Merge pull request #9765 from dgquintas/disable_lb_policies_test

Temporarily disable lb policies test
diff --git a/BUILD b/BUILD
index 551fa94..9fee908 100644
--- a/BUILD
+++ b/BUILD
@@ -1133,6 +1133,10 @@
         "src/cpp/server/async_generic_service.cc",
         "src/cpp/server/create_default_thread_pool.cc",
         "src/cpp/server/dynamic_thread_pool.cc",
+        "src/cpp/server/health/default_health_check_service.cc",
+        "src/cpp/server/health/health.pb.c",
+        "src/cpp/server/health/health_check_service.cc",
+        "src/cpp/server/health/health_check_service_server_builder_option.cc",
         "src/cpp/server/server_builder.cc",
         "src/cpp/server/server_cc.cc",
         "src/cpp/server/server_context.cc",
@@ -1149,6 +1153,8 @@
         "src/cpp/client/create_channel_internal.h",
         "src/cpp/common/channel_filter.h",
         "src/cpp/server/dynamic_thread_pool.h",
+        "src/cpp/server/health/default_health_check_service.h",
+        "src/cpp/server/health/health.pb.h",
         "src/cpp/server/thread_pool_interface.h",
         "src/cpp/thread_manager/thread_manager.h",
     ],
@@ -1160,9 +1166,11 @@
         "include/grpc++/completion_queue.h",
         "include/grpc++/create_channel.h",
         "include/grpc++/create_channel_posix.h",
+        "include/grpc++/ext/health_check_service_server_builder_option.h",
         "include/grpc++/generic/async_generic_service.h",
         "include/grpc++/generic/generic_stub.h",
         "include/grpc++/grpc++.h",
+        "include/grpc++/health_check_service_interface.h",
         "include/grpc++/impl/call.h",
         "include/grpc++/impl/client_unary_call.h",
         "include/grpc++/impl/codegen/core_codegen.h",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a1434c8..aa09707 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -597,6 +597,7 @@
 add_dependencies(buildtests_cxx grpc_tool_test)
 add_dependencies(buildtests_cxx grpclb_api_test)
 add_dependencies(buildtests_cxx grpclb_test)
+add_dependencies(buildtests_cxx health_service_end2end_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx http2_client)
 endif()
@@ -2061,6 +2062,10 @@
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc
+  src/cpp/server/health/default_health_check_service.cc
+  src/cpp/server/health/health.pb.c
+  src/cpp/server/health/health_check_service.cc
+  src/cpp/server/health/health_check_service_server_builder_option.cc
   src/cpp/server/server_builder.cc
   src/cpp/server/server_cc.cc
   src/cpp/server/server_context.cc
@@ -2114,9 +2119,11 @@
   include/grpc++/completion_queue.h
   include/grpc++/create_channel.h
   include/grpc++/create_channel_posix.h
+  include/grpc++/ext/health_check_service_server_builder_option.h
   include/grpc++/generic/async_generic_service.h
   include/grpc++/generic/generic_stub.h
   include/grpc++/grpc++.h
+  include/grpc++/health_check_service_interface.h
   include/grpc++/impl/call.h
   include/grpc++/impl/client_unary_call.h
   include/grpc++/impl/codegen/core_codegen.h
@@ -2241,6 +2248,10 @@
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc
+  src/cpp/server/health/default_health_check_service.cc
+  src/cpp/server/health/health.pb.c
+  src/cpp/server/health/health_check_service.cc
+  src/cpp/server/health/health_check_service_server_builder_option.cc
   src/cpp/server/server_builder.cc
   src/cpp/server/server_cc.cc
   src/cpp/server/server_context.cc
@@ -2478,9 +2489,11 @@
   include/grpc++/completion_queue.h
   include/grpc++/create_channel.h
   include/grpc++/create_channel_posix.h
+  include/grpc++/ext/health_check_service_server_builder_option.h
   include/grpc++/generic/async_generic_service.h
   include/grpc++/generic/generic_stub.h
   include/grpc++/grpc++.h
+  include/grpc++/health_check_service_interface.h
   include/grpc++/impl/call.h
   include/grpc++/impl/client_unary_call.h
   include/grpc++/impl/codegen/core_codegen.h
@@ -2751,6 +2764,10 @@
 if (gRPC_BUILD_TESTS)
 
 add_library(grpc++_test_util
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.grpc.pb.h
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.pb.cc
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.grpc.pb.cc
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/echo_messages.pb.h
@@ -2784,6 +2801,9 @@
 endif()
 
 protobuf_generate_grpc_cpp(
+  src/proto/grpc/health/v1/health.proto
+)
+protobuf_generate_grpc_cpp(
   src/proto/grpc/testing/echo_messages.proto
 )
 protobuf_generate_grpc_cpp(
@@ -2899,6 +2919,10 @@
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc
+  src/cpp/server/health/default_health_check_service.cc
+  src/cpp/server/health/health.pb.c
+  src/cpp/server/health/health_check_service.cc
+  src/cpp/server/health/health_check_service_server_builder_option.cc
   src/cpp/server/server_builder.cc
   src/cpp/server/server_cc.cc
   src/cpp/server/server_context.cc
@@ -2952,9 +2976,11 @@
   include/grpc++/completion_queue.h
   include/grpc++/create_channel.h
   include/grpc++/create_channel_posix.h
+  include/grpc++/ext/health_check_service_server_builder_option.h
   include/grpc++/generic/async_generic_service.h
   include/grpc++/generic/generic_stub.h
   include/grpc++/grpc++.h
+  include/grpc++/health_check_service_interface.h
   include/grpc++/impl/call.h
   include/grpc++/impl/client_unary_call.h
   include/grpc++/impl/codegen/core_codegen.h
@@ -8506,6 +8532,41 @@
 
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
+
+add_executable(health_service_end2end_test
+  test/cpp/end2end/health_service_end2end_test.cc
+  third_party/googletest/src/gtest-all.cc
+)
+
+
+target_include_directories(health_service_end2end_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/include
+  PRIVATE third_party/googletest
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(health_service_end2end_test
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 
 add_executable(http2_client
diff --git a/Makefile b/Makefile
index 9cffe04..8f92816 100644
--- a/Makefile
+++ b/Makefile
@@ -1072,6 +1072,7 @@
 grpc_tool_test: $(BINDIR)/$(CONFIG)/grpc_tool_test
 grpclb_api_test: $(BINDIR)/$(CONFIG)/grpclb_api_test
 grpclb_test: $(BINDIR)/$(CONFIG)/grpclb_test
+health_service_end2end_test: $(BINDIR)/$(CONFIG)/health_service_end2end_test
 http2_client: $(BINDIR)/$(CONFIG)/http2_client
 hybrid_end2end_test: $(BINDIR)/$(CONFIG)/hybrid_end2end_test
 interop_client: $(BINDIR)/$(CONFIG)/interop_client
@@ -1472,6 +1473,7 @@
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/health_service_end2end_test \
   $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
@@ -1577,6 +1579,7 @@
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/health_service_end2end_test \
   $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
@@ -1911,6 +1914,8 @@
 	$(Q) $(BINDIR)/$(CONFIG)/grpclb_api_test || ( echo test grpclb_api_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpclb_test"
 	$(Q) $(BINDIR)/$(CONFIG)/grpclb_test || ( echo test grpclb_test failed ; exit 1 )
+	$(E) "[RUN]     Testing health_service_end2end_test"
+	$(Q) $(BINDIR)/$(CONFIG)/health_service_end2end_test || ( echo test health_service_end2end_test failed ; exit 1 )
 	$(E) "[RUN]     Testing interop_test"
 	$(Q) $(BINDIR)/$(CONFIG)/interop_test || ( echo test interop_test failed ; exit 1 )
 	$(E) "[RUN]     Testing mock_test"
@@ -2060,6 +2065,21 @@
 	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 ifeq ($(NO_PROTOC),true)
+$(GENDIR)/src/proto/grpc/health/v1/health.pb.cc: protoc_dep_error
+$(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc: protoc_dep_error
+else
+$(GENDIR)/src/proto/grpc/health/v1/health.pb.cc: src/proto/grpc/health/v1/health.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[PROTOC]  Generating protobuf CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --cpp_out=$(GENDIR) $<
+
+$(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc: src/proto/grpc/health/v1/health.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
+endif
+
+ifeq ($(NO_PROTOC),true)
 $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc: protoc_dep_error
 $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc: protoc_dep_error
 else
@@ -3864,6 +3884,10 @@
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
     src/cpp/server/dynamic_thread_pool.cc \
+    src/cpp/server/health/default_health_check_service.cc \
+    src/cpp/server/health/health.pb.c \
+    src/cpp/server/health/health_check_service.cc \
+    src/cpp/server/health/health_check_service_server_builder_option.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_cc.cc \
     src/cpp/server/server_context.cc \
@@ -3884,9 +3908,11 @@
     include/grpc++/completion_queue.h \
     include/grpc++/create_channel.h \
     include/grpc++/create_channel_posix.h \
+    include/grpc++/ext/health_check_service_server_builder_option.h \
     include/grpc++/generic/async_generic_service.h \
     include/grpc++/generic/generic_stub.h \
     include/grpc++/grpc++.h \
+    include/grpc++/health_check_service_interface.h \
     include/grpc++/impl/call.h \
     include/grpc++/impl/client_unary_call.h \
     include/grpc++/impl/codegen/core_codegen.h \
@@ -4057,6 +4083,10 @@
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
     src/cpp/server/dynamic_thread_pool.cc \
+    src/cpp/server/health/default_health_check_service.cc \
+    src/cpp/server/health/health.pb.c \
+    src/cpp/server/health/health_check_service.cc \
+    src/cpp/server/health/health_check_service_server_builder_option.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_cc.cc \
     src/cpp/server/server_context.cc \
@@ -4260,9 +4290,11 @@
     include/grpc++/completion_queue.h \
     include/grpc++/create_channel.h \
     include/grpc++/create_channel_posix.h \
+    include/grpc++/ext/health_check_service_server_builder_option.h \
     include/grpc++/generic/async_generic_service.h \
     include/grpc++/generic/generic_stub.h \
     include/grpc++/grpc++.h \
+    include/grpc++/health_check_service_interface.h \
     include/grpc++/impl/call.h \
     include/grpc++/impl/client_unary_call.h \
     include/grpc++/impl/codegen/core_codegen.h \
@@ -4595,6 +4627,7 @@
 
