Merge branch 'master' into qa

9 years ago · a412162e9e
parent 64e7875510 bfc7adaa71
commit a412162e9e
92 changed files with 1885 additions and 853 deletions
--- a/152
+++ b/152
@ -154,20 +154,6 @@ cc_library(
 cc_library(
  name = "grpc",
  srcs = [
-    "src/core/security/auth_filters.h",
-    "src/core/security/base64.h",
-    "src/core/security/credentials.h",
-    "src/core/security/handshake.h",
-    "src/core/security/json_token.h",
-    "src/core/security/jwt_verifier.h",
-    "src/core/security/secure_endpoint.h",
-    "src/core/security/security_connector.h",
-    "src/core/security/security_context.h",
-    "src/core/tsi/fake_transport_security.h",
-    "src/core/tsi/ssl_transport_security.h",
-    "src/core/tsi/ssl_types.h",
-    "src/core/tsi/transport_security.h",
-    "src/core/tsi/transport_security_interface.h",
    "src/core/census/grpc_filter.h",
    "src/core/channel/channel_args.h",
    "src/core/channel/channel_stack.h",
@ -282,30 +268,23 @@ cc_library(
    "src/core/transport/static_metadata.h",
    "src/core/transport/transport.h",
    "src/core/transport/transport_impl.h",
+    "src/core/security/auth_filters.h",
+    "src/core/security/base64.h",
+    "src/core/security/credentials.h",
+    "src/core/security/handshake.h",
+    "src/core/security/json_token.h",
+    "src/core/security/jwt_verifier.h",
+    "src/core/security/secure_endpoint.h",
+    "src/core/security/security_connector.h",
+    "src/core/security/security_context.h",
+    "src/core/tsi/fake_transport_security.h",
+    "src/core/tsi/ssl_transport_security.h",
+    "src/core/tsi/ssl_types.h",
+    "src/core/tsi/transport_security.h",
+    "src/core/tsi/transport_security_interface.h",
    "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
    "src/core/census/rpc_metric_id.h",
-    "src/core/httpcli/httpcli_security_connector.c",
-    "src/core/security/base64.c",
-    "src/core/security/client_auth_filter.c",
-    "src/core/security/credentials.c",
-    "src/core/security/credentials_metadata.c",
-    "src/core/security/credentials_posix.c",
-    "src/core/security/credentials_win32.c",
-    "src/core/security/google_default_credentials.c",
-    "src/core/security/handshake.c",
-    "src/core/security/json_token.c",
-    "src/core/security/jwt_verifier.c",
-    "src/core/security/secure_endpoint.c",
-    "src/core/security/security_connector.c",
-    "src/core/security/security_context.c",
-    "src/core/security/server_auth_filter.c",
-    "src/core/security/server_secure_chttp2.c",
-    "src/core/surface/init_secure.c",
-    "src/core/surface/secure_channel_create.c",
-    "src/core/tsi/fake_transport_security.c",
-    "src/core/tsi/ssl_transport_security.c",
-    "src/core/tsi/transport_security.c",
    "src/core/census/grpc_context.c",
    "src/core/census/grpc_filter.c",
    "src/core/channel/channel_args.c",
@ -434,9 +413,30 @@ cc_library(
    "src/core/transport/static_metadata.c",
    "src/core/transport/transport.c",
    "src/core/transport/transport_op_string.c",
+    "src/core/httpcli/httpcli_security_connector.c",
+    "src/core/security/base64.c",
+    "src/core/security/client_auth_filter.c",
+    "src/core/security/credentials.c",
+    "src/core/security/credentials_metadata.c",
+    "src/core/security/credentials_posix.c",
+    "src/core/security/credentials_win32.c",
+    "src/core/security/google_default_credentials.c",
+    "src/core/security/handshake.c",
+    "src/core/security/json_token.c",
+    "src/core/security/jwt_verifier.c",
+    "src/core/security/secure_endpoint.c",
+    "src/core/security/security_connector.c",
+    "src/core/security/security_context.c",
+    "src/core/security/server_auth_filter.c",
+    "src/core/security/server_secure_chttp2.c",
+    "src/core/surface/init_secure.c",
+    "src/core/surface/secure_channel_create.c",
+    "src/core/tsi/fake_transport_security.c",
+    "src/core/tsi/ssl_transport_security.c",
+    "src/core/tsi/transport_security.c",
    "src/core/census/context.c",
    "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
    "src/core/census/operation.c",
    "src/core/census/placeholders.c",
    "src/core/census/tracing.c",
@ -589,7 +589,7 @@ cc_library(
    "src/core/transport/transport.h",
    "src/core/transport/transport_impl.h",
    "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
    "src/core/census/rpc_metric_id.h",
    "src/core/surface/init_unsecure.c",
    "src/core/census/grpc_context.c",
@ -722,7 +722,7 @@ cc_library(
    "src/core/transport/transport_op_string.c",
    "src/core/census/context.c",
    "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
    "src/core/census/operation.c",
    "src/core/census/placeholders.c",
    "src/core/census/tracing.c",
@ -1249,27 +1249,6 @@ objc_library(
 objc_library(
  name = "grpc_objc",
  srcs = [
-    "src/core/httpcli/httpcli_security_connector.c",
-    "src/core/security/base64.c",
-    "src/core/security/client_auth_filter.c",
-    "src/core/security/credentials.c",
-    "src/core/security/credentials_metadata.c",
-    "src/core/security/credentials_posix.c",
-    "src/core/security/credentials_win32.c",
-    "src/core/security/google_default_credentials.c",
-    "src/core/security/handshake.c",
-    "src/core/security/json_token.c",
-    "src/core/security/jwt_verifier.c",
-    "src/core/security/secure_endpoint.c",
-    "src/core/security/security_connector.c",
-    "src/core/security/security_context.c",
-    "src/core/security/server_auth_filter.c",
-    "src/core/security/server_secure_chttp2.c",
-    "src/core/surface/init_secure.c",
-    "src/core/surface/secure_channel_create.c",
-    "src/core/tsi/fake_transport_security.c",
-    "src/core/tsi/ssl_transport_security.c",
-    "src/core/tsi/transport_security.c",
    "src/core/census/grpc_context.c",
    "src/core/census/grpc_filter.c",
    "src/core/channel/channel_args.c",
@ -1398,9 +1377,30 @@ objc_library(
    "src/core/transport/static_metadata.c",
    "src/core/transport/transport.c",
    "src/core/transport/transport_op_string.c",
+    "src/core/httpcli/httpcli_security_connector.c",
+    "src/core/security/base64.c",
+    "src/core/security/client_auth_filter.c",
+    "src/core/security/credentials.c",
+    "src/core/security/credentials_metadata.c",
+    "src/core/security/credentials_posix.c",
+    "src/core/security/credentials_win32.c",
+    "src/core/security/google_default_credentials.c",
+    "src/core/security/handshake.c",
+    "src/core/security/json_token.c",
+    "src/core/security/jwt_verifier.c",
+    "src/core/security/secure_endpoint.c",
+    "src/core/security/security_connector.c",
+    "src/core/security/security_context.c",
+    "src/core/security/server_auth_filter.c",
+    "src/core/security/server_secure_chttp2.c",
+    "src/core/surface/init_secure.c",
+    "src/core/surface/secure_channel_create.c",
+    "src/core/tsi/fake_transport_security.c",
+    "src/core/tsi/ssl_transport_security.c",
+    "src/core/tsi/transport_security.c",
    "src/core/census/context.c",
    "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
    "src/core/census/operation.c",
    "src/core/census/placeholders.c",
    "src/core/census/tracing.c",
@ -1419,20 +1419,6 @@ objc_library(
    "include/grpc/grpc.h",
    "include/grpc/status.h",
    "include/grpc/census.h",
-    "src/core/security/auth_filters.h",
-    "src/core/security/base64.h",
-    "src/core/security/credentials.h",
-    "src/core/security/handshake.h",
-    "src/core/security/json_token.h",
-    "src/core/security/jwt_verifier.h",
-    "src/core/security/secure_endpoint.h",
-    "src/core/security/security_connector.h",
-    "src/core/security/security_context.h",
-    "src/core/tsi/fake_transport_security.h",
-    "src/core/tsi/ssl_transport_security.h",
-    "src/core/tsi/ssl_types.h",
-    "src/core/tsi/transport_security.h",
-    "src/core/tsi/transport_security_interface.h",
    "src/core/census/grpc_filter.h",
    "src/core/channel/channel_args.h",
    "src/core/channel/channel_stack.h",
@ -1547,8 +1533,22 @@ objc_library(
    "src/core/transport/static_metadata.h",
    "src/core/transport/transport.h",
    "src/core/transport/transport_impl.h",
+    "src/core/security/auth_filters.h",
+    "src/core/security/base64.h",
+    "src/core/security/credentials.h",
+    "src/core/security/handshake.h",
+    "src/core/security/json_token.h",
+    "src/core/security/jwt_verifier.h",
+    "src/core/security/secure_endpoint.h",
+    "src/core/security/security_connector.h",
+    "src/core/security/security_context.h",
+    "src/core/tsi/fake_transport_security.h",
+    "src/core/tsi/ssl_transport_security.h",
+    "src/core/tsi/ssl_types.h",
+    "src/core/tsi/transport_security.h",
+    "src/core/tsi/transport_security_interface.h",
    "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
    "src/core/census/rpc_metric_id.h",
  ],
  includes = [
--- a/183
+++ b/183
@ -247,7 +247,7 @@ STRIP ?= strip --strip-unneeded
 else
 ifeq ($(SYSTEM),Darwin)
 ifeq ($(origin AR), default)
-AR = libtool -o
+AR = libtool -no_warning_for_no_symbols -o
 endif
 STRIP ?= strip -x
 else
@ -2265,7 +2265,7 @@ $(LIBDIR)/$(CONFIG)/libgpr.a: $(ZLIB_DEP)  $(LIBGPR_OBJS)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBGPR_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgpr.a
 endif


@ -2306,7 +2306,7 @@ $(LIBDIR)/$(CONFIG)/libgpr_test_util.a: $(ZLIB_DEP)  $(LIBGPR_TEST_UTIL_OBJS)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgpr_test_util.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBGPR_TEST_UTIL_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgpr_test_util.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgpr_test_util.a
 endif


@ -2318,27 +2318,6 @@ endif


 LIBGRPC_SRC = \
-    src/core/httpcli/httpcli_security_connector.c \
-    src/core/security/base64.c \
-    src/core/security/client_auth_filter.c \
-    src/core/security/credentials.c \
-    src/core/security/credentials_metadata.c \
-    src/core/security/credentials_posix.c \
-    src/core/security/credentials_win32.c \
-    src/core/security/google_default_credentials.c \
-    src/core/security/handshake.c \
-    src/core/security/json_token.c \
-    src/core/security/jwt_verifier.c \
-    src/core/security/secure_endpoint.c \
-    src/core/security/security_connector.c \
-    src/core/security/security_context.c \
-    src/core/security/server_auth_filter.c \
-    src/core/security/server_secure_chttp2.c \
-    src/core/surface/init_secure.c \
-    src/core/surface/secure_channel_create.c \
-    src/core/tsi/fake_transport_security.c \
-    src/core/tsi/ssl_transport_security.c \
-    src/core/tsi/transport_security.c \
    src/core/census/grpc_context.c \
    src/core/census/grpc_filter.c \
    src/core/channel/channel_args.c \
@ -2467,9 +2446,30 @@ LIBGRPC_SRC = \
    src/core/transport/static_metadata.c \
    src/core/transport/transport.c \
    src/core/transport/transport_op_string.c \
+    src/core/httpcli/httpcli_security_connector.c \
+    src/core/security/base64.c \
+    src/core/security/client_auth_filter.c \
+    src/core/security/credentials.c \
+    src/core/security/credentials_metadata.c \
+    src/core/security/credentials_posix.c \
+    src/core/security/credentials_win32.c \
+    src/core/security/google_default_credentials.c \
+    src/core/security/handshake.c \
+    src/core/security/json_token.c \
+    src/core/security/jwt_verifier.c \
+    src/core/security/secure_endpoint.c \
+    src/core/security/security_connector.c \
+    src/core/security/security_context.c \
+    src/core/security/server_auth_filter.c \
+    src/core/security/server_secure_chttp2.c \
+    src/core/surface/init_secure.c \
+    src/core/surface/secure_channel_create.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
    src/core/census/context.c \
    src/core/census/initialize.c \
-    src/core/census/log.c \
+    src/core/census/mlog.c \
    src/core/census/operation.c \
    src/core/census/placeholders.c \
    src/core/census/tracing.c \
@ -2509,7 +2509,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_OBJS)  $(LIB
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBGRPC_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc.a
 endif


@ -2576,7 +2576,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_TE
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBGRPC_TEST_UTIL_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a
 endif


@ -2612,7 +2612,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a: $(ZLIB_DEP)  $(LIBGRPC_TEST_UT
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBGRPC_TEST_UTIL_UNSECURE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a
 endif


@ -2755,7 +2755,7 @@ LIBGRPC_UNSECURE_SRC = \
    src/core/transport/transport_op_string.c \
    src/core/census/context.c \
    src/core/census/initialize.c \
-    src/core/census/log.c \
+    src/core/census/mlog.c \
    src/core/census/operation.c \
    src/core/census/placeholders.c \
    src/core/census/tracing.c \
@ -2783,7 +2783,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a: $(ZLIB_DEP)  $(LIBGRPC_UNSECURE_OBJS)  $
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBGRPC_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
 endif


@ -2826,7 +2826,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a: $(ZLIB_DEP)  $(LIBGRPC_ZOOKEEPER_OBJS)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a $(LIBGRPC_ZOOKEEPER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_zookeeper.a
 endif


@ -2877,7 +2877,7 @@ $(LIBDIR)/$(CONFIG)/libreconnect_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBRECON
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libreconnect_server.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libreconnect_server.a $(LIBRECONNECT_SERVER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libreconnect_server.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libreconnect_server.a
 endif


@ -2915,7 +2915,7 @@ $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBTEST_T
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a $(LIBTEST_TCP_SERVER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a
 endif


@ -3070,7 +3070,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LI
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBGRPC++_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc++.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++.a
 endif


@ -3135,7 +3135,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOB
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBGRPC++_TEST_CONFIG_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 endif


@ -3162,6 +3162,7 @@ LIBGRPC++_TEST_UTIL_SRC = \
    test/cpp/util/create_test_channel.cc \
    test/cpp/util/string_ref_helper.cc \
    test/cpp/util/subprocess.cc \
+    test/cpp/util/test_credentials_provider.cc \


 LIBGRPC++_TEST_UTIL_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC++_TEST_UTIL_SRC))))
@ -3191,7 +3192,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBGRPC++_TEST_UTIL_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a
 endif


@ -3212,6 +3213,7 @@ $(OBJDIR)/$(CONFIG)/test/cpp/util/cli_call.o: $(GENDIR)/src/proto/grpc/testing/e
 $(OBJDIR)/$(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


 LIBGRPC++_UNSECURE_SRC = \
@ -3339,7 +3341,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBGRPC
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBGRPC++_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
 endif


@ -3447,7 +3449,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIB
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a $(LIBGRPC_PLUGIN_SUPPORT_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a
 endif


@ -3492,7 +3494,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PRO
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBINTEROP_CLIENT_HELPER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a
 endif


@ -3545,7 +3547,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTO
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_client_main.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBINTEROP_CLIENT_MAIN_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libinterop_client_main.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libinterop_client_main.a
 endif


@ -3595,7 +3597,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PRO
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBINTEROP_SERVER_HELPER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a
 endif


@ -3646,7 +3648,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_server_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTO
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_server_main.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBINTEROP_SERVER_MAIN_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libinterop_server_main.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libinterop_server_main.a
 endif


@ -3711,7 +3713,7 @@ $(LIBDIR)/$(CONFIG)/libqps.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBQP
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libqps.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBQPS_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libqps.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libqps.a
 endif


@ -3763,7 +3765,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_C
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a $(LIBGRPC_CSHARP_EXT_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a
 endif


@ -4103,7 +4105,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl.a: $(ZLIB_DEP)  $(LIBBORINGSSL_OBJS)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl.a $(LIBBORINGSSL_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl.a
 endif


@ -4140,7 +4142,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIB
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBBORINGSSL_TEST_UTIL_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a
 endif


@ -4177,7 +4179,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBBORINGSSL_AES_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a
 endif


@ -4214,7 +4216,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBBORINGSSL_BASE64_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a
 endif


@ -4251,7 +4253,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBBORINGSSL_BIO_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a
 endif


@ -4288,7 +4290,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(L
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBBORINGSSL_BN_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a
 endif


@ -4325,7 +4327,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a
 endif


@ -4362,7 +4364,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBBORINGSSL_AEAD_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a
 endif


@ -4399,7 +4401,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a
 endif


@ -4436,7 +4438,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBBORINGSSL_CMAC_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a
 endif


@ -4464,7 +4466,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a: $(ZLIB_DEP)  $(LIBBOR
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a
 endif


@ -4499,7 +4501,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBBORINGSSL_ED25519_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a
 endif


@ -4536,7 +4538,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBBORINGSSL_X25519_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a
 endif


@ -4573,7 +4575,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(L
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a $(LIBBORINGSSL_DH_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a
 endif


@ -4610,7 +4612,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a
 endif


@ -4638,7 +4640,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_DSA
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a $(LIBBORINGSSL_DSA_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a
 endif


@ -4673,7 +4675,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(L
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a $(LIBBORINGSSL_EC_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a
 endif


@ -4701,7 +4703,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a
 endif


@ -4736,7 +4738,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a
 endif


@ -4773,7 +4775,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a $(LIBBORINGSSL_ERR_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a
 endif


@ -4810,7 +4812,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_D
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a
 endif


@ -4847,7 +4849,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBBORINGSSL_EVP_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a
 endif


@ -4884,7 +4886,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a
 endif


@ -4912,7 +4914,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_HK
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a
 endif


@ -4947,7 +4949,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBBORINGSSL_HMAC_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a
 endif


@ -4975,7 +4977,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_L
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a
 endif


@ -5001,7 +5003,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_GCM
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a $(LIBBORINGSSL_GCM_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a
 endif


@ -5036,7 +5038,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a
 endif


@ -5073,7 +5075,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a
 endif


@ -5110,7 +5112,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DE
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a
 endif


@ -5138,7 +5140,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSS
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a
 endif


@ -5173,7 +5175,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a $(LIBBORINGSSL_RSA_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a
 endif


@ -5201,7 +5203,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a
 endif


@ -5227,7 +5229,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_P
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a
 endif


@ -5253,7 +5255,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_TAB
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a $(LIBBORINGSSL_TAB_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a
 endif


@ -5279,7 +5281,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a
 endif


@ -5305,7 +5307,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a $(LIBBORINGSSL_PQUEUE_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_pqueue_test_lib.a
 endif


@ -5340,7 +5342,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a $(LIBBORINGSSL_SSL_TEST_LIB_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a
 endif


@ -5381,7 +5383,7 @@ $(LIBDIR)/$(CONFIG)/libz.a:  $(LIBZ_OBJS)
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libz.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libz.a $(LIBZ_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libz.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libz.a
 endif


@ -5415,7 +5417,7 @@ $(LIBDIR)/$(CONFIG)/libbad_client_test.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBBAD_CL
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libbad_client_test.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBBAD_CLIENT_TEST_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libbad_client_test.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libbad_client_test.a
 endif


@ -5453,7 +5455,7 @@ $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBBA
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a $(LIBBAD_SSL_TEST_SERVER_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a
 endif


@ -5527,7 +5529,7 @@ $(LIBDIR)/$(CONFIG)/libend2end_tests.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBEND2END_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libend2end_tests.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBEND2END_TESTS_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libend2end_tests.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libend2end_tests.a
 endif


@ -5590,7 +5592,7 @@ $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a: $(ZLIB_DEP)  $(LIBEND2END_NOSEC_TE
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBEND2END_NOSEC_TESTS_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
 endif


@ -5626,7 +5628,7 @@ $(LIBDIR)/$(CONFIG)/libend2end_certs.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBEND2END_
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libend2end_certs.a
 	$(Q) $(AR) $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBEND2END_CERTS_OBJS) 
 ifeq ($(SYSTEM),Darwin)
-	$(Q) ranlib $(LIBDIR)/$(CONFIG)/libend2end_certs.a
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libend2end_certs.a
 endif


@ -5838,7 +5840,7 @@ endif


 CENSUS_LOG_TEST_SRC = \
-    test/core/census/log_test.c \
+    test/core/census/mlog_test.c \

 CENSUS_LOG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CENSUS_LOG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@ -5858,7 +5860,7 @@ $(BINDIR)/$(CONFIG)/census_log_test: $(CENSUS_LOG_TEST_OBJS) $(LIBDIR)/$(CONFIG)

 endif

-$(OBJDIR)/$(CONFIG)/test/core/census/log_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/census/mlog_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a

 deps_census_log_test: $(CENSUS_LOG_TEST_OBJS:.o=.dep)

@ -13015,6 +13017,7 @@ test/cpp/util/create_test_channel.cc: $(OPENSSL_DEP)
 test/cpp/util/string_ref_helper.cc: $(OPENSSL_DEP)
 test/cpp/util/subprocess.cc: $(OPENSSL_DEP)
 test/cpp/util/test_config.cc: $(OPENSSL_DEP)
+test/cpp/util/test_credentials_provider.cc: $(OPENSSL_DEP)
 endif

