Reinstate sockpair tests
diff --git a/Makefile b/Makefile
index a8cbda0..e863757 100644
--- a/Makefile
+++ b/Makefile
@@ -1025,6 +1025,9 @@
 h2_full+trace_test: $(BINDIR)/$(CONFIG)/h2_full+trace_test
 h2_oauth2_test: $(BINDIR)/$(CONFIG)/h2_oauth2_test
 h2_proxy_test: $(BINDIR)/$(CONFIG)/h2_proxy_test
+h2_sockpair_test: $(BINDIR)/$(CONFIG)/h2_sockpair_test
+h2_sockpair+trace_test: $(BINDIR)/$(CONFIG)/h2_sockpair+trace_test
+h2_sockpair_1byte_test: $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_test
 h2_ssl_test: $(BINDIR)/$(CONFIG)/h2_ssl_test
 h2_ssl+poll_test: $(BINDIR)/$(CONFIG)/h2_ssl+poll_test
 h2_ssl_proxy_test: $(BINDIR)/$(CONFIG)/h2_ssl_proxy_test
@@ -1039,6 +1042,9 @@
 h2_full+poll+pipe_nosec_test: $(BINDIR)/$(CONFIG)/h2_full+poll+pipe_nosec_test
 h2_full+trace_nosec_test: $(BINDIR)/$(CONFIG)/h2_full+trace_nosec_test
 h2_proxy_nosec_test: $(BINDIR)/$(CONFIG)/h2_proxy_nosec_test
+h2_sockpair_nosec_test: $(BINDIR)/$(CONFIG)/h2_sockpair_nosec_test
+h2_sockpair+trace_nosec_test: $(BINDIR)/$(CONFIG)/h2_sockpair+trace_nosec_test
+h2_sockpair_1byte_nosec_test: $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_nosec_test
 h2_uchannel_nosec_test: $(BINDIR)/$(CONFIG)/h2_uchannel_nosec_test
 h2_uds_nosec_test: $(BINDIR)/$(CONFIG)/h2_uds_nosec_test
 h2_uds+poll_nosec_test: $(BINDIR)/$(CONFIG)/h2_uds+poll_nosec_test
@@ -1239,6 +1245,9 @@
   $(BINDIR)/$(CONFIG)/h2_full+trace_test \
   $(BINDIR)/$(CONFIG)/h2_oauth2_test \
   $(BINDIR)/$(CONFIG)/h2_proxy_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair+trace_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_test \
   $(BINDIR)/$(CONFIG)/h2_ssl_test \
   $(BINDIR)/$(CONFIG)/h2_ssl+poll_test \
   $(BINDIR)/$(CONFIG)/h2_ssl_proxy_test \
@@ -1253,6 +1262,9 @@
   $(BINDIR)/$(CONFIG)/h2_full+poll+pipe_nosec_test \
   $(BINDIR)/$(CONFIG)/h2_full+trace_nosec_test \
   $(BINDIR)/$(CONFIG)/h2_proxy_nosec_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair_nosec_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair+trace_nosec_test \
+  $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_nosec_test \
   $(BINDIR)/$(CONFIG)/h2_uchannel_nosec_test \
   $(BINDIR)/$(CONFIG)/h2_uds_nosec_test \
   $(BINDIR)/$(CONFIG)/h2_uds+poll_nosec_test \
@@ -12428,6 +12440,102 @@
 endif
 
 
+H2_SOCKPAIR_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair.c \
+
+H2_SOCKPAIR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_test: $(H2_SOCKPAIR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/h2_sockpair_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair.o:  $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair_test: $(H2_SOCKPAIR_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
+H2_SOCKPAIR+TRACE_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair+trace.c \
+
+H2_SOCKPAIR+TRACE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR+TRACE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/h2_sockpair+trace_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair+trace_test: $(H2_SOCKPAIR+TRACE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR+TRACE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/h2_sockpair+trace_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair+trace.o:  $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair+trace_test: $(H2_SOCKPAIR+TRACE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR+TRACE_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
+H2_SOCKPAIR_1BYTE_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair_1byte.c \
+
+H2_SOCKPAIR_1BYTE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR_1BYTE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_1byte_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_1byte_test: $(H2_SOCKPAIR_1BYTE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR_1BYTE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair_1byte.o:  $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_certs.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair_1byte_test: $(H2_SOCKPAIR_1BYTE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR_1BYTE_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 H2_SSL_TEST_SRC = \
     test/core/end2end/fixtures/h2_ssl.c \
 
