Merge pull request #5914 from thought-machine/fix_slow_string_read

Make grpc-python ByteBuffer.bytes() linear
diff --git a/BUILD b/BUILD
index 514aea8..2c2cce7 100644
--- a/BUILD
+++ b/BUILD
@@ -163,7 +163,6 @@
     "src/core/channel/channel_stack.h",
     "src/core/channel/channel_stack_builder.h",
     "src/core/channel/client_channel.h",
-    "src/core/channel/client_uchannel.h",
     "src/core/channel/compress_filter.h",
     "src/core/channel/connected_channel.h",
     "src/core/channel/context.h",
@@ -305,7 +304,6 @@
     "src/core/channel/channel_stack.c",
     "src/core/channel/channel_stack_builder.c",
     "src/core/channel/client_channel.c",
-    "src/core/channel/client_uchannel.c",
     "src/core/channel/compress_filter.c",
     "src/core/channel/connected_channel.c",
     "src/core/channel/http_client_filter.c",
@@ -537,7 +535,6 @@
     "src/core/channel/channel_stack.h",
     "src/core/channel/channel_stack_builder.h",
     "src/core/channel/client_channel.h",
-    "src/core/channel/client_uchannel.h",
     "src/core/channel/compress_filter.h",
     "src/core/channel/connected_channel.h",
     "src/core/channel/context.h",
@@ -666,7 +663,6 @@
     "src/core/channel/channel_stack.c",
     "src/core/channel/channel_stack_builder.c",
     "src/core/channel/client_channel.c",
-    "src/core/channel/client_uchannel.c",
     "src/core/channel/compress_filter.c",
     "src/core/channel/connected_channel.c",
     "src/core/channel/http_client_filter.c",
@@ -1367,7 +1363,6 @@
     "src/core/channel/channel_stack.c",
     "src/core/channel/channel_stack_builder.c",
     "src/core/channel/client_channel.c",
-    "src/core/channel/client_uchannel.c",
     "src/core/channel/compress_filter.c",
     "src/core/channel/connected_channel.c",
     "src/core/channel/http_client_filter.c",
@@ -1544,7 +1539,6 @@
     "src/core/channel/channel_stack.h",
     "src/core/channel/channel_stack_builder.h",
     "src/core/channel/client_channel.h",
-    "src/core/channel/client_uchannel.h",
     "src/core/channel/compress_filter.h",
     "src/core/channel/connected_channel.h",
     "src/core/channel/context.h",
diff --git a/Makefile b/Makefile
index c7f7c9c..0e2b890 100644
--- a/Makefile
+++ b/Makefile
@@ -1084,7 +1084,6 @@
 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
-h2_uchannel_test: $(BINDIR)/$(CONFIG)/h2_uchannel_test
 h2_uds_test: $(BINDIR)/$(CONFIG)/h2_uds_test
 h2_uds+poll_test: $(BINDIR)/$(CONFIG)/h2_uds+poll_test
 h2_census_nosec_test: $(BINDIR)/$(CONFIG)/h2_census_nosec_test
@@ -1098,7 +1097,6 @@
 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
 
@@ -1307,7 +1305,6 @@
   $(BINDIR)/$(CONFIG)/h2_ssl_test \
   $(BINDIR)/$(CONFIG)/h2_ssl+poll_test \
   $(BINDIR)/$(CONFIG)/h2_ssl_proxy_test \
-  $(BINDIR)/$(CONFIG)/h2_uchannel_test \
   $(BINDIR)/$(CONFIG)/h2_uds_test \
   $(BINDIR)/$(CONFIG)/h2_uds+poll_test \
   $(BINDIR)/$(CONFIG)/h2_census_nosec_test \
@@ -1321,7 +1318,6 @@
   $(BINDIR)/$(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 \
 
@@ -1548,8 +1544,6 @@
 	$(Q) $(BINDIR)/$(CONFIG)/lame_client_test || ( echo test lame_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing message_compress_test"
 	$(Q) $(BINDIR)/$(CONFIG)/message_compress_test || ( echo test message_compress_test failed ; exit 1 )
-	$(E) "[RUN]     Testing mlog_test"
-	$(Q) $(BINDIR)/$(CONFIG)/mlog_test || ( echo test mlog_test failed ; exit 1 )
 	$(E) "[RUN]     Testing multiple_server_queues_test"
 	$(Q) $(BINDIR)/$(CONFIG)/multiple_server_queues_test || ( echo test multiple_server_queues_test failed ; exit 1 )
 	$(E) "[RUN]     Testing murmur_hash_test"
@@ -1629,6 +1623,8 @@
 flaky_test_c: buildtests_c
 	$(E) "[RUN]     Testing lb_policies_test"
 	$(Q) $(BINDIR)/$(CONFIG)/lb_policies_test || ( echo test lb_policies_test failed ; exit 1 )
+	$(E) "[RUN]     Testing mlog_test"
+	$(Q) $(BINDIR)/$(CONFIG)/mlog_test || ( echo test mlog_test failed ; exit 1 )
 
 
 test_cxx: test_zookeeper buildtests_cxx
@@ -2414,7 +2410,6 @@
     src/core/channel/channel_stack.c \
     src/core/channel/channel_stack_builder.c \
     src/core/channel/client_channel.c \
-    src/core/channel/client_uchannel.c \
     src/core/channel/compress_filter.c \
     src/core/channel/connected_channel.c \
     src/core/channel/http_client_filter.c \
@@ -2775,7 +2770,6 @@
     src/core/channel/channel_stack.c \
     src/core/channel/channel_stack_builder.c \
     src/core/channel/client_channel.c \
-    src/core/channel/client_uchannel.c \
     src/core/channel/compress_filter.c \
     src/core/channel/connected_channel.c \
     src/core/channel/http_client_filter.c \
@@ -13052,38 +13046,6 @@
 endif
 
 
-H2_UCHANNEL_TEST_SRC = \
-    test/core/end2end/fixtures/h2_uchannel.c \
-
-H2_UCHANNEL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_UCHANNEL_TEST_SRC))))
-ifeq ($(NO_SECURE),true)
-
-# You can't build secure targets if you don't have OpenSSL.
-
-$(BINDIR)/$(CONFIG)/h2_uchannel_test: openssl_dep_error
-
-else
-
-
-
-$(BINDIR)/$(CONFIG)/h2_uchannel_test: $(H2_UCHANNEL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.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_UCHANNEL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libend2end_tests.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_uchannel_test
-
-endif
-
-$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_uchannel.o:  $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-
-deps_h2_uchannel_test: $(H2_UCHANNEL_TEST_OBJS:.o=.dep)
-
-ifneq ($(NO_SECURE),true)
-ifneq ($(NO_DEPS),true)
--include $(H2_UCHANNEL_TEST_OBJS:.o=.dep)
-endif
-endif
-
-
 H2_UDS_TEST_SRC = \
     test/core/end2end/fixtures/h2_uds.c \
 
@@ -13368,26 +13330,6 @@
 endif
 
 
-H2_UCHANNEL_NOSEC_TEST_SRC = \
-    test/core/end2end/fixtures/h2_uchannel.c \
-
-H2_UCHANNEL_NOSEC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(H2_UCHANNEL_NOSEC_TEST_SRC))))
-
-
-$(BINDIR)/$(CONFIG)/h2_uchannel_nosec_test: $(H2_UCHANNEL_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_UCHANNEL_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_uchannel_nosec_test
-
-$(OBJDIR)/$(CONFIG)/test/core/end2end/fixtures/h2_uchannel.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_uchannel_nosec_test: $(H2_UCHANNEL_NOSEC_TEST_OBJS:.o=.dep)
-
-ifneq ($(NO_DEPS),true)
--include $(H2_UCHANNEL_NOSEC_TEST_OBJS:.o=.dep)
-endif
-
-
 H2_UDS_NOSEC_TEST_SRC = \
     test/core/end2end/fixtures/h2_uds.c \
 