 
 LIBGRPC++_TEST_UTIL_SRC = \
+    $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc \
@@ -4703,13 +4736,13 @@
 -include $(LIBGRPC++_TEST_UTIL_OBJS:.o=.dep)
 endif
 endif
-$(OBJDIR)/$(CONFIG)/test/cpp/end2end/test_service_impl.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/byte_buffer_proto_helper.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/string_ref_helper.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/subprocess.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/test_credentials_provider.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o: $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/end2end/test_service_impl.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/byte_buffer_proto_helper.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/string_ref_helper.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/subprocess.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/test_credentials_provider.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
 
 
 LIBGRPC++_UNSECURE_SRC = \
@@ -4733,6 +4766,10 @@
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
     src/cpp/server/dynamic_thread_pool.cc \
+    src/cpp/server/health/default_health_check_service.cc \
+    src/cpp/server/health/health.pb.c \
+    src/cpp/server/health/health_check_service.cc \
+    src/cpp/server/health/health_check_service_server_builder_option.cc \
     src/cpp/server/server_builder.cc \
     src/cpp/server/server_cc.cc \
     src/cpp/server/server_context.cc \
@@ -4753,9 +4790,11 @@
     include/grpc++/completion_queue.h \
     include/grpc++/create_channel.h \
     include/grpc++/create_channel_posix.h \
+    include/grpc++/ext/health_check_service_server_builder_option.h \
     include/grpc++/generic/async_generic_service.h \
     include/grpc++/generic/generic_stub.h \
     include/grpc++/grpc++.h \
+    include/grpc++/health_check_service_interface.h \
     include/grpc++/impl/call.h \
     include/grpc++/impl/client_unary_call.h \
     include/grpc++/impl/codegen/core_codegen.h \
@@ -13568,6 +13607,49 @@
 $(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_test.o: $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc
 
 
+HEALTH_SERVICE_END2END_TEST_SRC = \
+    test/cpp/end2end/health_service_end2end_test.cc \
+
+HEALTH_SERVICE_END2END_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(HEALTH_SERVICE_END2END_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/health_service_end2end_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)/$(CONFIG)/health_service_end2end_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/health_service_end2end_test: $(PROTOBUF_DEP) $(HEALTH_SERVICE_END2END_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(HEALTH_SERVICE_END2END_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/health_service_end2end_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/end2end/health_service_end2end_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_health_service_end2end_test: $(HEALTH_SERVICE_END2END_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(HEALTH_SERVICE_END2END_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 ifeq ($(NO_SECURE),true)
 
 # You can't build secure targets if you don't have OpenSSL.
diff --git a/WORKSPACE b/WORKSPACE
index 9883109..4f90f06 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -28,6 +28,11 @@
     actual = "@submodule_protobuf//:protoc",
 )
 
+bind(
+    name = "gtest",
+    actual = "@submodule_gtest//:gtest",
+)
+
 new_local_repository(
     name = "submodule_boringssl",
     path = "third_party/boringssl-with-bazel",
@@ -45,3 +50,9 @@
     path = "third_party/protobuf",
     build_file = "third_party/protobuf/BUILD",
 )
+
+new_local_repository(
+    name = "submodule_gtest",
+    path = "third_party/googletest",
+    build_file = "third_party/gtest.BUILD",
+)
diff --git a/build.yaml b/build.yaml
index ee4d0cb..141526c 100644
--- a/build.yaml
+++ b/build.yaml
@@ -769,9 +769,11 @@
   - include/grpc++/completion_queue.h
   - include/grpc++/create_channel.h
   - include/grpc++/create_channel_posix.h
+  - include/grpc++/ext/health_check_service_server_builder_option.h
   - include/grpc++/generic/async_generic_service.h
   - include/grpc++/generic/generic_stub.h
   - include/grpc++/grpc++.h
+  - include/grpc++/health_check_service_interface.h
   - include/grpc++/impl/call.h
   - include/grpc++/impl/client_unary_call.h
   - include/grpc++/impl/codegen/core_codegen.h
@@ -809,6 +811,8 @@
   - src/cpp/client/create_channel_internal.h
   - src/cpp/common/channel_filter.h
   - src/cpp/server/dynamic_thread_pool.h
+  - src/cpp/server/health/default_health_check_service.h
+  - src/cpp/server/health/health.pb.h
   - src/cpp/server/thread_pool_interface.h
   - src/cpp/thread_manager/thread_manager.h
   src:
@@ -829,6 +833,10 @@
   - src/cpp/server/async_generic_service.cc
   - src/cpp/server/create_default_thread_pool.cc
   - src/cpp/server/dynamic_thread_pool.cc
+  - src/cpp/server/health/default_health_check_service.cc
+  - src/cpp/server/health/health.pb.c
+  - src/cpp/server/health/health_check_service.cc
+  - src/cpp/server/health/health_check_service_server_builder_option.cc
   - src/cpp/server/server_builder.cc
   - src/cpp/server/server_cc.cc
   - src/cpp/server/server_context.cc
@@ -1169,6 +1177,7 @@
   - test/cpp/util/subprocess.h
   - test/cpp/util/test_credentials_provider.h
   src:
+  - src/proto/grpc/health/v1/health.proto
   - src/proto/grpc/testing/echo_messages.proto
   - src/proto/grpc/testing/echo.proto
   - src/proto/grpc/testing/duplicate/echo_duplicate.proto
@@ -3349,6 +3358,19 @@
   - grpc
   - gpr_test_util
   - gpr
+- name: health_service_end2end_test
+  gtest: true
+  build: test
+  language: c++
+  src:
+  - test/cpp/end2end/health_service_end2end_test.cc
+  deps:
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: http2_client
   build: test
   run: false
diff --git a/include/grpc++/ext/health_check_service_server_builder_option.h b/include/grpc++/ext/health_check_service_server_builder_option.h
new file mode 100644
index 0000000..4861daa
--- /dev/null
+++ b/include/grpc++/ext/health_check_service_server_builder_option.h
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
+#define GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
+
+#include <memory>
+
+#include <grpc++/health_check_service_interface.h>
+#include <grpc++/impl/server_builder_option.h>
+#include <grpc++/support/config.h>
+
+namespace grpc {
+
+class HealthCheckServiceServerBuilderOption : public ServerBuilderOption {
+ public:
+  // The ownership of hc will be taken and transferred to the grpc server.
+  // To explicitly disable default service, pass in a nullptr.
+  explicit HealthCheckServiceServerBuilderOption(
+      std::unique_ptr<HealthCheckServiceInterface> hc);
+  ~HealthCheckServiceServerBuilderOption() override {}
+  void UpdateArguments(ChannelArguments* args) override;
+  void UpdatePlugins(
+      std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) override;
+
+ private:
+  std::unique_ptr<HealthCheckServiceInterface> hc_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
diff --git a/include/grpc++/health_check_service_interface.h b/include/grpc++/health_check_service_interface.h
new file mode 100644
index 0000000..0eed702
--- /dev/null
+++ b/include/grpc++/health_check_service_interface.h
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
+#define GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
+
+#include <grpc++/support/config.h>
+
+namespace grpc {
+
+const char kHealthCheckServiceInterfaceArg[] =
+    "grpc.health_check_service_interface";
+
+// The gRPC server uses this interface to expose the health checking service
+// without depending on protobuf.
+class HealthCheckServiceInterface {
+ public:
+  virtual ~HealthCheckServiceInterface() {}
+
+  // Set or change the serving status of the given service_name.
+  virtual void SetServingStatus(const grpc::string& service_name,
+                                bool serving) = 0;
+  // Apply to all registered service names.
+  virtual void SetServingStatus(bool serving) = 0;
+};
+
+// Enable/disable the default health checking service. This applies to all C++
+// servers created afterwards. For each server, user can override the default
+// with a HealthCheckServiceServerBuilderOption.
+// NOT thread safe.
+void EnableDefaultHealthCheckService(bool enable);
+
+// NOT thread safe.
+bool DefaultHealthCheckServiceEnabled();
+
+}  // namespace grpc
+
+#endif  // GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
diff --git a/include/grpc++/server.h b/include/grpc++/server.h
index 002f252..3e54405 100644
--- a/include/grpc++/server.h
+++ b/include/grpc++/server.h
@@ -55,12 +55,10 @@
 
 namespace grpc {
 
-class GenericServerContext;
 class AsyncGenericService;
-class ServerAsyncStreamingInterface;
+class HealthCheckServiceInterface;
 class ServerContext;
 class ServerInitializer;
-class ThreadPoolInterface;
 
 /// Models a gRPC server.
 ///
@@ -99,6 +97,11 @@
   // Returns a \em raw pointer to the underlying grpc_server instance.
   grpc_server* c_server();
 
+  /// Returns the health check service.
+  HealthCheckServiceInterface* GetHealthCheckService() const {
+    return health_check_service_.get();
+  }
+
  private:
   friend class AsyncGenericService;
   friend class ServerBuilder;
@@ -216,6 +219,9 @@
   grpc_server* server_;
 
   std::unique_ptr<ServerInitializer> server_initializer_;
+
+  std::unique_ptr<HealthCheckServiceInterface> health_check_service_;
+  bool health_check_service_disabled_;
 };
 