@@ -12780,6 +12888,66 @@
 endif
 
 
+H2_SOCKPAIR_NOSEC_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair.c \
+
+H2_SOCKPAIR_NOSEC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR_NOSEC_TEST_SRC))))
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_nosec_test: $(H2_SOCKPAIR_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) -o $(BINDIR)/$(CONFIG)/h2_sockpair_nosec_test
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair.o:  $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair_nosec_test: $(H2_SOCKPAIR_NOSEC_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR_NOSEC_TEST_OBJS:.o=.dep)
+endif
+
+
+H2_SOCKPAIR+TRACE_NOSEC_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair+trace.c \
+
+H2_SOCKPAIR+TRACE_NOSEC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR+TRACE_NOSEC_TEST_SRC))))
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair+trace_nosec_test: $(H2_SOCKPAIR+TRACE_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR+TRACE_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) -o $(BINDIR)/$(CONFIG)/h2_sockpair+trace_nosec_test
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair+trace.o:  $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair+trace_nosec_test: $(H2_SOCKPAIR+TRACE_NOSEC_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR+TRACE_NOSEC_TEST_OBJS:.o=.dep)
+endif
+
+
+H2_SOCKPAIR_1BYTE_NOSEC_TEST_SRC = \
+    test/core/end2end/fixtures/h2_sockpair_1byte.c \
+
+H2_SOCKPAIR_1BYTE_NOSEC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_SOCKPAIR_1BYTE_NOSEC_TEST_SRC))))
+
+
+$(BINDIR)/$(CONFIG)/h2_sockpair_1byte_nosec_test: $(H2_SOCKPAIR_1BYTE_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(H2_SOCKPAIR_1BYTE_NOSEC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) -o $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_nosec_test
+
+$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_sockpair_1byte.o:  $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_h2_sockpair_1byte_nosec_test: $(H2_SOCKPAIR_1BYTE_NOSEC_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_DEPS),true)
+-include $(H2_SOCKPAIR_1BYTE_NOSEC_TEST_OBJS:.o=.dep)
+endif
+
+
 H2_UCHANNEL_NOSEC_TEST_SRC = \
     test/core/end2end/fixtures/h2_uchannel.c \
 
diff --git a/src/core/channel/channel_stack_builder.c b/src/core/channel/channel_stack_builder.c
index 3a095c5..6db99d9 100644
--- a/src/core/channel/channel_stack_builder.c
+++ b/src/core/channel/channel_stack_builder.c
@@ -37,6 +37,8 @@
 
 #include <grpc/support/alloc.h>
 
+int grpc_trace_channel_stack_builder = 0;
+
 #define BEGIN_SENTINAL ((grpc_channel_filter *)1)
 #define END_SENTINAL ((grpc_channel_filter *)2)
 
@@ -217,6 +219,7 @@
   // count the number of filters
   size_t num_filters = 0;
   for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
+    gpr_log(GPR_DEBUG, "%d: %s", num_filters, p->filter->name);
     num_filters++;
   }
 
@@ -245,9 +248,10 @@
   // run post-initialization functions
   i = 0;
   for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
-    if (p->init != NULL)
+    if (p->init != NULL) {
       p->init(channel_stack, grpc_channel_stack_element(channel_stack, i),
               p->init_arg);
+    }
     i++;
   }
 
diff --git a/src/core/channel/channel_stack_builder.h b/src/core/channel/channel_stack_builder.h
index 4734c82..8d7cf3e 100644
--- a/src/core/channel/channel_stack_builder.h
+++ b/src/core/channel/channel_stack_builder.h
@@ -135,4 +135,6 @@
 // Destroy the builder without creating a channel stack
 void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder);
 
