_finishes_request_unsecure_test.exe chttp2_fullstack_simple_delayed_request_unsecure_test.exe chttp2_fullstack_simple_request_unsecure_test.exe chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_bad_hostname_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_census_simple_request_unsecure_test.exe chttp2_socket_pair_disappearing_server_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_empty_batch_unsecure_test.exe chttp2_socket_pair_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_invoke_large_request_unsecure_test.exe chttp2_socket_pair_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_max_message_length_unsecure_test.exe chttp2_socket_pair_no_op_unsecure_test.exe chttp2_socket_pair_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_registered_call_unsecure_test.exe chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_request_with_flags_unsecure_test.exe chttp2_socket_pair_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_request_with_payload_unsecure_test.exe chttp2_socket_pair_server_finishes_request_unsecure_test.exe chttp2_socket_pair_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_simple_request_unsecure_test.exe chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test.exe chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test.exe chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test.exe connection_prefix_bad_client_test.exe initial_settings_frame_bad_client_test.exe 
 	echo All tests built.
 
 buildtests_cxx: interop_client.exe interop_server.exe 
@@ -308,6 +308,13 @@
 grpc_json_token_test: grpc_json_token_test.exe
 	echo Running grpc_json_token_test
 	$(OUT_DIR)\grpc_json_token_test.exe
+grpc_jwt_verifier_test.exe: build_libs $(OUT_DIR)
+	echo Building grpc_jwt_verifier_test
+	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\security\jwt_verifier_test.c 
+	$(LINK) $(LFLAGS) /OUT:"$(OUT_DIR)\grpc_jwt_verifier_test.exe" Debug\grpc_test_util.lib Debug\grpc.lib Debug\gpr_test_util.lib Debug\gpr.lib $(LIBS) $(OUT_DIR)\jwt_verifier_test.obj 
+grpc_jwt_verifier_test: grpc_jwt_verifier_test.exe
+	echo Running grpc_jwt_verifier_test
+	$(OUT_DIR)\grpc_jwt_verifier_test.exe
 grpc_print_google_default_creds_token.exe: build_libs $(OUT_DIR)
 	echo Building grpc_print_google_default_creds_token
 	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\security\print_google_default_creds_token.c 
@@ -329,6 +336,13 @@
 grpc_stream_op_test: grpc_stream_op_test.exe
 	echo Running grpc_stream_op_test
 	$(OUT_DIR)\grpc_stream_op_test.exe
+grpc_verify_jwt.exe: build_libs $(OUT_DIR)
+	echo Building grpc_verify_jwt
+	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\security\verify_jwt.c 
+	$(LINK) $(LFLAGS) /OUT:"$(OUT_DIR)\grpc_verify_jwt.exe" Debug\grpc_test_util.lib Debug\grpc.lib Debug\gpr_test_util.lib Debug\gpr.lib $(LIBS) $(OUT_DIR)\verify_jwt.obj 
+grpc_verify_jwt: grpc_verify_jwt.exe
+	echo Running grpc_verify_jwt
+	$(OUT_DIR)\grpc_verify_jwt.exe
 hpack_parser_test.exe: build_libs $(OUT_DIR)
 	echo Building hpack_parser_test
 	$(CC) $(CFLAGS) /Fo:$(OUT_DIR)\ $(REPO_ROOT)\test\core\transport\chttp2\hpack_parser_test.c 

vsprojects/grpc++/grpc++.vcxproj

diff --git a/vsprojects/grpc++/grpc++.vcxproj b/vsprojects/grpc++/grpc++.vcxproj
index f69d50f..c1a3265 100644
--- a/vsprojects/grpc++/grpc++.vcxproj
+++ b/vsprojects/grpc++/grpc++.vcxproj
@@ -148,6 +148,7 @@
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc++\async_generic_service.h" />
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h" />
+    <ClInclude Include="..\..\include\grpc++\auth_context.h" />
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h" />
     <ClInclude Include="..\..\include\grpc++\channel_arguments.h" />
     <ClInclude Include="..\..\include\grpc++\channel_interface.h" />
@@ -186,8 +187,10 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\cpp\client\secure_credentials.h" />
+    <ClInclude Include="..\..\src\cpp\common\secure_auth_context.h" />
     <ClInclude Include="..\..\src\cpp\server\secure_server_credentials.h" />
     <ClInclude Include="..\..\src\cpp\client\channel.h" />
+    <ClInclude Include="..\..\src\cpp\common\create_auth_context.h" />
     <ClInclude Include="..\..\src\cpp\server\thread_pool.h" />
   </ItemGroup>
   <ItemGroup>
@@ -195,6 +198,10 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\secure_credentials.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\secure_auth_context.cc">
+    </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\secure_create_auth_context.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\secure_server_credentials.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\channel.cc">