 .PHONY: all strip tools dep_error openssl_dep_error openssl_dep_message git_update stop buildtests buildtests_c buildtests_cxx test test_c test_cxx install install_c install_cxx install-headers install-headers_c install-headers_cxx install-shared install-shared_c install-shared_cxx install-static install-static_c install-static_cxx strip strip-shared strip-static strip_c strip-shared_c strip-static_c strip_cxx strip-shared_cxx strip-static_cxx dep_c dep_cxx bins_dep_c bins_dep_cxx clean
--- a/binding.gyp
+++ b/binding.gyp
@ -557,27 +557,6 @@
        'gpr',
      ],
      'sources': [
-        'src/core/httpcli/httpcli_security_connector.c',
-        'src/core/security/base64.c',
-        'src/core/security/client_auth_filter.c',
-        'src/core/security/credentials.c',
-        'src/core/security/credentials_metadata.c',
-        'src/core/security/credentials_posix.c',
-        'src/core/security/credentials_win32.c',
-        'src/core/security/google_default_credentials.c',
-        'src/core/security/handshake.c',
-        'src/core/security/json_token.c',
-        'src/core/security/jwt_verifier.c',
-        'src/core/security/secure_endpoint.c',
-        'src/core/security/security_connector.c',
-        'src/core/security/security_context.c',
-        'src/core/security/server_auth_filter.c',
-        'src/core/security/server_secure_chttp2.c',
-        'src/core/surface/init_secure.c',
-        'src/core/surface/secure_channel_create.c',
-        'src/core/tsi/fake_transport_security.c',
-        'src/core/tsi/ssl_transport_security.c',
-        'src/core/tsi/transport_security.c',
        'src/core/census/grpc_context.c',
        'src/core/census/grpc_filter.c',
        'src/core/channel/channel_args.c',
@ -706,9 +685,30 @@
        'src/core/transport/static_metadata.c',
        'src/core/transport/transport.c',
        'src/core/transport/transport_op_string.c',
+        'src/core/httpcli/httpcli_security_connector.c',
+        'src/core/security/base64.c',
+        'src/core/security/client_auth_filter.c',
+        'src/core/security/credentials.c',
+        'src/core/security/credentials_metadata.c',
+        'src/core/security/credentials_posix.c',
+        'src/core/security/credentials_win32.c',
+        'src/core/security/google_default_credentials.c',
+        'src/core/security/handshake.c',
+        'src/core/security/json_token.c',
+        'src/core/security/jwt_verifier.c',
+        'src/core/security/secure_endpoint.c',
+        'src/core/security/security_connector.c',
+        'src/core/security/security_context.c',
+        'src/core/security/server_auth_filter.c',
+        'src/core/security/server_secure_chttp2.c',
+        'src/core/surface/init_secure.c',
+        'src/core/surface/secure_channel_create.c',
+        'src/core/tsi/fake_transport_security.c',
+        'src/core/tsi/ssl_transport_security.c',
+        'src/core/tsi/transport_security.c',
        'src/core/census/context.c',
        'src/core/census/initialize.c',
-        'src/core/census/log.c',
+        'src/core/census/mlog.c',
        'src/core/census/operation.c',
        'src/core/census/placeholders.c',
        'src/core/census/tracing.c',
--- a/build.yaml
+++ b/build.yaml
@ -14,12 +14,12 @@ filegroups:
  - include/grpc/census.h
  headers:
  - src/core/census/aggregation.h
-  - src/core/census/log.h
+  - src/core/census/mlog.h
  - src/core/census/rpc_metric_id.h
  src:
  - src/core/census/context.c
  - src/core/census/initialize.c
-  - src/core/census/log.c
+  - src/core/census/mlog.c
  - src/core/census/operation.c
  - src/core/census/placeholders.c
  - src/core/census/tracing.c
@ -495,6 +495,44 @@ filegroups:
  - include/grpc/impl/codegen/grpc_types.h
  - include/grpc/impl/codegen/propagation_bits.h
  - include/grpc/impl/codegen/status.h
+- name: grpc_secure
+  headers:
+  - src/core/security/auth_filters.h
+  - src/core/security/base64.h
+  - src/core/security/credentials.h
+  - src/core/security/handshake.h
+  - src/core/security/json_token.h
+  - src/core/security/jwt_verifier.h
+  - src/core/security/secure_endpoint.h
+  - src/core/security/security_connector.h
+  - src/core/security/security_context.h
+  - src/core/tsi/fake_transport_security.h
+  - src/core/tsi/ssl_transport_security.h
+  - src/core/tsi/ssl_types.h
+  - src/core/tsi/transport_security.h
+  - src/core/tsi/transport_security_interface.h
+  src:
+  - src/core/httpcli/httpcli_security_connector.c
+  - src/core/security/base64.c
+  - src/core/security/client_auth_filter.c
+  - src/core/security/credentials.c
+  - src/core/security/credentials_metadata.c
+  - src/core/security/credentials_posix.c
+  - src/core/security/credentials_win32.c
+  - src/core/security/google_default_credentials.c
+  - src/core/security/handshake.c
+  - src/core/security/json_token.c
+  - src/core/security/jwt_verifier.c
+  - src/core/security/secure_endpoint.c
+  - src/core/security/security_connector.c
+  - src/core/security/security_context.c
+  - src/core/security/server_auth_filter.c
+  - src/core/security/server_secure_chttp2.c
+  - src/core/surface/init_secure.c
+  - src/core/surface/secure_channel_create.c
+  - src/core/tsi/fake_transport_security.c
+  - src/core/tsi/ssl_transport_security.c
+  - src/core/tsi/transport_security.c
 - name: grpc_test_util_base
  headers:
  - test/core/end2end/cq_verifier.h
@ -538,43 +576,6 @@ libs:
  language: c
  public_headers:
  - include/grpc/grpc_security.h
-  headers:
-  - src/core/security/auth_filters.h
-  - src/core/security/base64.h
-  - src/core/security/credentials.h
-  - src/core/security/handshake.h
-  - src/core/security/json_token.h
-  - src/core/security/jwt_verifier.h
-  - src/core/security/secure_endpoint.h
-  - src/core/security/security_connector.h
-  - src/core/security/security_context.h
-  - src/core/tsi/fake_transport_security.h
-  - src/core/tsi/ssl_transport_security.h
-  - src/core/tsi/ssl_types.h
-  - src/core/tsi/transport_security.h
-  - src/core/tsi/transport_security_interface.h
-  src:
-  - src/core/httpcli/httpcli_security_connector.c
-  - src/core/security/base64.c
-  - src/core/security/client_auth_filter.c
-  - src/core/security/credentials.c
-  - src/core/security/credentials_metadata.c
-  - src/core/security/credentials_posix.c
-  - src/core/security/credentials_win32.c
-  - src/core/security/google_default_credentials.c
-  - src/core/security/handshake.c
-  - src/core/security/json_token.c
-  - src/core/security/jwt_verifier.c
-  - src/core/security/secure_endpoint.c
-  - src/core/security/security_connector.c
-  - src/core/security/security_context.c
-  - src/core/security/server_auth_filter.c
-  - src/core/security/server_secure_chttp2.c
-  - src/core/surface/init_secure.c
-  - src/core/surface/secure_channel_create.c
-  - src/core/tsi/fake_transport_security.c
-  - src/core/tsi/ssl_transport_security.c
-  - src/core/tsi/transport_security.c
  deps:
  - gpr
  baselib: true
@ -583,12 +584,34 @@ libs:
  filegroups:
  - grpc_codegen
  - grpc_base
+  - grpc_secure
  - census
  secure: true
  vs_packages:
  - grpc.dependencies.openssl
  - grpc.dependencies.zlib
  vs_project_guid: '{29D16885-7228-4C31-81ED-5F9187C7F2A9}'
+- name: grpc_dll
+  build: private
+  language: c
+  src: []
+  deps:
+  - gpr
+  - grpc
+  build_system:
+  - visual_studio
+  deps_linkage: static
+  dll_def: grpc.def
+  vs_config_type: DynamicLibrary
+  vs_packages:
+  - grpc.dependencies.openssl
+  - grpc.dependencies.zlib
+  vs_project_guid: '{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}'
+  vs_props:
+  - zlib
+  - openssl
+  - winsock
+  - global
 - name: grpc_test_util
  build: private
  language: c
@ -716,6 +739,7 @@ libs:
  - test/cpp/util/create_test_channel.h
  - test/cpp/util/string_ref_helper.h
  - test/cpp/util/subprocess.h
+  - test/cpp/util/test_credentials_provider.h
  src:
  - src/proto/grpc/testing/echo_messages.proto
  - src/proto/grpc/testing/echo.proto
@ -726,6 +750,7 @@ libs:
  - test/cpp/util/create_test_channel.cc
  - test/cpp/util/string_ref_helper.cc
  - test/cpp/util/subprocess.cc
+  - test/cpp/util/test_credentials_provider.cc
  deps:
  - grpc++
  - grpc_test_util
@ -959,7 +984,7 @@ targets:
  build: test
  language: c
  src:
-  - test/core/census/log_test.c
+  - test/core/census/mlog_test.c
  deps:
  - grpc_test_util
  - grpc
--- a/doc/load-balancing.md
+++ b/doc/load-balancing.md
@ -0,0 +1,97 @@
+Load Balancing in gRPC
+=======================
+
+# Objective
+
+To design a load balancing API between a gRPC client and a Load Balancer to
+instruct the client how to send load to multiple backend servers. 
+
+# Background
+
+Prior to any gRPC specifics, we explore some usual ways to approach load
+balancing.
+
+### Proxy Model
+
+Using a proxy provides a solid trustable client that can report load to the load
+balancing system. Proxies typically require more resources to operate since they
+have temporary copies of the RPC request and response. This model also increases
+latency to the RPCs.
+
+The proxy model was deemed inefficient when considering request heavy services
+like storage. 
+
+### Balancing-aware Client
+
+This thicker client places more of the load balancing logic in the client. For
+example, the client could contain many load balancing policies (Round Robin,
+Random, etc) used to select servers from a list. In this model, a list of
+servers would be either statically configured in the client, provided by the
+name resolution system, an external load balancer, etc. In any case, the client
+is responsible for choosing the preferred server from the list. 
+
+One of the drawbacks of this approach is writing and maintaining the load
+balancing policies in multiple languages and/or versions of the clients. These
+policies can be fairly complicated. Some of the algorithms also require client
+to server communication so the client would need to get thicker to support
+additional RPCs to get health or load information in addition to sending RPCs
+for user requests.
+
+It would also significantly complicate the client's code: the new design hides
+the load balancing complexity of multiple layers and presents it as a simple
+list of servers to the client.
+
+### External Load Balancing Service
+
+The client load balancing code is kept simple and portable, implementing
+well-known algorithms (ie, Round Robin) for server selection.
+Complex load balancing algorithms are instead provided by the load balancer. The
+client relies on the load balancer to provide _load balancing configuration_ and
+_the list of servers_ to which the client should send requests. The balancer
+updates the server list as needed to balance the load as well as handle server
+unavailability or health issues. The load balancer will make any necessary
+complex decisions and inform the client. The load balancer may communicate with
+the backend servers to collect load and health information.
+
+# Proposed Architecture
+
+The gRPC load balancing approach follows the third approach, by having an
+external load balancer which provides simple clients with a list of servers.
+
+## Client
+
+When establishing a gRPC stream to the balancer, the client will send an initial
+request to the load balancer (via a regular gRPC message). The load balancer
+will respond with client config (including, for example, settings for flow
+control, RPC deadlines, etc.) or a redirect to another load balancer. If the
+balancer did not redirect the client, it will then send a list of servers to the
+client. The client will contain simple load balancing logic for choosing the
+next server when it needs to send a request.
+
+## Load Balancer
+
+The Load Balancer is responsible for providing the client with a list of servers
+and client RPC parameters. The balancer chooses when to update the list of
+servers and can decide whether to provide a complete list, a subset, or a
+specific list of “picked” servers in a particular order. The balancer can
+optionally provide an expiration interval after which the server list should no
+longer be trusted and should be updated by the balancer.
+
+The load balancer may open reporting streams to each server contained in the
+server list. These streams are primarily used for load reporting. For example,
+Weighted Round Robin requires that the servers report utilization to the load
+balancer in order to compute the next list of servers.
+
+## Server
+
+The gRPC Server is responsible for answering RPC requests and providing
+responses to the client. The server will also report load to the load balancer
+if a reporting stream was opened for this purpose.
+
+### Security 
+
+The load balancer may be separate from the actual server backends and a
+compromise of the load balancer should only lead to a compromise of the
+loadbalancing functionality. In other words, a compromised load balancer should
+not be able to cause a client to trust a (potentially malicious) backend server
+any more than in a comparable situation without loadbalancing. 
--- a/gRPC.podspec
+++ b/gRPC.podspec
@ -158,20 +158,6 @@ Pod::Spec.new do |s|
                      'src/core/support/time_win32.c',
                      'src/core/support/tls_pthread.c',
                      'src/core/support/wrap_memcpy.c',
-                      'src/core/security/auth_filters.h',
-                      'src/core/security/base64.h',
-                      'src/core/security/credentials.h',
-                      'src/core/security/handshake.h',
-                      'src/core/security/json_token.h',
-                      'src/core/security/jwt_verifier.h',
-                      'src/core/security/secure_endpoint.h',
-                      'src/core/security/security_connector.h',
-                      'src/core/security/security_context.h',
-                      'src/core/tsi/fake_transport_security.h',
-                      'src/core/tsi/ssl_transport_security.h',
-                      'src/core/tsi/ssl_types.h',
-                      'src/core/tsi/transport_security.h',
-                      'src/core/tsi/transport_security_interface.h',
                      'src/core/census/grpc_filter.h',
                      'src/core/channel/channel_args.h',
                      'src/core/channel/channel_stack.h',
@ -286,8 +272,22 @@ Pod::Spec.new do |s|
                      'src/core/transport/static_metadata.h',
                      'src/core/transport/transport.h',
                      'src/core/transport/transport_impl.h',
+                      'src/core/security/auth_filters.h',
+                      'src/core/security/base64.h',
+                      'src/core/security/credentials.h',
+                      'src/core/security/handshake.h',
+                      'src/core/security/json_token.h',
+                      'src/core/security/jwt_verifier.h',
+                      'src/core/security/secure_endpoint.h',
+                      'src/core/security/security_connector.h',
+                      'src/core/security/security_context.h',
+                      'src/core/tsi/fake_transport_security.h',
+                      'src/core/tsi/ssl_transport_security.h',
+                      'src/core/tsi/ssl_types.h',
+                      'src/core/tsi/transport_security.h',
+                      'src/core/tsi/transport_security_interface.h',
                      'src/core/census/aggregation.h',
-                      'src/core/census/log.h',
+                      'src/core/census/mlog.h',
                      'src/core/census/rpc_metric_id.h',
                      'include/grpc/grpc_security.h',
                      'include/grpc/impl/codegen/byte_buffer.h',
@ -302,27 +302,6 @@ Pod::Spec.new do |s|
                      'include/grpc/grpc.h',
                      'include/grpc/status.h',
                      'include/grpc/census.h',
-                      'src/core/httpcli/httpcli_security_connector.c',
-                      'src/core/security/base64.c',
-                      'src/core/security/client_auth_filter.c',
-                      'src/core/security/credentials.c',
-                      'src/core/security/credentials_metadata.c',
-                      'src/core/security/credentials_posix.c',
-                      'src/core/security/credentials_win32.c',
-                      'src/core/security/google_default_credentials.c',
-                      'src/core/security/handshake.c',
-                      'src/core/security/json_token.c',
-                      'src/core/security/jwt_verifier.c',
-                      'src/core/security/secure_endpoint.c',
-                      'src/core/security/security_connector.c',
-                      'src/core/security/security_context.c',
-                      'src/core/security/server_auth_filter.c',
-                      'src/core/security/server_secure_chttp2.c',
-                      'src/core/surface/init_secure.c',
-                      'src/core/surface/secure_channel_create.c',
-                      'src/core/tsi/fake_transport_security.c',
-                      'src/core/tsi/ssl_transport_security.c',
-                      'src/core/tsi/transport_security.c',
                      'src/core/census/grpc_context.c',
                      'src/core/census/grpc_filter.c',
                      'src/core/channel/channel_args.c',
@ -451,9 +430,30 @@ Pod::Spec.new do |s|
                      'src/core/transport/static_metadata.c',
                      'src/core/transport/transport.c',
                      'src/core/transport/transport_op_string.c',
+                      'src/core/httpcli/httpcli_security_connector.c',
+                      'src/core/security/base64.c',
+                      'src/core/security/client_auth_filter.c',
+                      'src/core/security/credentials.c',
+                      'src/core/security/credentials_metadata.c',
+                      'src/core/security/credentials_posix.c',
+                      'src/core/security/credentials_win32.c',
+                      'src/core/security/google_default_credentials.c',
+                      'src/core/security/handshake.c',
+                      'src/core/security/json_token.c',
+                      'src/core/security/jwt_verifier.c',
+                      'src/core/security/secure_endpoint.c',
+                      'src/core/security/security_connector.c',
+                      'src/core/security/security_context.c',
+                      'src/core/security/server_auth_filter.c',
+                      'src/core/security/server_secure_chttp2.c',
+                      'src/core/surface/init_secure.c',
+                      'src/core/surface/secure_channel_create.c',
+                      'src/core/tsi/fake_transport_security.c',
+                      'src/core/tsi/ssl_transport_security.c',
+                      'src/core/tsi/transport_security.c',
                      'src/core/census/context.c',
                      'src/core/census/initialize.c',
-                      'src/core/census/log.c',
+                      'src/core/census/mlog.c',
                      'src/core/census/operation.c',
                      'src/core/census/placeholders.c',
                      'src/core/census/tracing.c'
@ -468,20 +468,6 @@ Pod::Spec.new do |s|
                              'src/core/support/string_win32.h',
                              'src/core/support/thd_internal.h',
                              'src/core/support/time_precise.h',
-                              'src/core/security/auth_filters.h',
-                              'src/core/security/base64.h',
-                              'src/core/security/credentials.h',
-                              'src/core/security/handshake.h',
-                              'src/core/security/json_token.h',
-                              'src/core/security/jwt_verifier.h',
-                              'src/core/security/secure_endpoint.h',
-                              'src/core/security/security_connector.h',
-                              'src/core/security/security_context.h',
-                              'src/core/tsi/fake_transport_security.h',
-                              'src/core/tsi/ssl_transport_security.h',
-                              'src/core/tsi/ssl_types.h',
-                              'src/core/tsi/transport_security.h',
-                              'src/core/tsi/transport_security_interface.h',
                              'src/core/census/grpc_filter.h',
                              'src/core/channel/channel_args.h',
                              'src/core/channel/channel_stack.h',
@ -596,8 +582,22 @@ Pod::Spec.new do |s|
                              'src/core/transport/static_metadata.h',
                              'src/core/transport/transport.h',
                              'src/core/transport/transport_impl.h',
+                              'src/core/security/auth_filters.h',
+                              'src/core/security/base64.h',
+                              'src/core/security/credentials.h',
+                              'src/core/security/handshake.h',
+                              'src/core/security/json_token.h',
+                              'src/core/security/jwt_verifier.h',
+                              'src/core/security/secure_endpoint.h',
+                              'src/core/security/security_connector.h',
+                              'src/core/security/security_context.h',
+                              'src/core/tsi/fake_transport_security.h',
+                              'src/core/tsi/ssl_transport_security.h',
+                              'src/core/tsi/ssl_types.h',
+                              'src/core/tsi/transport_security.h',
+                              'src/core/tsi/transport_security_interface.h',
                              'src/core/census/aggregation.h',
-                              'src/core/census/log.h',
+                              'src/core/census/mlog.h',
                              'src/core/census/rpc_metric_id.h'