+extern int grpc_trace_channel_stack_builder;
+
 #endif
diff --git a/src/core/surface/channel_init.c b/src/core/surface/channel_init.c
index d4c0e9f..70ee2c5 100644
--- a/src/core/surface/channel_init.c
+++ b/src/core/surface/channel_init.c
@@ -116,6 +116,8 @@
       return "CLIENT_UCHANNEL";
     case GRPC_CLIENT_LAME_CHANNEL:
       return "CLIENT_LAME_CHANNEL";
+    case GRPC_CLIENT_DIRECT_CHANNEL:
+      return "CLIENT_DIRECT_CHANNEL";
     case GRPC_NUM_CHANNEL_STACK_TYPES:
       break;
   }
diff --git a/src/core/surface/channel_stack_type.c b/src/core/surface/channel_stack_type.c
index f08dff2..6fd33d4 100644
--- a/src/core/surface/channel_stack_type.c
+++ b/src/core/surface/channel_stack_type.c
@@ -45,6 +45,8 @@
       return true;
     case GRPC_CLIENT_LAME_CHANNEL:
       return true;
+    case GRPC_CLIENT_DIRECT_CHANNEL:
+      return true;
     case GRPC_SERVER_CHANNEL:
       return false;
     case GRPC_NUM_CHANNEL_STACK_TYPES:
diff --git a/src/core/surface/channel_stack_type.h b/src/core/surface/channel_stack_type.h
index d60bfab..56c6453 100644
--- a/src/core/surface/channel_stack_type.h
+++ b/src/core/surface/channel_stack_type.h
@@ -37,10 +37,17 @@
 #include <stdbool.h>
 
 typedef enum {
+  // normal top-half client channel with load-balancing, connection management
   GRPC_CLIENT_CHANNEL,
+  // abbreviated top-half client channel bound to one subchannel - for internal load balancing implementation
   GRPC_CLIENT_UCHANNEL,
+  // bottom-half of a client channel: everything that happens post-load balancing (bound to a specific transport)
   GRPC_CLIENT_SUBCHANNEL,
+  // a permanently broken client channel
   GRPC_CLIENT_LAME_CHANNEL,
+  // a directly connected client channel (without load-balancing, directly talks to a transport)
+  GRPC_CLIENT_DIRECT_CHANNEL,
+  // server side channel
   GRPC_SERVER_CHANNEL,
   // must be last
   GRPC_NUM_CHANNEL_STACK_TYPES
diff --git a/src/core/surface/init.c b/src/core/surface/init.c
index 890f86a..838798e 100644
--- a/src/core/surface/init.c
+++ b/src/core/surface/init.c
@@ -109,6 +109,8 @@
 static void register_builtin_channel_init() {
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, prepend_filter,
                                    (void *)&grpc_compress_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX, prepend_filter,
+                                   (void *)&grpc_compress_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX,
                                    prepend_filter,
                                    (void *)&grpc_compress_filter);
@@ -119,6 +121,11 @@
                                    (void *)&grpc_http_client_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
                                    grpc_add_connected_filter, NULL);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   maybe_add_http_filter,
+                                   (void *)&grpc_http_client_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   grpc_add_connected_filter, NULL);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_add_http_filter,
                                    (void *)&grpc_http_server_filter);
@@ -175,6 +182,7 @@
     grpc_register_tracer("http", &grpc_http_trace);
     grpc_register_tracer("flowctl", &grpc_flowctl_trace);
     grpc_register_tracer("connectivity_state", &grpc_connectivity_state_trace);
+    grpc_register_tracer("channel_stack_builder", &grpc_trace_channel_stack_builder);
     grpc_security_pre_init();
     grpc_iomgr_init();
     grpc_executor_init();
diff --git a/src/core/surface/init_secure.c b/src/core/surface/init_secure.c
index de56fb3..311dda9 100644
--- a/src/core/surface/init_secure.c
+++ b/src/core/surface/init_secure.c
@@ -82,6 +82,8 @@
 void grpc_register_security_filters(void) {
   grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
                                    maybe_prepend_client_auth_filter, NULL);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   maybe_prepend_client_auth_filter, NULL);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_prepend_server_auth_filter, NULL);
 }
diff --git a/test/core/end2end/fixtures/h2_sockpair+trace.c b/test/core/end2end/fixtures/h2_sockpair+trace.c
index 511c8b1..eba21be 100644
--- a/test/core/end2end/fixtures/h2_sockpair+trace.c
+++ b/test/core/end2end/fixtures/h2_sockpair+trace.c
@@ -59,11 +59,8 @@
 