diff --git a/binding.gyp b/binding.gyp
index 5f9dfd9..c166977 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -565,7 +565,6 @@
         'src/core/channel/channel_stack.c',
         'src/core/channel/channel_stack_builder.c',
         'src/core/channel/client_channel.c',
-        'src/core/channel/client_uchannel.c',
         'src/core/channel/compress_filter.c',
         'src/core/channel/connected_channel.c',
         'src/core/channel/http_client_filter.c',
diff --git a/build.yaml b/build.yaml
index deec44f..9773490 100644
--- a/build.yaml
+++ b/build.yaml
@@ -253,7 +253,6 @@
   - src/core/channel/channel_stack.h
   - src/core/channel/channel_stack_builder.h
   - src/core/channel/client_channel.h
-  - src/core/channel/client_uchannel.h
   - src/core/channel/compress_filter.h
   - src/core/channel/connected_channel.h
   - src/core/channel/context.h
@@ -375,7 +374,6 @@
   - src/core/channel/channel_stack.c
   - src/core/channel/channel_stack_builder.c
   - src/core/channel/client_channel.c
-  - src/core/channel/client_uchannel.c
   - src/core/channel/compress_filter.c
   - src/core/channel/connected_channel.c
   - src/core/channel/http_client_filter.c
@@ -1716,6 +1714,7 @@
   - gpr_test_util
   - gpr
 - name: mlog_test
+  flaky: true
   build: test
   language: c
   src:
diff --git a/config.m4 b/config.m4
index 91b87e2..2d42c40 100644
--- a/config.m4
+++ b/config.m4
@@ -87,7 +87,6 @@
     src/core/channel/channel_stack.c \
     src/core/channel/channel_stack_builder.c \
     src/core/channel/client_channel.c \
-    src/core/channel/client_uchannel.c \
     src/core/channel/compress_filter.c \
     src/core/channel/connected_channel.c \
     src/core/channel/http_client_filter.c \
diff --git a/gRPC.podspec b/gRPC.podspec
index 86121c9..65f24a6 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -167,7 +167,6 @@
                       'src/core/channel/channel_stack.h',
                       'src/core/channel/channel_stack_builder.h',
                       'src/core/channel/client_channel.h',
-                      'src/core/channel/client_uchannel.h',
                       'src/core/channel/compress_filter.h',
                       'src/core/channel/connected_channel.h',
                       'src/core/channel/context.h',
@@ -322,7 +321,6 @@
                       'src/core/channel/channel_stack.c',
                       'src/core/channel/channel_stack_builder.c',
                       'src/core/channel/client_channel.c',
-                      'src/core/channel/client_uchannel.c',
                       'src/core/channel/compress_filter.c',
                       'src/core/channel/connected_channel.c',
                       'src/core/channel/http_client_filter.c',
@@ -497,7 +495,6 @@
                               'src/core/channel/channel_stack.h',
                               'src/core/channel/channel_stack_builder.h',
                               'src/core/channel/client_channel.h',
-                              'src/core/channel/client_uchannel.h',
                               'src/core/channel/compress_filter.h',
                               'src/core/channel/connected_channel.h',
                               'src/core/channel/context.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index c062622..0873286 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -163,7 +163,6 @@
   s.files += %w( src/core/channel/channel_stack.h )
   s.files += %w( src/core/channel/channel_stack_builder.h )
   s.files += %w( src/core/channel/client_channel.h )
-  s.files += %w( src/core/channel/client_uchannel.h )
   s.files += %w( src/core/channel/compress_filter.h )
   s.files += %w( src/core/channel/connected_channel.h )
   s.files += %w( src/core/channel/context.h )
@@ -305,7 +304,6 @@
   s.files += %w( src/core/channel/channel_stack.c )
   s.files += %w( src/core/channel/channel_stack_builder.c )
   s.files += %w( src/core/channel/client_channel.c )
-  s.files += %w( src/core/channel/client_uchannel.c )
   s.files += %w( src/core/channel/compress_filter.c )
   s.files += %w( src/core/channel/connected_channel.c )
   s.files += %w( src/core/channel/http_client_filter.c )
diff --git a/package.json b/package.json
index 371dfdc..bc15183 100644
--- a/package.json
+++ b/package.json
@@ -105,7 +105,6 @@
     "src/core/channel/channel_stack.h",
     "src/core/channel/channel_stack_builder.h",
     "src/core/channel/client_channel.h",
-    "src/core/channel/client_uchannel.h",
     "src/core/channel/compress_filter.h",
     "src/core/channel/connected_channel.h",
     "src/core/channel/context.h",
@@ -247,7 +246,6 @@
     "src/core/channel/channel_stack.c",
     "src/core/channel/channel_stack_builder.c",
     "src/core/channel/client_channel.c",
-    "src/core/channel/client_uchannel.c",
     "src/core/channel/compress_filter.c",
     "src/core/channel/connected_channel.c",
     "src/core/channel/http_client_filter.c",
diff --git a/package.xml b/package.xml
index a0d8bfd..95bc835 100644
--- a/package.xml
+++ b/package.xml
@@ -167,7 +167,6 @@
     <file baseinstalldir="/" name="src/core/channel/channel_stack.h" role="src" />
     <file baseinstalldir="/" name="src/core/channel/channel_stack_builder.h" role="src" />
     <file baseinstalldir="/" name="src/core/channel/client_channel.h" role="src" />
-    <file baseinstalldir="/" name="src/core/channel/client_uchannel.h" role="src" />
     <file baseinstalldir="/" name="src/core/channel/compress_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/channel/connected_channel.h" role="src" />
     <file baseinstalldir="/" name="src/core/channel/context.h" role="src" />
@@ -309,7 +308,6 @@
     <file baseinstalldir="/" name="src/core/channel/channel_stack.c" role="src" />
     <file baseinstalldir="/" name="src/core/channel/channel_stack_builder.c" role="src" />
     <file baseinstalldir="/" name="src/core/channel/client_channel.c" role="src" />
-    <file baseinstalldir="/" name="src/core/channel/client_uchannel.c" role="src" />
     <file baseinstalldir="/" name="src/core/channel/compress_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/channel/connected_channel.c" role="src" />
     <file baseinstalldir="/" name="src/core/channel/http_client_filter.c" role="src" />
diff --git a/src/compiler/cpp_generator.cc b/src/compiler/cpp_generator.cc
index 97295be..206a6e1 100644
--- a/src/compiler/cpp_generator.cc
+++ b/src/compiler/cpp_generator.cc
@@ -83,6 +83,28 @@
 }
 }  // namespace
 
+template<class T, size_t N>
+T *array_end(T (&array)[N]) { return array + N; }
+
+void PrintIncludes(grpc::protobuf::io::Printer *printer, const std::vector<grpc::string>& headers, const Parameters &params) {
+  std::map<grpc::string, grpc::string> vars;
+
+  vars["l"] = params.use_system_headers ? '<' : '"';
+  vars["r"] = params.use_system_headers ? '>' : '"';
+
+  if (!params.grpc_search_path.empty()) {
+    vars["l"] += params.grpc_search_path;
+    if (params.grpc_search_path.back() != '/') {
+      vars["l"] += '/';
+    }
+  }
+
+  for (auto i = headers.begin(); i != headers.end(); i++) {
+    vars["h"] = *i;
+    printer->Print(vars, "#include $l$$h$$r$\n");
+  }
+}
+
 grpc::string GetHeaderPrologue(const grpc::protobuf::FileDescriptor *file,
                                const Parameters &params) {
   grpc::string output;
@@ -111,36 +133,46 @@
 
 grpc::string GetHeaderIncludes(const grpc::protobuf::FileDescriptor *file,
                                const Parameters &params) {
-  grpc::string temp =
-      "#include <grpc++/impl/codegen/async_stream.h>\n"
-      "#include <grpc++/impl/codegen/async_unary_call.h>\n"
-      "#include <grpc++/impl/codegen/proto_utils.h>\n"
-      "#include <grpc++/impl/codegen/rpc_method.h>\n"
-      "#include <grpc++/impl/codegen/service_type.h>\n"
-      "#include <grpc++/impl/codegen/status.h>\n"
-      "#include <grpc++/impl/codegen/stub_options.h>\n"
-      "#include <grpc++/impl/codegen/sync_stream.h>\n"
-      "\n"
-      "namespace grpc {\n"
-      "class CompletionQueue;\n"
-      "class RpcService;\n"
-      "class ServerCompletionQueue;\n"
-      "class ServerContext;\n"
-      "}  // namespace grpc\n\n";
+  grpc::string output;
+  {
+    // Scope the output stream so it closes and finalizes output to the string.
+    grpc::protobuf::io::StringOutputStream output_stream(&output);
+    grpc::protobuf::io::Printer printer(&output_stream, '$');
+    std::map<grpc::string, grpc::string> vars;
 
-  if (!file->package().empty()) {
-    std::vector<grpc::string> parts =
-        grpc_generator::tokenize(file->package(), ".");
+    static const char *headers_strs[] = {
+      "grpc++/impl/codegen/async_stream.h",
+      "grpc++/impl/codegen/async_unary_call.h",
+      "grpc++/impl/codegen/proto_utils.h",
+      "grpc++/impl/codegen/rpc_method.h",
+      "grpc++/impl/codegen/service_type.h",
+      "grpc++/impl/codegen/status.h",
+      "grpc++/impl/codegen/stub_options.h",
+      "grpc++/impl/codegen/sync_stream.h"
+    };
+    std::vector<grpc::string> headers(headers_strs, array_end(headers_strs));
+    PrintIncludes(&printer, headers, params);
+    printer.Print(vars, "\n");
+    printer.Print(vars, "namespace grpc {\n");
+    printer.Print(vars, "class CompletionQueue;\n");
+    printer.Print(vars, "class Channel;\n");
+    printer.Print(vars, "class RpcService;\n");
+    printer.Print(vars, "class ServerCompletionQueue;\n");
+    printer.Print(vars, "class ServerContext;\n");
+    printer.Print(vars, "}  // namespace grpc\n\n");
 
