Merge branch 'client_crash' of github.com:ctiller/grpc into merge-write

15 files changed, 2469 insertions, 202 deletions

diff --git a/tools/buildgen/plugins/expand_version.py b/tools/buildgen/plugins/expand_version.py
index c6cc5621c9..6098cca59c 100755
--- a/tools/buildgen/plugins/expand_version.py
+++ b/tools/buildgen/plugins/expand_version.py
@@ -85,10 +85,21 @@ class Version:
       return '%d.%d.%d' % (self.major, self.minor, self.patch)
 
   def php(self):
-    """Version string in PHP style"""
-    """PECL does not allow tag in version string"""
-    return '%d.%d.%d' % (self.major, self.minor, self.patch)
+    """Version string for PHP PECL package"""
+    s = '%d.%d.%d' % (self.major, self.minor, self.patch)
+    if self.tag:
+      if self.tag == 'dev':
+        s += 'dev'
+      elif len(self.tag) >= 3 and self.tag[0:3] == 'pre':
+        s += 'RC%d' % int(self.tag[3:])
+      else:
+        raise Exception('Don\'t know how to translate version tag "%s" to PECL version' % self.tag)
+    return s
 
+  def php_composer(self):
+    """Version string for PHP Composer package"""
+    return '%d.%d.%d' % (self.major, self.minor, self.patch)
+    
 def mako_plugin(dictionary):
   """Expand version numbers:
      - for each language, ensure there's a language_version tag in
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index e8105992dc..a07a586fb2 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -27,6 +27,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+from distutils import cygwinccompiler
 from distutils import extension
 from distutils import util
 import errno
@@ -68,26 +69,35 @@ BUILD_WITH_CYTHON = os.environ.get('GRPC_PYTHON_BUILD_WITH_CYTHON', False)
 EXTRA_ENV_COMPILE_ARGS = os.environ.get('GRPC_PYTHON_CFLAGS', None)
 EXTRA_ENV_LINK_ARGS = os.environ.get('GRPC_PYTHON_LDFLAGS', None)
 if EXTRA_ENV_COMPILE_ARGS is None:
-  EXTRA_ENV_COMPILE_ARGS = '-fno-wrapv -frtti -std=c++11'
+  EXTRA_ENV_COMPILE_ARGS = '-std=c++11'
   if 'win32' in sys.platform:
-    # We use define flags here and don't directly add to DEFINE_MACROS below to
-    # ensure that the expert user/builder has a way of turning it off (via the
-    # envvars) without adding yet more GRPC-specific envvars.
-    # See https://sourceforge.net/p/mingw-w64/bugs/363/
-    if '32' in platform.architecture()[0]:
-      EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime32 -D_timeb=__timeb32 -D_ftime_s=_ftime32_s'
+    if sys.version_info < (3, 5):
+      # We use define flags here and don't directly add to DEFINE_MACROS below to
+      # ensure that the expert user/builder has a way of turning it off (via the
+      # envvars) without adding yet more GRPC-specific envvars.
+      # See https://sourceforge.net/p/mingw-w64/bugs/363/
+      if '32' in platform.architecture()[0]:
+        EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime32 -D_timeb=__timeb32 -D_ftime_s=_ftime32_s'
+      else:
+        EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime64 -D_timeb=__timeb64'
     else:
-      EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime64 -D_timeb=__timeb64'
+      # We need to statically link the C++ Runtime, only the C runtime is
+      # available dynamically
+      EXTRA_ENV_COMPILE_ARGS += ' /MT'
+  elif "linux" in sys.platform or "darwin" in sys.platform:
+    EXTRA_ENV_COMPILE_ARGS += ' -fno-wrapv -frtti'
 if EXTRA_ENV_LINK_ARGS is None:
-  EXTRA_ENV_LINK_ARGS = '-lpthread'
-  if 'win32' in sys.platform:
-    # TODO(atash) check if this is actually safe to just import and call on
-    # non-Windows (to avoid breaking import style)
-    from distutils.cygwinccompiler import get_msvcr
-    msvcr = get_msvcr()[0]
+  EXTRA_ENV_LINK_ARGS = ''
+  if "linux" in sys.platform or "darwin" in sys.platform:
+    EXTRA_ENV_LINK_ARGS += ' -lpthread'
+  elif "win32" in sys.platform and sys.version_info < (3, 5):
+    msvcr = cygwinccompiler.get_msvcr()[0]
+    # TODO(atash) sift through the GCC specs to see if libstdc++ can have any
+    # influence on the linkage outcome on MinGW for non-C++ programs.
     EXTRA_ENV_LINK_ARGS += (
         ' -static-libgcc -static-libstdc++ -mcrtdll={msvcr} '
         '-static'.format(msvcr=msvcr))
+
 EXTRA_COMPILE_ARGS = shlex.split(EXTRA_ENV_COMPILE_ARGS)
 EXTRA_LINK_ARGS = shlex.split(EXTRA_ENV_LINK_ARGS)
 