 static void server_setup_transport(void *ts, grpc_transport *transport) {
   grpc_end2end_test_fixture *f = ts;
-  static grpc_channel_filter const *extra_filters[] = {
-      &grpc_http_server_filter};
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_server_setup_transport(&exec_ctx, f->server, transport, extra_filters,
-                              GPR_ARRAY_SIZE(extra_filters),
+  grpc_server_setup_transport(&exec_ctx, f->server, transport, 
                               grpc_server_get_channel_args(f->server));
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -77,17 +74,8 @@
                                    grpc_transport *transport) {
   sp_client_setup *cs = ts;
 
-  const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
-                                          &grpc_compress_filter,
-                                          &grpc_connected_channel_filter};
-  size_t nfilters = sizeof(filters) / sizeof(*filters);
-  grpc_channel *channel = grpc_channel_create_from_filters(
-      exec_ctx, "socketpair-target", filters, nfilters, cs->client_args, 1);
-
-  cs->f->client = channel;
-
-  grpc_connected_channel_bind_transport(grpc_channel_get_channel_stack(channel),
-                                        transport);
+  cs->f->client = grpc_channel_create(
+      exec_ctx, "socketpair-target", cs->client_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
 }
 
 static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
@@ -126,7 +114,7 @@
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
   GPR_ASSERT(!f->server);
-  f->server = grpc_server_create_from_filters(NULL, 0, server_args);
+  f->server = grpc_server_create(server_args, NULL);
   grpc_server_register_completion_queue(f->server, f->cq, NULL);
   grpc_server_start(f->server);
   transport =
diff --git a/test/core/end2end/fixtures/h2_sockpair.c b/test/core/end2end/fixtures/h2_sockpair.c
index 6b4787b..e1b0042 100644
--- a/test/core/end2end/fixtures/h2_sockpair.c
+++ b/test/core/end2end/fixtures/h2_sockpair.c
@@ -58,11 +58,8 @@
 
 static void server_setup_transport(void *ts, grpc_transport *transport) {
   grpc_end2end_test_fixture *f = ts;
-  static grpc_channel_filter const *extra_filters[] = {
-      &grpc_http_server_filter};
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_server_setup_transport(&exec_ctx, f->server, transport, extra_filters,
-                              GPR_ARRAY_SIZE(extra_filters),
+  grpc_server_setup_transport(&exec_ctx, f->server, transport,
                               grpc_server_get_channel_args(f->server));
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -76,17 +73,8 @@
                                    grpc_transport *transport) {
   sp_client_setup *cs = ts;
 
-  const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
-                                          &grpc_compress_filter,
-                                          &grpc_connected_channel_filter};
-  size_t nfilters = sizeof(filters) / sizeof(*filters);
-  grpc_channel *channel = grpc_channel_create_from_filters(
-      exec_ctx, "socketpair-target", filters, nfilters, cs->client_args, 1);
-
-  cs->f->client = channel;
-
-  grpc_connected_channel_bind_transport(grpc_channel_get_channel_stack(channel),
-                                        transport);
+  cs->f->client = grpc_channel_create(
+      exec_ctx, "socketpair-target", cs->client_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
 }
 
 static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
@@ -125,7 +113,7 @@
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
   GPR_ASSERT(!f->server);
-  f->server = grpc_server_create_from_filters(NULL, 0, server_args);
+  f->server = grpc_server_create(server_args, NULL);
   grpc_server_register_completion_queue(f->server, f->cq, NULL);
   grpc_server_start(f->server);
   transport =
diff --git a/test/core/end2end/fixtures/h2_sockpair_1byte.c b/test/core/end2end/fixtures/h2_sockpair_1byte.c
index 3ae8e96..3f83584 100644
--- a/test/core/end2end/fixtures/h2_sockpair_1byte.c
+++ b/test/core/end2end/fixtures/h2_sockpair_1byte.c
@@ -58,11 +58,8 @@
 