 }  // namespace grpc
diff --git a/src/cpp/server/health/default_health_check_service.cc b/src/cpp/server/health/default_health_check_service.cc
new file mode 100644
index 0000000..46def70
--- /dev/null
+++ b/src/cpp/server/health/default_health_check_service.cc
@@ -0,0 +1,166 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <memory>
+#include <mutex>
+
+#include <grpc++/impl/codegen/method_handler_impl.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/cpp/server/health/default_health_check_service.h"
+#include "src/cpp/server/health/health.pb.h"
+#include "third_party/nanopb/pb_decode.h"
+#include "third_party/nanopb/pb_encode.h"
+
+namespace grpc {
+namespace {
+const char kHealthCheckMethodName[] = "/grpc.health.v1.Health/Check";
+}  // namespace
+
+DefaultHealthCheckService::HealthCheckServiceImpl::HealthCheckServiceImpl(
+    DefaultHealthCheckService* service)
+    : service_(service), method_(nullptr) {
+  MethodHandler* handler =
+      new RpcMethodHandler<HealthCheckServiceImpl, ByteBuffer, ByteBuffer>(
+          std::mem_fn(&HealthCheckServiceImpl::Check), this);
+  method_ = new RpcServiceMethod(kHealthCheckMethodName, RpcMethod::NORMAL_RPC,
+                                 handler);
+  AddMethod(method_);
+}
+
+Status DefaultHealthCheckService::HealthCheckServiceImpl::Check(
+    ServerContext* context, const ByteBuffer* request, ByteBuffer* response) {
+  // Decode request.
+  std::vector<Slice> slices;
+  request->Dump(&slices);
+  uint8_t* request_bytes = nullptr;
+  bool request_bytes_owned = false;
+  size_t request_size = 0;
+  grpc_health_v1_HealthCheckRequest request_struct;
+  if (slices.empty()) {
+    request_struct.has_service = false;
+  } else if (slices.size() == 1) {
+    request_bytes = const_cast<uint8_t*>(slices[0].begin());
+    request_size = slices[0].size();
+  } else {
+    request_bytes_owned = true;
+    request_bytes = static_cast<uint8_t*>(gpr_malloc(request->Length()));
+    uint8_t* copy_to = request_bytes;
+    for (size_t i = 0; i < slices.size(); i++) {
+      memcpy(copy_to, slices[i].begin(), slices[i].size());
+      copy_to += slices[i].size();
+    }
+  }
+
+  if (request_bytes != nullptr) {
+    pb_istream_t istream = pb_istream_from_buffer(request_bytes, request_size);
+    bool decode_status = pb_decode(
+        &istream, grpc_health_v1_HealthCheckRequest_fields, &request_struct);
+    if (request_bytes_owned) {
+      gpr_free(request_bytes);
+    }
+    if (!decode_status) {
+      return Status(StatusCode::INVALID_ARGUMENT, "");
+    }
+  }
+
+  // Check status from the associated default health checking service.
+  DefaultHealthCheckService::ServingStatus serving_status =
+      service_->GetServingStatus(
+          request_struct.has_service ? request_struct.service : "");
+  if (serving_status == DefaultHealthCheckService::NOT_FOUND) {
+    return Status(StatusCode::NOT_FOUND, "");
+  }
+
+  // Encode response
+  grpc_health_v1_HealthCheckResponse response_struct;
+  response_struct.has_status = true;
+  response_struct.status =
+      serving_status == DefaultHealthCheckService::SERVING
+          ? grpc_health_v1_HealthCheckResponse_ServingStatus_SERVING
+          : grpc_health_v1_HealthCheckResponse_ServingStatus_NOT_SERVING;
+  pb_ostream_t ostream;
+  memset(&ostream, 0, sizeof(ostream));
+  pb_encode(&ostream, grpc_health_v1_HealthCheckResponse_fields,
+            &response_struct);
+  grpc_slice response_slice = grpc_slice_malloc(ostream.bytes_written);
+  ostream = pb_ostream_from_buffer(GRPC_SLICE_START_PTR(response_slice),
+                                   GRPC_SLICE_LENGTH(response_slice));
+  bool encode_status = pb_encode(
+      &ostream, grpc_health_v1_HealthCheckResponse_fields, &response_struct);
+  if (!encode_status) {
+    return Status(StatusCode::INTERNAL, "Failed to encode response.");
+  }
+  Slice encoded_response(response_slice, Slice::STEAL_REF);
+  ByteBuffer response_buffer(&encoded_response, 1);
+  response->Swap(&response_buffer);
+  return Status::OK;
+}
+
+DefaultHealthCheckService::DefaultHealthCheckService() {
+  services_map_.emplace("", true);
+}
+
+void DefaultHealthCheckService::SetServingStatus(
+    const grpc::string& service_name, bool serving) {
+  std::lock_guard<std::mutex> lock(mu_);
+  services_map_[service_name] = serving;
+}
+
+void DefaultHealthCheckService::SetServingStatus(bool serving) {
+  std::lock_guard<std::mutex> lock(mu_);
+  for (auto iter = services_map_.begin(); iter != services_map_.end(); ++iter) {
+    iter->second = serving;
+  }
+}
+
+DefaultHealthCheckService::ServingStatus
+DefaultHealthCheckService::GetServingStatus(
+    const grpc::string& service_name) const {
+  std::lock_guard<std::mutex> lock(mu_);
+  const auto& iter = services_map_.find(service_name);
+  if (iter == services_map_.end()) {
+    return NOT_FOUND;
+  }
+  return iter->second ? SERVING : NOT_SERVING;
+}
+
+DefaultHealthCheckService::HealthCheckServiceImpl*
+DefaultHealthCheckService::GetHealthCheckService() {
+  GPR_ASSERT(impl_ == nullptr);
+  impl_.reset(new HealthCheckServiceImpl(this));
+  return impl_.get();
+}
+
+}  // namespace grpc
diff --git a/src/cpp/server/health/default_health_check_service.h b/src/cpp/server/health/default_health_check_service.h
new file mode 100644
index 0000000..5c0e230
--- /dev/null
+++ b/src/cpp/server/health/default_health_check_service.h
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
+#define GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
+
+#include <mutex>
+
+#include <grpc++/health_check_service_interface.h>
+#include <grpc++/impl/codegen/service_type.h>
+#include <grpc++/support/byte_buffer.h>
+
+namespace grpc {
+
+// Default implementation of HealthCheckServiceInterface. Server will create and
+// own it.
+class DefaultHealthCheckService final : public HealthCheckServiceInterface {
+ public:
+  // The service impl to register with the server.
+  class HealthCheckServiceImpl : public Service {
+   public:
+    explicit HealthCheckServiceImpl(DefaultHealthCheckService* service);
+
+    Status Check(ServerContext* context, const ByteBuffer* request,
+                 ByteBuffer* response);
+
+   private:
+    const DefaultHealthCheckService* const service_;
+    RpcServiceMethod* method_;
+  };
+
+  DefaultHealthCheckService();
+  void SetServingStatus(const grpc::string& service_name,
+                        bool serving) override;
+  void SetServingStatus(bool serving) override;
+  enum ServingStatus { NOT_FOUND, SERVING, NOT_SERVING };
+  ServingStatus GetServingStatus(const grpc::string& service_name) const;
+  HealthCheckServiceImpl* GetHealthCheckService();
+
+ private:
+  mutable std::mutex mu_;
+  std::map<grpc::string, bool> services_map_;
+  std::unique_ptr<HealthCheckServiceImpl> impl_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
diff --git a/src/cpp/server/health/health.pb.c b/src/cpp/server/health/health.pb.c
new file mode 100644
index 0000000..09bd98a
--- /dev/null
+++ b/src/cpp/server/health/health.pb.c
@@ -0,0 +1,24 @@
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.7-dev */
+
+#include "src/cpp/server/health/health.pb.h"
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t grpc_health_v1_HealthCheckRequest_fields[2] = {
+    PB_FIELD(  1, STRING  , OPTIONAL, STATIC  , FIRST, grpc_health_v1_HealthCheckRequest, service, service, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t grpc_health_v1_HealthCheckResponse_fields[2] = {
+    PB_FIELD(  1, UENUM   , OPTIONAL, STATIC  , FIRST, grpc_health_v1_HealthCheckResponse, status, status, 0),
+    PB_LAST_FIELD
+};
+
+
+/* @@protoc_insertion_point(eof) */
diff --git a/src/cpp/server/health/health.pb.h b/src/cpp/server/health/health.pb.h
new file mode 100644
index 0000000..7051b32
--- /dev/null
+++ b/src/cpp/server/health/health.pb.h
@@ -0,0 +1,72 @@
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.7-dev */
+
+#ifndef PB_GRPC_HEALTH_V1_HEALTH_PB_H_INCLUDED
+#define PB_GRPC_HEALTH_V1_HEALTH_PB_H_INCLUDED
+#include "third_party/nanopb/pb.h"
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Enum definitions */
+typedef enum _grpc_health_v1_HealthCheckResponse_ServingStatus {
+    grpc_health_v1_HealthCheckResponse_ServingStatus_UNKNOWN = 0,
+    grpc_health_v1_HealthCheckResponse_ServingStatus_SERVING = 1,
+    grpc_health_v1_HealthCheckResponse_ServingStatus_NOT_SERVING = 2
+} grpc_health_v1_HealthCheckResponse_ServingStatus;
+#define _grpc_health_v1_HealthCheckResponse_ServingStatus_MIN grpc_health_v1_HealthCheckResponse_ServingStatus_UNKNOWN
+#define _grpc_health_v1_HealthCheckResponse_ServingStatus_MAX grpc_health_v1_HealthCheckResponse_ServingStatus_NOT_SERVING
+#define _grpc_health_v1_HealthCheckResponse_ServingStatus_ARRAYSIZE ((grpc_health_v1_HealthCheckResponse_ServingStatus)(grpc_health_v1_HealthCheckResponse_ServingStatus_NOT_SERVING+1))
+
+/* Struct definitions */
+typedef struct _grpc_health_v1_HealthCheckRequest {
+    bool has_service;
+    char service[200];
+/* @@protoc_insertion_point(struct:grpc_health_v1_HealthCheckRequest) */
+} grpc_health_v1_HealthCheckRequest;
+
+typedef struct _grpc_health_v1_HealthCheckResponse {
+    bool has_status;
+    grpc_health_v1_HealthCheckResponse_ServingStatus status;
+/* @@protoc_insertion_point(struct:grpc_health_v1_HealthCheckResponse) */
+} grpc_health_v1_HealthCheckResponse;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define grpc_health_v1_HealthCheckRequest_init_default {false, ""}
+#define grpc_health_v1_HealthCheckResponse_init_default {false, (grpc_health_v1_HealthCheckResponse_ServingStatus)0}
+#define grpc_health_v1_HealthCheckRequest_init_zero {false, ""}
+#define grpc_health_v1_HealthCheckResponse_init_zero {false, (grpc_health_v1_HealthCheckResponse_ServingStatus)0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define grpc_health_v1_HealthCheckRequest_service_tag 1
+#define grpc_health_v1_HealthCheckResponse_status_tag 1
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t grpc_health_v1_HealthCheckRequest_fields[2];
+extern const pb_field_t grpc_health_v1_HealthCheckResponse_fields[2];
+
+/* Maximum encoded size of messages (where known) */
+#define grpc_health_v1_HealthCheckRequest_size   203
+#define grpc_health_v1_HealthCheckResponse_size  2
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define HEALTH_MESSAGES \
+
+
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/src/cpp/server/health/health_check_service.cc b/src/cpp/server/health/health_check_service.cc
new file mode 100644
index 0000000..cca68c5
--- /dev/null
+++ b/src/cpp/server/health/health_check_service.cc
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc++/health_check_service_interface.h>
+
+namespace grpc {
+namespace {
+bool g_grpc_default_health_check_service_enabled = false;
+}  // namesapce
+
+bool DefaultHealthCheckServiceEnabled() {
+  return g_grpc_default_health_check_service_enabled;
+}
+
+void EnableDefaultHealthCheckService(bool enable) {
+  g_grpc_default_health_check_service_enabled = enable;
+}
+
+}  // namespace grpc
diff --git a/src/cpp/server/health/health_check_service_server_builder_option.cc b/src/cpp/server/health/health_check_service_server_builder_option.cc
new file mode 100644
index 0000000..2426420
--- /dev/null
+++ b/src/cpp/server/health/health_check_service_server_builder_option.cc
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc++/ext/health_check_service_server_builder_option.h>
+
+namespace grpc {
+
+HealthCheckServiceServerBuilderOption::HealthCheckServiceServerBuilderOption(
+    std::unique_ptr<HealthCheckServiceInterface> hc)
+    : hc_(std::move(hc)) {}
+// Hand over hc_ to the server.
+void HealthCheckServiceServerBuilderOption::UpdateArguments(
+    ChannelArguments* args) {
+  args->SetPointer(kHealthCheckServiceInterfaceArg, hc_.release());
+}
+
+void HealthCheckServiceServerBuilderOption::UpdatePlugins(
+    std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) {}
+
+}  // namespace grpc
diff --git a/src/cpp/server/server_cc.cc b/src/cpp/server/server_cc.cc
index 5ed9f41..150c5a5 100644
--- a/src/cpp/server/server_cc.cc
+++ b/src/cpp/server/server_cc.cc
@@ -37,6 +37,7 @@
 