    ss.header_mappings_dir = '.'
--- a/grpc.gemspec
+++ b/grpc.gemspec
@ -154,20 +154,6 @@ Gem::Specification.new do |s|
  s.files += %w( include/grpc/grpc.h )
  s.files += %w( include/grpc/status.h )
  s.files += %w( include/grpc/census.h )
-  s.files += %w( src/core/security/auth_filters.h )
-  s.files += %w( src/core/security/base64.h )
-  s.files += %w( src/core/security/credentials.h )
-  s.files += %w( src/core/security/handshake.h )
-  s.files += %w( src/core/security/json_token.h )
-  s.files += %w( src/core/security/jwt_verifier.h )
-  s.files += %w( src/core/security/secure_endpoint.h )
-  s.files += %w( src/core/security/security_connector.h )
-  s.files += %w( src/core/security/security_context.h )
-  s.files += %w( src/core/tsi/fake_transport_security.h )
-  s.files += %w( src/core/tsi/ssl_transport_security.h )
-  s.files += %w( src/core/tsi/ssl_types.h )
-  s.files += %w( src/core/tsi/transport_security.h )
-  s.files += %w( src/core/tsi/transport_security_interface.h )
  s.files += %w( src/core/census/grpc_filter.h )
  s.files += %w( src/core/channel/channel_args.h )
  s.files += %w( src/core/channel/channel_stack.h )
@ -282,30 +268,23 @@ Gem::Specification.new do |s|
  s.files += %w( src/core/transport/static_metadata.h )
  s.files += %w( src/core/transport/transport.h )
  s.files += %w( src/core/transport/transport_impl.h )
+  s.files += %w( src/core/security/auth_filters.h )
+  s.files += %w( src/core/security/base64.h )
+  s.files += %w( src/core/security/credentials.h )
+  s.files += %w( src/core/security/handshake.h )
+  s.files += %w( src/core/security/json_token.h )
+  s.files += %w( src/core/security/jwt_verifier.h )
+  s.files += %w( src/core/security/secure_endpoint.h )
+  s.files += %w( src/core/security/security_connector.h )
+  s.files += %w( src/core/security/security_context.h )
+  s.files += %w( src/core/tsi/fake_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_types.h )
+  s.files += %w( src/core/tsi/transport_security.h )
+  s.files += %w( src/core/tsi/transport_security_interface.h )
  s.files += %w( src/core/census/aggregation.h )
-  s.files += %w( src/core/census/log.h )
+  s.files += %w( src/core/census/mlog.h )
  s.files += %w( src/core/census/rpc_metric_id.h )
-  s.files += %w( src/core/httpcli/httpcli_security_connector.c )
-  s.files += %w( src/core/security/base64.c )
-  s.files += %w( src/core/security/client_auth_filter.c )
-  s.files += %w( src/core/security/credentials.c )
-  s.files += %w( src/core/security/credentials_metadata.c )
-  s.files += %w( src/core/security/credentials_posix.c )
-  s.files += %w( src/core/security/credentials_win32.c )
-  s.files += %w( src/core/security/google_default_credentials.c )
-  s.files += %w( src/core/security/handshake.c )
-  s.files += %w( src/core/security/json_token.c )
-  s.files += %w( src/core/security/jwt_verifier.c )
-  s.files += %w( src/core/security/secure_endpoint.c )
-  s.files += %w( src/core/security/security_connector.c )
-  s.files += %w( src/core/security/security_context.c )
-  s.files += %w( src/core/security/server_auth_filter.c )
-  s.files += %w( src/core/security/server_secure_chttp2.c )
-  s.files += %w( src/core/surface/init_secure.c )
-  s.files += %w( src/core/surface/secure_channel_create.c )
-  s.files += %w( src/core/tsi/fake_transport_security.c )
-  s.files += %w( src/core/tsi/ssl_transport_security.c )
-  s.files += %w( src/core/tsi/transport_security.c )
  s.files += %w( src/core/census/grpc_context.c )
  s.files += %w( src/core/census/grpc_filter.c )
  s.files += %w( src/core/channel/channel_args.c )
@ -434,9 +413,30 @@ Gem::Specification.new do |s|
  s.files += %w( src/core/transport/static_metadata.c )
  s.files += %w( src/core/transport/transport.c )
  s.files += %w( src/core/transport/transport_op_string.c )
+  s.files += %w( src/core/httpcli/httpcli_security_connector.c )
+  s.files += %w( src/core/security/base64.c )
+  s.files += %w( src/core/security/client_auth_filter.c )
+  s.files += %w( src/core/security/credentials.c )
+  s.files += %w( src/core/security/credentials_metadata.c )
+  s.files += %w( src/core/security/credentials_posix.c )
+  s.files += %w( src/core/security/credentials_win32.c )
+  s.files += %w( src/core/security/google_default_credentials.c )
+  s.files += %w( src/core/security/handshake.c )
+  s.files += %w( src/core/security/json_token.c )
+  s.files += %w( src/core/security/jwt_verifier.c )
+  s.files += %w( src/core/security/secure_endpoint.c )
+  s.files += %w( src/core/security/security_connector.c )
+  s.files += %w( src/core/security/security_context.c )
+  s.files += %w( src/core/security/server_auth_filter.c )
+  s.files += %w( src/core/security/server_secure_chttp2.c )
+  s.files += %w( src/core/surface/init_secure.c )
+  s.files += %w( src/core/surface/secure_channel_create.c )
+  s.files += %w( src/core/tsi/fake_transport_security.c )
+  s.files += %w( src/core/tsi/ssl_transport_security.c )
+  s.files += %w( src/core/tsi/transport_security.c )
  s.files += %w( src/core/census/context.c )
  s.files += %w( src/core/census/initialize.c )
-  s.files += %w( src/core/census/log.c )
+  s.files += %w( src/core/census/mlog.c )
  s.files += %w( src/core/census/operation.c )
  s.files += %w( src/core/census/placeholders.c )
  s.files += %w( src/core/census/tracing.c )
--- a/include/grpc++/impl/codegen/call.h
+++ b/include/grpc++/impl/codegen/call.h
@ -272,6 +272,7 @@ namespace CallOpGenericRecvMessageHelper {
 class DeserializeFunc {
 public:
  virtual Status Deserialize(grpc_byte_buffer* buf, int max_message_size) = 0;
+  virtual ~DeserializeFunc() {}
 };

 template <class R>
@ -283,6 +284,8 @@ class DeserializeFuncType GRPC_FINAL : public DeserializeFunc {
    return SerializationTraits<R>::Deserialize(buf, message_, max_message_size);
  }

+  ~DeserializeFuncType() override {}
+
 private:
  R* message_;  // Not a managed pointer because management is external to this
 };
--- a/package.json
+++ b/package.json
@ -99,20 +99,6 @@
    "include/grpc/grpc.h",
    "include/grpc/status.h",
    "include/grpc/census.h",
-    "src/core/security/auth_filters.h",
-    "src/core/security/base64.h",
-    "src/core/security/credentials.h",
-    "src/core/security/handshake.h",
-    "src/core/security/json_token.h",
-    "src/core/security/jwt_verifier.h",
-    "src/core/security/secure_endpoint.h",
-    "src/core/security/security_connector.h",
-    "src/core/security/security_context.h",
-    "src/core/tsi/fake_transport_security.h",
-    "src/core/tsi/ssl_transport_security.h",
-    "src/core/tsi/ssl_types.h",
-    "src/core/tsi/transport_security.h",
-    "src/core/tsi/transport_security_interface.h",
    "src/core/census/grpc_filter.h",
    "src/core/channel/channel_args.h",
    "src/core/channel/channel_stack.h",
@ -227,30 +213,23 @@
    "src/core/transport/static_metadata.h",
    "src/core/transport/transport.h",
    "src/core/transport/transport_impl.h",
+    "src/core/security/auth_filters.h",
+    "src/core/security/base64.h",
+    "src/core/security/credentials.h",
+    "src/core/security/handshake.h",
+    "src/core/security/json_token.h",
+    "src/core/security/jwt_verifier.h",
+    "src/core/security/secure_endpoint.h",
+    "src/core/security/security_connector.h",
+    "src/core/security/security_context.h",
+    "src/core/tsi/fake_transport_security.h",
+    "src/core/tsi/ssl_transport_security.h",
+    "src/core/tsi/ssl_types.h",
+    "src/core/tsi/transport_security.h",
+    "src/core/tsi/transport_security_interface.h",
    "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
    "src/core/census/rpc_metric_id.h",
-    "src/core/httpcli/httpcli_security_connector.c",
-    "src/core/security/base64.c",
-    "src/core/security/client_auth_filter.c",
-    "src/core/security/credentials.c",
-    "src/core/security/credentials_metadata.c",
-    "src/core/security/credentials_posix.c",
-    "src/core/security/credentials_win32.c",
-    "src/core/security/google_default_credentials.c",
-    "src/core/security/handshake.c",
-    "src/core/security/json_token.c",
-    "src/core/security/jwt_verifier.c",
-    "src/core/security/secure_endpoint.c",
-    "src/core/security/security_connector.c",
-    "src/core/security/security_context.c",
-    "src/core/security/server_auth_filter.c",
-    "src/core/security/server_secure_chttp2.c",
-    "src/core/surface/init_secure.c",
-    "src/core/surface/secure_channel_create.c",
-    "src/core/tsi/fake_transport_security.c",
-    "src/core/tsi/ssl_transport_security.c",
-    "src/core/tsi/transport_security.c",
    "src/core/census/grpc_context.c",
    "src/core/census/grpc_filter.c",
    "src/core/channel/channel_args.c",
@ -379,9 +358,30 @@
    "src/core/transport/static_metadata.c",
    "src/core/transport/transport.c",
    "src/core/transport/transport_op_string.c",
+    "src/core/httpcli/httpcli_security_connector.c",
+    "src/core/security/base64.c",
+    "src/core/security/client_auth_filter.c",
+    "src/core/security/credentials.c",
+    "src/core/security/credentials_metadata.c",
+    "src/core/security/credentials_posix.c",
+    "src/core/security/credentials_win32.c",
+    "src/core/security/google_default_credentials.c",
+    "src/core/security/handshake.c",
+    "src/core/security/json_token.c",
+    "src/core/security/jwt_verifier.c",
+    "src/core/security/secure_endpoint.c",
+    "src/core/security/security_connector.c",
+    "src/core/security/security_context.c",
+    "src/core/security/server_auth_filter.c",
+    "src/core/security/server_secure_chttp2.c",
+    "src/core/surface/init_secure.c",
+    "src/core/surface/secure_channel_create.c",
+    "src/core/tsi/fake_transport_security.c",
+    "src/core/tsi/ssl_transport_security.c",
+    "src/core/tsi/transport_security.c",
    "src/core/census/context.c",
    "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
    "src/core/census/operation.c",
    "src/core/census/placeholders.c",
    "src/core/census/tracing.c",
--- a/src/core/census/mlog.c
+++ b/src/core/census/mlog.c
@ -88,7 +88,7 @@
 // include the name of the structure, which will be passed as the first
 // argument. E.g. cl_block_initialize() will initialize a cl_block.

-#include "src/core/census/log.h"
+#include "src/core/census/mlog.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/cpu.h>
--- a/src/core/census/mlog.h
+++ b/src/core/census/mlog.h
@ -31,8 +31,10 @@
 *
 */

-#ifndef GRPC_INTERNAL_CORE_CENSUS_LOG_H
-#define GRPC_INTERNAL_CORE_CENSUS_LOG_H
+/* A very fast in-memory log, optimized for multiple writers. */
+
+#ifndef GRPC_INTERNAL_CORE_CENSUS_MLOG_H
+#define GRPC_INTERNAL_CORE_CENSUS_MLOG_H

 #include <grpc/support/port_platform.h>
 #include <stddef.h>
--- a/src/core/iomgr/pollset_posix.h
+++ b/src/core/iomgr/pollset_posix.h
@ -142,6 +142,10 @@ int grpc_pollset_has_workers(grpc_pollset *pollset);
 void grpc_remove_fd_from_all_epoll_sets(int fd);

 /* override to allow tests to hook poll() usage */
+/* NOTE: Any changes to grpc_poll_function must take place when the gRPC
+   is certainly not doing any polling anywhere.
+   Otherwise, there might be a race between changing the variable and actually
+   doing a polling operation */
 typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int);
 extern grpc_poll_function_type grpc_poll_function;
 extern grpc_wakeup_fd grpc_global_wakeup_fd;
--- a/src/csharp/Grpc.Auth/GoogleAuthInterceptors.cs
+++ b/src/csharp/Grpc.Auth/GoogleAuthInterceptors.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -71,7 +71,7 @@ namespace Grpc.Auth
        /// <returns>The interceptor.</returns>
        public static AsyncAuthInterceptor FromAccessToken(string accessToken)
        {
-            Preconditions.CheckNotNull(accessToken);
+            GrpcPreconditions.CheckNotNull(accessToken);
            return new AsyncAuthInterceptor(async (context, metadata) =>
            {
                metadata.Add(CreateBearerTokenHeader(accessToken));
--- a/src/csharp/Grpc.Core/AsyncAuthInterceptor.cs
+++ b/src/csharp/Grpc.Core/AsyncAuthInterceptor.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -61,8 +61,8 @@ namespace Grpc.Core
        /// </summary>
        public AuthInterceptorContext(string serviceUrl, string methodName)
        {
-            this.serviceUrl = Preconditions.CheckNotNull(serviceUrl);
-            this.methodName = Preconditions.CheckNotNull(methodName);
+            this.serviceUrl = GrpcPreconditions.CheckNotNull(serviceUrl);
+            this.methodName = GrpcPreconditions.CheckNotNull(methodName);
        }

        /// <summary>
--- a/src/csharp/Grpc.Core/CallCredentials.cs
+++ b/src/csharp/Grpc.Core/CallCredentials.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -87,7 +87,7 @@ namespace Grpc.Core
        /// <param name="interceptor">authentication interceptor</param>
        public MetadataCredentials(AsyncAuthInterceptor interceptor)
        {
-            this.interceptor = Preconditions.CheckNotNull(interceptor);
+            this.interceptor = GrpcPreconditions.CheckNotNull(interceptor);
        }

        internal override CallCredentialsSafeHandle ToNativeCredentials()
@ -111,7 +111,7 @@ namespace Grpc.Core
        /// <param name="credentials">credentials to compose</param>
        public CompositeCallCredentials(params CallCredentials[] credentials)
        {
-            Preconditions.CheckArgument(credentials.Length >= 2, "Composite credentials object can only be created from 2 or more credentials.");
+            GrpcPreconditions.CheckArgument(credentials.Length >= 2, "Composite credentials object can only be created from 2 or more credentials.");
            this.credentials = new List<CallCredentials>(credentials);
        }

--- a/src/csharp/Grpc.Core/CallInvocationDetails.cs
+++ b/src/csharp/Grpc.Core/CallInvocationDetails.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -85,11 +85,11 @@ namespace Grpc.Core
        /// <param name="options">Call options.</param>
        public CallInvocationDetails(Channel channel, string method, string host, Marshaller<TRequest> requestMarshaller, Marshaller<TResponse> responseMarshaller, CallOptions options)
        {
-            this.channel = Preconditions.CheckNotNull(channel, "channel");
-            this.method = Preconditions.CheckNotNull(method, "method");
+            this.channel = GrpcPreconditions.CheckNotNull(channel, "channel");
+            this.method = GrpcPreconditions.CheckNotNull(method, "method");
            this.host = host;
-            this.requestMarshaller = Preconditions.CheckNotNull(requestMarshaller, "requestMarshaller");
-            this.responseMarshaller = Preconditions.CheckNotNull(responseMarshaller, "responseMarshaller");
+            this.requestMarshaller = GrpcPreconditions.CheckNotNull(requestMarshaller, "requestMarshaller");
+            this.responseMarshaller = GrpcPreconditions.CheckNotNull(responseMarshaller, "responseMarshaller");
            this.options = options;
        }

--- a/src/csharp/Grpc.Core/CallOptions.cs
+++ b/src/csharp/Grpc.Core/CallOptions.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -176,13 +176,13 @@ namespace Grpc.Core
            {
                if (propagationToken.Options.IsPropagateDeadline)
                {
-                    Preconditions.CheckArgument(!newOptions.deadline.HasValue,
+                    GrpcPreconditions.CheckArgument(!newOptions.deadline.HasValue,
                        "Cannot propagate deadline from parent call. The deadline has already been set explicitly.");
                    newOptions.deadline = propagationToken.ParentDeadline;
                }
                if (propagationToken.Options.IsPropagateCancellation)
                {
-                    Preconditions.CheckArgument(!newOptions.cancellationToken.CanBeCanceled,
+                    GrpcPreconditions.CheckArgument(!newOptions.cancellationToken.CanBeCanceled,
                        "Cannot propagate cancellation token from parent call. The cancellation token has already been set to a non-default value.");
                    newOptions.cancellationToken = propagationToken.ParentCancellationToken;
                }
--- a/src/csharp/Grpc.Core/Channel.cs
+++ b/src/csharp/Grpc.Core/Channel.cs
@ -1,5 +1,5 @@
 #region Copyright notice and license
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -68,7 +68,7 @@ namespace Grpc.Core
        /// <param name="options">Channel options.</param>
        public Channel(string target, ChannelCredentials credentials, IEnumerable<ChannelOption> options = null)
        {
-            this.target = Preconditions.CheckNotNull(target, "target");
+            this.target = GrpcPreconditions.CheckNotNull(target, "target");
            this.options = CreateOptionsDictionary(options);
            EnsureUserAgentChannelOption(this.options);
            this.environment = GrpcEnvironment.AddRef();
@ -117,7 +117,7 @@ namespace Grpc.Core
        /// </summary>
        public Task WaitForStateChangedAsync(ChannelState lastObservedState, DateTime? deadline = null)
        {
-            Preconditions.CheckArgument(lastObservedState != ChannelState.FatalFailure,
+            GrpcPreconditions.CheckArgument(lastObservedState != ChannelState.FatalFailure,
                "FatalFailure is a terminal state. No further state changes can occur.");
            var tcs = new TaskCompletionSource<object>();
            var deadlineTimespec = deadline.HasValue ? Timespec.FromDateTime(deadline.Value) : Timespec.InfFuture;
@ -184,7 +184,7 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!shutdownRequested);
+                GrpcPreconditions.CheckState(!shutdownRequested);
                shutdownRequested = true;
            }

@ -221,7 +221,7 @@ namespace Grpc.Core

            bool success = false;
            handle.DangerousAddRef(ref success);
-            Preconditions.CheckState(success);
+            GrpcPreconditions.CheckState(success);
        }

        internal void RemoveCallReference(object call)
--- a/src/csharp/Grpc.Core/ChannelCredentials.cs
+++ b/src/csharp/Grpc.Core/ChannelCredentials.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -183,9 +183,9 @@ namespace Grpc.Core
        /// <param name="callCredentials">channelCredentials to compose</param>
        public CompositeChannelCredentials(ChannelCredentials channelCredentials, CallCredentials callCredentials)
        {
-            this.channelCredentials = Preconditions.CheckNotNull(channelCredentials);
-            this.callCredentials = Preconditions.CheckNotNull(callCredentials);
-            Preconditions.CheckArgument(channelCredentials.IsComposable, "Supplied channel credentials do not allow composition.");
+            this.channelCredentials = GrpcPreconditions.CheckNotNull(channelCredentials);
+            this.callCredentials = GrpcPreconditions.CheckNotNull(callCredentials);
+            GrpcPreconditions.CheckArgument(channelCredentials.IsComposable, "Supplied channel credentials do not allow composition.");
        }

        internal override ChannelCredentialsSafeHandle ToNativeCredentials()
--- a/src/csharp/Grpc.Core/ChannelOptions.cs
+++ b/src/csharp/Grpc.Core/ChannelOptions.cs
@ -1,5 +1,5 @@
 #region Copyright notice and license
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -73,8 +73,8 @@ namespace Grpc.Core
        public ChannelOption(string name, string stringValue)
        {
            this.type = OptionType.String;
-            this.name = Preconditions.CheckNotNull(name, "name");
-            this.stringValue = Preconditions.CheckNotNull(stringValue, "stringValue");
+            this.name = GrpcPreconditions.CheckNotNull(name, "name");
+            this.stringValue = GrpcPreconditions.CheckNotNull(stringValue, "stringValue");
        }

        /// <summary>
@ -85,7 +85,7 @@ namespace Grpc.Core
        public ChannelOption(string name, int intValue)
        {
            this.type = OptionType.Integer;
-            this.name = Preconditions.CheckNotNull(name, "name");
+            this.name = GrpcPreconditions.CheckNotNull(name, "name");
            this.intValue = intValue;
        }

@ -118,7 +118,7 @@ namespace Grpc.Core
        {
            get
            {
-                Preconditions.CheckState(type == OptionType.Integer);
+                GrpcPreconditions.CheckState(type == OptionType.Integer);
                return intValue;
            }
        }
@ -130,7 +130,7 @@ namespace Grpc.Core
        {
            get
            {
-                Preconditions.CheckState(type == OptionType.String);
+                GrpcPreconditions.CheckState(type == OptionType.String);
                return stringValue;
            }
        }
--- a/src/csharp/Grpc.Core/ContextPropagationToken.cs
+++ b/src/csharp/Grpc.Core/ContextPropagationToken.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -68,7 +68,7 @@ namespace Grpc.Core

        internal ContextPropagationToken(CallSafeHandle parentCall, DateTime deadline, CancellationToken cancellationToken, ContextPropagationOptions options)
        {
-            this.parentCall = Preconditions.CheckNotNull(parentCall);
+            this.parentCall = GrpcPreconditions.CheckNotNull(parentCall);
            this.deadline = deadline;
            this.cancellationToken = cancellationToken;
            this.options = options ?? ContextPropagationOptions.Default;
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@ -39,8 +39,7 @@
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
-    <Reference Include="System.Interactive.Async, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
+    <Reference Include="System.Interactive.Async">
      <HintPath>..\packages\Ix-Async.1.2.5\lib\net45\System.Interactive.Async.dll</HintPath>
    </Reference>
  </ItemGroup>
@ -91,7 +90,6 @@
    <Compile Include="Internal\AsyncCallBase.cs" />
    <Compile Include="Internal\AsyncCallServer.cs" />
    <Compile Include="Internal\AsyncCall.cs" />
-    <Compile Include="Utils\Preconditions.cs" />
    <Compile Include="Internal\ServerCredentialsSafeHandle.cs" />
    <Compile Include="ServerCredentials.cs" />
    <Compile Include="Metadata.cs" />
@ -130,6 +128,7 @@
    <Compile Include="Profiling\IProfiler.cs" />
    <Compile Include="Profiling\Profilers.cs" />
    <Compile Include="Internal\DefaultSslRootsOverride.cs" />
+    <Compile Include="Utils\GrpcPreconditions.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Include="Grpc.Core.nuspec" />
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@ -83,7 +83,7 @@ namespace Grpc.Core
        {
            lock (staticLock)
            {
-                Preconditions.CheckState(refCount > 0);
+                GrpcPreconditions.CheckState(refCount > 0);
                refCount--;
                if (refCount == 0)
                {
@ -118,7 +118,7 @@ namespace Grpc.Core
        /// </summary>
        public static void SetLogger(ILogger customLogger)
        {
-            Preconditions.CheckNotNull(customLogger, "customLogger");
+            GrpcPreconditions.CheckNotNull(customLogger, "customLogger");
            logger = customLogger;
        }