 static void server_setup_transport(void *ts, grpc_transport *transport) {
   grpc_end2end_test_fixture *f = ts;
-  static grpc_channel_filter const *extra_filters[] = {
-      &grpc_http_server_filter};
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_server_setup_transport(&exec_ctx, f->server, transport, extra_filters,
-                              GPR_ARRAY_SIZE(extra_filters),
+  grpc_server_setup_transport(&exec_ctx, f->server, transport,
                               grpc_server_get_channel_args(f->server));
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -76,17 +73,8 @@
                                    grpc_transport *transport) {
   sp_client_setup *cs = ts;
 
-  const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
-                                          &grpc_compress_filter,
-                                          &grpc_connected_channel_filter};
-  size_t nfilters = sizeof(filters) / sizeof(*filters);
-  grpc_channel *channel = grpc_channel_create_from_filters(
-      exec_ctx, "socketpair-target", filters, nfilters, cs->client_args, 1);
-
-  cs->f->client = channel;
-
-  grpc_connected_channel_bind_transport(grpc_channel_get_channel_stack(channel),
-                                        transport);
+  cs->f->client = grpc_channel_create(
+      exec_ctx, "socketpair-target", cs->client_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
 }
 
 static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
@@ -125,7 +113,7 @@
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
   GPR_ASSERT(!f->server);
-  f->server = grpc_server_create_from_filters(NULL, 0, server_args);
+  f->server = grpc_server_create(server_args, NULL);
   grpc_server_register_completion_queue(f->server, f->cq, NULL);
   grpc_server_start(f->server);
   transport =
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 5146050..8185752 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -63,6 +63,11 @@
     'h2_oauth2': default_secure_fixture_options._replace(ci_mac=False),
     'h2_proxy': default_unsecure_fixture_options._replace(includes_proxy=True,
                                                           ci_mac=False),
+    'h2_sockpair_1byte': socketpair_unsecure_fixture_options._replace(
+        ci_mac=False),
+    'h2_sockpair': socketpair_unsecure_fixture_options._replace(ci_mac=False),
+    'h2_sockpair+trace': socketpair_unsecure_fixture_options._replace(
+        ci_mac=False, tracing=True),
     'h2_ssl': default_secure_fixture_options,
     'h2_ssl+poll': default_secure_fixture_options._replace(platforms=['linux']),
     'h2_ssl_proxy': default_secure_fixture_options._replace(includes_proxy=True,
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index b1291c8..62dd7e9 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -2481,6 +2481,54 @@
     ], 
     "headers": [], 
     "language": "c", 
+    "name": "h2_sockpair_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_certs", 
+      "end2end_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair+trace.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_certs", 
+      "end2end_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair_1byte.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_certs", 
+      "end2end_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
     "name": "h2_ssl_test", 
     "src": [
       "test/core/end2end/fixtures/h2_ssl.c"
@@ -2696,6 +2744,51 @@
     ], 
     "headers": [], 
     "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_nosec_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc_test_util_unsecure", 
+      "grpc_unsecure"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair+trace.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_nosec_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc_test_util_unsecure", 
+      "grpc_unsecure"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "src": [
+      "test/core/end2end/fixtures/h2_sockpair_1byte.c"
+    ]
+  }, 
+  {
+    "deps": [
+      "end2end_nosec_tests", 
+      "gpr", 
+      "gpr_test_util", 
+      "grpc_test_util_unsecure", 
+      "grpc_unsecure"
+    ], 
+    "headers": [], 
+    "language": "c", 
     "name": "h2_uchannel_nosec_test", 
     "src": [
       "test/core/end2end/fixtures/h2_uchannel.c"
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 7644ffd..c397423 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -11042,6 +11042,1938 @@
     "ci_platforms": [
       "windows", 
       "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "binary_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "call_creds"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_accept"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_client_done"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_invoke"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_before_invoke"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_in_a_vacuum"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_with_status"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "empty_batch"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "graceful_server_shutdown"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "high_initial_seqno"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "hpack_size"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "invoke_large_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "large_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_concurrent_streams"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_message_length"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "negative_deadline"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_op"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "registered_call"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_flags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "server_finishes_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_calls"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_tags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
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+      "posix"
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+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
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+      "max_concurrent_streams"
+    ], 
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+      "posix"