 #include <grpc++/completion_queue.h>
 #include <grpc++/generic/async_generic_service.h>
+#include <grpc++/impl/codegen/async_unary_call.h>
 #include <grpc++/impl/codegen/completion_queue_tag.h>
 #include <grpc++/impl/grpc_library.h>
 #include <grpc++/impl/method_handler_impl.h>
@@ -51,6 +52,7 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/profiling/timers.h"
+#include "src/cpp/server/health/default_health_check_service.h"
 #include "src/cpp/thread_manager/thread_manager.h"
 
 namespace grpc {
@@ -342,6 +344,7 @@
   int cq_timeout_msec_;
   std::vector<std::unique_ptr<SyncRequest>> sync_requests_;
   std::unique_ptr<RpcServiceMethod> unknown_method_;
+  std::unique_ptr<RpcServiceMethod> health_check_;
   std::shared_ptr<Server::GlobalCallbacks> global_callbacks_;
 };
 
@@ -358,7 +361,8 @@
       shutdown_notified_(false),
       has_generic_service_(false),
       server_(nullptr),
-      server_initializer_(new ServerInitializer(this)) {
+      server_initializer_(new ServerInitializer(this)),
+      health_check_service_disabled_(false) {
   g_gli_initializer.summon();
   gpr_once_init(&g_once_init_callbacks, InitGlobalCallbacks);
   global_callbacks_ = g_callbacks;
@@ -374,6 +378,19 @@
   grpc_channel_args channel_args;
   args->SetChannelArgs(&channel_args);
 
+  for (size_t i = 0; i < channel_args.num_args; i++) {
+    if (0 ==
+        strcmp(channel_args.args[i].key, kHealthCheckServiceInterfaceArg)) {
+      if (channel_args.args[i].value.pointer.p == nullptr) {
+        health_check_service_disabled_ = true;
+      } else {
+        health_check_service_.reset(static_cast<HealthCheckServiceInterface*>(
+            channel_args.args[i].value.pointer.p));
+      }
+      break;
+    }
+  }
+
   server_ = grpc_server_create(&channel_args, nullptr);
 }
 
@@ -480,6 +497,21 @@
   GPR_ASSERT(!started_);
   global_callbacks_->PreServerStart(this);
   started_ = true;
+
+  // Only create default health check service when user did not provide an
+  // explicit one.
+  if (health_check_service_ == nullptr && !health_check_service_disabled_ &&
+      DefaultHealthCheckServiceEnabled()) {
+    if (sync_server_cqs_->empty()) {
+      gpr_log(GPR_ERROR,
+              "Default health check service disabled at async-only server.");
+    } else {
+      auto* default_hc_service = new DefaultHealthCheckService;
+      health_check_service_.reset(default_hc_service);
+      RegisterService(nullptr, default_hc_service->GetHealthCheckService());
+    }
+  }
+
   grpc_server_start(server_);
 
   if (!has_generic_service_) {
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index be07190..48a374f 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -104,7 +104,8 @@
     str_key = ecalloc(key_len + 1, sizeof(char));
     memcpy(str_key, GRPC_SLICE_START_PTR(elem->key), key_len);
     str_val = ecalloc(GRPC_SLICE_LENGTH(elem->value) + 1, sizeof(char));
-    memcpy(str_val, GRPC_SLICE_START_PTR(elem->value), GRPC_SLICE_LENGTH(elem->value));
+    memcpy(str_val, GRPC_SLICE_START_PTR(elem->value),
+           GRPC_SLICE_LENGTH(elem->value));
     if (php_grpc_zend_hash_find(array_hash, str_key, key_len, (void **)&data)
         == SUCCESS) {
       if (Z_TYPE_P(data) != IS_ARRAY) {
@@ -115,7 +116,8 @@
         efree(str_val);
         return NULL;
       }
-      php_grpc_add_next_index_stringl(data, str_val, GRPC_SLICE_LENGTH(elem->value),
+      php_grpc_add_next_index_stringl(data, str_val,
+                                      GRPC_SLICE_LENGTH(elem->value),
                                       false);
     } else {
       PHP_GRPC_MAKE_STD_ZVAL(inner_array);
@@ -172,8 +174,10 @@
       if (Z_TYPE_P(value) != IS_STRING) {
         return false;
       }
-      metadata->metadata[metadata->count].key = grpc_slice_from_copied_string(key1);
-      metadata->metadata[metadata->count].value = grpc_slice_from_copied_buffer(Z_STRVAL_P(value), Z_STRLEN_P(value));
+      metadata->metadata[metadata->count].key =
+        grpc_slice_from_copied_string(key1);
+      metadata->metadata[metadata->count].value =
+        grpc_slice_from_copied_buffer(Z_STRVAL_P(value), Z_STRLEN_P(value));
       metadata->count += 1;
     PHP_GRPC_HASH_FOREACH_END()
   PHP_GRPC_HASH_FOREACH_END()
@@ -233,7 +237,8 @@
       grpc_slice_from_copied_string(host_override) : grpc_empty_slice();
   call->wrapped =
     grpc_channel_create_call(channel->wrapped, NULL, GRPC_PROPAGATE_DEFAULTS,
-                             completion_queue, method_slice, host_override != NULL ? &host_slice : NULL,
+                             completion_queue, method_slice,
+                             host_override != NULL ? &host_slice : NULL,
                              deadline->wrapped, NULL);
   grpc_slice_unref(method_slice);
   grpc_slice_unref(host_slice);
@@ -384,8 +389,10 @@
                                1 TSRMLS_CC);
           goto cleanup;
         }
-        send_status_details = grpc_slice_from_copied_string(Z_STRVAL_P(inner_value));
-        ops[op_num].data.send_status_from_server.status_details = &send_status_details;
+        send_status_details = grpc_slice_from_copied_string(
+          Z_STRVAL_P(inner_value));
+        ops[op_num].data.send_status_from_server.status_details =
+          &send_status_details;
       } else {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "String status details is required",
@@ -557,12 +564,33 @@
   RETURN_LONG(error);
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_construct, 0, 0, 3)
+  ZEND_ARG_INFO(0, channel)
+  ZEND_ARG_INFO(0, method)
+  ZEND_ARG_INFO(0, deadline)
+  ZEND_ARG_INFO(0, host_override)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_startBatch, 0, 0, 1)
+  ZEND_ARG_INFO(0, ops)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_getPeer, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_cancel, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_setCredentials, 0, 0, 1)
+  ZEND_ARG_INFO(0, credentials)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry call_methods[] = {
-  PHP_ME(Call, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
-  PHP_ME(Call, startBatch, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Call, getPeer, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Call, cancel, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Call, setCredentials, NULL, ZEND_ACC_PUBLIC)
+  PHP_ME(Call, __construct, arginfo_construct, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
+  PHP_ME(Call, startBatch, arginfo_startBatch, ZEND_ACC_PUBLIC)
+  PHP_ME(Call, getPeer, arginfo_getPeer, ZEND_ACC_PUBLIC)
+  PHP_ME(Call, cancel, arginfo_cancel, ZEND_ACC_PUBLIC)
+  PHP_ME(Call, setCredentials, arginfo_setCredentials, ZEND_ACC_PUBLIC)
   PHP_FE_END
 };
 
diff --git a/src/php/ext/grpc/call_credentials.c b/src/php/ext/grpc/call_credentials.c
index 043817f..625c0c6 100644
--- a/src/php/ext/grpc/call_credentials.c
+++ b/src/php/ext/grpc/call_credentials.c
@@ -212,10 +212,19 @@
   efree(state);
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createComposite, 0, 0, 2)
+  ZEND_ARG_INFO(0, creds1)
+  ZEND_ARG_INFO(0, creds2)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createFromPlugin, 0, 0, 1)
+  ZEND_ARG_INFO(0, callback)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry call_credentials_methods[] = {
-  PHP_ME(CallCredentials, createComposite, NULL,
+  PHP_ME(CallCredentials, createComposite, arginfo_createComposite,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(CallCredentials, createFromPlugin, NULL,
+  PHP_ME(CallCredentials, createFromPlugin, arginfo_createFromPlugin,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
   PHP_FE_END
 };
diff --git a/src/php/ext/grpc/channel.c b/src/php/ext/grpc/channel.c
index 4ce4f30..c26fe4a 100644
--- a/src/php/ext/grpc/channel.c
+++ b/src/php/ext/grpc/channel.c
@@ -243,12 +243,37 @@
   }
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_construct, 0, 0, 2)
+  ZEND_ARG_INFO(0, target)
+  ZEND_ARG_INFO(0, args)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_getTarget, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_getConnectivityState, 0, 0, 0)
+  ZEND_ARG_INFO(0, try_to_connect)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_watchConnectivityState, 0, 0, 2)
+  ZEND_ARG_INFO(0, last_state)
+  ZEND_ARG_INFO(0, deadline)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_close, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry channel_methods[] = {
-  PHP_ME(Channel, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
-  PHP_ME(Channel, getTarget, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Channel, getConnectivityState, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Channel, watchConnectivityState, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Channel, close, NULL, ZEND_ACC_PUBLIC)
+  PHP_ME(Channel, __construct, arginfo_construct,
+         ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
+  PHP_ME(Channel, getTarget, arginfo_getTarget,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Channel, getConnectivityState, arginfo_getConnectivityState,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Channel, watchConnectivityState, arginfo_watchConnectivityState,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Channel, close, arginfo_close,
+         ZEND_ACC_PUBLIC)
   PHP_FE_END
 };
 