--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@ -99,7 +99,7 @@ namespace Grpc.Core.Internal

                lock (myLock)
                {
-                    Preconditions.CheckState(!started);
+                    GrpcPreconditions.CheckState(!started);
                    started = true;
                    Initialize(cq);

@ -141,7 +141,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!started);
+                GrpcPreconditions.CheckState(!started);
                started = true;

                Initialize(environment.CompletionQueue);
@ -168,7 +168,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!started);
+                GrpcPreconditions.CheckState(!started);
                started = true;

                Initialize(environment.CompletionQueue);
@ -192,7 +192,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!started);
+                GrpcPreconditions.CheckState(!started);
                started = true;

                Initialize(environment.CompletionQueue);
@ -217,7 +217,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!started);
+                GrpcPreconditions.CheckState(!started);
                started = true;

                Initialize(environment.CompletionQueue);
@ -257,7 +257,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
                CheckSendingAllowed();

                call.StartSendCloseFromClient(HandleHalfclosed);
@ -297,7 +297,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(finishedStatus.HasValue, "Status can only be accessed once the call has finished.");
+                GrpcPreconditions.CheckState(finishedStatus.HasValue, "Status can only be accessed once the call has finished.");
                return finishedStatus.Value.Status;
            }
        }
@ -310,7 +310,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(finishedStatus.HasValue, "Trailers can only be accessed once the call has finished.");
+                GrpcPreconditions.CheckState(finishedStatus.HasValue, "Trailers can only be accessed once the call has finished.");
                return finishedStatus.Value.Trailers;
            }
        }
--- a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
@ -79,9 +79,9 @@ namespace Grpc.Core.Internal

        public AsyncCallBase(Func<TWrite, byte[]> serializer, Func<byte[], TRead> deserializer, GrpcEnvironment environment)
        {
-            this.serializer = Preconditions.CheckNotNull(serializer);
-            this.deserializer = Preconditions.CheckNotNull(deserializer);
-            this.environment = Preconditions.CheckNotNull(environment);
+            this.serializer = GrpcPreconditions.CheckNotNull(serializer);
+            this.deserializer = GrpcPreconditions.CheckNotNull(deserializer);
+            this.environment = GrpcPreconditions.CheckNotNull(environment);
        }

        /// <summary>
@ -91,7 +91,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckState(started);
+                GrpcPreconditions.CheckState(started);
                cancelRequested = true;

                if (!disposed)
@ -135,7 +135,7 @@ namespace Grpc.Core.Internal

            lock (myLock)
            {
-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
                CheckSendingAllowed();

                call.StartSendMessage(HandleSendFinished, payload, writeFlags, !initialMetadataSent);
@ -154,7 +154,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
                CheckReadingAllowed();

                call.StartReceiveMessage(HandleReadFinished);
@ -204,22 +204,22 @@ namespace Grpc.Core.Internal

        protected void CheckSendingAllowed()
        {
-            Preconditions.CheckState(started);
+            GrpcPreconditions.CheckState(started);
            CheckNotCancelled();
-            Preconditions.CheckState(!disposed);
+            GrpcPreconditions.CheckState(!disposed);

-            Preconditions.CheckState(!halfcloseRequested, "Already halfclosed.");
-            Preconditions.CheckState(!finished, "Already finished.");
-            Preconditions.CheckState(sendCompletionDelegate == null, "Only one write can be pending at a time");
+            GrpcPreconditions.CheckState(!halfcloseRequested, "Already halfclosed.");
+            GrpcPreconditions.CheckState(!finished, "Already finished.");
+            GrpcPreconditions.CheckState(sendCompletionDelegate == null, "Only one write can be pending at a time");
        }

        protected virtual void CheckReadingAllowed()
        {
-            Preconditions.CheckState(started);
-            Preconditions.CheckState(!disposed);
+            GrpcPreconditions.CheckState(started);
+            GrpcPreconditions.CheckState(!disposed);

-            Preconditions.CheckState(!readingDone, "Stream has already been closed.");
-            Preconditions.CheckState(readCompletionDelegate == null, "Only one read can be pending at a time");
+            GrpcPreconditions.CheckState(!readingDone, "Stream has already been closed.");
+            GrpcPreconditions.CheckState(readCompletionDelegate == null, "Only one read can be pending at a time");
        }

        protected void CheckNotCancelled()
--- a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
@ -53,7 +53,7 @@ namespace Grpc.Core.Internal

        public AsyncCallServer(Func<TResponse, byte[]> serializer, Func<byte[], TRequest> deserializer, GrpcEnvironment environment, Server server) : base(serializer, deserializer, environment)
        {
-            this.server = Preconditions.CheckNotNull(server);
+            this.server = GrpcPreconditions.CheckNotNull(server);
        }

        public void Initialize(CallSafeHandle call)
@ -71,7 +71,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(call);
+                GrpcPreconditions.CheckNotNull(call);

                started = true;

@ -108,14 +108,14 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(headers, "metadata");
-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(headers, "metadata");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");

-                Preconditions.CheckState(!initialMetadataSent, "Response headers can only be sent once per call.");
-                Preconditions.CheckState(streamingWritesCounter == 0, "Response headers can only be sent before the first write starts.");
+                GrpcPreconditions.CheckState(!initialMetadataSent, "Response headers can only be sent once per call.");
+                GrpcPreconditions.CheckState(streamingWritesCounter == 0, "Response headers can only be sent before the first write starts.");
                CheckSendingAllowed();

-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");

                using (var metadataArray = MetadataArraySafeHandle.Create(headers))
                {
@ -136,7 +136,7 @@ namespace Grpc.Core.Internal
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
+                GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
                CheckSendingAllowed();

                using (var metadataArray = MetadataArraySafeHandle.Create(trailers))
@ -177,7 +177,7 @@ namespace Grpc.Core.Internal
        protected override void CheckReadingAllowed()
        {
            base.CheckReadingAllowed();
-            Preconditions.CheckArgument(!cancelRequested);
+            GrpcPreconditions.CheckArgument(!cancelRequested);
        }

        protected override void OnAfterReleaseResources()
--- a/src/csharp/Grpc.Core/Internal/CompletionQueueSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CompletionQueueSafeHandle.cs
@ -101,7 +101,7 @@ namespace Grpc.Core.Internal
        {
            bool success = false;
            shutdownRefcount.IncrementIfNonzero(ref success);
-            Preconditions.CheckState(success, "Shutdown has already been called");
+            GrpcPreconditions.CheckState(success, "Shutdown has already been called");
        }

        private void EndOp()
--- a/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs
+++ b/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -59,7 +59,7 @@ namespace Grpc.Core.Internal
        public void Register(IntPtr key, OpCompletionDelegate callback)
        {
            environment.DebugStats.PendingBatchCompletions.Increment();
-            Preconditions.CheckState(dict.TryAdd(key, callback));
+            GrpcPreconditions.CheckState(dict.TryAdd(key, callback));
        }

        public void RegisterBatchCompletion(BatchContextSafeHandle ctx, BatchCompletionDelegate callback)
@ -71,7 +71,7 @@ namespace Grpc.Core.Internal
        public OpCompletionDelegate Extract(IntPtr key)
        {
            OpCompletionDelegate value;
-            Preconditions.CheckState(dict.TryRemove(key, out value));
+            GrpcPreconditions.CheckState(dict.TryRemove(key, out value));
            environment.DebugStats.PendingBatchCompletions.Decrement();
            return value;
        }
--- a/src/csharp/Grpc.Core/Internal/Enums.cs
+++ b/src/csharp/Grpc.Core/Internal/Enums.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -72,7 +72,7 @@ namespace Grpc.Core.Internal
        /// </summary>
        public static void CheckOk(this GRPCCallError callError)
        {
-            Preconditions.CheckState(callError == GRPCCallError.OK, "Call error: " + callError);
+            GrpcPreconditions.CheckState(callError == GRPCCallError.OK, "Call error: " + callError);
        }
    }

--- a/src/csharp/Grpc.Core/Internal/NativeMetadataCredentialsPlugin.cs
+++ b/src/csharp/Grpc.Core/Internal/NativeMetadataCredentialsPlugin.cs
@ -53,7 +53,7 @@ namespace Grpc.Core.Internal

        public NativeMetadataCredentialsPlugin(AsyncAuthInterceptor interceptor)
        {
-            this.interceptor = Preconditions.CheckNotNull(interceptor, "interceptor");
+            this.interceptor = GrpcPreconditions.CheckNotNull(interceptor, "interceptor");
            this.nativeInterceptor = NativeMetadataInterceptorHandler;

            // Make sure the callback doesn't get garbage collected until it is destroyed.
--- a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -78,10 +78,10 @@ namespace Grpc.Core.Internal
            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, responseStream, asyncCall.CancellationToken);
            try
            {
-                Preconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
+                GrpcPreconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
                var request = requestStream.Current;
                // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
-                Preconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
+                GrpcPreconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
                var result = await handler(request, context).ConfigureAwait(false);
                status = context.Status;
                await responseStream.WriteAsync(result).ConfigureAwait(false);
@ -134,10 +134,10 @@ namespace Grpc.Core.Internal
            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, responseStream, asyncCall.CancellationToken);
            try
            {
-                Preconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
+                GrpcPreconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
                var request = requestStream.Current;
                // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
-                Preconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
+                GrpcPreconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
                await handler(request, responseStream, context).ConfigureAwait(false);
                status = context.Status;
            }
--- a/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
@ -49,7 +49,7 @@ namespace Grpc.Core.Internal

        public static ServerCredentialsSafeHandle CreateSslCredentials(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray, bool forceClientAuth)
        {
-            Preconditions.CheckArgument(keyCertPairCertChainArray.Length == keyCertPairPrivateKeyArray.Length);
+            GrpcPreconditions.CheckArgument(keyCertPairCertChainArray.Length == keyCertPairPrivateKeyArray.Length);
            return Native.grpcsharp_ssl_server_credentials_create(pemRootCerts,
                                                                  keyCertPairCertChainArray, keyCertPairPrivateKeyArray,
                                                                  new UIntPtr((ulong)keyCertPairCertChainArray.Length),
--- a/src/csharp/Grpc.Core/Internal/Timespec.cs
+++ b/src/csharp/Grpc.Core/Internal/Timespec.cs
@ -141,8 +141,8 @@ namespace Grpc.Core.Internal
        /// </summary>
        public DateTime ToDateTime()
        {
-            Preconditions.CheckState(tv_nsec >= 0 && tv_nsec < NanosPerSecond);
-            Preconditions.CheckState(clock_type == GPRClockType.Realtime);
+            GrpcPreconditions.CheckState(tv_nsec >= 0 && tv_nsec < NanosPerSecond);
+            GrpcPreconditions.CheckState(clock_type == GPRClockType.Realtime);

            // fast path for InfFuture
            if (this.Equals(InfFuture))
@ -195,7 +195,7 @@ namespace Grpc.Core.Internal
                return Timespec.InfPast;
            }

-            Preconditions.CheckArgument(dateTime.Kind == DateTimeKind.Utc, "dateTime needs of kind DateTimeKind.Utc or be equal to DateTime.MaxValue or DateTime.MinValue.");
+            GrpcPreconditions.CheckArgument(dateTime.Kind == DateTimeKind.Utc, "dateTime needs of kind DateTimeKind.Utc or be equal to DateTime.MaxValue or DateTime.MinValue.");

            try
            {
--- a/src/csharp/Grpc.Core/Internal/UnmanagedLibrary.cs
+++ b/src/csharp/Grpc.Core/Internal/UnmanagedLibrary.cs
@ -65,7 +65,7 @@ namespace Grpc.Core.Internal

        public UnmanagedLibrary(string libraryPath)
        {
-            this.libraryPath = Preconditions.CheckNotNull(libraryPath);
+            this.libraryPath = GrpcPreconditions.CheckNotNull(libraryPath);

            if (!File.Exists(this.libraryPath))
            {
--- a/src/csharp/Grpc.Core/KeyCertificatePair.cs
+++ b/src/csharp/Grpc.Core/KeyCertificatePair.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -54,8 +54,8 @@ namespace Grpc.Core
        /// <param name="privateKey">PEM encoded private key.</param>
        public KeyCertificatePair(string certificateChain, string privateKey)
        {
-            this.certificateChain = Preconditions.CheckNotNull(certificateChain, "certificateChain");
-            this.privateKey = Preconditions.CheckNotNull(privateKey, "privateKey");
+            this.certificateChain = GrpcPreconditions.CheckNotNull(certificateChain, "certificateChain");
+            this.privateKey = GrpcPreconditions.CheckNotNull(privateKey, "privateKey");
        }

        /// <summary>
--- a/src/csharp/Grpc.Core/Marshaller.cs
+++ b/src/csharp/Grpc.Core/Marshaller.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -51,8 +51,8 @@ namespace Grpc.Core
        /// <param name="deserializer">Function that will be used to deserialize messages.</param>
        public Marshaller(Func<T, byte[]> serializer, Func<byte[], T> deserializer)
        {
-            this.serializer = Preconditions.CheckNotNull(serializer, "serializer");
-            this.deserializer = Preconditions.CheckNotNull(deserializer, "deserializer");
+            this.serializer = GrpcPreconditions.CheckNotNull(serializer, "serializer");
+            this.deserializer = GrpcPreconditions.CheckNotNull(deserializer, "deserializer");
        }

        /// <summary>
--- a/src/csharp/Grpc.Core/Metadata.cs
+++ b/src/csharp/Grpc.Core/Metadata.cs
@ -1,5 +1,5 @@
 #region Copyright notice and license
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -179,7 +179,7 @@ namespace Grpc.Core

        private void CheckWriteable()
        {
-            Preconditions.CheckState(!readOnly, "Object is read only");
+            GrpcPreconditions.CheckState(!readOnly, "Object is read only");
        }

        #endregion
@ -211,10 +211,10 @@ namespace Grpc.Core
            public Entry(string key, byte[] valueBytes)
            {
                this.key = NormalizeKey(key);
-                Preconditions.CheckArgument(this.key.EndsWith(BinaryHeaderSuffix),
+                GrpcPreconditions.CheckArgument(this.key.EndsWith(BinaryHeaderSuffix),
                    "Key for binary valued metadata entry needs to have suffix indicating binary value.");
                this.value = null;
-                Preconditions.CheckNotNull(valueBytes, "valueBytes");
+                GrpcPreconditions.CheckNotNull(valueBytes, "valueBytes");
                this.valueBytes = new byte[valueBytes.Length];
                Buffer.BlockCopy(valueBytes, 0, this.valueBytes, 0, valueBytes.Length);  // defensive copy to guarantee immutability
            }
@ -227,9 +227,9 @@ namespace Grpc.Core
            public Entry(string key, string value)
            {
                this.key = NormalizeKey(key);
-                Preconditions.CheckArgument(!this.key.EndsWith(BinaryHeaderSuffix),
+                GrpcPreconditions.CheckArgument(!this.key.EndsWith(BinaryHeaderSuffix),
                    "Key for ASCII valued metadata entry cannot have suffix indicating binary value.");
-                this.value = Preconditions.CheckNotNull(value, "value");
+                this.value = GrpcPreconditions.CheckNotNull(value, "value");
                this.valueBytes = null;
            }

@ -270,7 +270,7 @@ namespace Grpc.Core
            {
                get
                {
-                    Preconditions.CheckState(!IsBinary, "Cannot access string value of a binary metadata entry");
+                    GrpcPreconditions.CheckState(!IsBinary, "Cannot access string value of a binary metadata entry");
                    return value ?? Encoding.GetString(valueBytes);
                }
            }
@ -323,8 +323,8 @@ namespace Grpc.Core

            private static string NormalizeKey(string key)
            {
-                var normalized = Preconditions.CheckNotNull(key, "key").ToLower(CultureInfo.InvariantCulture);
-                Preconditions.CheckArgument(ValidKeyRegex.IsMatch(normalized), 
+                var normalized = GrpcPreconditions.CheckNotNull(key, "key").ToLower(CultureInfo.InvariantCulture);
+                GrpcPreconditions.CheckArgument(ValidKeyRegex.IsMatch(normalized), 
                    "Metadata entry key not valid. Keys can only contain lowercase alphanumeric characters, underscores and hyphens.");
                return normalized;
            }
--- a/src/csharp/Grpc.Core/Method.cs
+++ b/src/csharp/Grpc.Core/Method.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -106,10 +106,10 @@ namespace Grpc.Core
        public Method(MethodType type, string serviceName, string name, Marshaller<TRequest> requestMarshaller, Marshaller<TResponse> responseMarshaller)
        {
            this.type = type;
-            this.serviceName = Preconditions.CheckNotNull(serviceName, "serviceName");
-            this.name = Preconditions.CheckNotNull(name, "name");
-            this.requestMarshaller = Preconditions.CheckNotNull(requestMarshaller, "requestMarshaller");
-            this.responseMarshaller = Preconditions.CheckNotNull(responseMarshaller, "responseMarshaller");
+            this.serviceName = GrpcPreconditions.CheckNotNull(serviceName, "serviceName");
+            this.name = GrpcPreconditions.CheckNotNull(name, "name");
+            this.requestMarshaller = GrpcPreconditions.CheckNotNull(requestMarshaller, "requestMarshaller");
+            this.responseMarshaller = GrpcPreconditions.CheckNotNull(responseMarshaller, "responseMarshaller");
            this.fullName = GetFullName(serviceName, name);
        }

--- a/src/csharp/Grpc.Core/Server.cs
+++ b/src/csharp/Grpc.Core/Server.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -125,7 +125,7 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!startRequested);
+                GrpcPreconditions.CheckState(!startRequested);
                startRequested = true;
                
                handle.Start();
@ -142,8 +142,8 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckState(startRequested);
-                Preconditions.CheckState(!shutdownRequested);
+                GrpcPreconditions.CheckState(startRequested);
+                GrpcPreconditions.CheckState(!shutdownRequested);
                shutdownRequested = true;
            }

@ -162,8 +162,8 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckState(startRequested);
-                Preconditions.CheckState(!shutdownRequested);
+                GrpcPreconditions.CheckState(startRequested);
+                GrpcPreconditions.CheckState(!shutdownRequested);
                shutdownRequested = true;
            }

@ -181,7 +181,7 @@ namespace Grpc.Core

            bool success = false;
            handle.DangerousAddRef(ref success);
-            Preconditions.CheckState(success);
+            GrpcPreconditions.CheckState(success);
        }

        internal void RemoveCallReference(object call)
@ -197,7 +197,7 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckState(!startRequested);
+                GrpcPreconditions.CheckState(!startRequested);
                foreach (var entry in serviceDefinition.CallHandlers)
                {
                    callHandlers.Add(entry.Key, entry.Value);
@ -213,8 +213,8 @@ namespace Grpc.Core
        {
            lock (myLock)
            {
-                Preconditions.CheckNotNull(serverPort.Credentials, "serverPort");
-                Preconditions.CheckState(!startRequested);
+                GrpcPreconditions.CheckNotNull(serverPort.Credentials, "serverPort");
+                GrpcPreconditions.CheckState(!startRequested);
                var address = string.Format("{0}:{1}", serverPort.Host, serverPort.Port);
                int boundPort;
                using (var nativeCredentials = serverPort.Credentials.ToNativeCredentials())
--- a/src/csharp/Grpc.Core/ServerCredentials.cs
+++ b/src/csharp/Grpc.Core/ServerCredentials.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -90,11 +90,11 @@ namespace Grpc.Core
        public SslServerCredentials(IEnumerable<KeyCertificatePair> keyCertificatePairs, string rootCertificates, bool forceClientAuth)
        {
            this.keyCertificatePairs = new List<KeyCertificatePair>(keyCertificatePairs).AsReadOnly();
-            Preconditions.CheckArgument(this.keyCertificatePairs.Count > 0,
+            GrpcPreconditions.CheckArgument(this.keyCertificatePairs.Count > 0,
                "At least one KeyCertificatePair needs to be provided.");
            if (forceClientAuth)
            {
-                Preconditions.CheckNotNull(rootCertificates,
+                GrpcPreconditions.CheckNotNull(rootCertificates,
                    "Cannot force client authentication unless you provide rootCertificates.");
            }
            this.rootCertificates = rootCertificates;
--- a/src/csharp/Grpc.Core/ServerPort.cs
+++ b/src/csharp/Grpc.Core/ServerPort.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -62,9 +62,9 @@ namespace Grpc.Core
        /// <param name="credentials">credentials to use to secure this port.</param>
        public ServerPort(string host, int port, ServerCredentials credentials)
        {
-            this.host = Preconditions.CheckNotNull(host, "host");
+            this.host = GrpcPreconditions.CheckNotNull(host, "host");
            this.port = port;
-            this.credentials = Preconditions.CheckNotNull(credentials, "credentials");
+            this.credentials = GrpcPreconditions.CheckNotNull(credentials, "credentials");
        }