-    for (auto part = parts.begin(); part != parts.end(); part++) {
-      temp.append("namespace ");
-      temp.append(*part);
-      temp.append(" {\n");
+    if (!file->package().empty()) {
+      std::vector<grpc::string> parts =
+          grpc_generator::tokenize(file->package(), ".");
+
+      for (auto part = parts.begin(); part != parts.end(); part++) {
+        vars["part"] = *part;
+        printer.Print(vars, "namespace $part$ {\n");
+      }
+      printer.Print(vars, "\n");
     }
-    temp.append("\n");
   }
-
-  return temp;
+  return output;
 }
 
 void PrintHeaderClientMethodInterfaces(
@@ -852,7 +884,7 @@
 }
 
 grpc::string GetSourceIncludes(const grpc::protobuf::FileDescriptor *file,
-                               const Parameters &param) {
+                               const Parameters &params) {
   grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
@@ -860,16 +892,18 @@
     grpc::protobuf::io::Printer printer(&output_stream, '$');
     std::map<grpc::string, grpc::string> vars;
 
-    printer.Print(vars, "#include <grpc++/impl/codegen/async_stream.h>\n");
-    printer.Print(vars, "#include <grpc++/impl/codegen/async_unary_call.h>\n");
-    printer.Print(vars, "#include <grpc++/impl/codegen/channel_interface.h>\n");
-    printer.Print(vars, "#include <grpc++/impl/codegen/client_unary_call.h>\n");
-    printer.Print(vars,
-                  "#include <grpc++/impl/codegen/method_handler_impl.h>\n");
-    printer.Print(vars,
-                  "#include <grpc++/impl/codegen/rpc_service_method.h>\n");
-    printer.Print(vars, "#include <grpc++/impl/codegen/service_type.h>\n");
-    printer.Print(vars, "#include <grpc++/impl/codegen/sync_stream.h>\n");
+    static const char *headers_strs[] = {
+      "grpc++/impl/codegen/async_stream.h",
+      "grpc++/impl/codegen/async_unary_call.h",
+      "grpc++/impl/codegen/channel_interface.h",
+      "grpc++/impl/codegen/client_unary_call.h",
+      "grpc++/impl/codegen/method_handler_impl.h",
+      "grpc++/impl/codegen/rpc_service_method.h",
+      "grpc++/impl/codegen/service_type.h",
+      "grpc++/impl/codegen/sync_stream.h"
+    };
+    std::vector<grpc::string> headers(headers_strs, array_end(headers_strs));
+    PrintIncludes(&printer, headers, params);
 
     if (!file->package().empty()) {
       std::vector<grpc::string> parts =
diff --git a/src/compiler/cpp_generator.h b/src/compiler/cpp_generator.h
index 70c2e98..4f9de9d 100644
--- a/src/compiler/cpp_generator.h
+++ b/src/compiler/cpp_generator.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
@@ -42,6 +42,10 @@
 struct Parameters {
   // Puts the service into a namespace
   grpc::string services_namespace;
+  // Use system includes (<>) or local includes ("")
+  bool use_system_headers;
+  // Prefix to any grpc include
+  grpc::string grpc_search_path;
 };
 
 // Return the prologue of the generated header file.
diff --git a/src/compiler/cpp_plugin.cc b/src/compiler/cpp_plugin.cc
index 88c7049..d8ada48 100644
--- a/src/compiler/cpp_plugin.cc
+++ b/src/compiler/cpp_plugin.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
@@ -59,6 +59,7 @@
     }
 
     grpc_cpp_generator::Parameters generator_parameters;
+    generator_parameters.use_system_headers = true;
 