diff --git a/src/php/ext/grpc/channel_credentials.c b/src/php/ext/grpc/channel_credentials.c
index 36a8223..2160a54 100644
--- a/src/php/ext/grpc/channel_credentials.c
+++ b/src/php/ext/grpc/channel_credentials.c
@@ -199,16 +199,37 @@
   RETURN_NULL();
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_setDefaultRootsPem, 0, 0, 1)
+  ZEND_ARG_INFO(0, pem_roots)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createDefault, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createSsl, 0, 0, 0)
+  ZEND_ARG_INFO(0, pem_root_certs)
+  ZEND_ARG_INFO(0, pem_private_key)
+  ZEND_ARG_INFO(0, pem_cert_chain)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createComposite, 0, 0, 2)
+  ZEND_ARG_INFO(0, channel_creds)
+  ZEND_ARG_INFO(0, call_creds)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createInsecure, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry channel_credentials_methods[] = {
-  PHP_ME(ChannelCredentials, setDefaultRootsPem, NULL,
+  PHP_ME(ChannelCredentials, setDefaultRootsPem, arginfo_setDefaultRootsPem,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(ChannelCredentials, createDefault, NULL,
+  PHP_ME(ChannelCredentials, createDefault, arginfo_createDefault,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(ChannelCredentials, createSsl, NULL,
+  PHP_ME(ChannelCredentials, createSsl, arginfo_createSsl,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(ChannelCredentials, createComposite, NULL,
+  PHP_ME(ChannelCredentials, createComposite, arginfo_createComposite,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(ChannelCredentials, createInsecure, NULL,
+  PHP_ME(ChannelCredentials, createInsecure, arginfo_createInsecure,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
   PHP_FE_END
 };
diff --git a/src/php/ext/grpc/server.c b/src/php/ext/grpc/server.c
index 9ac5d2a..87780e9 100644
--- a/src/php/ext/grpc/server.c
+++ b/src/php/ext/grpc/server.c
@@ -116,8 +116,6 @@
 
 /**
  * Request a call on a server. Creates a single GRPC_SERVER_RPC_NEW event.
- * @param long $tag_new The tag to associate with the new request
- * @param long $tag_cancel The tag to use if the call is cancelled
  * @return void
  */
 PHP_METHOD(Server, requestCall) {
@@ -239,12 +237,36 @@
   grpc_server_start(server->wrapped);
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_construct, 0, 0, 0)
+  ZEND_ARG_INFO(0, args)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_requestCall, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_addHttp2Port, 0, 0, 1)
+  ZEND_ARG_INFO(0, addr)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_addSecureHttp2Port, 0, 0, 2)
+  ZEND_ARG_INFO(0, addr)
+  ZEND_ARG_INFO(0, server_creds)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_start, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry server_methods[] = {
-  PHP_ME(Server, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
-  PHP_ME(Server, requestCall, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Server, addHttp2Port, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Server, addSecureHttp2Port, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Server, start, NULL, ZEND_ACC_PUBLIC)
+  PHP_ME(Server, __construct, arginfo_construct,
+         ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
+  PHP_ME(Server, requestCall, arginfo_requestCall,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Server, addHttp2Port, arginfo_addHttp2Port,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Server, addSecureHttp2Port, arginfo_addSecureHttp2Port,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Server, start, arginfo_start,
+         ZEND_ACC_PUBLIC)
   PHP_FE_END
 };
 
diff --git a/src/php/ext/grpc/server_credentials.c b/src/php/ext/grpc/server_credentials.c
index 3e39fee..ec29dfd 100644
--- a/src/php/ext/grpc/server_credentials.c
+++ b/src/php/ext/grpc/server_credentials.c
@@ -117,8 +117,14 @@
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_createSsl, 0, 0, 3)
+  ZEND_ARG_INFO(0, pem_root_certs)
+  ZEND_ARG_INFO(0, pem_private_key)
+  ZEND_ARG_INFO(0, pem_cert_chain)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry server_credentials_methods[] = {
-  PHP_ME(ServerCredentials, createSsl, NULL,
+  PHP_ME(ServerCredentials, createSsl, arginfo_createSsl,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
   PHP_FE_END
  };
diff --git a/src/php/ext/grpc/timeval.c b/src/php/ext/grpc/timeval.c
index 7ada915..78c29e3 100644
--- a/src/php/ext/grpc/timeval.c
+++ b/src/php/ext/grpc/timeval.c
@@ -245,17 +245,65 @@
   gpr_sleep_until(this->wrapped);
 }
 
+ZEND_BEGIN_ARG_INFO_EX(arginfo_construct, 0, 0, 1)
+  ZEND_ARG_INFO(0, microseconds)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_add, 0, 0, 1)
+  ZEND_ARG_INFO(0, timeval)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_compare, 0, 0, 2)
+  ZEND_ARG_INFO(0, a_timeval)
+  ZEND_ARG_INFO(0, b_timeval)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_infFuture, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_infPast, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_now, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_similar, 0, 0, 3)
+  ZEND_ARG_INFO(0, a_timeval)
+  ZEND_ARG_INFO(0, b_timeval)
+  ZEND_ARG_INFO(0, threshold_timeval)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_sleepUntil, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_subtract, 0, 0, 1)
+  ZEND_ARG_INFO(0, timeval)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_zero, 0, 0, 0)
+ZEND_END_ARG_INFO()
+
 static zend_function_entry timeval_methods[] = {
-  PHP_ME(Timeval, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
-  PHP_ME(Timeval, add, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Timeval, compare, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(Timeval, infFuture, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(Timeval, infPast, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(Timeval, now, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(Timeval, similar, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-  PHP_ME(Timeval, sleepUntil, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Timeval, subtract, NULL, ZEND_ACC_PUBLIC)
-  PHP_ME(Timeval, zero, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, __construct, arginfo_construct,
+         ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
+  PHP_ME(Timeval, add, arginfo_add,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Timeval, compare, arginfo_compare,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, infFuture, arginfo_infFuture,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, infPast, arginfo_infPast,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, now, arginfo_now,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, similar, arginfo_similar,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+  PHP_ME(Timeval, sleepUntil, arginfo_sleepUntil,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Timeval, subtract, arginfo_subtract,
+         ZEND_ACC_PUBLIC)
+  PHP_ME(Timeval, zero, arginfo_zero,
+         ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
   PHP_FE_END
 };
 
diff --git a/src/proto/grpc/health/v1/health.options b/src/proto/grpc/health/v1/health.options
new file mode 100644
index 0000000..240b498
--- /dev/null
+++ b/src/proto/grpc/health/v1/health.options
@@ -0,0 +1 @@
+grpc.health.v1.HealthCheckRequest.service max_size:200
diff --git a/test/core/client_channel/BUILD b/test/core/client_channel/BUILD
new file mode 100644
index 0000000..a29e9ac
--- /dev/null
+++ b/test/core/client_channel/BUILD
@@ -0,0 +1,54 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "uri_fuzzer_test",
+  srcs = ["uri_fuzzer_test.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "uri_corpus",
+  copts = ["-std=c99"],
+)
+
+cc_test(
+    name = "lb_policies_test",
+    srcs = ["lb_policies_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:cq_verifier"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "set_initial_connect_string_test",
+    srcs = ["set_initial_connect_string_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/client_channel/resolvers/BUILD b/test/core/client_channel/resolvers/BUILD
new file mode 100644
index 0000000..af37072
--- /dev/null
+++ b/test/core/client_channel/resolvers/BUILD
@@ -0,0 +1,51 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_test(
+    name = "dns_resolver_connectivity_test",
+    srcs = ["dns_resolver_connectivity_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "dns_resolver_test",
+    srcs = ["dns_resolver_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "sockaddr_resolver_test",
+    srcs = ["sockaddr_resolver_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/fling/BUILD b/test/core/fling/BUILD
new file mode 100644
index 0000000..0b0ebcb
--- /dev/null
+++ b/test/core/fling/BUILD
@@ -0,0 +1,62 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+cc_binary(
+    name = "client",
+    srcs = ["client.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    testonly = 1,
+    copts = ['-std=c99']
+)
+
+cc_binary(
+    name = "server",
+    srcs = ["server.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    testonly = 1,
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "fling",
+    srcs = ["fling_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    data = [":client", ":server"]
+)
+
+cc_test(
+    name = "fling_stream",
+    srcs = ["fling_stream_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    data = [":client", ":server"]
+)
diff --git a/test/core/http/BUILD b/test/core/http/BUILD
index 037ede3..abfa759 100644
--- a/test/core/http/BUILD
+++ b/test/core/http/BUILD
@@ -47,3 +47,58 @@
   copts = ["-std=c99"],
 )
 
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+cc_test(
+    name = "httpcli_test",
+    srcs = ["httpcli_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    copts = ['-std=c99'],
+    data = ['test_server.py']
+)
+
+cc_test(
+    name = "httpscli_test",
+    srcs = ["httpscli_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    copts = ['-std=c99'],
+    data = ['test_server.py']
+)
+
+cc_test(
+    name = "parser_test",
+    srcs = ["parser_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/end2end:ssl_test_data"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/iomgr/BUILD b/test/core/iomgr/BUILD
new file mode 100644
index 0000000..0cf93e7
--- /dev/null
+++ b/test/core/iomgr/BUILD
@@ -0,0 +1,181 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+cc_library(
+    name = "endpoint_tests",
+    srcs = ["endpoint_tests.c"],
+    hdrs = ["endpoint_tests.h"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    visibility = ["//test:__subpackages__"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "combiner_test",
+    srcs = ["combiner_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "endpoint_pair_test",
+    srcs = ["endpoint_pair_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", ":endpoint_tests"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "ev_epoll_linux_test",
+    srcs = ["ev_epoll_linux_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "fd_conservation_posix_test",
+    srcs = ["fd_conservation_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "fd_posix_test",
+    srcs = ["fd_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "load_file_test",
+    srcs = ["load_file_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "pollset_set_test",
+    srcs = ["pollset_set_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "resolve_address_posix_test",
+    srcs = ["resolve_address_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "resolve_address_test",
+    srcs = ["resolve_address_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "resource_quota_test",
+    srcs = ["resource_quota_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "sockaddr_utils_test",
+    srcs = ["sockaddr_utils_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "socket_utils_test",
+    srcs = ["socket_utils_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "tcp_client_posix_test",
+    srcs = ["tcp_client_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "tcp_posix_test",
+    srcs = ["tcp_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", ":endpoint_tests"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "tcp_server_posix_test",
+    srcs = ["tcp_server_posix_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "time_averaged_stats_test",
+    srcs = ["time_averaged_stats_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "timer_heap_test",
+    srcs = ["timer_heap_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "timer_list_test",
+    srcs = ["timer_list_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "udp_server_test",
+    srcs = ["udp_server_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "wakeup_fd_cv_test",
+    srcs = ["wakeup_fd_cv_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/json/BUILD b/test/core/json/BUILD
index 05d4c6e..f5a877e 100644
--- a/test/core/json/BUILD
+++ b/test/core/json/BUILD
@@ -1,4 +1,4 @@
-# Copyright 2016, Google Inc.
+# Copyright 2017, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -39,3 +39,32 @@
   copts = ["-std=c99"],
 )
 