        /// <summary>
--- a/src/csharp/Grpc.Core/Utils/GrpcPreconditions.cs
+++ b/src/csharp/Grpc.Core/Utils/GrpcPreconditions.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -38,7 +38,7 @@ namespace Grpc.Core.Utils
    /// <summary>
    /// Utility methods to simplify checking preconditions in the code.
    /// </summary>
-    public static class Preconditions
+    public static class GrpcPreconditions
    {
        /// <summary>
        /// Throws <see cref="ArgumentException"/> if condition is false.
--- a/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
@ -1,5 +1,5 @@
 #region Copyright notice and license
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -127,8 +127,8 @@ namespace Grpc.HealthCheck
        {
            public Key(string host, string service)
            {
-                this.Host = Preconditions.CheckNotNull(host);
-                this.Service = Preconditions.CheckNotNull(service);
+                this.Host = GrpcPreconditions.CheckNotNull(host);
+                this.Service = GrpcPreconditions.CheckNotNull(service);
            }

            readonly string Host;
--- a/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ClientRunners.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -58,7 +58,7 @@ namespace Grpc.IntegrationTesting
        public static IClientRunner CreateStarted(ClientConfig config)
        {
            string target = config.ServerTargets.Single();
-            Grpc.Core.Utils.Preconditions.CheckArgument(config.LoadParams.LoadCase == LoadParams.LoadOneofCase.ClosedLoop);
+            GrpcPreconditions.CheckArgument(config.LoadParams.LoadCase == LoadParams.LoadOneofCase.ClosedLoop);

            var credentials = config.SecurityParams != null ? TestCredentials.CreateSslCredentials() : ChannelCredentials.Insecure;
            var channel = new Channel(target, credentials);
@ -95,7 +95,7 @@ namespace Grpc.IntegrationTesting
        
        public SyncUnaryClientRunner(Channel channel, int payloadSize, HistogramParams histogramParams)
        {
-            this.channel = Grpc.Core.Utils.Preconditions.CheckNotNull(channel);
+            this.channel = GrpcPreconditions.CheckNotNull(channel);
            this.payloadSize = payloadSize;
            this.histogram = new Histogram(histogramParams.Resolution, histogramParams.MaxPossible);

--- a/src/csharp/Grpc.IntegrationTesting/Histogram.cs
+++ b/src/csharp/Grpc.IntegrationTesting/Histogram.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -66,8 +66,8 @@ namespace Grpc.IntegrationTesting

        public Histogram(double resolution, double maxPossible)
        {
-            Grpc.Core.Utils.Preconditions.CheckArgument(resolution > 0);
-            Grpc.Core.Utils.Preconditions.CheckArgument(maxPossible > 0);
+            GrpcPreconditions.CheckArgument(resolution > 0);
+            GrpcPreconditions.CheckArgument(maxPossible > 0);
            this.maxPossible = maxPossible;
            this.multiplier = 1.0 + resolution;
            this.oneOnLogMultiplier = 1.0 / Math.Log(1.0 + resolution);
--- a/src/csharp/Grpc.IntegrationTesting/ServerRunners.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ServerRunners.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -57,7 +57,7 @@ namespace Grpc.IntegrationTesting
        /// </summary>
        public static IServerRunner CreateStarted(ServerConfig config)
        {
-            Grpc.Core.Utils.Preconditions.CheckArgument(config.ServerType == ServerType.ASYNC_SERVER);
+            GrpcPreconditions.CheckArgument(config.ServerType == ServerType.ASYNC_SERVER);
            var credentials = config.SecurityParams != null ? TestCredentials.CreateSslServerCredentials() : ServerCredentials.Insecure;

            // TODO: qps_driver needs to setup payload properly...
@ -83,7 +83,7 @@ namespace Grpc.IntegrationTesting

        public ServerRunnerImpl(Server server)
        {
-            this.server = Grpc.Core.Utils.Preconditions.CheckNotNull(server);
+            this.server = GrpcPreconditions.CheckNotNull(server);
        }

        public int BoundPort
--- a/src/csharp/Grpc.IntegrationTesting/WorkerServiceImpl.cs
+++ b/src/csharp/Grpc.IntegrationTesting/WorkerServiceImpl.cs
@ -1,6 +1,6 @@
 #region Copyright notice and license

-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@ -49,7 +49,7 @@ namespace Grpc.Testing
    {
        public async Task RunServer(IAsyncStreamReader<ServerArgs> requestStream, IServerStreamWriter<ServerStatus> responseStream, ServerCallContext context)
        {
-            Grpc.Core.Utils.Preconditions.CheckState(await requestStream.MoveNext());
+            GrpcPreconditions.CheckState(await requestStream.MoveNext());
            var serverConfig = requestStream.Current.Setup;
            var runner = ServerRunners.CreateStarted(serverConfig);

@ -73,7 +73,7 @@ namespace Grpc.Testing

        public async Task RunClient(IAsyncStreamReader<ClientArgs> requestStream, IServerStreamWriter<ClientStatus> responseStream, ServerCallContext context)
        {
-            Grpc.Core.Utils.Preconditions.CheckState(await requestStream.MoveNext());
+            GrpcPreconditions.CheckState(await requestStream.MoveNext());
            var clientConfig = requestStream.Current.Setup;
            var runner = ClientRunners.CreateStarted(clientConfig);

--- a/src/node/ext/call_credentials.cc
+++ b/src/node/ext/call_credentials.cc
@ -1,6 +1,6 @@
 /*
 *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -187,7 +187,8 @@ NAN_METHOD(PluginCallback) {
  shared_ptr<Resources> resources(new Resources);
  grpc_status_code code = static_cast<grpc_status_code>(
      Nan::To<uint32_t>(info[0]).FromJust());
-  char *details = *Utf8String(info[1]);
+  Utf8String details_utf8_str(info[1]);
+  char *details = *details_utf8_str;
  grpc_metadata_array array;
  if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(),
                           &array, resources)){
--- a/src/node/ext/node_grpc.cc
+++ b/src/node/ext/node_grpc.cc
@ -237,7 +237,8 @@ NAN_METHOD(MetadataKeyIsLegal) {
        "headerKeyIsLegal's argument must be a string");
  }
  Local<String> key = Nan::To<String>(info[0]).ToLocalChecked();
-  char *key_str = *Nan::Utf8String(key);
+  Nan::Utf8String key_utf8_str(key);
+  char *key_str = *key_utf8_str;
  info.GetReturnValue().Set(static_cast<bool>(
      grpc_header_key_is_legal(key_str, static_cast<size_t>(key->Length()))));
 }
@ -248,7 +249,8 @@ NAN_METHOD(MetadataNonbinValueIsLegal) {
        "metadataNonbinValueIsLegal's argument must be a string");
  }
  Local<String> value = Nan::To<String>(info[0]).ToLocalChecked();
-  char *value_str = *Nan::Utf8String(value);
+  Nan::Utf8String value_utf8_str(value);
+  char *value_str = *value_utf8_str;
  info.GetReturnValue().Set(static_cast<bool>(
      grpc_header_nonbin_value_is_legal(
          value_str, static_cast<size_t>(value->Length()))));
@ -260,7 +262,8 @@ NAN_METHOD(MetadataKeyIsBinary) {
        "metadataKeyIsLegal's argument must be a string");
  }
  Local<String> key = Nan::To<String>(info[0]).ToLocalChecked();
-  char *key_str = *Nan::Utf8String(key);
+  Nan::Utf8String key_utf8_str(key);
+  char *key_str = *key_utf8_str;
  info.GetReturnValue().Set(static_cast<bool>(
      grpc_is_binary_header(key_str, static_cast<size_t>(key->Length()))));
 }
--- a/src/node/index.js
+++ b/src/node/index.js
@ -56,17 +56,18 @@ var grpc = require('./src/grpc_extension');
 /**
 * Load a gRPC object from an existing ProtoBuf.Reflect object.
 * @param {ProtoBuf.Reflect.Namespace} value The ProtoBuf object to load.
+ * @param {Object=} options Options to apply to the loaded object
 * @return {Object<string, *>} The resulting gRPC object
 */
-exports.loadObject = function loadObject(value) {
+exports.loadObject = function loadObject(value, options) {
  var result = {};
  if (value.className === 'Namespace') {
    _.each(value.children, function(child) {
-      result[child.name] = loadObject(child);
+      result[child.name] = loadObject(child, options);
    });
    return result;
  } else if (value.className === 'Service') {
-    return client.makeProtobufClientConstructor(value);
+    return client.makeProtobufClientConstructor(value, options);
  } else if (value.className === 'Message' || value.className === 'Enum') {
    return value.build();
  } else {
@ -77,28 +78,45 @@ exports.loadObject = function loadObject(value) {
 var loadObject = exports.loadObject;

 /**
- * Load a gRPC object from a .proto file.
- * @param {string} filename The file to load
+ * Load a gRPC object from a .proto file. The options object can provide the
+ * following options:
+ * - convertFieldsToCamelCase: Loads this file with that option on protobuf.js
+ *   set as specified. See
+ *   https://github.com/dcodeIO/protobuf.js/wiki/Advanced-options for details
+ * - binaryAsBase64: deserialize bytes values as base64 strings instead of
+ *   Buffers. Defaults to false
+ * - longsAsStrings: deserialize long values as strings instead of objects.
+ *   Defaults to true
+ * @param {string|{root: string, file: string}} filename The file to load
 * @param {string=} format The file format to expect. Must be either 'proto' or
 *     'json'. Defaults to 'proto'
+ * @param {Object=} options Options to apply to the loaded file
 * @return {Object<string, *>} The resulting gRPC object
 */
-exports.load = function load(filename, format) {
+exports.load = function load(filename, format, options) {
  if (!format) {
    format = 'proto';
  }
+  var convertFieldsToCamelCaseOriginal = ProtoBuf.convertFieldsToCamelCase;
+  if(options && options.hasOwnProperty('convertFieldsToCamelCase')) {
+    ProtoBuf.convertFieldsToCamelCase = options.convertFieldsToCamelCase;
+  }
  var builder;
-  switch(format) {
-    case 'proto':
-    builder = ProtoBuf.loadProtoFile(filename);
-    break;
-    case 'json':
-    builder = ProtoBuf.loadJsonFile(filename);
-    break;
-    default:
-    throw new Error('Unrecognized format "' + format + '"');
+  try {
+    switch(format) {
+      case 'proto':
+      builder = ProtoBuf.loadProtoFile(filename);
+      break;
+      case 'json':
+      builder = ProtoBuf.loadJsonFile(filename);
+      break;
+      default:
+      throw new Error('Unrecognized format "' + format + '"');
+    }
+  } finally {
+    ProtoBuf.convertFieldsToCamelCase = convertFieldsToCamelCaseOriginal;
  }
-  return loadObject(builder.ns);
+  return loadObject(builder.ns, options);
 };

 /**
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@ -648,8 +648,8 @@ exports.makeClientConstructor = function(methods, serviceName) {
    var deserialize = attrs.responseDeserialize;
    Client.prototype[name] = requester_makers[method_type](
        attrs.path, serialize, deserialize);
-    Client.prototype[name].serialize = serialize;
-    Client.prototype[name].deserialize = deserialize;
+    // Associate all provided attributes with the method
+    _.assign(Client.prototype[name], attrs);
  });

  return Client;
@ -698,13 +698,16 @@ exports.waitForClientReady = function(client, deadline, callback) {
 * Creates a constructor for clients for the given service
 * @param {ProtoBuf.Reflect.Service} service The service to generate a client
 *     for
+ * @param {Object=} options Options to apply to the client
 * @return {function(string, Object)} New client constructor
 */
-exports.makeProtobufClientConstructor =  function(service) {
-  var method_attrs = common.getProtobufServiceAttrs(service, service.name);
+exports.makeProtobufClientConstructor =  function(service, options) {
+  var method_attrs = common.getProtobufServiceAttrs(service, service.name,
+                                                    options);
  var Client = exports.makeClientConstructor(
      method_attrs, common.fullyQualifiedName(service));
  Client.service = service;
+  Client.service.grpc_options = options;
  return Client;
 };

--- a/src/node/src/common.js
+++ b/src/node/src/common.js
@ -44,9 +44,20 @@ var _ = require('lodash');
 /**
 * Get a function that deserializes a specific type of protobuf.
 * @param {function()} cls The constructor of the message type to deserialize
+ * @param {bool=} binaryAsBase64 Deserialize bytes fields as base64 strings
+ *     instead of Buffers. Defaults to false
+ * @param {bool=} longsAsStrings Deserialize long values as strings instead of
+ *     objects. Defaults to true
 * @return {function(Buffer):cls} The deserialization function
 */
-exports.deserializeCls = function deserializeCls(cls) {
+exports.deserializeCls = function deserializeCls(cls, binaryAsBase64,
+                                                 longsAsStrings) {
+  if (binaryAsBase64 === undefined || binaryAsBase64 === null) {
+    binaryAsBase64 = false;
+  }
+  if (longsAsStrings === undefined || longsAsStrings === null) {
+    longsAsStrings = true;
+  }
  /**
   * Deserialize a buffer to a message object
   * @param {Buffer} arg_buf The buffer to deserialize
@ -55,7 +66,7 @@ exports.deserializeCls = function deserializeCls(cls) {
  return function deserialize(arg_buf) {
    // Convert to a native object with binary fields as Buffers (first argument)
    // and longs as strings (second argument)
-    return cls.decode(arg_buf).toRaw(false, true);
+    return cls.decode(arg_buf).toRaw(binaryAsBase64, longsAsStrings);
  };
 };

@ -119,19 +130,30 @@ exports.wrapIgnoreNull = function wrapIgnoreNull(func) {
 /**
 * Return a map from method names to method attributes for the service.
 * @param {ProtoBuf.Reflect.Service} service The service to get attributes for
+ * @param {Object=} options Options to apply to these attributes
 * @return {Object} The attributes map
 */
-exports.getProtobufServiceAttrs = function getProtobufServiceAttrs(service) {
+exports.getProtobufServiceAttrs = function getProtobufServiceAttrs(service,
+                                                                   options) {
  var prefix = '/' + fullyQualifiedName(service) + '/';
+  var binaryAsBase64, longsAsStrings;
+  if (options) {
+    binaryAsBase64 = options.binaryAsBase64;
+    longsAsStrings = options.longsAsStrings;
+  }
  return _.object(_.map(service.children, function(method) {
    return [_.camelCase(method.name), {
      path: prefix + method.name,
      requestStream: method.requestStream,
      responseStream: method.responseStream,
+      requestType: method.resolvedRequestType,
+      responseType: method.resolvedResponseType,
      requestSerialize: serializeCls(method.resolvedRequestType.build()),
-      requestDeserialize: deserializeCls(method.resolvedRequestType.build()),
+      requestDeserialize: deserializeCls(method.resolvedRequestType.build(),
+                                     binaryAsBase64, longsAsStrings),
      responseSerialize: serializeCls(method.resolvedResponseType.build()),
-      responseDeserialize: deserializeCls(method.resolvedResponseType.build())
+      responseDeserialize: deserializeCls(method.resolvedResponseType.build(),
+                                     binaryAsBase64, longsAsStrings)
    }];
  }));
 };
--- a/src/node/src/credentials.js
+++ b/src/node/src/credentials.js
@ -98,6 +98,8 @@ exports.createFromMetadataGenerator = function(metadata_generator) {
        message = error.message;
        if (error.hasOwnProperty('code')) {
          code = error.code;
+        } else {
+          code = grpc.status.UNAUTHENTICATED;
        }
        if (!metadata) {
          metadata = new Metadata();
@ -116,13 +118,16 @@ exports.createFromMetadataGenerator = function(metadata_generator) {
 exports.createFromGoogleCredential = function(google_credential) {
  return exports.createFromMetadataGenerator(function(auth_context, callback) {
    var service_url = auth_context.service_url;
+    console.log('Service URL:', service_url);
    google_credential.getRequestMetadata(service_url, function(err, header) {
      if (err) {
+        console.log('Auth error:', err);
        callback(err);
        return;
      }
      var metadata = new Metadata();
      metadata.add('authorization', header.Authorization);
+      console.log(header.Authorization);
      callback(null, metadata);
    });
  });
--- a/src/node/src/metadata.js
+++ b/src/node/src/metadata.js
@ -64,7 +64,7 @@ function normalizeKey(key) {
  if (grpc.metadataKeyIsLegal(key)) {
    return key;
  } else {
-    throw new Error('Metadata key contains illegal characters');
+    throw new Error('Metadata key"' + key + '" contains illegal characters');
  }
 }

@ -79,7 +79,8 @@ function validate(key, value) {
          'keys that don\'t end with \'-bin\' must have String values');
    }
    if (!grpc.metadataNonbinValueIsLegal(value)) {
-      throw new Error('Metadata string value contains illegal characters');
+      throw new Error('Metadata string value "' + value +
+                      '" contains illegal characters');
    }
  }
 }
--- a/src/node/src/server.js
+++ b/src/node/src/server.js
@ -737,7 +737,12 @@ Server.prototype.addService = function(service, implementation) {
 *     method implementation for the provided service.
 */
 Server.prototype.addProtoService = function(service, implementation) {
-  this.addService(common.getProtobufServiceAttrs(service), implementation);
+  var options;
+  if (service.grpc_options) {
+    options = service.grpc_options;
+  }
+  this.addService(common.getProtobufServiceAttrs(service, options),
+                  implementation);
 };

 /**
--- a/src/node/test/common_test.js
+++ b/src/node/test/common_test.js
@ -1,6 +1,6 @@
 /*
 *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -42,7 +42,7 @@ var ProtoBuf = require('protobufjs');
 var messages_proto = ProtoBuf.loadProtoFile(
    __dirname + '/test_messages.proto').build();

-describe('Proto message serialize and deserialize', function() {
+describe('Proto message long int serialize and deserialize', function() {
  var longSerialize = common.serializeCls(messages_proto.LongValues);
  var longDeserialize = common.deserializeCls(messages_proto.LongValues);
  var pos_value = '314159265358979';
@ -87,4 +87,52 @@ describe('Proto message serialize and deserialize', function() {
    assert.strictEqual(longDeserialize(serialized).sfixed_64.toString(),
                       neg_value);
  });
+  it('should deserialize as a number with the right option set', function() {
+    var longNumDeserialize = common.deserializeCls(messages_proto.LongValues,
+                                                   false, false);
+    var serialized = longSerialize({int_64: pos_value});
+    assert.strictEqual(typeof longDeserialize(serialized).int_64, 'string');
+    /* With the longsAsStrings option disabled, long values are represented as
+     * objects with 3 keys: low, high, and unsigned */
+    assert.strictEqual(typeof longNumDeserialize(serialized).int_64, 'object');
+  });
+});
+describe('Proto message bytes serialize and deserialize', function() {
+  var sequenceSerialize = common.serializeCls(messages_proto.SequenceValues);
+  var sequenceDeserialize = common.deserializeCls(
+      messages_proto.SequenceValues);
+  var sequenceBase64Deserialize = common.deserializeCls(
+      messages_proto.SequenceValues, true);
+  var buffer_val = new Buffer([0x69, 0xb7]);
+  var base64_val = 'abc=';
+  it('should preserve a buffer', function() {
+    var serialized = sequenceSerialize({bytes_field: buffer_val});
+    var deserialized = sequenceDeserialize(serialized);
+    assert.strictEqual(deserialized.bytes_field.compare(buffer_val), 0);
+  });
+  it('should accept base64 encoded strings', function() {
+    var serialized = sequenceSerialize({bytes_field: base64_val});
+    var deserialized = sequenceDeserialize(serialized);
+    assert.strictEqual(deserialized.bytes_field.compare(buffer_val), 0);
+  });
+  it('should output base64 encoded strings with an option set', function() {
+    var serialized = sequenceSerialize({bytes_field: base64_val});
+    var deserialized = sequenceBase64Deserialize(serialized);
+    assert.strictEqual(deserialized.bytes_field, base64_val);
+  });
+  /* The next two tests are specific tests to verify that issue
+   * https://github.com/grpc/grpc/issues/5174 has been fixed. They are skipped
+   * because they will not pass until a protobuf.js release has been published
+   * with a fix for https://github.com/dcodeIO/protobuf.js/issues/390 */
+  it.skip('should serialize a repeated field as packed by default', function() {
+    var expected_serialize = new Buffer([0x12, 0x01, 0x01, 0x0a]);
+    var serialized = sequenceSerialize({repeated_field: [10]});
+    assert.strictEqual(expected_serialize.compare(serialized), 0);
+  });
+  it.skip('should deserialize packed or unpacked repeated', function() {
+    var serialized = new Buffer([0x12, 0x01, 0x01, 0x0a]);
+    assert.doesNotThrow(function() {
+      sequenceDeserialize(serialized);
+    });
+  });
 });
--- a/src/node/test/test_messages.proto
+++ b/src/node/test/test_messages.proto
@ -36,3 +36,8 @@ message LongValues {
  fixed64 fixed_64 = 4;
  sfixed64 sfixed_64 = 5;
 }
+
+message SequenceValues {
+  bytes bytes_field = 1;
+  repeated int32 repeated_field = 2;
+}
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@ -73,27 +73,6 @@ CORE_SOURCE_FILES = [
  'src/core/support/time_win32.c',
  'src/core/support/tls_pthread.c',
  'src/core/support/wrap_memcpy.c',
-  'src/core/httpcli/httpcli_security_connector.c',
-  'src/core/security/base64.c',
-  'src/core/security/client_auth_filter.c',
-  'src/core/security/credentials.c',
-  'src/core/security/credentials_metadata.c',
-  'src/core/security/credentials_posix.c',
-  'src/core/security/credentials_win32.c',
-  'src/core/security/google_default_credentials.c',
-  'src/core/security/handshake.c',
-  'src/core/security/json_token.c',
-  'src/core/security/jwt_verifier.c',
-  'src/core/security/secure_endpoint.c',
-  'src/core/security/security_connector.c',
-  'src/core/security/security_context.c',
-  'src/core/security/server_auth_filter.c',
-  'src/core/security/server_secure_chttp2.c',
-  'src/core/surface/init_secure.c',
-  'src/core/surface/secure_channel_create.c',
-  'src/core/tsi/fake_transport_security.c',
-  'src/core/tsi/ssl_transport_security.c',
-  'src/core/tsi/transport_security.c',
  'src/core/census/grpc_context.c',
  'src/core/census/grpc_filter.c',
  'src/core/channel/channel_args.c',
@ -222,9 +201,30 @@ CORE_SOURCE_FILES = [
  'src/core/transport/static_metadata.c',
  'src/core/transport/transport.c',
  'src/core/transport/transport_op_string.c',
+  'src/core/httpcli/httpcli_security_connector.c',
+  'src/core/security/base64.c',
+  'src/core/security/client_auth_filter.c',
+  'src/core/security/credentials.c',
+  'src/core/security/credentials_metadata.c',
+  'src/core/security/credentials_posix.c',
+  'src/core/security/credentials_win32.c',
+  'src/core/security/google_default_credentials.c',
+  'src/core/security/handshake.c',
+  'src/core/security/json_token.c',
+  'src/core/security/jwt_verifier.c',
+  'src/core/security/secure_endpoint.c',
+  'src/core/security/security_connector.c',
+  'src/core/security/security_context.c',
+  'src/core/security/server_auth_filter.c',
+  'src/core/security/server_secure_chttp2.c',
+  'src/core/surface/init_secure.c',
+  'src/core/surface/secure_channel_create.c',
+  'src/core/tsi/fake_transport_security.c',
+  'src/core/tsi/ssl_transport_security.c',
+  'src/core/tsi/transport_security.c',
  'src/core/census/context.c',
  'src/core/census/initialize.c',
-  'src/core/census/log.c',
+  'src/core/census/mlog.c',
  'src/core/census/operation.c',
  'src/core/census/placeholders.c',
  'src/core/census/tracing.c',
--- a/summerofcode/ideas.md
+++ b/summerofcode/ideas.md
@ -0,0 +1,4 @@
+Google Summer of Code 2016 gRPC Ideas
+=====================================
+
+(Skeleton for now.)
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@ -159,7 +159,7 @@
  else
  ifeq ($(SYSTEM),Darwin)
  ifeq ($(origin AR), default)
-  AR = libtool -o
+  AR = libtool -no_warning_for_no_symbols -o
  endif
  STRIP ?= strip -x
  else
@ -790,18 +790,22 @@

  static_c: pc_c pc_c_unsecure cache.mk pc_c_zookeeper\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c' and not lib.get('external_deps', None):
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor
   static_zookeeper_libs


  static_cxx: pc_cxx pc_cxx_unsecure cache.mk \
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c++':
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor


@ -809,40 +813,50 @@

  shared_c: pc_c pc_c_unsecure cache.mk pc_c_zookeeper\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c' and not lib.get('external_deps', None):
   $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)\
  % endif
+  % endif
  % endfor
   shared_zookeeper_libs

  shared_cxx: pc_cxx pc_cxx_unsecure cache.mk\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c++':
   $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)\
  % endif
+  % endif
  % endfor


  shared_csharp: shared_c \
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'csharp':
   $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)\
  % endif
+  % endif
  % endfor

  ifeq ($(HAS_ZOOKEEPER),true)
  static_zookeeper_libs:\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c' and 'zookeeper' in lib.get('external_deps', []):
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor

  shared_zookeeper_libs:\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'all' and lib.language == 'c' and 'zookeeper' in lib.get('external_deps', []):
   $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)\
  % endif
+  % endif
  % endfor

  else
@ -861,9 +875,11 @@

  privatelibs_c: \
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'private' and lib.language == 'c' and not lib.get('external_deps', None) and not lib.boringssl:
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor

  pc_c: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc
@ -882,18 +898,22 @@

  privatelibs_cxx: \
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'private' and lib.language == 'c++' and not lib.get('external_deps', None):
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor


  ifeq ($(HAS_ZOOKEEPER),true)
  privatelibs_zookeeper: \
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.build == 'private' and lib.language == 'c++' and zookeeper in lib.get('external_deps', []):
   $(LIBDIR)/$(CONFIG)/lib${lib.name}.a\
  % endif
+  % endif
  % endfor

  else
@ -1044,6 +1064,7 @@
  strip-static_c: static_c
  ifeq ($(CONFIG),opt)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if not lib.get('external_deps', None):
@ -1052,9 +1073,11 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  ifeq ($(HAS_ZOOKEEPER),true)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if 'zookeeper' in lib.get('external_deps', []):
@ -1063,6 +1086,7 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  endif
  endif
@ -1070,18 +1094,21 @@
  strip-static_cxx: static_cxx
  ifeq ($(CONFIG),opt)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c++":
  % if lib.build == "all":
  	$(E) "[STRIP]   Stripping lib${lib.name}.a"
  	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a
  % endif
  % endif
+  % endif
  % endfor
  endif

  strip-shared_c: shared_c
  ifeq ($(CONFIG),opt)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if not lib.get('external_deps', None):
@ -1090,9 +1117,11 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  ifeq ($(HAS_ZOOKEEPER),true)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if 'zookeeper' in lib.get('external_deps', []):
@ -1101,6 +1130,7 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  endif
  endif
@ -1108,24 +1138,28 @@
  strip-shared_cxx: shared_cxx
  ifeq ($(CONFIG),opt)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c++":
  % if lib.build == "all":
  	$(E) "[STRIP]   Stripping $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)"
  	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)
  % endif
  % endif
+  % endif
  % endfor
  endif

  strip-shared_csharp: shared_csharp
  ifeq ($(CONFIG),opt)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "csharp":
  % if lib.build == "all":
  	$(E) "[STRIP]   Stripping $(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)"
  	$(Q) $(STRIP) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)${lib.name}$(SHARED_VERSION).$(SHARED_EXT)
  % endif
  % endif
+  % endif
  % endfor
  endif

@ -1234,6 +1268,7 @@

  install-static_c: static_c strip-static_c install-pkg-config_c
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if not lib.get('external_deps', None):
@ -1243,9 +1278,11 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  ifeq ($(HAS_ZOOKEEPER),true)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c":
  % if lib.build == "all":
  % if 'zookeeper' in lib.get('external_deps', []):
@ -1255,11 +1292,13 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  endif

  install-static_cxx: static_cxx strip-static_cxx install-pkg-config_cxx
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == "c++":
  % if lib.build == "all":
  	$(E) "[INSTALL] Installing lib${lib.name}.a"
@ -1267,10 +1306,12 @@
  	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/lib${lib.name}.a $(prefix)/lib/lib${lib.name}.a
  % endif
  % endif
+  % endif
  % endfor

  <%def name="install_shared(lang_filter)">\
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == lang_filter:
  % if lib.build == "all":
  % if not lib.get('external_deps', None):
@ -1286,9 +1327,11 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  ifeq ($(HAS_ZOOKEEPER),true)
  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  % if lib.language == lang_filter:
  % if lib.build == "all":
  % if 'zookeeper' in lib.get('external_deps', []):
@ -1304,6 +1347,7 @@
  % endif
  % endif
  % endif
+  % endif
  % endfor
  endif
  ifneq ($(SYSTEM),MINGW32)
@ -1383,7 +1427,9 @@
  # The various libraries

  % for lib in libs:
+  % if 'Makefile' in lib.get('build_system', ['Makefile']):
  ${makelib(lib)}
+  % endif
  % endfor


@ -1498,7 +1544,7 @@
  % endif

  ifeq ($(SYSTEM),Darwin)
-  	$(Q) ranlib $(LIBDIR)/$(CONFIG)/lib${lib.name}.a
+  	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/lib${lib.name}.a
  endif

  <%
--- a/templates/vsprojects/vcxproj.filters_defs.include
+++ b/templates/vsprojects/vcxproj.filters_defs.include
@ -23,6 +23,11 @@
    % endfor
  </ItemGroup>
  % endif
+  % if project.get('dll_def', None):
+  <ItemGroup>
+    <None Include="${get_repo_root(project)}\${to_windows_path(project.dll_def)}" />
+  </ItemGroup>
+  % endif
  % if project.get('public_headers',[]):
  <ItemGroup>
    % for public_header in project.public_headers:
--- a/templates/vsprojects/vcxproj_defs.include
+++ b/templates/vsprojects/vcxproj_defs.include
@ -2,6 +2,9 @@
 <%def name="to_windows_path(path)">${path.replace('/','\\')}</%def>\
 <%def name="get_subsystem(is_library)">${'Windows' if is_library else 'Console'}</%def>\
 <%def name="item_definition_group(project, target, debug, dll, _64bit)">\
+<%
+  repo_root = '$(SolutionDir)\..'
+%>\
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='${'%s%s|%s' % ('Debug' if debug else 'Release', '-DLL' if dll else '', 'x64' if _64bit else 'Win32')}'">
    <ClCompile>
      <PrecompiledHeader>NotUsing</PrecompiledHeader>
@ -23,6 +26,12 @@
      <SubSystem>${get_subsystem(project.is_library)}</SubSystem>
      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+% if project.get("noentry", False):
+      <NoEntryPoint>true</NoEntryPoint>
+% endif
+% if project.get("dll_def", None):
+      <ModuleDefinitionFile>${repo_root}\${to_windows_path(project.dll_def)}</ModuleDefinitionFile>
+% endif
 % if not debug:
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
@ -194,6 +203,11 @@ ${gen_package_props(packages, repo_root)}\
    % endfor
  </ItemGroup>
  % endif
+  % if project.get('dll_def', None):
+  <ItemGroup>
+    <None Include="${repo_root}\${to_windows_path(project.dll_def)}" />
+  </ItemGroup>
+  % endif
  % if project.get('src',[]):
  <ItemGroup>
    % for src_name in project.src:
--- a/test/core/census/mlog_test.c
+++ b/test/core/census/mlog_test.c
@ -31,7 +31,7 @@
 *
 */

-#include "src/core/census/log.h"
+#include "src/core/census/mlog.h"
 #include <grpc/support/cpu.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@ -43,6 +43,7 @@
 #include <grpc/grpc.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
+#include <grpc/support/tls.h>
 #include <gtest/gtest.h>

 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
@ -59,6 +60,8 @@ using grpc::testing::EchoRequest;
 using grpc::testing::EchoResponse;
 using std::chrono::system_clock;

+GPR_TLS_DECL(g_is_async_end2end_test);
+
 namespace grpc {
 namespace testing {

@ -67,9 +70,11 @@ namespace {
 void* tag(int i) { return (void*)(intptr_t)i; }

 #ifdef GPR_POSIX_SOCKET
-static int assert_non_blocking_poll(struct pollfd* pfds, nfds_t nfds,
-                                    int timeout) {
-  GPR_ASSERT(timeout == 0);
+static int maybe_assert_non_blocking_poll(struct pollfd* pfds, nfds_t nfds,
+                                          int timeout) {
+  if (gpr_tls_get(&g_is_async_end2end_test)) {
+    GPR_ASSERT(timeout == 0);
+  }
  return poll(pfds, nfds, timeout);
 }

@ -86,21 +91,21 @@ class PollOverride {
  grpc_poll_function_type prev_;
 };

-class PollingCheckRegion : public PollOverride {
+class PollingOverrider : public PollOverride {
 public:
-  explicit PollingCheckRegion(bool allow_blocking)
-      : PollOverride(allow_blocking ? poll : assert_non_blocking_poll) {}
+  explicit PollingOverrider(bool allow_blocking)
+      : PollOverride(allow_blocking ? poll : maybe_assert_non_blocking_poll) {}
 };
 #else
-class PollingCheckRegion {
+class PollingOverrider {
 public:
-  explicit PollingCheckRegion(bool allow_blocking) {}
+  explicit PollingOverrider(bool allow_blocking) {}
 };
 #endif

-class Verifier : public PollingCheckRegion {
+class Verifier {
 public:
-  explicit Verifier(bool spin) : PollingCheckRegion(!spin), spin_(spin) {}
+  explicit Verifier(bool spin) : spin_(spin) {}
  Verifier& Expect(int i, bool expect_ok) {
    expectations_[tag(i)] = expect_ok;
    return *this;
@ -183,6 +188,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<bool> {
  AsyncEnd2endTest() {}

  void SetUp() GRPC_OVERRIDE {
+    poll_overrider_.reset(new PollingOverrider(!GetParam()));
+
    int port = grpc_pick_unused_port_or_die();
    server_address_ << "localhost:" << port;

@ -193,6 +200,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<bool> {
    builder.RegisterService(&service_);
    cq_ = builder.AddCompletionQueue();
    server_ = builder.BuildAndStart();
+
+    gpr_tls_set(&g_is_async_end2end_test, 1);
  }

  void TearDown() GRPC_OVERRIDE {
@ -202,6 +211,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<bool> {
    cq_->Shutdown();
    while (cq_->Next(&ignored_tag, &ignored_ok))
      ;
+    poll_overrider_.reset();
+    gpr_tls_set(&g_is_async_end2end_test, 0);
  }

  void ResetStub() {
@ -249,6 +260,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<bool> {
  std::unique_ptr<Server> server_;
  grpc::testing::EchoTestService::AsyncService service_;
  std::ostringstream server_address_;
+
+  std::unique_ptr<PollingOverrider> poll_overrider_;
 };

 TEST_P(AsyncEnd2endTest, SimpleRpc) {
@ -1087,7 +1100,7 @@ class AsyncEnd2endServerTryCancelTest : public AsyncEnd2endTest {
    Verifier(GetParam()).Expect(7, true).Verify(cq_.get());

    // This is expected to fail in all cases i.e for all values of
-    // server_try_cancel. This is becasue at this point, either there are no
+    // server_try_cancel. This is because at this point, either there are no
    // more msgs from the client (because client called WritesDone) or the RPC
    // is cancelled on the server
    srv_stream.Read(&recv_request, tag(8));
@ -1164,6 +1177,9 @@ INSTANTIATE_TEST_CASE_P(AsyncEnd2endServerTryCancel,

 int main(int argc, char** argv) {
  grpc_test_init(argc, argv);
+  gpr_tls_init(&g_is_async_end2end_test);
  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
+  int ret = RUN_ALL_TESTS();
+  gpr_tls_destroy(&g_is_async_end2end_test);
+  return ret;
 }
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@ -51,11 +51,11 @@
 #include "src/core/security/credentials.h"
 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
-#include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/end2end/test_service_impl.h"
 #include "test/cpp/util/string_ref_helper.h"
+#include "test/cpp/util/test_credentials_provider.h"

 using grpc::testing::EchoRequest;
 using grpc::testing::EchoResponse;
@ -191,12 +191,14 @@ class TestServiceImplDupPkg

 class TestScenario {
 public:
-  TestScenario(bool proxy, bool tls) : use_proxy(proxy), use_tls(tls) {}
+  TestScenario(bool proxy, const grpc::string& creds_type)
+      : use_proxy(proxy), credentials_type(creds_type) {}
  void Log() const {
-    gpr_log(GPR_INFO, "Scenario: proxy %d, tls %d", use_proxy, use_tls);
+    gpr_log(GPR_INFO, "Scenario: proxy %d, credentials %s", use_proxy,
+            credentials_type.c_str());
  }
  bool use_proxy;
-  bool use_tls;
+  const grpc::string credentials_type;
 };

 class End2endTest : public ::testing::TestWithParam<TestScenario> {
@ -220,14 +222,8 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
    server_address_ << "127.0.0.1:" << port;
    // Setup server
    ServerBuilder builder;
-    auto server_creds = InsecureServerCredentials();
-    if (GetParam().use_tls) {
-      SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
-                                                          test_server1_cert};
-      SslServerCredentialsOptions ssl_opts;
-      ssl_opts.pem_root_certs = "";
-      ssl_opts.pem_key_cert_pairs.push_back(pkcp);
-      server_creds = SslServerCredentials(ssl_opts);
+    auto server_creds = GetServerCredentials(GetParam().credentials_type);
+    if (GetParam().credentials_type != kInsecureCredentialsType) {
      server_creds->SetAuthMetadataProcessor(processor);
    }
    builder.AddListeningPort(server_address_.str(), server_creds);
@ -246,12 +242,8 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
    }
    EXPECT_TRUE(is_server_started_);
    ChannelArguments args;
-    auto channel_creds = InsecureChannelCredentials();
-    if (GetParam().use_tls) {
-      SslCredentialsOptions ssl_opts = {test_root_cert, "", ""};
-      args.SetSslTargetNameOverride("foo.test.google.fr");
-      channel_creds = SslCredentials(ssl_opts);
-    }
+    auto channel_creds =
+        GetChannelCredentials(GetParam().credentials_type, &args);
    if (!user_agent_prefix_.empty()) {
      args.SetUserAgentPrefix(user_agent_prefix_);
    }
@ -941,7 +933,7 @@ TEST_P(End2endTest, ChannelState) {

 // Takes 10s.
 TEST_P(End2endTest, ChannelStateTimeout) {
-  if (GetParam().use_tls) {
+  if (GetParam().credentials_type != kInsecureCredentialsType) {
    return;
  }
  int port = grpc_pick_unused_port_or_die();
@ -1150,7 +1142,7 @@ class SecureEnd2endTest : public End2endTest {
 protected:
  SecureEnd2endTest() {
    GPR_ASSERT(!GetParam().use_proxy);
-    GPR_ASSERT(GetParam().use_tls);
+    GPR_ASSERT(GetParam().credentials_type != kInsecureCredentialsType);
  }
 };

@ -1373,21 +1365,42 @@ TEST_P(SecureEnd2endTest, ClientAuthContext) {
  EXPECT_EQ("*.test.youtube.com", ToString(auth_ctx->GetPeerIdentity()[2]));
 }

+std::vector<TestScenario> CreateTestScenarios(bool use_proxy,
+                                              bool test_insecure,
+                                              bool test_secure) {
+  std::vector<TestScenario> scenarios;
+  std::vector<grpc::string> credentials_types;
+  if (test_secure) {
+    credentials_types = GetSecureCredentialsTypeList();
+  }
+  if (test_insecure) {
+    credentials_types.push_back(kInsecureCredentialsType);
+  }
+  for (auto it = credentials_types.begin(); it != credentials_types.end();
+       ++it) {
+    scenarios.push_back(TestScenario(false, *it));
+    if (use_proxy) {
+      scenarios.push_back(TestScenario(true, *it));
+    }
+  }
+  return scenarios;
+}
+
 INSTANTIATE_TEST_CASE_P(End2end, End2endTest,
-                        ::testing::Values(TestScenario(false, false),
-                                          TestScenario(false, true)));
+                        ::testing::ValuesIn(CreateTestScenarios(false, true,
+                                                                true)));

 INSTANTIATE_TEST_CASE_P(End2endServerTryCancel, End2endServerTryCancelTest,
-                        ::testing::Values(TestScenario(false, false)));
+                        ::testing::ValuesIn(CreateTestScenarios(false, true,
+                                                                false)));

 INSTANTIATE_TEST_CASE_P(ProxyEnd2end, ProxyEnd2endTest,
-                        ::testing::Values(TestScenario(false, false),
-                                          TestScenario(false, true),
-                                          TestScenario(true, false),
-                                          TestScenario(true, true)));
+                        ::testing::ValuesIn(CreateTestScenarios(true, true,
+                                                                true)));

 INSTANTIATE_TEST_CASE_P(SecureEnd2end, SecureEnd2endTest,
-                        ::testing::Values(TestScenario(false, true)));
+                        ::testing::ValuesIn(CreateTestScenarios(false, false,
+                                                                true)));

 }  // namespace
 }  // namespace testing
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@ -1,6 +1,6 @@
 /*
 *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -74,6 +74,7 @@ DEFINE_string(test_case, "large_unary",
              "oauth2_auth_token: raw oauth2 access token auth; "
              "per_rpc_creds: raw oauth2 access token on a single rpc; "
              "status_code_and_message: verify status code & message; "
+              "custom_metadata: server will echo custom metadata;"
              "all : all of above.");
 DEFINE_string(default_service_account, "",
              "Email of GCE default service account");
@ -129,6 +130,8 @@ int main(int argc, char** argv) {
    client.DoPerRpcCreds(json_key);
  } else if (FLAGS_test_case == "status_code_and_message") {
    client.DoStatusWithMessage();
+  } else if (FLAGS_test_case == "custom_metadata") {
+    client.DoCustomMetadata();
  } else if (FLAGS_test_case == "all") {
    client.DoEmpty();
    client.DoLargeUnary();
@ -142,6 +145,7 @@ int main(int argc, char** argv) {
    client.DoTimeoutOnSleepingServer();
    client.DoEmptyStream();
    client.DoStatusWithMessage();
+    client.DoCustomMetadata();
    // service_account_creds and jwt_token_creds can only run with ssl.
    if (FLAGS_use_tls) {
      grpc::string json_key = GetServiceAccountJsonKey();
@ -159,7 +163,7 @@ int main(int argc, char** argv) {
        "server_compressed_streaming|half_duplex|ping_pong|cancel_after_begin|"
        "cancel_after_first_response|timeout_on_sleeping_server|empty_stream|"
        "compute_engine_creds|jwt_token_creds|oauth2_auth_token|per_rpc_creds",
-        FLAGS_test_case.c_str());
+        "status_code_and_message|custom_metadata", FLAGS_test_case.c_str());
    ret = 1;
  }

--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@ -625,5 +625,77 @@ void InteropClient::DoStatusWithMessage() {
  gpr_log(GPR_DEBUG, "Done testing Status and Message");
 }