     if (!parameter.empty()) {
       std::vector<grpc::string> parameters_list =
@@ -70,6 +71,17 @@
           grpc_generator::tokenize(*parameter_string, "=");
         if (param[0] == "services_namespace") {
           generator_parameters.services_namespace = param[1];
+        } else if (param[0] == "use_system_headers") {
+          if (param[1] == "true") {
+            generator_parameters.use_system_headers = true;
+          } else if (param[1] == "false") {
+            generator_parameters.use_system_headers = false;
+          } else {
+            *error = grpc::string("Invalid parameter: ") + *parameter_string;
+            return false;
+          }
+        } else if (param[0] == "grpc_search_path") {
+          generator_parameters.grpc_search_path = param[1];
         } else {
           *error = grpc::string("Unknown parameter: ") + *parameter_string;
           return false;
diff --git a/src/core/census/grpc_plugin.c b/src/core/census/grpc_plugin.c
index 3be2a48..8d60a51 100644
--- a/src/core/census/grpc_plugin.c
+++ b/src/core/census/grpc_plugin.c
@@ -63,8 +63,6 @@
   }
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
                                    maybe_add_census_filter, NULL);
-  grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX,
-                                   maybe_add_census_filter, NULL);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_add_census_filter, NULL);
 }
diff --git a/src/core/channel/client_uchannel.c b/src/core/channel/client_uchannel.c
deleted file mode 100644
index d323272..0000000
--- a/src/core/channel/client_uchannel.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- *
- * Copyright 2015-2016, 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 "src/core/channel/client_uchannel.h"
-
-#include <string.h>
-
-#include "src/core/census/grpc_filter.h"
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/compress_filter.h"
-#include "src/core/channel/subchannel_call_holder.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/channel.h"
-#include "src/core/transport/connectivity_state.h"
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/sync.h>
-#include <grpc/support/useful.h>
-
-/** Microchannel (uchannel) implementation: a lightweight channel without any
- * load-balancing mechanisms meant for communication from within the core. */
-
-typedef struct client_uchannel_channel_data {
-  /** master channel - the grpc_channel instance that ultimately owns
-      this channel_data via its channel stack.
-      We occasionally use this to bump the refcount on the master channel
-      to keep ourselves alive through an asynchronous operation. */
-  grpc_channel_stack *owning_stack;
-
-  /** connectivity state being tracked */
-  grpc_connectivity_state_tracker state_tracker;
-
-  /** the subchannel wrapped by the microchannel */
-  grpc_connected_subchannel *connected_subchannel;
-
-  /** the callback used to stay subscribed to subchannel connectivity
-   * notifications */
-  grpc_closure connectivity_cb;
-
-  /** the current connectivity state of the wrapped subchannel */
-  grpc_connectivity_state subchannel_connectivity;
-
-  gpr_mu mu_state;
-} channel_data;
-
-typedef grpc_subchannel_call_holder call_data;
-
-static void monitor_subchannel(grpc_exec_ctx *exec_ctx, void *arg,
-                               bool iomgr_success) {
-  channel_data *chand = arg;
-  grpc_connectivity_state_set(exec_ctx, &chand->state_tracker,
-                              chand->subchannel_connectivity,
-                              "uchannel_monitor_subchannel");
-  grpc_connected_subchannel_notify_on_state_change(
-      exec_ctx, chand->connected_subchannel, NULL,
-      &chand->subchannel_connectivity, &chand->connectivity_cb);
-}
-
-static char *cuc_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return grpc_subchannel_call_holder_get_peer(exec_ctx, elem->call_data);
-}
-
-static void cuc_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
-                                          grpc_call_element *elem,
-                                          grpc_transport_stream_op *op) {
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
-  grpc_subchannel_call_holder_perform_op(exec_ctx, elem->call_data, op);
-}
-
-static void cuc_start_transport_op(grpc_exec_ctx *exec_ctx,
-                                   grpc_channel_element *elem,
-                                   grpc_transport_op *op) {
-  channel_data *chand = elem->channel_data;
-
-  grpc_exec_ctx_enqueue(exec_ctx, op->on_consumed, true, NULL);
-
-  GPR_ASSERT(op->set_accept_stream == false);
-  GPR_ASSERT(op->bind_pollset == NULL);
-
-  if (op->on_connectivity_state_change != NULL) {
-    grpc_connectivity_state_notify_on_state_change(
-        exec_ctx, &chand->state_tracker, op->connectivity_state,
-        op->on_connectivity_state_change);
-    op->on_connectivity_state_change = NULL;
-    op->connectivity_state = NULL;
-  }
-
-  if (op->disconnect) {
-    grpc_connectivity_state_set(exec_ctx, &chand->state_tracker,
-                                GRPC_CHANNEL_FATAL_FAILURE, "disconnect");
-  }
-}
-
-static int cuc_pick_subchannel(grpc_exec_ctx *exec_ctx, void *arg,
-                               grpc_metadata_batch *initial_metadata,
-                               grpc_connected_subchannel **connected_subchannel,
-                               grpc_closure *on_ready) {
-  channel_data *chand = arg;
-  GPR_ASSERT(initial_metadata != NULL);
-  *connected_subchannel = chand->connected_subchannel;
-  return 1;
-}
-
-/* Constructor for call_data */
-static void cuc_init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                               grpc_call_element_args *args) {
-  grpc_subchannel_call_holder_init(elem->call_data, cuc_pick_subchannel,
-                                   elem->channel_data, args->call_stack);
-}
-
-/* Destructor for call_data */
-static void cuc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
-                                  grpc_call_element *elem) {
-  grpc_subchannel_call_holder_destroy(exec_ctx, elem->call_data);
-}
-
-/* Constructor for channel_data */
-static void cuc_init_channel_elem(grpc_exec_ctx *exec_ctx,
-                                  grpc_channel_element *elem,
-                                  grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
-  memset(chand, 0, sizeof(*chand));
-  grpc_closure_init(&chand->connectivity_cb, monitor_subchannel, chand);
-  GPR_ASSERT(args->is_last);
-  GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter);
-  chand->owning_stack = args->channel_stack;
-  grpc_connectivity_state_init(&chand->state_tracker, GRPC_CHANNEL_IDLE,
-                               "client_uchannel");
-  gpr_mu_init(&chand->mu_state);
-}
-
-/* Destructor for channel_data */
-static void cuc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
-                                     grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
-  /* cancel subscription */
-  grpc_connected_subchannel_notify_on_state_change(
-      exec_ctx, chand->connected_subchannel, NULL, NULL,
-      &chand->connectivity_cb);
-  grpc_connectivity_state_destroy(exec_ctx, &chand->state_tracker);
-  gpr_mu_destroy(&chand->mu_state);
-  GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, chand->connected_subchannel,
-                                  "uchannel");
-}
-
-static void cuc_set_pollset(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                            grpc_pollset *pollset) {
-  call_data *calld = elem->call_data;
-  calld->pollset = pollset;
-}
-
-const grpc_channel_filter grpc_client_uchannel_filter = {
-    cuc_start_transport_stream_op, cuc_start_transport_op, sizeof(call_data),
-    cuc_init_call_elem, cuc_set_pollset, cuc_destroy_call_elem,
-    sizeof(channel_data), cuc_init_channel_elem, cuc_destroy_channel_elem,
-    cuc_get_peer, "client-uchannel",
-};
-
-grpc_connectivity_state grpc_client_uchannel_check_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) {
-  channel_data *chand = elem->channel_data;
-  grpc_connectivity_state out;
-  gpr_mu_lock(&chand->mu_state);
-  out = grpc_connectivity_state_check(&chand->state_tracker);
-  gpr_mu_unlock(&chand->mu_state);
-  return out;
-}
-
-void grpc_client_uchannel_watch_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset,
-    grpc_connectivity_state *state, grpc_closure *on_complete) {
-  channel_data *chand = elem->channel_data;
-  gpr_mu_lock(&chand->mu_state);
-  grpc_connectivity_state_notify_on_state_change(
-      exec_ctx, &chand->state_tracker, state, on_complete);
-  gpr_mu_unlock(&chand->mu_state);
-}
-
-grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel,
-                                          grpc_channel_args *args) {
-  grpc_channel *channel = NULL;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
-  channel =
-      grpc_channel_create(&exec_ctx, NULL, args, GRPC_CLIENT_UCHANNEL, NULL);
-
-  return channel;
-}
-
-void grpc_client_uchannel_set_connected_subchannel(
-    grpc_channel *uchannel, grpc_connected_subchannel *connected_subchannel) {
-  grpc_channel_element *elem =
-      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(uchannel));
-  channel_data *chand = elem->channel_data;
-  GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter);
-  gpr_mu_lock(&chand->mu_state);
-  chand->connected_subchannel = connected_subchannel;
-  GRPC_CONNECTED_SUBCHANNEL_REF(connected_subchannel, "uchannel");
-  gpr_mu_unlock(&chand->mu_state);
-}
diff --git a/src/core/channel/client_uchannel.h b/src/core/channel/client_uchannel.h
deleted file mode 100644
index 8bb288e..0000000
--- a/src/core/channel/client_uchannel.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- *
- * Copyright 2015-2016, 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_CORE_CHANNEL_CLIENT_UCHANNEL_H
-#define GRPC_CORE_CHANNEL_CLIENT_UCHANNEL_H
-
-#include "src/core/channel/channel_stack.h"
-#include "src/core/client_config/resolver.h"
-
-#define GRPC_MICROCHANNEL_SUBCHANNEL_ARG "grpc.microchannel_subchannel_key"
-
-/* A client microchannel (aka uchannel) is a channel wrapping a subchannel, for
- * the purposes of lightweight RPC communications from within the core.*/
-
-extern const grpc_channel_filter grpc_client_uchannel_filter;
-
-grpc_connectivity_state grpc_client_uchannel_check_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect);
-
-void grpc_client_uchannel_watch_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset,
-    grpc_connectivity_state *state, grpc_closure *on_complete);
-
-grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel,
-                                          grpc_channel_args *args);
-
-void grpc_client_uchannel_set_connected_subchannel(
-    grpc_channel *uchannel, grpc_connected_subchannel *connected_subchannel);
-
-#endif /* GRPC_CORE_CHANNEL_CLIENT_UCHANNEL_H */
diff --git a/src/core/channel/subchannel_call_holder.h b/src/core/channel/subchannel_call_holder.h
index 9086cdc..84b4657 100644
--- a/src/core/channel/subchannel_call_holder.h
+++ b/src/core/channel/subchannel_call_holder.h
@@ -55,15 +55,14 @@
     for initial metadata before trying to create a call object,
     and handling cancellation gracefully.
 
-    Both the channel and uchannel filter use this as their call_data. */
+    The channel filter uses this as their call_data. */
 typedef struct grpc_subchannel_call_holder {
   /** either 0 for no call, 1 for cancelled, or a pointer to a
       grpc_subchannel_call */
   gpr_atm subchannel_call;
   /** Helper function to choose the subchannel on which to create
       the call object. Channel filter delegates to the load
-      balancing policy (once it's ready); uchannel returns
-      immediately */
+      balancing policy (once it's ready). */
   grpc_subchannel_call_holder_pick_subchannel pick_subchannel;
   void *pick_subchannel_arg;
 
diff --git a/src/core/client_config/resolvers/dns_resolver.c b/src/core/client_config/resolvers/dns_resolver.c
index e28e475..2b2ee97 100644
--- a/src/core/client_config/resolvers/dns_resolver.c
+++ b/src/core/client_config/resolvers/dns_resolver.c
@@ -42,8 +42,14 @@
 #include "src/core/client_config/lb_policy_registry.h"
 #include "src/core/iomgr/resolve_address.h"
 #include "src/core/iomgr/timer.h"
+#include "src/core/support/backoff.h"
 #include "src/core/support/string.h"
 
+#define BACKOFF_MULTIPLIER 1.6
+#define BACKOFF_JITTER 0.2
+#define BACKOFF_MIN_SECONDS 1
+#define BACKOFF_MAX_SECONDS 120
+
 typedef struct {
   /** base class: must be first */
   grpc_resolver base;
@@ -75,6 +81,8 @@
   /** retry timer */
   bool have_retry_timer;
   grpc_timer retry_timer;
+  /** retry backoff state */
+  gpr_backoff backoff_state;
 } dns_resolver;
 
 static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r);
@@ -111,6 +119,7 @@
   dns_resolver *r = (dns_resolver *)resolver;
   gpr_mu_lock(&r->mu);
   if (!r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
     dns_start_resolving_locked(r);
   }
   gpr_mu_unlock(&r->mu);
@@ -125,6 +134,7 @@
   r->next_completion = on_complete;
   r->target_config = target_config;
   if (r->resolved_version == 0 && !r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
     dns_start_resolving_locked(r);
   } else {
     dns_maybe_finish_next_locked(exec_ctx, r);
@@ -185,17 +195,16 @@
     grpc_resolved_addresses_destroy(addresses);
     gpr_free(subchannels);
   } else {
-    int retry_seconds = 15;
-    gpr_log(GPR_DEBUG, "dns resolution failed: retrying in %d seconds",
-            retry_seconds);
+    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+    gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now);
+    gpr_timespec timeout = gpr_time_sub(next_try, now);
+    gpr_log(GPR_DEBUG, "dns resolution failed: retrying in %d.%09d seconds",
+            timeout.tv_sec, timeout.tv_nsec);
     GPR_ASSERT(!r->have_retry_timer);
     r->have_retry_timer = true;
-    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
     GRPC_RESOLVER_REF(&r->base, "retry-timer");
-    grpc_timer_init(
-        exec_ctx, &r->retry_timer,
-        gpr_time_add(now, gpr_time_from_seconds(retry_seconds, GPR_TIMESPAN)),
-        dns_on_retry_timer, r, now);
+    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r,
+                    now);
   }
   if (r->resolved_config) {
     grpc_client_config_unref(exec_ctx, r->resolved_config);
@@ -263,6 +272,8 @@
   r->name = gpr_strdup(path);
   r->default_port = gpr_strdup(default_port);
   r->subchannel_factory = args->subchannel_factory;
+  gpr_backoff_init(&r->backoff_state, BACKOFF_MULTIPLIER, BACKOFF_JITTER,
+                   BACKOFF_MIN_SECONDS * 1000, BACKOFF_MAX_SECONDS * 1000);
   grpc_subchannel_factory_ref(r->subchannel_factory);
   r->lb_policy_name = gpr_strdup(lb_policy_name);
   return &r->base;
diff --git a/src/core/iomgr/fd_posix.c b/src/core/iomgr/fd_posix.c
index 3edafa0..b4d038a 100644
--- a/src/core/iomgr/fd_posix.c
+++ b/src/core/iomgr/fd_posix.c
@@ -72,9 +72,6 @@
 static gpr_mu fd_freelist_mu;
 