+cc_binary(
+    name = "json_rewrite",
+    srcs = ["json_rewrite.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    testonly = 1,
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "json_rewrite_test",
+    srcs = ["json_rewrite_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99'],
+    data = ["rewrite_test_input.json", "rewrite_test_output_condensed.json", "rewrite_test_output_indented.json", ":json_stream_error_test"]
+)
+
+cc_test(
+    name = "json_stream_error_test",
+    srcs = ["json_stream_error_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "json_test",
+    srcs = ["json_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/network_benchmarks/BUILD b/test/core/network_benchmarks/BUILD
new file mode 100644
index 0000000..a5209de
--- /dev/null
+++ b/test/core/network_benchmarks/BUILD
@@ -0,0 +1,37 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_binary(
+    name = "low_level_ping_pong",
+    srcs = ["low_level_ping_pong.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/security/BUILD b/test/core/security/BUILD
new file mode 100644
index 0000000..e750c39
--- /dev/null
+++ b/test/core/security/BUILD
@@ -0,0 +1,104 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "ssl_server_fuzzer",
+  srcs = ["ssl_server_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "corpus",
+  copts = ["-std=c99"],
+)
+
+cc_library(
+    name = "oauth2_utils",
+    srcs = ["oauth2_utils.c"],
+    hdrs = ["oauth2_utils.h"],
+    deps = ["//:grpc"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "auth_context_test",
+    srcs = ["auth_context_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "b64_test",
+    srcs = ["b64_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "credentials_test",
+    srcs = ["credentials_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "secure_endpoint_test",
+    srcs = ["secure_endpoint_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util", "//test/core/iomgr:endpoint_tests"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "security_connector_test",
+    srcs = ["security_connector_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_binary(
+    name = "create_jwt",
+    srcs = ["create_jwt.c"],
+    deps = ["//:grpc", "//:gpr"],
+    copts = ['-std=c99']
+)
+
+cc_binary(
+    name = "fetch_oauth2",
+    srcs = ["fetch_oauth2.c"],
+    deps = ["//:grpc", "//:gpr", ":oauth2_utils"],
+    copts = ['-std=c99']
+)
+
+cc_binary(
+    name = "verify_jwt",
+    srcs = ["verify_jwt.c"],
+    deps = ["//:grpc", "//:gpr"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/slice/BUILD b/test/core/slice/BUILD
new file mode 100644
index 0000000..67a4706
--- /dev/null
+++ b/test/core/slice/BUILD
@@ -0,0 +1,54 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
+
+grpc_fuzzer(
+  name = "percent_decode_fuzzer",
+  srcs = ["percent_decode_fuzzer.c"],
+  deps = ["//:gpr", "//:grpc", "//test/core/util:grpc_test_util"],
+  corpus = "response_corpus",
+  copts = ["-std=c99"],
+)
+
+cc_test(
+    name = "percent_encoding_test",
+    srcs = ["percent_encoding_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "slice_buffer_test",
+    srcs = ["slice_string_helpers_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/transport/BUILD b/test/core/transport/BUILD
new file mode 100644
index 0000000..865b0c2
--- /dev/null
+++ b/test/core/transport/BUILD
@@ -0,0 +1,72 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_test(
+    name = "bdp_estimator_test",
+    srcs = ["bdp_estimator_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "connectivity_state_test",
+    srcs = ["connectivity_state_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "metadata_test",
+    srcs = ["metadata_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "pid_controller_test",
+    srcs = ["pid_controller_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "status_conversion_test",
+    srcs = ["status_conversion_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "timeout_encoding_test",
+    srcs = ["timeout_encoding_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/transport/chttp2/BUILD b/test/core/transport/chttp2/BUILD
index 94b4830..b507e27 100644
--- a/test/core/transport/chttp2/BUILD
+++ b/test/core/transport/chttp2/BUILD
@@ -38,3 +38,58 @@
   corpus = "hpack_parser_corpus"
 )
 