+void InteropClient::DoCustomMetadata() {
+  const grpc::string kEchoInitialMetadataKey("x-grpc-test-echo-initial");
+  const grpc::string kInitialMetadataValue("test_initial_metadata_value");
+  const grpc::string kEchoTrailingBinMetadataKey(
+      "x-grpc-test-echo-trailing-bin");
+  const grpc::string kTrailingBinValue("\x0a\x0b\x0a\x0b\x0a\x0b");
+  ;
+
+  {
+    gpr_log(GPR_DEBUG, "Sending RPC with custom metadata");
+    ClientContext context;
+    context.AddMetadata(kEchoInitialMetadataKey, kInitialMetadataValue);
+    context.AddMetadata(kEchoTrailingBinMetadataKey, kTrailingBinValue);
+    SimpleRequest request;
+    SimpleResponse response;
+    request.set_response_size(kLargeResponseSize);
+    grpc::string payload(kLargeRequestSize, '\0');
+    request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+
+    Status s = serviceStub_.Get()->UnaryCall(&context, request, &response);
+    AssertOkOrPrintErrorStatus(s);
+    const auto& server_initial_metadata = context.GetServerInitialMetadata();
+    auto iter = server_initial_metadata.find(kEchoInitialMetadataKey);
+    GPR_ASSERT(iter != server_initial_metadata.end());
+    GPR_ASSERT(iter->second.data() == kInitialMetadataValue);
+    const auto& server_trailing_metadata = context.GetServerTrailingMetadata();
+    iter = server_trailing_metadata.find(kEchoTrailingBinMetadataKey);
+    GPR_ASSERT(iter != server_trailing_metadata.end());
+    GPR_ASSERT(grpc::string(iter->second.begin(), iter->second.end()) ==
+               kTrailingBinValue);
+
+    gpr_log(GPR_DEBUG, "Done testing RPC with custom metadata");
+  }
+
+  {
+    gpr_log(GPR_DEBUG, "Sending stream with custom metadata");
+    ClientContext context;
+    context.AddMetadata(kEchoInitialMetadataKey, kInitialMetadataValue);
+    context.AddMetadata(kEchoTrailingBinMetadataKey, kTrailingBinValue);
+    std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
+                                       StreamingOutputCallResponse>>
+        stream(serviceStub_.Get()->FullDuplexCall(&context));
+
+    StreamingOutputCallRequest request;
+    request.set_response_type(PayloadType::COMPRESSABLE);
+    ResponseParameters* response_parameter = request.add_response_parameters();
+    response_parameter->set_size(kLargeResponseSize);
+    grpc::string payload(kLargeRequestSize, '\0');
+    request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
+    StreamingOutputCallResponse response;
+    GPR_ASSERT(stream->Write(request));
+    stream->WritesDone();
+    GPR_ASSERT(stream->Read(&response));
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(kLargeResponseSize, '\0'));
+    GPR_ASSERT(!stream->Read(&response));
+    Status s = stream->Finish();
+    AssertOkOrPrintErrorStatus(s);
+    const auto& server_initial_metadata = context.GetServerInitialMetadata();
+    auto iter = server_initial_metadata.find(kEchoInitialMetadataKey);
+    GPR_ASSERT(iter != server_initial_metadata.end());
+    GPR_ASSERT(iter->second.data() == kInitialMetadataValue);
+    const auto& server_trailing_metadata = context.GetServerTrailingMetadata();
+    iter = server_trailing_metadata.find(kEchoTrailingBinMetadataKey);
+    GPR_ASSERT(iter != server_trailing_metadata.end());
+    GPR_ASSERT(grpc::string(iter->second.begin(), iter->second.end()) ==
+               kTrailingBinValue);
+
+    gpr_log(GPR_DEBUG, "Done testing stream with custom metadata");
+  }
+}
+
 }  // namespace testing
 }  // namespace grpc
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@ -1,6 +1,6 @@
 /*
 *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -75,6 +75,7 @@ class InteropClient {
  void DoTimeoutOnSleepingServer();
  void DoEmptyStream();
  void DoStatusWithMessage();
+  void DoCustomMetadata();
  // Auth tests.
  // username is a string containing the user email
  void DoJwtTokenCreds(const grpc::string& username);
--- a/test/cpp/interop/server.cc
+++ b/test/cpp/interop/server.cc
@ -1,6 +1,6 @@
 /*
 *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -80,6 +80,36 @@ using grpc::Status;
 static bool got_sigint = false;
 static const char* kRandomFile = "test/cpp/interop/rnd.dat";

+const char kEchoInitialMetadataKey[] = "x-grpc-test-echo-initial";
+const char kEchoTrailingBinMetadataKey[] = "x-grpc-test-echo-trailing-bin";
+const char kEchoUserAgentKey[] = "x-grpc-test-echo-useragent";
+
+void MaybeEchoMetadata(ServerContext* context) {
+  const auto& client_metadata = context->client_metadata();
+  GPR_ASSERT(client_metadata.count(kEchoInitialMetadataKey) <= 1);
+  GPR_ASSERT(client_metadata.count(kEchoTrailingBinMetadataKey) <= 1);
+
+  auto iter = client_metadata.find(kEchoInitialMetadataKey);
+  if (iter != client_metadata.end()) {
+    context->AddInitialMetadata(kEchoInitialMetadataKey, iter->second.data());
+  }
+  iter = client_metadata.find(kEchoTrailingBinMetadataKey);
+  if (iter != client_metadata.end()) {
+    context->AddTrailingMetadata(
+        kEchoTrailingBinMetadataKey,
+        grpc::string(iter->second.begin(), iter->second.end()));
+  }
+  // Check if client sent a magic key in the header that makes us echo
+  // back the user-agent (for testing purpose)
+  iter = client_metadata.find(kEchoUserAgentKey);
+  if (iter != client_metadata.end()) {
+    iter = client_metadata.find("user-agent");
+    if (iter != client_metadata.end()) {
+      context->AddInitialMetadata(kEchoUserAgentKey, iter->second.data());
+    }
+  }
+}
+
 bool SetPayload(PayloadType type, int size, Payload* payload) {
  PayloadType response_type;
  if (type == PayloadType::RANDOM) {
@ -130,11 +160,13 @@ class TestServiceImpl : public TestService::Service {
 public:
  Status EmptyCall(ServerContext* context, const grpc::testing::Empty* request,
                   grpc::testing::Empty* response) {
+    MaybeEchoMetadata(context);
    return Status::OK;
  }

  Status UnaryCall(ServerContext* context, const SimpleRequest* request,
                   SimpleResponse* response) {
+    MaybeEchoMetadata(context);
    SetResponseCompression(context, *request);
    if (request->response_size() > 0) {
      if (!SetPayload(request->response_type(), request->response_size(),
@ -192,6 +224,7 @@ class TestServiceImpl : public TestService::Service {
      ServerContext* context,
      ServerReaderWriter<StreamingOutputCallResponse,
                         StreamingOutputCallRequest>* stream) {
+    MaybeEchoMetadata(context);
    StreamingOutputCallRequest request;
    StreamingOutputCallResponse response;
    bool write_success = true;
--- a/test/cpp/util/test_credentials_provider.cc
+++ b/test/cpp/util/test_credentials_provider.cc
@ -0,0 +1,82 @@
+
+/*
+ *
+ * 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 "test/cpp/util/test_credentials_provider.h"
+
+#include "test/core/end2end/data/ssl_test_data.h"
+
+namespace grpc {
+namespace testing {
+
+const char kTlsCredentialsType[] = "TLS_CREDENTIALS";
+
+std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+    const grpc::string& type, ChannelArguments* args) {
+  if (type == kInsecureCredentialsType) {
+    return InsecureChannelCredentials();
+  } else if (type == kTlsCredentialsType) {
+    SslCredentialsOptions ssl_opts = {test_root_cert, "", ""};
+    args->SetSslTargetNameOverride("foo.test.google.fr");
+    return SslCredentials(ssl_opts);
+  } else {
+    gpr_log(GPR_ERROR, "Unsupported credentials type %s.", type.c_str());
+  }
+  return nullptr;
+}
+
+std::shared_ptr<ServerCredentials> GetServerCredentials(
+    const grpc::string& type) {
+  if (type == kInsecureCredentialsType) {
+    return InsecureServerCredentials();
+  } else if (type == kTlsCredentialsType) {
+    SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
+                                                        test_server1_cert};
+    SslServerCredentialsOptions ssl_opts;
+    ssl_opts.pem_root_certs = "";
+    ssl_opts.pem_key_cert_pairs.push_back(pkcp);
+    return SslServerCredentials(ssl_opts);
+  } else {
+    gpr_log(GPR_ERROR, "Unsupported credentials type %s.", type.c_str());
+  }
+  return nullptr;
+}
+
+std::vector<grpc::string> GetSecureCredentialsTypeList() {
+  std::vector<grpc::string> types;
+  types.push_back(kTlsCredentialsType);
+  return types;
+}
+
+}  // namespace testing
+}  // namespace grpc
--- a/test/cpp/util/test_credentials_provider.h
+++ b/test/cpp/util/test_credentials_provider.h
@ -0,0 +1,63 @@
+/*
+ *
+ * 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_TEST_CPP_UTIL_TEST_CREDENTIALS_PROVIDER_H
+#define GRPC_TEST_CPP_UTIL_TEST_CREDENTIALS_PROVIDER_H
+
+#include <memory>
+
+#include <grpc++/security/credentials.h>
+#include <grpc++/security/server_credentials.h>
+#include <grpc++/support/channel_arguments.h>
+
+namespace grpc {
+namespace testing {
+
+const char kInsecureCredentialsType[] = "INSECURE_CREDENTIALS";
+
+// Provide channel credentials according to the given type. Alter the channel
+// arguments if needed.
+std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+    const grpc::string& type, ChannelArguments* args);
+
+// Provide server credentials according to the given type.
+std::shared_ptr<ServerCredentials> GetServerCredentials(
+    const grpc::string& type);
+
+// Provide a list of secure credentials type.
+std::vector<grpc::string> GetSecureCredentialsTypeList();
+
+}  // namespace testing
+}  // namespace grpc
+
+#endif  // GRPC_TEST_CPP_UTIL_TEST_CREDENTIALS_PROVIDER_H
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@ -773,20 +773,6 @@ include/grpc/compression.h \
 include/grpc/grpc.h \
 include/grpc/status.h \
 include/grpc/census.h \
-src/core/security/auth_filters.h \
-src/core/security/base64.h \
-src/core/security/credentials.h \
-src/core/security/handshake.h \
-src/core/security/json_token.h \
-src/core/security/jwt_verifier.h \
-src/core/security/secure_endpoint.h \
-src/core/security/security_connector.h \
-src/core/security/security_context.h \
-src/core/tsi/fake_transport_security.h \
-src/core/tsi/ssl_transport_security.h \
-src/core/tsi/ssl_types.h \
-src/core/tsi/transport_security.h \
-src/core/tsi/transport_security_interface.h \
 src/core/census/grpc_filter.h \
 src/core/channel/channel_args.h \
 src/core/channel/channel_stack.h \
@ -901,30 +887,23 @@ src/core/transport/metadata_batch.h \
 src/core/transport/static_metadata.h \
 src/core/transport/transport.h \
 src/core/transport/transport_impl.h \
+src/core/security/auth_filters.h \
+src/core/security/base64.h \
+src/core/security/credentials.h \
+src/core/security/handshake.h \
+src/core/security/json_token.h \
+src/core/security/jwt_verifier.h \
+src/core/security/secure_endpoint.h \
+src/core/security/security_connector.h \
+src/core/security/security_context.h \
+src/core/tsi/fake_transport_security.h \
+src/core/tsi/ssl_transport_security.h \
+src/core/tsi/ssl_types.h \
+src/core/tsi/transport_security.h \
+src/core/tsi/transport_security_interface.h \
 src/core/census/aggregation.h \
-src/core/census/log.h \
+src/core/census/mlog.h \
 src/core/census/rpc_metric_id.h \
-src/core/httpcli/httpcli_security_connector.c \
-src/core/security/base64.c \
-src/core/security/client_auth_filter.c \
-src/core/security/credentials.c \
-src/core/security/credentials_metadata.c \
-src/core/security/credentials_posix.c \
-src/core/security/credentials_win32.c \
-src/core/security/google_default_credentials.c \
-src/core/security/handshake.c \
-src/core/security/json_token.c \
-src/core/security/jwt_verifier.c \
-src/core/security/secure_endpoint.c \
-src/core/security/security_connector.c \
-src/core/security/security_context.c \
-src/core/security/server_auth_filter.c \
-src/core/security/server_secure_chttp2.c \
-src/core/surface/init_secure.c \
-src/core/surface/secure_channel_create.c \
-src/core/tsi/fake_transport_security.c \
-src/core/tsi/ssl_transport_security.c \
-src/core/tsi/transport_security.c \
 src/core/census/grpc_context.c \
 src/core/census/grpc_filter.c \
 src/core/channel/channel_args.c \
@ -1053,9 +1032,30 @@ src/core/transport/metadata_batch.c \
 src/core/transport/static_metadata.c \
 src/core/transport/transport.c \
 src/core/transport/transport_op_string.c \
+src/core/httpcli/httpcli_security_connector.c \
+src/core/security/base64.c \
+src/core/security/client_auth_filter.c \
+src/core/security/credentials.c \
+src/core/security/credentials_metadata.c \
+src/core/security/credentials_posix.c \
+src/core/security/credentials_win32.c \
+src/core/security/google_default_credentials.c \
+src/core/security/handshake.c \
+src/core/security/json_token.c \
+src/core/security/jwt_verifier.c \
+src/core/security/secure_endpoint.c \
+src/core/security/security_connector.c \
+src/core/security/security_context.c \
+src/core/security/server_auth_filter.c \
+src/core/security/server_secure_chttp2.c \
+src/core/surface/init_secure.c \
+src/core/surface/secure_channel_create.c \
+src/core/tsi/fake_transport_security.c \
+src/core/tsi/ssl_transport_security.c \
+src/core/tsi/transport_security.c \
 src/core/census/context.c \
 src/core/census/initialize.c \
-src/core/census/log.c \
+src/core/census/mlog.c \
 src/core/census/operation.c \
 src/core/census/placeholders.c \
 src/core/census/tracing.c \
--- a/tools/jenkins/run_performance.sh
+++ b/tools/jenkins/run_performance.sh
@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@ -49,7 +49,83 @@ PID2=$!

 export QPS_WORKERS="localhost:10000,localhost:10010"

-bins/$config/qps_driver
+# big is the size in bytes of large messages (0 is the size otherwise)
+big=65536
+
+# wide is the number of client channels in multi-channel tests (1 otherwise)
+wide=64
+
+# deep is the number of RPCs outstanding on a channel in non-ping-pong tests
+# (the value used is 1 otherwise)
+deep=100
+
+#
+# Get total core count
+cores=`grep -c ^processor /proc/cpuinfo`
+halfcores=`expr $cores / 2`
+
+for secure in true false; do
+  # Scenario 1: generic async streaming ping-pong (contentionless latency)
+  bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+    --server_type=ASYNC_GENERIC_SERVER --outstanding_rpcs_per_channel=1 \
+    --client_channels=1 --bbuf_req_size=0 --bbuf_resp_size=0 \
+    --async_client_threads=1 --async_server_threads=1 --secure_test=$secure \
+    --num_servers=1 --num_clients=1 \
+    --server_core_limit=$halfcores --client_core_limit=0
+
+  # Scenario 2: generic async streaming "unconstrained" (QPS)
+  bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+    --server_type=ASYNC_GENERIC_SERVER --outstanding_rpcs_per_channel=$deep \
+    --client_channels=$wide --bbuf_req_size=0 --bbuf_resp_size=0 \
+    --async_client_threads=0 --async_server_threads=0 --secure_test=$secure \
+    --num_servers=1 --num_clients=0 \
+    --server_core_limit=$halfcores --client_core_limit=0 |& tee /tmp/qps-test.$$
+
+  # Scenario 2b: QPS with a single server core
+  bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+    --server_type=ASYNC_GENERIC_SERVER --outstanding_rpcs_per_channel=$deep \
+    --client_channels=$wide --bbuf_req_size=0 --bbuf_resp_size=0 \
+    --async_client_threads=0 --async_server_threads=0 --secure_test=$secure \
+    --num_servers=1 --num_clients=0 --server_core_limit=1 --client_core_limit=0
+
+  # Scenario 2c: protobuf-based QPS
+  bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+    --server_type=ASYNC_SERVER --outstanding_rpcs_per_channel=$deep \
+    --client_channels=$wide --simple_req_size=0 --simple_resp_size=0 \
+    --async_client_threads=0 --async_server_threads=0 --secure_test=$secure \
+    --num_servers=1 --num_clients=0 \
+    --server_core_limit=$halfcores --client_core_limit=0
+
+  # Scenario 3: Latency at sub-peak load (all clients equally loaded)
+  for loadfactor in 0.7; do
+    bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+      --server_type=ASYNC_GENERIC_SERVER --outstanding_rpcs_per_channel=$deep \
+      --client_channels=$wide --bbuf_req_size=0 --bbuf_resp_size=0 \
+      --async_client_threads=0 --async_server_threads=0 --secure_test=$secure \
+      --num_servers=1 --num_clients=0 --poisson_load=`awk -v lf=$loadfactor \
+      '$5 == "QPS:" {print int(lf * $6); exit}' /tmp/qps-test.$$` \
+      --server_core_limit=$halfcores --client_core_limit=0
+  done
+
+  rm /tmp/qps-test.$$
+
+  # Scenario 4: Single-channel bidirectional throughput test (like TCP_STREAM).
+  bins/$config/qps_driver --rpc_type=STREAMING --client_type=ASYNC_CLIENT \
+    --server_type=ASYNC_GENERIC_SERVER --outstanding_rpcs_per_channel=$deep \
+    --client_channels=1 --bbuf_req_size=$big --bbuf_resp_size=$big \
+    --async_client_threads=1 --async_server_threads=1 --secure_test=$secure \
+    --num_servers=1 --num_clients=1 \
+    --server_core_limit=$halfcores --client_core_limit=0
+
+  # Scenario 5: Sync unary ping-pong with protobufs
+  bins/$config/qps_driver --rpc_type=UNARY --client_type=SYNC_CLIENT \
+    --server_type=SYNC_SERVER --outstanding_rpcs_per_channel=1 \
+    --client_channels=1 --simple_req_size=0 --simple_resp_size=0 \
+    --secure_test=$secure --num_servers=1 --num_clients=1 \
+    --server_core_limit=$halfcores --client_core_limit=0
+
+done
+
+bins/$config/qps_driver --quit=true

-kill -2 $PID1 $PID2
 wait
--- a/tools/run_tests/artifact_targets.py
+++ b/tools/run_tests/artifact_targets.py
@ -80,6 +80,11 @@ def macos_arch_env(arch):
  return {'CFLAGS': arch_arg, 'LDFLAGS': arch_arg}


+python_version_arch_map = {
+  'x86': 'Python27_32bits',
+  'x64': 'Python27'
+}
+
 class PythonArtifact:
  """Builds Python artifacts."""