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+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_message_length"
+    ], 
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+      "windows", 
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+      "posix"
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+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "metadata"
+    ], 
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+      "windows", 
+      "linux", 
+      "posix"
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+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "negative_deadline"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_op"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
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+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "payload"
+    ], 
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+      "posix"
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+    "language": "c", 
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+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
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+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
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+    ], 
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+      "posix"
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+      "mac", 
+      "posix"
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+  {
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+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
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+    ], 
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+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "server_finishes_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_calls"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_tags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "trailing_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "bad_hostname"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
       "mac", 
       "posix"
     ], 
@@ -20329,6 +22261,1875 @@
     "ci_platforms": [
       "windows", 
       "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "binary_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_accept"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_client_done"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_after_invoke"
+    ], 
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+      "posix"
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+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
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+    ], 
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+      "posix"
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+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "cancel_in_a_vacuum"
+    ], 
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+      "windows", 
+      "linux", 
+      "posix"
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+      "linux", 
+      "mac", 
+      "posix"
+    ]
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+  {
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+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "compressed_payload"
+    ], 
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+    "platforms": [
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+      "mac", 
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+    "platforms": [
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+      "linux", 
+      "mac", 
+      "posix"
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+  }, 
+  {
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+      "graceful_server_shutdown"
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+      "mac", 
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+      "mac", 
+      "posix"
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+  {
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+    "platforms": [
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+      "mac", 
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+  {
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+      "posix"
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+      "linux", 
+      "mac", 
+      "posix"
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+  {
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+      "mac", 
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+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_message_length"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "negative_deadline"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "no_op"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "registered_call"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_flags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "request_with_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "server_finishes_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_calls"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_tags"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "trailing_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "bad_hostname"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
       "mac", 
       "posix"
     ], 
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index b209785..2dadd5e 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -1154,6 +1154,45 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair_test", "vcxproj\test/end2end/fixtures\h2_sockpair_test\h2_sockpair_test.vcxproj", "{67458AF8-A122-7740-F195-C2E74A106FAB}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
+		{80EA2691-C037-6DD3-D3AB-21510BF0E64B} = {80EA2691-C037-6DD3-D3AB-21510BF0E64B}
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair+trace_test", "vcxproj\test/end2end/fixtures\h2_sockpair+trace_test\h2_sockpair+trace_test.vcxproj", "{82878169-5A89-FD1E-31A6-E9F07BB92418}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
+		{80EA2691-C037-6DD3-D3AB-21510BF0E64B} = {80EA2691-C037-6DD3-D3AB-21510BF0E64B}
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair_1byte_test", "vcxproj\test/end2end/fixtures\h2_sockpair_1byte_test\h2_sockpair_1byte_test.vcxproj", "{03A65361-E139-5344-1868-8E8FC269C6E6}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
+		{80EA2691-C037-6DD3-D3AB-21510BF0E64B} = {80EA2691-C037-6DD3-D3AB-21510BF0E64B}