 static void freelist_fd(grpc_fd *fd) {
-  // Note that this function must be called after a release store (or
-  // full-barrier operation) on refst so that prior actions on the fd are
-  // ordered before the fd becomes visible to the freelist
   gpr_mu_lock(&fd_freelist_mu);
   fd->freelist_next = fd_freelist;
   fd_freelist = fd;
@@ -95,6 +92,7 @@
     gpr_mu_init(&r->mu);
   }
 
+  gpr_mu_lock(&r->mu);
   r->shutdown = 0;
   r->read_closure = CLOSURE_NOT_READY;
   r->write_closure = CLOSURE_NOT_READY;
@@ -106,11 +104,9 @@
   r->on_done_closure = NULL;
   r->closed = 0;
   r->released = 0;
-  // The last operation on r before returning it should be a release-store
-  // so that all the above fields are globally visible before the value of
-  // r could escape to another thread. Our refcount itself needs a release-store
-  // so use this
   gpr_atm_rel_store(&r->refst, 1);
+  gpr_mu_unlock(&r->mu);
+
   return r;
 }
 
diff --git a/src/core/support/backoff.c b/src/core/support/backoff.c
index 7458219..4ccfb77 100644
--- a/src/core/support/backoff.c
+++ b/src/core/support/backoff.c
@@ -69,3 +69,8 @@
   return gpr_time_add(
       now, gpr_time_from_millis(backoff->current_timeout_millis, GPR_TIMESPAN));
 }
+
+void gpr_backoff_reset(gpr_backoff *backoff) {
+  // forces step() to return a timeout of min_timeout_millis
+  backoff->current_timeout_millis = 0;
+}
diff --git a/src/core/support/backoff.h b/src/core/support/backoff.h
index f7730fd..0f933c3 100644
--- a/src/core/support/backoff.h
+++ b/src/core/support/backoff.h
@@ -61,5 +61,8 @@
 gpr_timespec gpr_backoff_begin(gpr_backoff *backoff, gpr_timespec now);
 /// Step a retry loop: returns a timespec for the NEXT retry
 gpr_timespec gpr_backoff_step(gpr_backoff *backoff, gpr_timespec now);
+/// Reset the backoff, so the next gpr_backoff_step will be a gpr_backoff_begin
+/// instead
+void gpr_backoff_reset(gpr_backoff *backoff);
 
 #endif /* GRPC_CORE_SUPPORT_BACKOFF_H */
diff --git a/src/core/surface/channel_connectivity.c b/src/core/surface/channel_connectivity.c
index 2dd4fce..1826793 100644
--- a/src/core/surface/channel_connectivity.c
+++ b/src/core/surface/channel_connectivity.c
@@ -37,7 +37,6 @@
 #include <grpc/support/log.h>
 
 #include "src/core/channel/client_channel.h"
-#include "src/core/channel/client_uchannel.h"
 #include "src/core/iomgr/timer.h"
 #include "src/core/surface/api_trace.h"
 #include "src/core/surface/completion_queue.h"
@@ -58,12 +57,6 @@
     grpc_exec_ctx_finish(&exec_ctx);
     return state;
   }
-  if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    state = grpc_client_uchannel_check_connectivity_state(
-        &exec_ctx, client_channel_elem, try_to_connect);
-    grpc_exec_ctx_finish(&exec_ctx);
-    return state;
-  }
   gpr_log(GPR_ERROR,
           "grpc_channel_check_connectivity_state called on something that is "
           "not a (u)client channel, but '%s'",
@@ -98,9 +91,6 @@
   if (client_channel_elem->filter == &grpc_client_channel_filter) {
     GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, w->channel,
                                 "watch_channel_connectivity");
-  } else if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, w->channel,
-                                "watch_uchannel_connectivity");
   } else {
     abort();
   }
@@ -209,11 +199,8 @@
     grpc_client_channel_watch_connectivity_state(&exec_ctx, client_channel_elem,
                                                  grpc_cq_pollset(cq), &w->state,
                                                  &w->on_complete);
-  } else if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    GRPC_CHANNEL_INTERNAL_REF(channel, "watch_uchannel_connectivity");
-    grpc_client_uchannel_watch_connectivity_state(
-        &exec_ctx, client_channel_elem, grpc_cq_pollset(cq), &w->state,
-        &w->on_complete);
+  } else {
+    abort();
   }
 
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/surface/channel_init.c b/src/core/surface/channel_init.c
index 538be84..ac962f3 100644
--- a/src/core/surface/channel_init.c
+++ b/src/core/surface/channel_init.c
@@ -112,8 +112,6 @@
       return "CLIENT_SUBCHANNEL";
     case GRPC_SERVER_CHANNEL:
       return "SERVER_CHANNEL";
-    case GRPC_CLIENT_UCHANNEL:
-      return "CLIENT_UCHANNEL";
     case GRPC_CLIENT_LAME_CHANNEL:
       return "CLIENT_LAME_CHANNEL";
     case GRPC_CLIENT_DIRECT_CHANNEL:
diff --git a/src/core/surface/channel_stack_type.c b/src/core/surface/channel_stack_type.c
index 6fd33d4..29bb770 100644
--- a/src/core/surface/channel_stack_type.c
+++ b/src/core/surface/channel_stack_type.c
@@ -39,8 +39,6 @@
   switch (type) {
     case GRPC_CLIENT_CHANNEL:
       return true;
-    case GRPC_CLIENT_UCHANNEL:
-      return true;
     case GRPC_CLIENT_SUBCHANNEL:
       return true;
     case GRPC_CLIENT_LAME_CHANNEL:
diff --git a/src/core/surface/channel_stack_type.h b/src/core/surface/channel_stack_type.h
index 846391a..75a1b9c 100644
--- a/src/core/surface/channel_stack_type.h
+++ b/src/core/surface/channel_stack_type.h
@@ -39,9 +39,6 @@
 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,
diff --git a/src/core/surface/init.c b/src/core/surface/init.c
index b507709..2ce50a0 100644
--- a/src/core/surface/init.c
+++ b/src/core/surface/init.c
@@ -45,7 +45,6 @@
 #include "src/core/channel/compress_filter.h"
 #include "src/core/channel/connected_channel.h"
 #include "src/core/channel/client_channel.h"
-#include "src/core/channel/client_uchannel.h"
 #include "src/core/channel/http_client_filter.h"
 #include "src/core/channel/http_server_filter.h"
 #include "src/core/client_config/lb_policy_registry.h"
@@ -112,9 +111,6 @@
   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);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter,
                                    (void *)&grpc_compress_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
@@ -134,8 +130,6 @@
                                    grpc_add_connected_filter, NULL);
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, append_filter,
                                    (void *)&grpc_client_channel_filter);
-  grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX, append_filter,
-                                   (void *)&grpc_client_uchannel_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_LAME_CHANNEL, INT_MAX,
                                    append_filter, (void *)&grpc_lame_filter);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter,
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 2d45818b6..51263b0 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -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
@@ -308,37 +308,30 @@
 }
 
 - (void)invokeCall {
-  __weak GRPCCall *weakSelf = self;
   [self invokeCallWithHeadersHandler:^(NSDictionary *headers) {
     // Response headers received.
-    GRPCCall *strongSelf = weakSelf;
-    if (strongSelf) {
-      strongSelf.responseHeaders = headers;
-      [strongSelf startNextRead];
-    }
+    self.responseHeaders = headers;
+    [self startNextRead];
   } completionHandler:^(NSError *error, NSDictionary *trailers) {
-    GRPCCall *strongSelf = weakSelf;
-    if (strongSelf) {
-      strongSelf.responseTrailers = trailers;
+    self.responseTrailers = trailers;
 