vsprojects/grpc++/grpc++.vcxproj.filters

diff --git a/vsprojects/grpc++/grpc++.vcxproj.filters b/vsprojects/grpc++/grpc++.vcxproj.filters
index aa4b50e..e63c77a 100644
--- a/vsprojects/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/grpc++/grpc++.vcxproj.filters
@@ -7,6 +7,12 @@
     <ClCompile Include="..\..\src\cpp\client\secure_credentials.cc">
       <Filter>src\cpp\client</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\secure_auth_context.cc">
+      <Filter>src\cpp\common</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\cpp\common\secure_create_auth_context.cc">
+      <Filter>src\cpp\common</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\secure_server_credentials.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -90,6 +96,9 @@
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\auth_context.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -200,12 +209,18 @@
     <ClInclude Include="..\..\src\cpp\client\secure_credentials.h">
       <Filter>src\cpp\client</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\cpp\common\secure_auth_context.h">
+      <Filter>src\cpp\common</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\cpp\server\secure_server_credentials.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\cpp\client\channel.h">
       <Filter>src\cpp\client</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\cpp\common\create_auth_context.h">
+      <Filter>src\cpp\common</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\cpp\server\thread_pool.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>

vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj

diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
index 639f904..944e7e0 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -148,6 +148,7 @@
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc++\async_generic_service.h" />
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h" />
+    <ClInclude Include="..\..\include\grpc++\auth_context.h" />
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h" />
     <ClInclude Include="..\..\include\grpc++\channel_arguments.h" />
     <ClInclude Include="..\..\include\grpc++\channel_interface.h" />
@@ -186,9 +187,12 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\cpp\client\channel.h" />
+    <ClInclude Include="..\..\src\cpp\common\create_auth_context.h" />
     <ClInclude Include="..\..\src\cpp\server\thread_pool.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\src\cpp\common\insecure_create_auth_context.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\channel.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\channel_arguments.cc">

vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters

diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index 974dc3e..73b0a5d 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
+    <ClCompile Include="..\..\src\cpp\common\insecure_create_auth_context.cc">
+      <Filter>src\cpp\common</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\client\channel.cc">
       <Filter>src\cpp\client</Filter>
     </ClCompile>
@@ -81,6 +84,9 @@
     <ClInclude Include="..\..\include\grpc++\async_unary_call.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\auth_context.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\byte_buffer.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
@@ -191,6 +197,9 @@
     <ClInclude Include="..\..\src\cpp\client\channel.h">
       <Filter>src\cpp\client</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\cpp\common\create_auth_context.h">
+      <Filter>src\cpp\common</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\cpp\server\thread_pool.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>

vsprojects/grpc/grpc.vcxproj

diff --git a/vsprojects/grpc/grpc.vcxproj b/vsprojects/grpc/grpc.vcxproj
index 14ddf95..865e76e 100644
--- a/vsprojects/grpc/grpc.vcxproj
+++ b/vsprojects/grpc/grpc.vcxproj
@@ -164,6 +164,7 @@
     <ClInclude Include="..\..\src\core\security\base64.h" />
     <ClInclude Include="..\..\src\core\security\credentials.h" />
     <ClInclude Include="..\..\src\core\security\json_token.h" />
+    <ClInclude Include="..\..\src\core\security\jwt_verifier.h" />
     <ClInclude Include="..\..\src\core\security\secure_endpoint.h" />
     <ClInclude Include="..\..\src\core\security\secure_transport_setup.h" />
     <ClInclude Include="..\..\src\core\security\security_connector.h" />
@@ -294,6 +295,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\security\json_token.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\security\jwt_verifier.c">
+    </ClCompile>
     <ClCompile Include="..\..\src\core\security\secure_endpoint.c">
     </ClCompile>
     <ClCompile Include="..\..\src\core\security\secure_transport_setup.c">

vsprojects/grpc/grpc.vcxproj.filters

diff --git a/vsprojects/grpc/grpc.vcxproj.filters b/vsprojects/grpc/grpc.vcxproj.filters
index 591fe1b..f560fef 100644
--- a/vsprojects/grpc/grpc.vcxproj.filters
+++ b/vsprojects/grpc/grpc.vcxproj.filters
@@ -37,6 +37,9 @@
     <ClCompile Include="..\..\src\core\security\json_token.c">
       <Filter>src\core\security</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\security\jwt_verifier.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\core\security\secure_endpoint.c">
       <Filter>src\core\security</Filter>
     </ClCompile>
@@ -446,6 +449,9 @@
     <ClInclude Include="..\..\src\core\security\json_token.h">
       <Filter>src\core\security</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\core\security\jwt_verifier.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\core\security\secure_endpoint.h">
       <Filter>src\core\security</Filter>
     </ClInclude>