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_ssl_test", "vcxproj\test/end2end/fixtures\h2_ssl_test\h2_ssl_test.vcxproj", "{EA78D290-4098-FF04-C647-013F6B81E4E7}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -1253,6 +1292,42 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair_nosec_test", "vcxproj\test/end2end/fixtures\h2_sockpair_nosec_test\h2_sockpair_nosec_test.vcxproj", "{B3F26242-A43D-4F77-A84C-0F478741A061}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED} = {47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}
+		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
+		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair+trace_nosec_test", "vcxproj\test/end2end/fixtures\h2_sockpair+trace_nosec_test\h2_sockpair+trace_nosec_test.vcxproj", "{962380E0-1C06-8917-8F7F-1A02E0E93BE7}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED} = {47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}
+		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
+		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_sockpair_1byte_nosec_test", "vcxproj\test/end2end/fixtures\h2_sockpair_1byte_nosec_test\h2_sockpair_1byte_nosec_test.vcxproj", "{485E6713-487D-F274-BDE7-5D29300C93FE}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED} = {47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}
+		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
+		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_uchannel_nosec_test", "vcxproj\test/end2end/fixtures\h2_uchannel_nosec_test\h2_uchannel_nosec_test.vcxproj", "{BD79A629-4181-DB5E-C28F-44EB280A6F91}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -3021,6 +3096,54 @@
 		{5753B14F-0C69-2E56-6264-5541B2DCDF67}.Release-DLL|Win32.Build.0 = Release|Win32
 		{5753B14F-0C69-2E56-6264-5541B2DCDF67}.Release-DLL|x64.ActiveCfg = Release|x64
 		{5753B14F-0C69-2E56-6264-5541B2DCDF67}.Release-DLL|x64.Build.0 = Release|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug|Win32.ActiveCfg = Debug|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug|x64.ActiveCfg = Debug|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release|Win32.ActiveCfg = Release|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release|x64.ActiveCfg = Release|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug|Win32.Build.0 = Debug|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug|x64.Build.0 = Debug|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release|Win32.Build.0 = Release|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release|x64.Build.0 = Release|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Debug-DLL|x64.Build.0 = Debug|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release-DLL|Win32.Build.0 = Release|Win32
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release-DLL|x64.ActiveCfg = Release|x64
+		{67458AF8-A122-7740-F195-C2E74A106FAB}.Release-DLL|x64.Build.0 = Release|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug|Win32.ActiveCfg = Debug|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug|x64.ActiveCfg = Debug|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release|Win32.ActiveCfg = Release|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release|x64.ActiveCfg = Release|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug|Win32.Build.0 = Debug|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug|x64.Build.0 = Debug|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release|Win32.Build.0 = Release|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release|x64.Build.0 = Release|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Debug-DLL|x64.Build.0 = Debug|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release-DLL|Win32.Build.0 = Release|Win32
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release-DLL|x64.ActiveCfg = Release|x64
+		{82878169-5A89-FD1E-31A6-E9F07BB92418}.Release-DLL|x64.Build.0 = Release|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug|Win32.ActiveCfg = Debug|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug|x64.ActiveCfg = Debug|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release|Win32.ActiveCfg = Release|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release|x64.ActiveCfg = Release|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug|Win32.Build.0 = Debug|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug|x64.Build.0 = Debug|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release|Win32.Build.0 = Release|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release|x64.Build.0 = Release|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Debug-DLL|x64.Build.0 = Debug|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release-DLL|Win32.Build.0 = Release|Win32
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release-DLL|x64.ActiveCfg = Release|x64
+		{03A65361-E139-5344-1868-8E8FC269C6E6}.Release-DLL|x64.Build.0 = Release|x64
 		{EA78D290-4098-FF04-C647-013F6B81E4E7}.Debug|Win32.ActiveCfg = Debug|Win32
 		{EA78D290-4098-FF04-C647-013F6B81E4E7}.Debug|x64.ActiveCfg = Debug|x64
 		{EA78D290-4098-FF04-C647-013F6B81E4E7}.Release|Win32.ActiveCfg = Release|Win32
@@ -3149,6 +3272,54 @@
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 		{6EC72045-98CB-8A8D-9788-BC94209E23C8}.Release-DLL|x64.ActiveCfg = Release|x64
 		{6EC72045-98CB-8A8D-9788-BC94209E23C8}.Release-DLL|x64.Build.0 = Release|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug|Win32.ActiveCfg = Debug|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug|x64.ActiveCfg = Debug|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release|Win32.ActiveCfg = Release|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release|x64.ActiveCfg = Release|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug|Win32.Build.0 = Debug|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug|x64.Build.0 = Debug|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release|Win32.Build.0 = Release|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release|x64.Build.0 = Release|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Debug-DLL|x64.Build.0 = Debug|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release-DLL|Win32.Build.0 = Release|Win32
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release-DLL|x64.ActiveCfg = Release|x64