@ -88,27 +93,31 @@ class PythonArtifact:
    self.platform = platform
    self.arch = arch
    self.labels = ['artifact', 'python', platform, arch]
+    self.python_version = python_version_arch_map[arch]

  def pre_build_jobspecs(self):
      return []

  def build_jobspec(self):
-    if self.platform == 'windows':
-      raise Exception('Not supported yet.')
+    environ = {}
+    if self.platform == 'linux':
+      if self.arch == 'x86':
+        environ['SETARCH_CMD'] = 'linux32'
+      return create_docker_jobspec(self.name,
+          'tools/dockerfile/grpc_artifact_linux_%s' % self.arch,
+          'tools/run_tests/build_artifact_python.sh',
+          environ=environ)
+    elif self.platform == 'windows':
+      return create_jobspec(self.name,
+                            ['tools\\run_tests\\build_artifact_python.bat',
+                             self.python_version
+                            ],
+                            shell=True)
    else:
-      environ = {}
-      if self.platform == 'linux':
-        if self.arch == 'x86':
-          environ['SETARCH_CMD'] = 'linux32'
-        return create_docker_jobspec(self.name,
-            'tools/dockerfile/grpc_artifact_linux_%s' % self.arch,
-            'tools/run_tests/build_artifact_python.sh',
-            environ=environ)
-      else:
-        environ['SKIP_PIP_INSTALL'] = 'TRUE'
-        return create_jobspec(self.name,
-                              ['tools/run_tests/build_artifact_python.sh'],
-                              environ=environ)
+      environ['SKIP_PIP_INSTALL'] = 'TRUE'
+      return create_jobspec(self.name,
+                            ['tools/run_tests/build_artifact_python.sh'],
+                            environ=environ)

  def __str__(self):
    return self.name
@ -235,6 +244,8 @@ def targets():
          [PythonArtifact('linux', 'x86'),
           PythonArtifact('linux', 'x64'),
           PythonArtifact('macos', 'x64'),
+           PythonArtifact('windows', 'x86'),
+           PythonArtifact('windows', 'x64'),
           RubyArtifact('linux', 'x86'),
           RubyArtifact('linux', 'x64'),
           RubyArtifact('macos', 'x64')])
--- a/tools/run_tests/build_artifact_python.bat
+++ b/tools/run_tests/build_artifact_python.bat
@ -0,0 +1,61 @@
+@rem Copyright 2016, Google Inc.
+@rem All rights reserved.
+@rem
+@rem Redistribution and use in source and binary forms, with or without
+@rem modification, are permitted provided that the following conditions are
+@rem met:
+@rem
+@rem     * Redistributions of source code must retain the above copyright
+@rem notice, this list of conditions and the following disclaimer.
+@rem     * Redistributions in binary form must reproduce the above
+@rem copyright notice, this list of conditions and the following disclaimer
+@rem in the documentation and/or other materials provided with the
+@rem distribution.
+@rem     * Neither the name of Google Inc. nor the names of its
+@rem contributors may be used to endorse or promote products derived from
+@rem this software without specific prior written permission.
+@rem
+@rem THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+@rem "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+@rem LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+@rem A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+@rem OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+@rem SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+@rem LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+@rem DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+@rem THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+@rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+@rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+set NUGET=C:\nuget\nuget.exe
+%NUGET% restore vsprojects\grpc.sln || goto :error
+
+
+@call vsprojects\build_vs2013.bat vsprojects\grpc.sln /t:grpc_dll /p:Configuration=Release /p:PlatformToolset=v120 /p:Platform=Win32 || goto :error
+@call vsprojects\build_vs2013.bat vsprojects\grpc.sln /t:grpc_dll /p:Configuration=Release /p:PlatformToolset=v120 /p:Platform=x64   || goto :error
+
+mkdir src\python\grpcio\grpc\_cython\_windows
+
+copy /Y vsprojects\Release\grpc_dll.dll src\python\grpcio\grpc\_cython\_windows\grpc_c.32.python || goto :error
+copy /Y vsprojects\x64\Release\grpc_dll.dll src\python\grpcio\grpc\_cython\_windows\grpc_c.64.python || goto :error
+
+
+set PATH=C:\%1;C:\%1\scripts;%PATH%
+
+pip install --upgrade six
+pip install --upgrade setuptools
+pip install -rrequirements.txt
+
+set GRPC_PYTHON_USE_CUSTOM_BDIST=0
+set GRPC_PYTHON_BUILD_WITH_CYTHON=1
+
+python setup.py bdist_wheel
+
+mkdir artifacts
+xcopy /Y /I /S dist\* artifacts\ || goto :error
+
+goto :EOF
+
+:error
+exit /b 1
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@ -422,7 +422,7 @@ def _job_kill_handler(job):
    time.sleep(2)


-def cloud_to_prod_jobspec(language, test_case, server_host_name, 
+def cloud_to_prod_jobspec(language, test_case, server_host_name,
                          server_host_detail, docker_image=None, auth=False):
  """Creates jobspec for cloud-to-prod interop test"""
  container_name = None
@ -441,7 +441,7 @@ def cloud_to_prod_jobspec(language, test_case, server_host_name,
  cwd = language.client_cwd

  if docker_image:
-    container_name = dockerjob.random_name('interop_client_%s' % 
+    container_name = dockerjob.random_name('interop_client_%s' %
                                           language.safename)
    cmdline = docker_run_cmdline(cmdline,
                                 image=docker_image,
@ -457,7 +457,7 @@ def cloud_to_prod_jobspec(language, test_case, server_host_name,
          cmdline=cmdline,
          cwd=cwd,
          environ=environ,
-          shortname='%s:%s:%s:%s' % (suite_name, server_host_name, language, 
+          shortname='%s:%s:%s:%s' % (suite_name, server_host_name, language,
                                     test_case),
          timeout_seconds=90,
          flake_retries=5 if args.allow_flakes else 0,
@ -575,18 +575,18 @@ def aggregate_http2_results(stdout):
    'percent': 1.0 * passed / (passed + failed)
  }

-# A dictionary of prod servers to test. 
+# A dictionary of prod servers to test.
 # Format: server_name: (server_host, server_host_override, errors_allowed)
 # TODO(adelez): implement logic for errors_allowed where if the indicated tests
 # fail, they don't impact the overall test result.
 prod_servers = {
-    'default': ('grpc-test.sandbox.googleapis.com', 
+    'default': ('grpc-test.sandbox.googleapis.com',
                'grpc-test.sandbox.googleapis.com', False),
-    'gateway_v2': ('grpc-test2.sandbox.googleapis.com', 
+    'gateway_v2': ('grpc-test2.sandbox.googleapis.com',
                   'grpc-test2.sandbox.googleapis.com', True),
-    'cloud_gateway': ('216.239.32.255', 'grpc-test.sandbox.googleapis.com', 
+    'cloud_gateway': ('216.239.32.255', 'grpc-test.sandbox.googleapis.com',
                      False),
-    'cloud_gateway_v2': ('216.239.32.255', 'grpc-test2.sandbox.googleapis.com', 
+    'cloud_gateway_v2': ('216.239.32.255', 'grpc-test2.sandbox.googleapis.com',
                         True)
 }

@ -720,7 +720,7 @@ try:
          if not test_case in language.unimplemented_test_cases():
            if not test_case in _SKIP_ADVANCED + _SKIP_COMPRESSION:
              test_job = cloud_to_prod_jobspec(
-                  language, test_case, server_host_name, 
+                  language, test_case, server_host_name,
                  prod_servers[server_host_name],
                  docker_image=docker_images.get(str(language)))
              jobs.append(test_job)
@ -728,7 +728,7 @@ try:
      if args.http2_interop:
        for test_case in _HTTP2_TEST_CASES:
          test_job = cloud_to_prod_jobspec(
-              http2Interop, test_case, server_host_name, 
+              http2Interop, test_case, server_host_name,
              prod_servers[server_host_name],
              docker_image=docker_images.get(str(http2Interop)))
          jobs.append(test_job)
@ -739,7 +739,7 @@ try:
        for test_case in _AUTH_TEST_CASES:
          if not test_case in language.unimplemented_test_cases():
            test_job = cloud_to_prod_jobspec(
-                language, test_case, server_host_name, 
+                language, test_case, server_host_name,
                prod_servers[server_host_name],
                docker_image=docker_images.get(str(language)), auth=True)
            jobs.append(test_job)
@ -802,7 +802,7 @@ try:
  report_utils.render_interop_html_report(
      set([str(l) for l in languages]), servers, _TEST_CASES, _AUTH_TEST_CASES,
      _HTTP2_TEST_CASES, resultset, num_failures,
-      args.cloud_to_prod_auth or args.cloud_to_prod, args.prod_servers, 
+      args.cloud_to_prod_auth or args.cloud_to_prod, args.prod_servers,
      args.http2_interop)

 finally:
--- a/tools/run_tests/run_node.bat
+++ b/tools/run_tests/run_node.bat
@ -29,4 +29,4 @@

 set JUNIT_REPORT_PATH=src\node\reports.xml
 set JUNIT_REPORT_STACK=1
-.\node_modules\.bin\mocha.cmd --reporter mocha-jenkins-reporter src\node\test
+.\node_modules\.bin\mocha.cmd --reporter mocha-jenkins-reporter --timeout 8000 src\node\test
--- a/tools/run_tests/run_node.sh
+++ b/tools/run_tests/run_node.sh
@ -41,10 +41,13 @@ cd $(dirname $0)/../..

 root=`pwd`

+test_directory='src/node/test'
+timeout=8000
+
 if [ "$CONFIG" = "gcov" ]
 then
  ./node_modules/.bin/istanbul cover --dir reports/node_coverage \
-    -x **/interop/* ./node_modules/.bin/_mocha -- --timeout 8000 src/node/test
+    -x **/interop/* ./node_modules/.bin/_mocha -- --timeout $timeout $test_directory
  cd build
  gcov Release/obj.target/grpc/ext/*.o
  lcov --base-directory . --directory . -c -o coverage.info
@ -55,5 +58,7 @@ then
  echo '<html><head><meta http-equiv="refresh" content="0;URL=lcov-report/index.html"></head></html>' > \
    ../reports/node_coverage/index.html
 else
-  JUNIT_REPORT_PATH=src/node/reports.xml JUNIT_REPORT_STACK=1 ./node_modules/.bin/mocha --reporter mocha-jenkins-reporter src/node/test
+  JUNIT_REPORT_PATH=src/node/reports.xml JUNIT_REPORT_STACK=1 \
+    ./node_modules/.bin/mocha --timeout $timeout \
+    --reporter mocha-jenkins-reporter $test_directory
 fi
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@ -334,13 +334,14 @@ class RubyLanguage(object):

  def test_specs(self, config, args):
    return [config.job_spec(['tools/run_tests/run_ruby.sh'], None,
+                            timeout_seconds=10*60,
                            environ=_FORCE_ENVIRON_FOR_WRAPPERS)]

  def pre_build_steps(self):
    return [['tools/run_tests/pre_build_ruby.sh']]

  def make_targets(self, test_regex):
-    return ['static_c']
+    return []

  def make_options(self):
    return []
@ -1197,4 +1198,3 @@ else:
  if BuildAndRunError.POST_TEST in errors:
    exit_code |= 4
  sys.exit(exit_code)
-
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@ -92,7 +92,7 @@
    "language": "c", 
    "name": "census_log_test", 
    "src": [
-      "test/core/census/log_test.c"
+      "test/core/census/mlog_test.c"
    ]
  }, 
  {
@ -2983,7 +2983,7 @@
      "include/grpc/status.h", 
      "src/core/census/aggregation.h", 
      "src/core/census/grpc_filter.h", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.h", 
      "src/core/census/rpc_metric_id.h", 
      "src/core/channel/channel_args.h", 
      "src/core/channel/channel_stack.h", 
@ -3135,8 +3135,8 @@
      "src/core/census/grpc_filter.c", 
      "src/core/census/grpc_filter.h", 
      "src/core/census/initialize.c", 
-      "src/core/census/log.c", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.c", 
+      "src/core/census/mlog.h", 
      "src/core/census/operation.c", 
      "src/core/census/placeholders.c", 
      "src/core/census/rpc_metric_id.h", 
@ -3417,6 +3417,16 @@
      "src/core/tsi/transport_security_interface.h"
    ]
  }, 
+  {
+    "deps": [
+      "gpr", 
+      "grpc"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "grpc_dll", 
+    "src": []
+  }, 
  {
    "deps": [
      "gpr", 
@ -3514,7 +3524,7 @@
      "include/grpc/status.h", 
      "src/core/census/aggregation.h", 
      "src/core/census/grpc_filter.h", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.h", 
      "src/core/census/rpc_metric_id.h", 
      "src/core/channel/channel_args.h", 
      "src/core/channel/channel_stack.h", 
@ -3651,8 +3661,8 @@
      "src/core/census/grpc_filter.c", 
      "src/core/census/grpc_filter.h", 
      "src/core/census/initialize.c", 
-      "src/core/census/log.c", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.c", 
+      "src/core/census/mlog.h", 
      "src/core/census/operation.c", 
      "src/core/census/placeholders.c", 
      "src/core/census/rpc_metric_id.h", 
@ -4186,7 +4196,8 @@
      "test/cpp/util/cli_call.h", 
      "test/cpp/util/create_test_channel.h", 
      "test/cpp/util/string_ref_helper.h", 
-      "test/cpp/util/subprocess.h"
+      "test/cpp/util/subprocess.h", 
+      "test/cpp/util/test_credentials_provider.h"
    ], 
    "language": "c++", 
    "name": "grpc++_test_util", 
@ -4202,7 +4213,9 @@
      "test/cpp/util/string_ref_helper.cc", 
      "test/cpp/util/string_ref_helper.h", 
      "test/cpp/util/subprocess.cc", 
-      "test/cpp/util/subprocess.h"
+      "test/cpp/util/subprocess.h", 
+      "test/cpp/util/test_credentials_provider.cc", 
+      "test/cpp/util/test_credentials_provider.h"
    ]
  }, 
  {
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@ -24,6 +24,15 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc", "vcxproj\.\grpc\grpc
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_dll", "vcxproj\.\grpc_dll\grpc_dll.vcxproj", "{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}"
+	ProjectSection(myProperties) = preProject
+        	lib = "True"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_test_util", "vcxproj\.\grpc_test_util\grpc_test_util.vcxproj", "{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}"
 	ProjectSection(myProperties) = preProject
        	lib = "True"
@ -1375,6 +1384,22 @@ Global
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|Win32.Build.0 = Release-DLL|Win32
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|x64.ActiveCfg = Release-DLL|x64
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|x64.Build.0 = Release-DLL|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|Win32.ActiveCfg = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|x64.ActiveCfg = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|Win32.ActiveCfg = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|x64.ActiveCfg = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|Win32.Build.0 = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|x64.Build.0 = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|Win32.Build.0 = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|x64.Build.0 = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|x64.Build.0 = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|Win32.Build.0 = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|x64.ActiveCfg = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|x64.Build.0 = Release|x64
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Debug|Win32.ActiveCfg = Debug|Win32
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Debug|x64.ActiveCfg = Debug|x64
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Release|Win32.ActiveCfg = Release|Win32
--- a/vsprojects/grpc.sln
+++ b/vsprojects/grpc.sln
@ -24,6 +24,15 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc", "vcxproj\.\grpc\grpc
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_dll", "vcxproj\.\grpc_dll\grpc_dll.vcxproj", "{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}"
+	ProjectSection(myProperties) = preProject
+        	lib = "True"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_test_util", "vcxproj\.\grpc_test_util\grpc_test_util.vcxproj", "{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}"
 	ProjectSection(myProperties) = preProject
        	lib = "True"
@ -220,6 +229,22 @@ Global
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|Win32.Build.0 = Release-DLL|Win32
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|x64.ActiveCfg = Release-DLL|x64
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9}.Release-DLL|x64.Build.0 = Release-DLL|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|Win32.ActiveCfg = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|x64.ActiveCfg = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|Win32.ActiveCfg = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|x64.ActiveCfg = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|Win32.Build.0 = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug|x64.Build.0 = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|Win32.Build.0 = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release|x64.Build.0 = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Debug-DLL|x64.Build.0 = Debug|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|Win32.Build.0 = Release|Win32
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|x64.ActiveCfg = Release|x64
+		{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}.Release-DLL|x64.Build.0 = Release|x64
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Debug|Win32.ActiveCfg = Debug|Win32
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Debug|x64.ActiveCfg = Debug|x64
 		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}.Release|Win32.ActiveCfg = Release|Win32
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
@ -153,6 +153,7 @@
    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\create_test_channel.h" />
    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\string_ref_helper.h" />
    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\subprocess.h" />
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\test_credentials_provider.h" />
  </ItemGroup>
  <ItemGroup>
    <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\echo_messages.pb.cc">
@ -191,6 +192,8 @@
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\subprocess.cc">
    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\test_credentials_provider.cc">
+    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc++\grpc++.vcxproj">
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
@ -28,6 +28,9 @@
    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\subprocess.cc">
      <Filter>test\cpp\util</Filter>
    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\test_credentials_provider.cc">
+      <Filter>test\cpp\util</Filter>
+    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="$(SolutionDir)\..\test\cpp\end2end\test_service_impl.h">
@ -48,6 +51,9 @@
    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\subprocess.h">
      <Filter>test\cpp\util</Filter>
    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\test_credentials_provider.h">
+      <Filter>test\cpp\util</Filter>
+    </ClInclude>
  </ItemGroup>

  <ItemGroup>
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@ -282,20 +282,6 @@
    <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h" />
  </ItemGroup>
  <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\auth_filters.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\base64.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\credentials.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\handshake.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\json_token.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\jwt_verifier.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\secure_endpoint.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_connector.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_context.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\census\grpc_filter.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\channel\channel_args.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\channel\channel_stack.h" />
@ -410,53 +396,25 @@
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\static_metadata.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport_impl.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\auth_filters.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\base64.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\credentials.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\handshake.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\json_token.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\jwt_verifier.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\secure_endpoint.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_connector.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_context.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h" />
  </ItemGroup>
  <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\src\core\httpcli\httpcli_security_connector.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\base64.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\client_auth_filter.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_metadata.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_posix.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_win32.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\google_default_credentials.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\handshake.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\json_token.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\jwt_verifier.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\secure_endpoint.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_connector.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_context.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_auth_filter.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_secure_chttp2.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\surface\init_secure.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\surface\secure_channel_create.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
-    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\grpc_context.c">
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\grpc_filter.c">
@ -713,11 +671,53 @@
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\transport\transport_op_string.c">
    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\httpcli\httpcli_security_connector.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\base64.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\client_auth_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_win32.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\google_default_credentials.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\handshake.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\json_token.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\jwt_verifier.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\secure_endpoint.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_connector.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_context.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_auth_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_secure_chttp2.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\surface\init_secure.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\surface\secure_channel_create.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
+    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\context.c">
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
    </ClCompile>
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@ -1,69 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\src\core\httpcli\httpcli_security_connector.c">
-      <Filter>src\core\httpcli</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\base64.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\client_auth_filter.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_metadata.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_posix.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_win32.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\google_default_credentials.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\handshake.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\json_token.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\jwt_verifier.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\secure_endpoint.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_connector.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_context.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_auth_filter.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_secure_chttp2.c">
-      <Filter>src\core\security</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\surface\init_secure.c">
-      <Filter>src\core\surface</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\surface\secure_channel_create.c">
-      <Filter>src\core\surface</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
-      <Filter>src\core\tsi</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
-      <Filter>src\core\tsi</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
-      <Filter>src\core\tsi</Filter>
-    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\grpc_context.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
@ -448,13 +385,76 @@
    <ClCompile Include="$(SolutionDir)\..\src\core\transport\transport_op_string.c">
      <Filter>src\core\transport</Filter>
    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\httpcli\httpcli_security_connector.c">
+      <Filter>src\core\httpcli</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\base64.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\client_auth_filter.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_metadata.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_posix.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\credentials_win32.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\google_default_credentials.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\handshake.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\json_token.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\jwt_verifier.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\secure_endpoint.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_connector.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\security_context.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_auth_filter.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\security\server_secure_chttp2.c">
+      <Filter>src\core\security</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\surface\init_secure.c">
+      <Filter>src\core\surface</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\surface\secure_channel_create.c">
+      <Filter>src\core\surface</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
+      <Filter>src\core\tsi</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
+      <Filter>src\core\tsi</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
+      <Filter>src\core\tsi</Filter>
+    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\context.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
@ -509,48 +509,6 @@
    </ClInclude>
  </ItemGroup>
  <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\auth_filters.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\base64.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\credentials.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\handshake.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\json_token.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\jwt_verifier.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\secure_endpoint.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_connector.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_context.h">
-      <Filter>src\core\security</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h">
-      <Filter>src\core\tsi</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h">
-      <Filter>src\core\tsi</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h">
-      <Filter>src\core\tsi</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h">
-      <Filter>src\core\tsi</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h">
-      <Filter>src\core\tsi</Filter>
-    </ClInclude>
    <ClInclude Include="$(SolutionDir)\..\src\core\census\grpc_filter.h">
      <Filter>src\core\census</Filter>
    </ClInclude>
@ -893,10 +851,52 @@
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport_impl.h">
      <Filter>src\core\transport</Filter>
    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\auth_filters.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\base64.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\credentials.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\handshake.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\json_token.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\jwt_verifier.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\secure_endpoint.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_connector.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\security\security_context.h">
+      <Filter>src\core\security</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
    <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h">
      <Filter>src\core\census</Filter>
    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h">
      <Filter>src\core\census</Filter>
    </ClInclude>
    <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h">
--- a/vsprojects/vcxproj/grpc_dll/grpc_dll.vcxproj
+++ b/vsprojects/vcxproj/grpc_dll/grpc_dll.vcxproj
@ -0,0 +1,200 @@
+<?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>{A2F6CBBA-A553-41B3-A7DE-F26DECCC27F0}</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="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>grpc_dll</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="'$(Configuration)'=='Release'">
+    <TargetName>grpc_dll</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(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="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <ModuleDefinitionFile>$(SolutionDir)\..\grpc.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <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>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <ModuleDefinitionFile>$(SolutionDir)\..\grpc.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <ModuleDefinitionFile>$(SolutionDir)\..\grpc.def</ModuleDefinitionFile>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <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>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <ModuleDefinitionFile>$(SolutionDir)\..\grpc.def</ModuleDefinitionFile>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <None Include="$(SolutionDir)\..\grpc.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\vsprojects\dummy.c">
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
+      <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies\grpc.dependencies.zlib.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies\grpc.dependencies.openssl.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.redist.1.0.204.1\build\native\grpc.dependencies.openssl.redist.targets')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props')" />
+    <Error Condition="!Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.targets')" />
+  </Target>
+</Project>
+
--- a/vsprojects/vcxproj/grpc_dll/grpc_dll.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_dll/grpc_dll.vcxproj.filters
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <None Include="$(SolutionDir)\..\grpc.def" />
+  </ItemGroup>
+
+  <ItemGroup>
+  </ItemGroup>
+</Project>
+
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@ -387,7 +387,7 @@
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport_impl.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h" />
    <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h" />
  </ItemGroup>
  <ItemGroup>
@ -653,7 +653,7 @@
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
    </ClCompile>
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@ -394,7 +394,7 @@
    <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
      <Filter>src\core\census</Filter>
    </ClCompile>
    <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
@ -791,7 +791,7 @@
    <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h">
      <Filter>src\core\census</Filter>
    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h">
      <Filter>src\core\census</Filter>
    </ClInclude>
    <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h">
--- a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj
+++ b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj
@ -158,7 +158,7 @@
  </ItemDefinitionGroup>

  <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\census\log_test.c">
+    <ClCompile Include="$(SolutionDir)\..\test\core\census\mlog_test.c">
    </ClCompile>
  </ItemGroup>
  <ItemGroup>
--- a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters
@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\census\log_test.c">
+    <ClCompile Include="$(SolutionDir)\..\test\core\census\mlog_test.c">
      <Filter>test\core\census</Filter>
    </ClCompile>
  </ItemGroup>