-      if (error) {
-        NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
-        if (error.userInfo) {
-          [userInfo addEntriesFromDictionary:error.userInfo];
-        }
-        userInfo[kGRPCTrailersKey] = strongSelf.responseTrailers;
-        // TODO(jcanizales): The C gRPC library doesn't guarantee that the headers block will be
-        // called before this one, so an error might end up with trailers but no headers. We
-        // shouldn't call finishWithError until ater both blocks are called. It is also when this is
-        // done that we can provide a merged view of response headers and trailers in a thread-safe
-        // way.
-        if (strongSelf.responseHeaders) {
-          userInfo[kGRPCHeadersKey] = strongSelf.responseHeaders;
-        }
-        error = [NSError errorWithDomain:error.domain code:error.code userInfo:userInfo];
+    if (error) {
+      NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+      if (error.userInfo) {
+        [userInfo addEntriesFromDictionary:error.userInfo];
       }
-      [strongSelf finishWithError:error];
+      userInfo[kGRPCTrailersKey] = self.responseTrailers;
+      // TODO(jcanizales): The C gRPC library doesn't guarantee that the headers block will be
+      // called before this one, so an error might end up with trailers but no headers. We
+      // shouldn't call finishWithError until ater both blocks are called. It is also when this is
+      // done that we can provide a merged view of response headers and trailers in a thread-safe
+      // way.
+      if (self.responseHeaders) {
+        userInfo[kGRPCHeadersKey] = self.responseHeaders;
+      }
+      error = [NSError errorWithDomain:error.domain code:error.code userInfo:userInfo];
     }
+    [self finishWithError:error];
   }];
   // Now that the RPC has been initiated, request writes can start.
   @synchronized(_requestWriter) {
@@ -377,7 +370,6 @@
       [strongSelf finishWithError:[NSError errorWithDomain:kGRPCErrorDomain
                                                       code:GRPCErrorCodeUnavailable
                                                   userInfo:@{NSLocalizedDescriptionKey: @"Connectivity lost."}]];
-      [[GRPCHost hostWithAddress:strongSelf->_host] disconnect];
     }
   }];
 }
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index fe3d51d..f6527e2 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -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
@@ -54,7 +54,9 @@
 
 - (void)finish {
   if (_handler) {
-    _handler();
+    void(^handler)() = _handler;
+    _handler = nil;
+    handler();
   }
 }
 @end
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index b9e7d8c..29506e6 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -81,7 +81,6 @@
   'src/core/channel/channel_stack.c',
   'src/core/channel/channel_stack_builder.c',
   'src/core/channel/client_channel.c',
-  'src/core/channel/client_uchannel.c',
   'src/core/channel/compress_filter.c',
   'src/core/channel/connected_channel.c',
   'src/core/channel/http_client_filter.c',
diff --git a/summerofcode/ideas.md b/summerofcode/ideas.md
index 83f2cec..d87cf1b 100644
--- a/summerofcode/ideas.md
+++ b/summerofcode/ideas.md
@@ -36,7 +36,7 @@
  * **Required skills:** Python programming language, PyPy Python interpreter.
  * **Likely mentors:** [Nathaniel Manista](https://github.com/nathanielmanistaatgoogle), [Masood Malekghassemi](https://github.com/soltanmm).
 1. Develop and test Python 3.5 Support for gRPC. Make necessary changes to port gRPC and package it for supported platforms.
- * **Required skills:** Python programming language, PyPy Python interpreter.
+ * **Required skills:** Python programming language, Python 3.5 interpreter.
  * **Likely mentors:** [Nathaniel Manista](https://github.com/nathanielmanistaatgoogle), [Masood Malekghassemi](https://github.com/soltanmm).
  