+		{B3F26242-A43D-4F77-A84C-0F478741A061}.Release-DLL|x64.Build.0 = Release|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug|Win32.ActiveCfg = Debug|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug|x64.ActiveCfg = Debug|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release|Win32.ActiveCfg = Release|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release|x64.ActiveCfg = Release|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug|Win32.Build.0 = Debug|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug|x64.Build.0 = Debug|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release|Win32.Build.0 = Release|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release|x64.Build.0 = Release|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Debug-DLL|x64.Build.0 = Debug|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release-DLL|Win32.Build.0 = Release|Win32
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release-DLL|x64.ActiveCfg = Release|x64
+		{962380E0-1C06-8917-8F7F-1A02E0E93BE7}.Release-DLL|x64.Build.0 = Release|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug|Win32.ActiveCfg = Debug|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug|x64.ActiveCfg = Debug|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release|Win32.ActiveCfg = Release|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release|x64.ActiveCfg = Release|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug|Win32.Build.0 = Debug|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug|x64.Build.0 = Debug|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release|Win32.Build.0 = Release|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release|x64.Build.0 = Release|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Debug-DLL|x64.Build.0 = Debug|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release-DLL|Win32.Build.0 = Release|Win32
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release-DLL|x64.ActiveCfg = Release|x64
+		{485E6713-487D-F274-BDE7-5D29300C93FE}.Release-DLL|x64.Build.0 = Release|x64
 		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Debug|Win32.ActiveCfg = Debug|Win32
 		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Debug|x64.ActiveCfg = Debug|x64
 		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj
new file mode 100644
index 0000000..ebcdb21
--- /dev/null
+++ b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj
@@ -0,0 +1,202 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{962380E0-1C06-8917-8F7F-1A02E0E93BE7}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\openssl.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\zlib.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>h2_sockpair+trace_nosec_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Debug</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Debug</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>h2_sockpair+trace_nosec_test</TargetName>
+    <Linkage-grpc_dependencies_zlib>static</Linkage-grpc_dependencies_zlib>
+    <Configuration-grpc_dependencies_zlib>Release</Configuration-grpc_dependencies_zlib>
+    <Linkage-grpc_dependencies_openssl>static</Linkage-grpc_dependencies_openssl>
+    <Configuration-grpc_dependencies_openssl>Release</Configuration-grpc_dependencies_openssl>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(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="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(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="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(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="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\fixtures\h2_sockpair+trace.c">
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\test/end2end/tests\end2end_nosec_tests\end2end_nosec_tests.vcxproj">
+      <Project>{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util_unsecure\grpc_test_util_unsecure.vcxproj">
+      <Project>{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_unsecure\grpc_unsecure.vcxproj">
+      <Project>{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr_test_util\gpr_test_util.vcxproj">
+      <Project>{EAB0A629-17A9-44DB-B5FF-E91A721FE037}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(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')" />
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+</Project>
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diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj.filters b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj.filters
new file mode 100644
index 0000000..f17a26b
--- /dev/null
+++ b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_nosec_test/h2_sockpair+trace_nosec_test.vcxproj.filters
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\fixtures\h2_sockpair+trace.c">
+      <Filter>test\core\end2end\fixtures</Filter>
+    </ClCompile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="test">
+      <UniqueIdentifier>{6d58c14e-3f26-3100-9c99-d3c5505be59b}</UniqueIdentifier>
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+    <Filter Include="test\core">
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+    <Filter Include="test\core\end2end">
+      <UniqueIdentifier>{4a8803f6-4eac-9461-4ba4-36bab3c9163d}</UniqueIdentifier>
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+
diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_test/h2_sockpair+trace_test.vcxproj b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_test/h2_sockpair+trace_test.vcxproj
new file mode 100644
index 0000000..44427fb
--- /dev/null
+++ b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair+trace_test/h2_sockpair+trace_test.vcxproj
@@ -0,0 +1,205 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(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>
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index 0000000..5f4e43f
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diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair_1byte_test/h2_sockpair_1byte_test.vcxproj.filters b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair_1byte_test/h2_sockpair_1byte_test.vcxproj.filters
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diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair_nosec_test/h2_sockpair_nosec_test.vcxproj b/vsprojects/vcxproj/test/end2end/fixtures/h2_sockpair_nosec_test/h2_sockpair_nosec_test.vcxproj
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