+cc_test(
+    name = "alpn_test",
+    srcs = ["alpn_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "bin_decoder_test",
+    srcs = ["bin_decoder_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "bin_encoder_test",
+    srcs = ["bin_encoder_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "hpack_encoder_test",
+    srcs = ["hpack_encoder_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "hpack_parser_test",
+    srcs = ["hpack_parser_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "hpack_table_test",
+    srcs = ["hpack_table_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "stream_map_test",
+    srcs = ["stream_map_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
+
+cc_test(
+    name = "varint_test",
+    srcs = ["varint_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/tsi/BUILD b/test/core/tsi/BUILD
new file mode 100644
index 0000000..e6cba34
--- /dev/null
+++ b/test/core/tsi/BUILD
@@ -0,0 +1,37 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_test(
+    name = "transport_security_test",
+    srcs = ["transport_security_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/cpp/common/BUILD b/test/cpp/common/BUILD
new file mode 100644
index 0000000..0e2db00
--- /dev/null
+++ b/test/cpp/common/BUILD
@@ -0,0 +1,36 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_test(
+    name = "alarm_cpp_test",
+    srcs = ["alarm_cpp_test.cc"],
+    deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util"],
+)
diff --git a/test/cpp/end2end/health_service_end2end_test.cc b/test/cpp/end2end/health_service_end2end_test.cc
new file mode 100644
index 0000000..3d51007
--- /dev/null
+++ b/test/cpp/end2end/health_service_end2end_test.cc
@@ -0,0 +1,323 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <memory>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/ext/health_check_service_server_builder_option.h>
+#include <grpc++/health_check_service_interface.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc++/server_context.h>
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <gtest/gtest.h>
+
+#include "src/proto/grpc/health/v1/health.grpc.pb.h"
+#include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+#include "test/cpp/end2end/test_service_impl.h"
+
+using grpc::health::v1::Health;
+using grpc::health::v1::HealthCheckRequest;
+using grpc::health::v1::HealthCheckResponse;
+
+namespace grpc {
+namespace testing {
+namespace {
+
+// A sample sync implementation of the health checking service. This does the
+// same thing as the default one.
+class HealthCheckServiceImpl : public ::grpc::health::v1::Health::Service {
+ public:
+  Status Check(ServerContext* context, const HealthCheckRequest* request,
+               HealthCheckResponse* response) override {
+    std::lock_guard<std::mutex> lock(mu_);
+    auto iter = status_map_.find(request->service());
+    if (iter == status_map_.end()) {
+      return Status(StatusCode::NOT_FOUND, "");
+    }
+    response->set_status(iter->second);
+    return Status::OK;
+  }
+
+  void SetStatus(const grpc::string& service_name,
+                 HealthCheckResponse::ServingStatus status) {
+    std::lock_guard<std::mutex> lock(mu_);
+    status_map_[service_name] = status;
+  }
+
+  void SetAll(HealthCheckResponse::ServingStatus status) {
+    std::lock_guard<std::mutex> lock(mu_);
+    for (auto iter = status_map_.begin(); iter != status_map_.end(); ++iter) {
+      iter->second = status;
+    }
+  }
+
+ private:
+  std::mutex mu_;
+  std::map<const grpc::string, HealthCheckResponse::ServingStatus> status_map_;
+};
+
+// A custom implementation of the health checking service interface. This is
+// used to test that it prevents the server from creating a default service and
+// also serves as an example of how to override the default service.
+class CustomHealthCheckService : public HealthCheckServiceInterface {
+ public:
+  explicit CustomHealthCheckService(HealthCheckServiceImpl* impl)
+      : impl_(impl) {
+    impl_->SetStatus("", HealthCheckResponse::SERVING);
+  }
+  void SetServingStatus(const grpc::string& service_name,
+                        bool serving) override {
+    impl_->SetStatus(service_name, serving ? HealthCheckResponse::SERVING
+                                           : HealthCheckResponse::NOT_SERVING);
+  }
+
+  void SetServingStatus(bool serving) override {
+    impl_->SetAll(serving ? HealthCheckResponse::SERVING
+                          : HealthCheckResponse::NOT_SERVING);
+  }
+
+ private:
+  HealthCheckServiceImpl* impl_;  // not owned
+};
+
+void LoopCompletionQueue(ServerCompletionQueue* cq) {
+  void* tag;
+  bool ok;
+  while (cq->Next(&tag, &ok)) {
+    abort();  // Nothing should come out of the cq.
+  }
+}
+
+class HealthServiceEnd2endTest : public ::testing::Test {
+ protected:
+  HealthServiceEnd2endTest() {}
+
+  void SetUpServer(bool register_sync_test_service, bool add_async_cq,
+                   bool explicit_health_service,
+                   std::unique_ptr<HealthCheckServiceInterface> service) {
+    int port = grpc_pick_unused_port_or_die();
+    server_address_ << "localhost:" << port;
+
+    bool register_sync_health_service_impl =
+        explicit_health_service && service != nullptr;
+
+    // Setup server
+    ServerBuilder builder;
+    if (explicit_health_service) {
+      std::unique_ptr<ServerBuilderOption> option(
+          new HealthCheckServiceServerBuilderOption(std::move(service)));
+      builder.SetOption(std::move(option));
+    }
+    builder.AddListeningPort(server_address_.str(),
+                             grpc::InsecureServerCredentials());
+    if (register_sync_test_service) {
+      // Register a sync service.
+      builder.RegisterService(&echo_test_service_);
+    }
+    if (register_sync_health_service_impl) {
+      builder.RegisterService(&health_check_service_impl_);
+    }
+    if (add_async_cq) {
+      cq_ = builder.AddCompletionQueue();
+    }
+    server_ = builder.BuildAndStart();
+  }
+
+  void TearDown() override {
+    if (server_) {
+      server_->Shutdown();
+      if (cq_ != nullptr) {
+        cq_->Shutdown();
+      }
+      if (cq_thread_.joinable()) {
+        cq_thread_.join();
+      }
+    }
+  }
+
+  void ResetStubs() {
+    std::shared_ptr<Channel> channel =
+        CreateChannel(server_address_.str(), InsecureChannelCredentials());
+    hc_stub_ = grpc::health::v1::Health::NewStub(channel);
+  }
+
+  // When the expected_status is NOT OK, we do not care about the response.
+  void SendHealthCheckRpc(const grpc::string& service_name,
+                          const Status& expected_status) {
+    EXPECT_FALSE(expected_status.ok());
+    SendHealthCheckRpc(service_name, expected_status,
+                       HealthCheckResponse::UNKNOWN);
+  }
+
+  void SendHealthCheckRpc(
+      const grpc::string& service_name, const Status& expected_status,
+      HealthCheckResponse::ServingStatus expected_serving_status) {
+    HealthCheckRequest request;
+    request.set_service(service_name);
+    HealthCheckResponse response;
+    ClientContext context;
+    Status s = hc_stub_->Check(&context, request, &response);
+    EXPECT_EQ(expected_status.error_code(), s.error_code());
+    if (s.ok()) {
+      EXPECT_EQ(expected_serving_status, response.status());
+    }
+  }
+
+  void VerifyHealthCheckService() {
+    HealthCheckServiceInterface* service = server_->GetHealthCheckService();
+    EXPECT_TRUE(service != nullptr);
+    const grpc::string kHealthyService("healthy_service");
+    const grpc::string kUnhealthyService("unhealthy_service");
+    const grpc::string kNotRegisteredService("not_registered");
+    service->SetServingStatus(kHealthyService, true);
+    service->SetServingStatus(kUnhealthyService, false);
+
+    ResetStubs();
+
+    SendHealthCheckRpc("", Status::OK, HealthCheckResponse::SERVING);
+    SendHealthCheckRpc(kHealthyService, Status::OK,
+                       HealthCheckResponse::SERVING);
+    SendHealthCheckRpc(kUnhealthyService, Status::OK,
+                       HealthCheckResponse::NOT_SERVING);
+    SendHealthCheckRpc(kNotRegisteredService,
+                       Status(StatusCode::NOT_FOUND, ""));
+
+    service->SetServingStatus(false);
+    SendHealthCheckRpc("", Status::OK, HealthCheckResponse::NOT_SERVING);
+    SendHealthCheckRpc(kHealthyService, Status::OK,
+                       HealthCheckResponse::NOT_SERVING);
+    SendHealthCheckRpc(kUnhealthyService, Status::OK,
+                       HealthCheckResponse::NOT_SERVING);
+    SendHealthCheckRpc(kNotRegisteredService,
+                       Status(StatusCode::NOT_FOUND, ""));
+  }
+
+  TestServiceImpl echo_test_service_;
+  HealthCheckServiceImpl health_check_service_impl_;
+  std::unique_ptr<Health::Stub> hc_stub_;
+  std::unique_ptr<ServerCompletionQueue> cq_;
+  std::unique_ptr<Server> server_;
+  std::ostringstream server_address_;
+  std::thread cq_thread_;
+};
+
+TEST_F(HealthServiceEnd2endTest, DefaultHealthServiceDisabled) {
+  EnableDefaultHealthCheckService(false);
+  EXPECT_FALSE(DefaultHealthCheckServiceEnabled());
+  SetUpServer(true, false, false, nullptr);
+  HealthCheckServiceInterface* default_service =
+      server_->GetHealthCheckService();
+  EXPECT_TRUE(default_service == nullptr);
+
+  ResetStubs();
+
+  SendHealthCheckRpc("", Status(StatusCode::UNIMPLEMENTED, ""));
+}
+
+TEST_F(HealthServiceEnd2endTest, DefaultHealthService) {
+  EnableDefaultHealthCheckService(true);
+  EXPECT_TRUE(DefaultHealthCheckServiceEnabled());
+  SetUpServer(true, false, false, nullptr);
+  VerifyHealthCheckService();
+
+  // The default service has a size limit of the service name.
+  const grpc::string kTooLongServiceName(201, 'x');
+  SendHealthCheckRpc(kTooLongServiceName,
+                     Status(StatusCode::INVALID_ARGUMENT, ""));
+}
+
+// The server has no sync service.
+TEST_F(HealthServiceEnd2endTest, DefaultHealthServiceAsyncOnly) {
+  EnableDefaultHealthCheckService(true);
+  EXPECT_TRUE(DefaultHealthCheckServiceEnabled());
+  SetUpServer(false, true, false, nullptr);
+  cq_thread_ = std::thread(LoopCompletionQueue, cq_.get());
+
+  HealthCheckServiceInterface* default_service =
+      server_->GetHealthCheckService();
+  EXPECT_TRUE(default_service == nullptr);
+
+  ResetStubs();
+
+  SendHealthCheckRpc("", Status(StatusCode::UNIMPLEMENTED, ""));
+}
+
+// Provide an empty service to disable the default service.
+TEST_F(HealthServiceEnd2endTest, ExplicitlyDisableViaOverride) {
+  EnableDefaultHealthCheckService(true);
+  EXPECT_TRUE(DefaultHealthCheckServiceEnabled());
+  std::unique_ptr<HealthCheckServiceInterface> empty_service;
+  SetUpServer(true, false, true, std::move(empty_service));
+  HealthCheckServiceInterface* service = server_->GetHealthCheckService();
+  EXPECT_TRUE(service == nullptr);
+
+  ResetStubs();
+
+  SendHealthCheckRpc("", Status(StatusCode::UNIMPLEMENTED, ""));
+}
+
+// Provide an explicit override of health checking service interface.
+TEST_F(HealthServiceEnd2endTest, ExplicitlyOverride) {
+  EnableDefaultHealthCheckService(true);
+  EXPECT_TRUE(DefaultHealthCheckServiceEnabled());
+  std::unique_ptr<HealthCheckServiceInterface> override_service(
+      new CustomHealthCheckService(&health_check_service_impl_));
+  HealthCheckServiceInterface* underlying_service = override_service.get();
+  SetUpServer(false, false, true, std::move(override_service));
+  HealthCheckServiceInterface* service = server_->GetHealthCheckService();
+  EXPECT_TRUE(service == underlying_service);
+
+  ResetStubs();
+
+  VerifyHealthCheckService();
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/cpp/util/BUILD b/test/cpp/util/BUILD
new file mode 100644
index 0000000..78eca8c
--- /dev/null
+++ b/test/cpp/util/BUILD
@@ -0,0 +1,63 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_library(
+    name = "test_config",
+    srcs = [
+        "test_config_cc.cc",
+    ],
+    hdrs = [
+        "test_config.h",
+    ],
+    deps = ["//:gpr"],
+    visibility = ["//test:__subpackages__"],
+)
+
+cc_library(
+    name = "test_util",
+    srcs = [
+#        "test/cpp/end2end/test_service_impl.cc",
+        "byte_buffer_proto_helper.cc",
+        "create_test_channel.cc",
+        "string_ref_helper.cc",
+        "subprocess.cc",
+        "test_credentials_provider.cc",
+    ],
+    hdrs = [
+        "byte_buffer_proto_helper.h",
+        "create_test_channel.h",
+        "string_ref_helper.h",
+        "subprocess.h",
+        "test_credentials_provider.h",
+    ],
+    deps = ["//test/core/util:gpr_test_util", "//:grpc++", "//test/core/end2end:ssl_test_data"],
+    visibility = ["//test:__subpackages__"],
+)
diff --git a/third_party/gtest.BUILD b/third_party/gtest.BUILD
new file mode 100644
index 0000000..bf98075
--- /dev/null
+++ b/third_party/gtest.BUILD
@@ -0,0 +1,14 @@
+cc_library(
+    name = "gtest",
+    srcs = [
+        "src/gtest-all.cc",
+    ],
+    hdrs = glob(["include/**/*.h", "src/*.cc", "src/*.h"]),
+    includes = [
+        "include", "."
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
+)
diff --git a/tools/distrib/check_copyright.py b/tools/distrib/check_copyright.py
index c993407..611a9f4 100755
--- a/tools/distrib/check_copyright.py
+++ b/tools/distrib/check_copyright.py
@@ -106,6 +106,8 @@
 
   'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h',
   'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
+  'src/cpp/server/health/health.pb.h',
+  'src/cpp/server/health/health.pb.c',
 