 gRPC Ruby/Java:
diff --git a/test/core/end2end/fixtures/h2_uchannel.c b/test/core/end2end/fixtures/h2_uchannel.c
deleted file mode 100644
index 25a4804..0000000
--- a/test/core/end2end/fixtures/h2_uchannel.c
+++ /dev/null
@@ -1,350 +0,0 @@
-/*
- *
- * Copyright 2015-2016, 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/core/end2end/end2end_tests.h"
-
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/host_port.h>
-#include <grpc/support/log.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/sync.h>
-#include <grpc/support/thd.h>
-#include <grpc/support/useful.h>
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/client_uchannel.h"
-#include "src/core/channel/connected_channel.h"
-#include "src/core/channel/http_client_filter.h"
-#include "src/core/channel/http_server_filter.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/iomgr/tcp_client.h"
-#include "src/core/surface/channel.h"
-#include "src/core/surface/server.h"
-#include "src/core/transport/chttp2_transport.h"
-#include "test/core/util/port.h"
-#include "test/core/util/test_config.h"
-
-typedef struct {
-  grpc_connector base;
-  gpr_refcount refs;
-
-  grpc_closure *notify;
-  grpc_connect_in_args args;
-  grpc_connect_out_args *result;
-
-  grpc_endpoint *tcp;
-
-  grpc_closure connected;
-} connector;
-
-static void connector_ref(grpc_connector *con) {
-  connector *c = (connector *)con;
-  gpr_ref(&c->refs);
-}
-
-static void connector_unref(grpc_exec_ctx *exec_ctx, grpc_connector *con) {
-  connector *c = (connector *)con;
-  if (gpr_unref(&c->refs)) {
-    gpr_free(c);
-  }
-}
-
-static void connected(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
-  connector *c = arg;
-  grpc_closure *notify;
-  grpc_endpoint *tcp = c->tcp;
-  if (tcp != NULL) {
-    c->result->transport =
-        grpc_create_chttp2_transport(exec_ctx, c->args.channel_args, tcp, 1);
-    grpc_chttp2_transport_start_reading(exec_ctx, c->result->transport, NULL,
-                                        0);
-    GPR_ASSERT(c->result->transport);
-  } else {
-    memset(c->result, 0, sizeof(*c->result));
-  }
-  notify = c->notify;
-  c->notify = NULL;
-  notify->cb(exec_ctx, notify->cb_arg, 1);
-}
-
-static void connector_shutdown(grpc_exec_ctx *exec_ctx, grpc_connector *con) {}
-
-static void connector_connect(grpc_exec_ctx *exec_ctx, grpc_connector *con,
-                              const grpc_connect_in_args *args,
-                              grpc_connect_out_args *result,
-                              grpc_closure *notify) {
-  connector *c = (connector *)con;
-  GPR_ASSERT(c->notify == NULL);
-  GPR_ASSERT(notify->cb);
-  c->notify = notify;
-  c->args = *args;
-  c->result = result;
-  c->tcp = NULL;
-  grpc_closure_init(&c->connected, connected, c);
-  grpc_tcp_client_connect(exec_ctx, &c->connected, &c->tcp,
-                          args->interested_parties, args->addr, args->addr_len,
-                          args->deadline);
-}
-
-static const grpc_connector_vtable connector_vtable = {
-    connector_ref, connector_unref, connector_shutdown, connector_connect};
-
-typedef struct {
-  grpc_subchannel_factory base;
-  gpr_refcount refs;
-  grpc_channel_args *merge_args;
-  grpc_channel *master;
-  grpc_subchannel **sniffed_subchannel;
-} subchannel_factory;
-
-static void subchannel_factory_ref(grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
-  gpr_ref(&f->refs);
-}
-
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
-  if (gpr_unref(&f->refs)) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master, "subchannel_factory");
-    grpc_channel_args_destroy(f->merge_args);
-    gpr_free(f);
-  }
-}
-
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *scf,
-    grpc_subchannel_args *args) {
-  subchannel_factory *f = (subchannel_factory *)scf;
-  connector *c = gpr_malloc(sizeof(*c));
-  grpc_channel_args *final_args =
-      grpc_channel_args_merge(args->args, f->merge_args);
-  grpc_subchannel *s;
-  memset(c, 0, sizeof(*c));
-  c->base.vtable = &connector_vtable;
-  gpr_ref_init(&c->refs, 1);
-  args->args = final_args;
-  s = grpc_subchannel_create(exec_ctx, &c->base, args);
-  grpc_connector_unref(exec_ctx, &c->base);
-  grpc_channel_args_destroy(final_args);
-  if (*f->sniffed_subchannel) {
-    GRPC_SUBCHANNEL_UNREF(exec_ctx, *f->sniffed_subchannel, "sniffed");
-  }
-  *f->sniffed_subchannel = s;
-  GRPC_SUBCHANNEL_REF(s, "sniffed");
-  return s;
-}
-
-static const grpc_subchannel_factory_vtable test_subchannel_factory_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
-
-/* The evil twin of grpc_insecure_channel_create. It allows the test to use the
- * custom-built sniffing subchannel_factory */
-grpc_channel *channel_create(const char *target, const grpc_channel_args *args,
-                             grpc_subchannel **sniffed_subchannel) {
-  grpc_channel *channel = NULL;
-  grpc_resolver *resolver;
-  subchannel_factory *f;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
-  channel =
-      grpc_channel_create(&exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-
-  f = gpr_malloc(sizeof(*f));
-  f->sniffed_subchannel = sniffed_subchannel;
-  f->base.vtable = &test_subchannel_factory_vtable;
-  gpr_ref_init(&f->refs, 1);
-  f->merge_args = grpc_channel_args_copy(args);
-  f->master = channel;
-  GRPC_CHANNEL_INTERNAL_REF(f->master, "test_subchannel_factory");
-  resolver = grpc_resolver_create(target, &f->base);
-  if (!resolver) {
-    return NULL;
-  }
-
-  grpc_client_channel_set_resolver(
-      &exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
-  GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_create");
-  grpc_subchannel_factory_unref(&exec_ctx, &f->base);
-
-  grpc_exec_ctx_finish(&exec_ctx);
-
-  return channel;
-}
-
-typedef struct micro_fullstack_fixture_data {
-  char *localaddr;
-  grpc_channel *master_channel;
-  grpc_subchannel *sniffed_subchannel;
-} micro_fullstack_fixture_data;
-
-static grpc_end2end_test_fixture chttp2_create_fixture_micro_fullstack(
-    grpc_channel_args *client_args, grpc_channel_args *server_args) {
-  grpc_end2end_test_fixture f;
-  int port = grpc_pick_unused_port_or_die();
-  micro_fullstack_fixture_data *ffd =
-      gpr_malloc(sizeof(micro_fullstack_fixture_data));
-  memset(&f, 0, sizeof(f));
-  memset(ffd, 0, sizeof(*ffd));
-
-  gpr_join_host_port(&ffd->localaddr, "127.0.0.1", port);
-
-  f.fixture_data = ffd;
-  f.cq = grpc_completion_queue_create(NULL);
-
-  return f;
-}
-
-grpc_connectivity_state g_state = GRPC_CHANNEL_IDLE;
-grpc_pollset_set *g_interested_parties;
-
-static void state_changed(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
-  if (g_state != GRPC_CHANNEL_READY) {
-    grpc_subchannel_notify_on_state_change(
-        exec_ctx, arg, g_interested_parties, &g_state,
-        grpc_closure_create(state_changed, arg));
-  }
-}
-
-static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
-  grpc_pollset_destroy(arg);
-}
-
-static grpc_connected_subchannel *connect_subchannel(grpc_subchannel *c) {
-  gpr_mu *mu;
-  grpc_pollset *pollset = gpr_malloc(grpc_pollset_size());
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_pollset_init(pollset, &mu);
-  g_interested_parties = grpc_pollset_set_create();
-  grpc_pollset_set_add_pollset(&exec_ctx, g_interested_parties, pollset);
-  grpc_subchannel_notify_on_state_change(&exec_ctx, c, g_interested_parties,
-                                         &g_state,
-                                         grpc_closure_create(state_changed, c));
-  grpc_exec_ctx_flush(&exec_ctx);
-  gpr_mu_lock(mu);
-  while (g_state != GRPC_CHANNEL_READY) {
-    grpc_pollset_worker *worker = NULL;
-    grpc_pollset_work(&exec_ctx, pollset, &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));
-    gpr_mu_unlock(mu);
-    grpc_exec_ctx_flush(&exec_ctx);
-    gpr_mu_lock(mu);
-  }
-  grpc_pollset_shutdown(&exec_ctx, pollset,
-                        grpc_closure_create(destroy_pollset, pollset));
-  grpc_pollset_set_destroy(g_interested_parties);
-  gpr_mu_unlock(mu);
-  grpc_exec_ctx_finish(&exec_ctx);
-  gpr_free(pollset);
-  return grpc_subchannel_get_connected_subchannel(c);
-}
-
-static void chttp2_init_client_micro_fullstack(grpc_end2end_test_fixture *f,
-                                               grpc_channel_args *client_args) {
-  micro_fullstack_fixture_data *ffd = f->fixture_data;
-  grpc_connectivity_state conn_state;
-  grpc_connected_subchannel *connected_subchannel;
-  char *ipv4_localaddr;
-
-  gpr_asprintf(&ipv4_localaddr, "ipv4:%s", ffd->localaddr);
-  ffd->master_channel =
-      channel_create(ipv4_localaddr, client_args, &ffd->sniffed_subchannel);
-  gpr_free(ipv4_localaddr);
-  gpr_log(GPR_INFO, "MASTER CHANNEL %p ", ffd->master_channel);
-  /* the following will block. That's ok for this test */
-  conn_state = grpc_channel_check_connectivity_state(ffd->master_channel,
-                                                     1 /* try to connect */);
-  GPR_ASSERT(conn_state == GRPC_CHANNEL_IDLE);
-
-  /* here sniffed_subchannel should be ready to use */
-  GPR_ASSERT(conn_state == GRPC_CHANNEL_IDLE);
-  GPR_ASSERT(ffd->sniffed_subchannel != NULL);
-
-  connected_subchannel = connect_subchannel(ffd->sniffed_subchannel);
-  f->client = grpc_client_uchannel_create(ffd->sniffed_subchannel, client_args);
-  grpc_client_uchannel_set_connected_subchannel(f->client,
-                                                connected_subchannel);
-  gpr_log(GPR_INFO, "CHANNEL WRAPPING SUBCHANNEL: %p(%p)", f->client,
-          ffd->sniffed_subchannel);
-
-  GPR_ASSERT(f->client);
-}
-
-static void chttp2_init_server_micro_fullstack(grpc_end2end_test_fixture *f,
-                                               grpc_channel_args *server_args) {
-  micro_fullstack_fixture_data *ffd = f->fixture_data;
-  if (f->server) {
-    grpc_server_destroy(f->server);
-  }
-  f->server = grpc_server_create(server_args, NULL);
-  grpc_server_register_completion_queue(f->server, f->cq, NULL);
-  GPR_ASSERT(grpc_server_add_insecure_http2_port(f->server, ffd->localaddr));
-  grpc_server_start(f->server);
-}
-
-static void chttp2_tear_down_micro_fullstack(grpc_end2end_test_fixture *f) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  micro_fullstack_fixture_data *ffd = f->fixture_data;
-  grpc_channel_destroy(ffd->master_channel);
-  if (ffd->sniffed_subchannel) {
-    GRPC_SUBCHANNEL_UNREF(&exec_ctx, ffd->sniffed_subchannel, "sniffed");
-  }
-  gpr_free(ffd->localaddr);
-  gpr_free(ffd);
-  grpc_exec_ctx_finish(&exec_ctx);
-}
-
-/* All test configurations */
-static grpc_end2end_test_config configs[] = {
-    {"chttp2/micro_fullstack", 0, chttp2_create_fixture_micro_fullstack,
-     chttp2_init_client_micro_fullstack, chttp2_init_server_micro_fullstack,
-     chttp2_tear_down_micro_fullstack},
-};
-
-int main(int argc, char **argv) {
-  size_t i;
-
-  grpc_test_init(argc, argv);
-  grpc_init();
-
-  for (i = 0; i < sizeof(configs) / sizeof(*configs); i++) {
-    grpc_end2end_tests(argc, argv, configs[i]);
-  }
-
-  grpc_shutdown();
-
-  return 0;
-}
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index fa32601..93b48c3 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -72,7 +72,6 @@
     'h2_ssl+poll': default_secure_fixture_options._replace(platforms=['linux']),
     'h2_ssl_proxy': default_secure_fixture_options._replace(includes_proxy=True,
                                                             ci_mac=False),
-    'h2_uchannel': default_unsecure_fixture_options._replace(fullstack=False),
     'h2_uds+poll': uds_fixture_options._replace(platforms=['linux']),
     'h2_uds': uds_fixture_options,
 }
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 4fcfba3..694fd28 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -779,7 +779,6 @@
 src/core/channel/channel_stack.h \
 src/core/channel/channel_stack_builder.h \
 src/core/channel/client_channel.h \
-src/core/channel/client_uchannel.h \
 src/core/channel/compress_filter.h \
 src/core/channel/connected_channel.h \
 src/core/channel/context.h \
@@ -921,7 +920,6 @@
 src/core/channel/channel_stack.c \
 src/core/channel/channel_stack_builder.c \
 src/core/channel/client_channel.c \
-src/core/channel/client_uchannel.c \
 src/core/channel/compress_filter.c \
 src/core/channel/connected_channel.c \
 src/core/channel/http_client_filter.c \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 28647e4..3b787d6 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -3482,23 +3482,6 @@
     ], 
     "headers": [], 
     "language": "c", 
-    "name": "h2_uchannel_test", 
-    "src": [
-      "test/core/end2end/fixtures/h2_uchannel.c"
-    ], 
-    "third_party": false, 
-    "type": "target"
-  }, 
-  {
-    "deps": [
-      "end2end_tests", 
-      "gpr", 
-      "gpr_test_util", 
-      "grpc", 
-      "grpc_test_util"
-    ], 