   # An older file originally from outside gRPC.
   'src/php/tests/bootstrap.php',
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 0706cdc..551ba46 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -795,9 +795,11 @@
 include/grpc++/completion_queue.h \
 include/grpc++/create_channel.h \
 include/grpc++/create_channel_posix.h \
+include/grpc++/ext/health_check_service_server_builder_option.h \
 include/grpc++/generic/async_generic_service.h \
 include/grpc++/generic/generic_stub.h \
 include/grpc++/grpc++.h \
+include/grpc++/health_check_service_interface.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
 include/grpc++/impl/codegen/async_stream.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index cb0a3e5..0d7ddfc 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -795,9 +795,11 @@
 include/grpc++/completion_queue.h \
 include/grpc++/create_channel.h \
 include/grpc++/create_channel_posix.h \
+include/grpc++/ext/health_check_service_server_builder_option.h \
 include/grpc++/generic/async_generic_service.h \
 include/grpc++/generic/generic_stub.h \
 include/grpc++/grpc++.h \
+include/grpc++/health_check_service_interface.h \
 include/grpc++/impl/call.h \
 include/grpc++/impl/client_unary_call.h \
 include/grpc++/impl/codegen/async_stream.h \
@@ -913,6 +915,12 @@
 src/cpp/server/create_default_thread_pool.cc \
 src/cpp/server/dynamic_thread_pool.cc \
 src/cpp/server/dynamic_thread_pool.h \
+src/cpp/server/health/default_health_check_service.cc \
+src/cpp/server/health/default_health_check_service.h \
+src/cpp/server/health/health.pb.c \
+src/cpp/server/health/health.pb.h \
+src/cpp/server/health/health_check_service.cc \
+src/cpp/server/health/health_check_service_server_builder_option.cc \
 src/cpp/server/insecure_server_credentials.cc \
 src/cpp/server/secure_server_credentials.cc \
 src/cpp/server/secure_server_credentials.h \
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index 0f937ed..98b85cf 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -2894,6 +2894,25 @@
   }, 
   {
     "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "health_service_end2end_test", 
+    "src": [
+      "test/cpp/end2end/health_service_end2end_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
       "grpc", 
       "grpc++", 
       "grpc++_test_config", 
@@ -5517,6 +5536,8 @@
       "thrift_util"
     ], 
     "headers": [
+      "src/proto/grpc/health/v1/health.grpc.pb.h", 
+      "src/proto/grpc/health/v1/health.pb.h", 
       "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h", 
       "src/proto/grpc/testing/duplicate/echo_duplicate.pb.h", 
       "src/proto/grpc/testing/echo.grpc.pb.h", 
@@ -8106,9 +8127,11 @@
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/create_channel_posix.h", 
+      "include/grpc++/ext/health_check_service_server_builder_option.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/grpc++.h", 
+      "include/grpc++/health_check_service_interface.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
       "include/grpc++/impl/codegen/core_codegen.h", 
@@ -8145,6 +8168,8 @@
       "src/cpp/client/create_channel_internal.h", 
       "src/cpp/common/channel_filter.h", 
       "src/cpp/server/dynamic_thread_pool.h", 
+      "src/cpp/server/health/default_health_check_service.h", 
+      "src/cpp/server/health/health.pb.h", 
       "src/cpp/server/thread_pool_interface.h", 
       "src/cpp/thread_manager/thread_manager.h"
     ], 
@@ -8158,9 +8183,11 @@
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/create_channel_posix.h", 
+      "include/grpc++/ext/health_check_service_server_builder_option.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/grpc++.h", 
+      "include/grpc++/health_check_service_interface.h", 
       "include/grpc++/impl/call.h", 
       "include/grpc++/impl/client_unary_call.h", 
       "include/grpc++/impl/codegen/core_codegen.h", 
@@ -8214,6 +8241,12 @@
       "src/cpp/server/create_default_thread_pool.cc", 
       "src/cpp/server/dynamic_thread_pool.cc", 
       "src/cpp/server/dynamic_thread_pool.h", 
+      "src/cpp/server/health/default_health_check_service.cc", 
+      "src/cpp/server/health/default_health_check_service.h", 
+      "src/cpp/server/health/health.pb.c", 
+      "src/cpp/server/health/health.pb.h", 
+      "src/cpp/server/health/health_check_service.cc", 
+      "src/cpp/server/health/health_check_service_server_builder_option.cc", 
       "src/cpp/server/server_builder.cc", 
       "src/cpp/server/server_cc.cc", 
       "src/cpp/server/server_context.cc", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index 1ed1af9..0cfdab4 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -2896,6 +2896,28 @@
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": true, 
+    "language": "c++", 
+    "name": "health_service_end2end_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
     "flaky": true, 
     "gtest": false, 
     "language": "c++", 
diff --git a/tools/run_tests/run_microbenchmark.py b/tools/run_tests/run_microbenchmark.py
index 262c05b..d709cfc 100755
--- a/tools/run_tests/run_microbenchmark.py
+++ b/tools/run_tests/run_microbenchmark.py
@@ -93,7 +93,9 @@
                                        '--benchmark_list_tests']).splitlines():
     link(line, '%s.txt' % fnize(line))
     benchmarks.append(
-        jobset.JobSpec(['bins/basicprof/%s' % bm_name, '--benchmark_filter=^%s$' % line],
+        jobset.JobSpec(['bins/basicprof/%s' % bm_name,
+                        '--benchmark_filter=^%s$' % line,
+                        '--benchmark_min_time=0.05'],
                        environ={'LATENCY_TRACE': '%s.trace' % fnize(line)}))
     profile_analysis.append(
         jobset.JobSpec([sys.executable,
@@ -105,7 +107,7 @@
     # consume upwards of five gigabytes of ram in some cases, and so analysing
     # hundreds of them at once is impractical -- but we want at least some
     # concurrency or the work takes too long
-    if len(benchmarks) >= min(4, multiprocessing.cpu_count()):
+    if len(benchmarks) >= min(16, multiprocessing.cpu_count()):
       # run up to half the cpu count: each benchmark can use up to two cores
       # (one for the microbenchmark, one for the data flush)
       jobset.run(benchmarks, maxjobs=max(1, multiprocessing.cpu_count()/2),
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
index 5859774..45f3037 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
@@ -264,9 +264,11 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\completion_queue.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\ext\health_check_service_server_builder_option.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\async_generic_service.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\generic_stub.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\grpc++.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\health_check_service_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\call.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\client_unary_call.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\core_codegen.h" />
@@ -360,6 +362,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\cpp\client\create_channel_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\common\channel_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\thread_manager\thread_manager.h" />
   </ItemGroup>
@@ -414,6 +418,14 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.cc">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service.cc">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service_server_builder_option.cc">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_builder.cc">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_cc.cc">
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
index 4b501a1..95cdb74 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
@@ -76,6 +76,18 @@
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.c">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service_server_builder_option.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_builder.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -132,6 +144,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel_posix.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\ext\health_check_service_server_builder_option.h">
+      <Filter>include\grpc++\ext</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\async_generic_service.h">
       <Filter>include\grpc++\generic</Filter>
     </ClInclude>
@@ -141,6 +156,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\grpc++.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\health_check_service_interface.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\call.h">
       <Filter>include\grpc++\impl</Filter>
     </ClInclude>
@@ -416,6 +434,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.h">
+      <Filter>src\cpp\server\health</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.h">
+      <Filter>src\cpp\server\health</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>
@@ -434,6 +458,9 @@
     <Filter Include="include\grpc++">
       <UniqueIdentifier>{784a0281-f547-aeb0-9f55-b26b7de9c769}</UniqueIdentifier>
     </Filter>
+    <Filter Include="include\grpc++\ext">
+      <UniqueIdentifier>{25501d8e-5fae-2fe4-14a6-d69a07acefdd}</UniqueIdentifier>
+    </Filter>
     <Filter Include="include\grpc++\generic">
       <UniqueIdentifier>{51dae921-3aa2-1976-2ee4-c5615de1af54}</UniqueIdentifier>
     </Filter>
@@ -476,6 +503,9 @@
     <Filter Include="src\cpp\server">
       <UniqueIdentifier>{321b0980-74ad-e8ca-f23b-deffa5d6bb8f}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\cpp\server\health">
+      <UniqueIdentifier>{5bc9ef4e-78c1-159e-4e4e-30ddfce3e140}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\cpp\thread_manager">
       <UniqueIdentifier>{23f9df56-8604-52a0-e6a2-f01b8e68d0e7}</UniqueIdentifier>
     </Filter>
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
index ba12f0b..13d80ec 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
@@ -210,6 +210,14 @@
     <ClInclude Include="$(SolutionDir)\..\test\cpp\util\test_credentials_provider.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\health\v1\health.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\health\v1\health.pb.h">
+    </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\health\v1\health.grpc.pb.cc">
+    </ClCompile>
+    <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\health\v1\health.grpc.pb.h">
+    </ClInclude>
     <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\echo_messages.pb.cc">
     </ClCompile>
     <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\echo_messages.pb.h">
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
index 116a639..7981feb 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.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="$(SolutionDir)\..\src\proto\grpc\health\v1\health.proto">
+      <Filter>src\proto\grpc\health\v1</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\echo_messages.proto">
       <Filter>src\proto\grpc\testing</Filter>
     </ClCompile>
@@ -254,6 +257,12 @@
     <Filter Include="src\proto\grpc">
       <UniqueIdentifier>{f3daac52-2bfd-362e-9a76-04cd7a90aa34}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\proto\grpc\health">
+      <UniqueIdentifier>{d2393dd7-6f95-0e70-c36d-cd8ef8e2f17e}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\proto\grpc\health\v1">
+      <UniqueIdentifier>{f2f10901-f74f-a55a-abea-082923feb664}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\proto\grpc\testing">
       <UniqueIdentifier>{3df5f11f-e018-1126-8c22-291540035aa8}</UniqueIdentifier>
     </Filter>
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
index f073ea5..22ea361 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -264,9 +264,11 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\completion_queue.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\ext\health_check_service_server_builder_option.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\async_generic_service.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\generic_stub.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\grpc++.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\health_check_service_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\call.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\client_unary_call.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\core_codegen.h" />
@@ -354,6 +356,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\cpp\client\create_channel_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\common\channel_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\thread_manager\thread_manager.h" />
   </ItemGroup>
@@ -398,6 +402,14 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.cc">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service.cc">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service_server_builder_option.cc">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_builder.cc">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_cc.cc">
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index a2515e2..c3cef2d 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -61,6 +61,18 @@
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.c">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\cpp\server\health\health_check_service_server_builder_option.cc">
+      <Filter>src\cpp\server\health</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\server\server_builder.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -117,6 +129,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\create_channel_posix.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\ext\health_check_service_server_builder_option.h">
+      <Filter>include\grpc++\ext</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\generic\async_generic_service.h">
       <Filter>include\grpc++\generic</Filter>
     </ClInclude>
@@ -126,6 +141,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\grpc++.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc++\health_check_service_interface.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\call.h">
       <Filter>include\grpc++\impl</Filter>
     </ClInclude>
@@ -383,6 +401,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\dynamic_thread_pool.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\default_health_check_service.h">
+      <Filter>src\cpp\server\health</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.h">
+      <Filter>src\cpp\server\health</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h">
       <Filter>src\cpp\server</Filter>
     </ClInclude>
@@ -401,6 +425,9 @@
     <Filter Include="include\grpc++">
       <UniqueIdentifier>{eceb50c0-bb49-3812-b6bd-b0af6df81da7}</UniqueIdentifier>
     </Filter>
+    <Filter Include="include\grpc++\ext">
+      <UniqueIdentifier>{e6643be2-2b2f-953d-ab14-27d89c835c8a}</UniqueIdentifier>
+    </Filter>
     <Filter Include="include\grpc++\generic">
       <UniqueIdentifier>{83717d3c-57d9-2bfa-ed9c-2b08f86da12b}</UniqueIdentifier>
     </Filter>
@@ -443,6 +470,9 @@
     <Filter Include="src\cpp\server">
       <UniqueIdentifier>{8a54a279-d14b-4237-0df3-1ffe1ef5a7af}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\cpp\server\health">
+      <UniqueIdentifier>{a003cb5c-7249-106c-8ee5-de5e11a6692c}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\cpp\thread_manager">
       <UniqueIdentifier>{e5b55f25-d99f-b8e5-9981-7da7fa7ba628}</UniqueIdentifier>
     </Filter>
diff --git a/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj b/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj
new file mode 100644
index 0000000..28530d0
--- /dev/null
+++ b/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj
@@ -0,0 +1,207 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{3EB2B3E9-8BC3-8DF7-82CB-38462FFE5919}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\cpptest.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\protobuf.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>health_service_end2end_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>health_service_end2end_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
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+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
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+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
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+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
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+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\end2end\health_service_end2end_test.cc">
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++_test_util\grpc++_test_util.vcxproj">
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
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+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
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+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" />
+  </Target>
+</Project>
+
diff --git a/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj.filters b/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj.filters
new file mode 100644
index 0000000..cccf968
--- /dev/null
+++ b/vsprojects/vcxproj/test/health_service_end2end_test/health_service_end2end_test.vcxproj.filters
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\end2end\health_service_end2end_test.cc">
+      <Filter>test\cpp\end2end</Filter>
+    </ClCompile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="test">
+      <UniqueIdentifier>{00d750b2-db02-2106-d9b7-1d3b2ca58604}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\cpp">
+      <UniqueIdentifier>{02e29b2f-d68a-4474-8483-621ecfd7fa9d}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="test\cpp\end2end">
+      <UniqueIdentifier>{b0de697a-d73a-23e1-c9af-fa0edf011d4d}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
+