-    "headers": [], 
-    "language": "c", 
     "name": "h2_uds_test", 
     "src": [
       "test/core/end2end/fixtures/h2_uds.c"
@@ -3720,23 +3703,6 @@
     ], 
     "headers": [], 
     "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "src": [
-      "test/core/end2end/fixtures/h2_uchannel.c"
-    ], 
-    "third_party": false, 
-    "type": "target"
-  }, 
-  {
-    "deps": [
-      "end2end_nosec_tests", 
-      "gpr", 
-      "gpr_test_util", 
-      "grpc_test_util_unsecure", 
-      "grpc_unsecure"
-    ], 
-    "headers": [], 
-    "language": "c", 
     "name": "h2_uds_nosec_test", 
     "src": [
       "test/core/end2end/fixtures/h2_uds.c"
@@ -3967,7 +3933,6 @@
       "src/core/channel/channel_stack.h", 
       "src/core/channel/channel_stack_builder.h", 
       "src/core/channel/client_channel.h", 
-      "src/core/channel/client_uchannel.h", 
       "src/core/channel/compress_filter.h", 
       "src/core/channel/connected_channel.h", 
       "src/core/channel/context.h", 
@@ -4138,8 +4103,6 @@
       "src/core/channel/channel_stack_builder.h", 
       "src/core/channel/client_channel.c", 
       "src/core/channel/client_channel.h", 
-      "src/core/channel/client_uchannel.c", 
-      "src/core/channel/client_uchannel.h", 
       "src/core/channel/compress_filter.c", 
       "src/core/channel/compress_filter.h", 
       "src/core/channel/connected_channel.c", 
@@ -4594,7 +4557,6 @@
       "src/core/channel/channel_stack.h", 
       "src/core/channel/channel_stack_builder.h", 
       "src/core/channel/client_channel.h", 
-      "src/core/channel/client_uchannel.h", 
       "src/core/channel/compress_filter.h", 
       "src/core/channel/connected_channel.h", 
       "src/core/channel/context.h", 
@@ -4750,8 +4712,6 @@
       "src/core/channel/channel_stack_builder.h", 
       "src/core/channel/client_channel.c", 
       "src/core/channel/client_channel.h", 
-      "src/core/channel/client_uchannel.c", 
-      "src/core/channel/client_uchannel.h", 
       "src/core/channel/compress_filter.c", 
       "src/core/channel/compress_filter.h", 
       "src/core/channel/connected_channel.c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index bd652f2..34006b1 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -1335,7 +1335,7 @@
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "flaky": false, 
+    "flaky": true, 
     "gtest": false, 
     "language": "c", 
     "name": "mlog_test", 
@@ -15226,688 +15226,6 @@
       "bad_hostname"
     ], 
     "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "binary_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "call_creds"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_accept"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_client_done"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_invoke"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_before_invoke"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_in_a_vacuum"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_with_status"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "compressed_payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "empty_batch"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "graceful_server_shutdown"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "high_initial_seqno"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "hpack_size"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "invoke_large_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "large_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "max_concurrent_streams"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "max_message_length"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "negative_deadline"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "no_op"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "ping_pong_streaming"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "registered_call"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "request_with_flags"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "request_with_payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "server_finishes_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "shutdown_finishes_calls"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "shutdown_finishes_tags"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "simple_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "simple_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "trailing_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "bad_hostname"
-    ], 
-    "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
@@ -24384,666 +23702,6 @@
       "bad_hostname"
     ], 
     "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "binary_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_accept"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_client_done"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_after_invoke"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_before_invoke"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_in_a_vacuum"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "cancel_with_status"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "compressed_payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "empty_batch"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "graceful_server_shutdown"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "high_initial_seqno"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "hpack_size"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "invoke_large_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "large_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "max_concurrent_streams"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "max_message_length"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "negative_deadline"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "no_op"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 0.1, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "ping_pong_streaming"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "registered_call"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "request_with_flags"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "request_with_payload"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "server_finishes_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "shutdown_finishes_calls"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "shutdown_finishes_tags"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "simple_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "simple_request"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "trailing_metadata"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_uchannel_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "bad_hostname"
-    ], 
-    "ci_platforms": [
       "linux", 
       "mac", 
       "posix"
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index 8c64423..86f42ee 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -1241,18 +1241,6 @@
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_uchannel_test", "vcxproj\test/end2end/fixtures\h2_uchannel_test\h2_uchannel_test.vcxproj", "{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
-		{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_census_nosec_test", "vcxproj\test/end2end/fixtures\h2_census_nosec_test\h2_census_nosec_test.vcxproj", "{A8039D43-910E-4248-2A22-74366E8C4DCD}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -1349,18 +1337,6 @@
 		{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"
-	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
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -3245,22 +3221,6 @@
 		{A9092608-E45E-AC96-6533-A6E7DD98211D}.Release-DLL|Win32.Build.0 = Release|Win32
 		{A9092608-E45E-AC96-6533-A6E7DD98211D}.Release-DLL|x64.ActiveCfg = Release|x64
 		{A9092608-E45E-AC96-6533-A6E7DD98211D}.Release-DLL|x64.Build.0 = Release|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug|Win32.ActiveCfg = Debug|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug|x64.ActiveCfg = Debug|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release|Win32.ActiveCfg = Release|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release|x64.ActiveCfg = Release|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug|Win32.Build.0 = Debug|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug|x64.Build.0 = Debug|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release|Win32.Build.0 = Release|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release|x64.Build.0 = Release|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Debug-DLL|x64.Build.0 = Debug|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release-DLL|Win32.Build.0 = Release|Win32
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release-DLL|x64.ActiveCfg = Release|x64
-		{E39D59C4-F5CB-7D68-DA6B-C6BC93843435}.Release-DLL|x64.Build.0 = Release|x64
 		{A8039D43-910E-4248-2A22-74366E8C4DCD}.Debug|Win32.ActiveCfg = Debug|Win32
 		{A8039D43-910E-4248-2A22-74366E8C4DCD}.Debug|x64.ActiveCfg = Debug|x64
 		{A8039D43-910E-4248-2A22-74366E8C4DCD}.Release|Win32.ActiveCfg = Release|Win32
@@ -3389,22 +3349,6 @@
 		{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
-		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Release|x64.ActiveCfg = Release|x64
-		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Debug|Win32.Build.0 = Debug|Win32
-		{BD79A629-4181-DB5E-C28F-44EB280A6F91}.Debug|x64.Build.0 = Debug|x64
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diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 869acb4..30726ff 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -288,7 +288,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\channel\connected_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\channel\context.h" />
@@ -439,8 +438,6 @@
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     <ClCompile Include="$(SolutionDir)\..\src\core\channel\compress_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\channel\connected_channel.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index 44cf627..26ef8aa 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -22,9 +22,6 @@
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       <Filter>src\core\channel</Filter>
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-      <Filter>src\core\channel</Filter>
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     <ClCompile Include="$(SolutionDir)\..\src\core\channel\compress_filter.c">
       <Filter>src\core\channel</Filter>
     </ClCompile>
@@ -551,9 +548,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\channel\compress_filter.h">
       <Filter>src\core\channel</Filter>
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diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 83a48c3..1939396 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -278,7 +278,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\channel\client_channel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\channel\client_uchannel.h" />
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     <ClInclude Include="$(SolutionDir)\..\src\core\channel\connected_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\channel\context.h" />
@@ -417,8 +416,6 @@
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     <ClCompile Include="$(SolutionDir)\..\src\core\channel\compress_filter.c">
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     <ClCompile Include="$(SolutionDir)\..\src\core\channel\connected_channel.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index 7c14e8c..6075961 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -25,9 +25,6 @@
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     <ClCompile Include="$(SolutionDir)\..\src\core\channel\compress_filter.c">
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@@ -488,9 +485,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\channel\compress_filter.h">
       <Filter>src\core\channel</Filter>
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diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_uchannel_nosec_test/h2_uchannel_nosec_test.vcxproj b/vsprojects/vcxproj/test/end2end/fixtures/h2_uchannel_nosec_test/h2_uchannel_nosec_test.vcxproj
deleted file mode 100644
index 76a9e56..0000000
--- a/vsprojects/vcxproj/test/end2end/fixtures/h2_uchannel_nosec_test/h2_uchannel_nosec_test.vcxproj
+++ /dev/null
@@ -1,202 +0,0 @@
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diff --git a/vsprojects/vcxproj/test/end2end/fixtures/h2_uchannel_nosec_test/h2_uchannel_nosec_test.vcxproj.filters b/vsprojects/vcxproj/test/end2end/fixtures/h2_uchannel_nosec_test/h2_uchannel_nosec_test.vcxproj.filters
deleted file mode 100644
index c9adeee..0000000
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