@@ -101,9 +111,13 @@ PROTO_INCLUDE = os.path.normpath(protoc_lib_deps.PROTO_INCLUDE)
 GRPC_PYTHON_TOOLS_PACKAGE = 'grpc.tools'
 GRPC_PYTHON_PROTO_RESOURCES_NAME = '_proto'
 
-DEFINE_MACROS = (('HAVE_PTHREAD', 1),)
-if "win32" in sys.platform and '64bit' in platform.architecture()[0]:
-  DEFINE_MACROS += (('MS_WIN64', 1),)
+DEFINE_MACROS = ()
+if "win32" in sys.platform:
+  DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1),)
+  if '64bit' in platform.architecture()[0]:
+    DEFINE_MACROS += (('MS_WIN64', 1),)
+elif "linux" in sys.platform or "darwin" in sys.platform:
+  DEFINE_MACROS += (('HAVE_PTHREAD', 1),)
 
 # By default, Python3 distutils enforces compatibility of
 # c plugins (.so files) with the OSX version Python3 was built with.
@@ -178,7 +192,7 @@ setuptools.setup(
   namespace_packages=['grpc'],
   install_requires=[
     'protobuf>=3.0.0',
-    'grpcio>=0.15.0',
+    'grpcio>={version}'.format(version=grpc_version.VERSION),
   ],
   package_data=package_data(),
 )
diff --git a/tools/distrib/python/make_grpcio_tools.py b/tools/distrib/python/make_grpcio_tools.py
index adf58445af..7413928eca 100755
--- a/tools/distrib/python/make_grpcio_tools.py
+++ b/tools/distrib/python/make_grpcio_tools.py
@@ -88,22 +88,23 @@ GRPC_ROOT = os.path.abspath(
     os.path.join(os.path.dirname(os.path.abspath(__file__)),
                  '..', '..', '..'))
 
-GRPC_PYTHON_ROOT = os.path.join(GRPC_ROOT, 'tools/distrib/python/grpcio_tools')
+GRPC_PYTHON_ROOT = os.path.join(GRPC_ROOT, 'tools', 'distrib',
+                                'python', 'grpcio_tools')
 
-GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT = 'third_party/protobuf/src'
+GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT = os.path.join('third_party', 'protobuf', 'src')
 GRPC_PROTOBUF = os.path.join(GRPC_ROOT, GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT)
-GRPC_PROTOC_PLUGINS = os.path.join(GRPC_ROOT, 'src/compiler')
-GRPC_PYTHON_PROTOBUF = os.path.join(GRPC_PYTHON_ROOT,
-                                    'third_party/protobuf/src')
-GRPC_PYTHON_PROTOC_PLUGINS = os.path.join(GRPC_PYTHON_ROOT,
-                                          'grpc_root/src/compiler')
+GRPC_PROTOC_PLUGINS = os.path.join(GRPC_ROOT, 'src', 'compiler')
+GRPC_PYTHON_PROTOBUF = os.path.join(GRPC_PYTHON_ROOT, 'third_party', 'protobuf',
+                                    'src')
+GRPC_PYTHON_PROTOC_PLUGINS = os.path.join(GRPC_PYTHON_ROOT, 'grpc_root', 'src',
+                                          'compiler')
 GRPC_PYTHON_PROTOC_LIB_DEPS = os.path.join(GRPC_PYTHON_ROOT,
                                            'protoc_lib_deps.py')
 
 GRPC_INCLUDE = os.path.join(GRPC_ROOT, 'include')
-GRPC_PYTHON_INCLUDE = os.path.join(GRPC_PYTHON_ROOT, 'grpc_root/include')
+GRPC_PYTHON_INCLUDE = os.path.join(GRPC_PYTHON_ROOT, 'grpc_root', 'include')
 
-BAZEL_DEPS = os.path.join(GRPC_ROOT, 'tools/distrib/python/bazel_deps.sh')
+BAZEL_DEPS = os.path.join(GRPC_ROOT, 'tools', 'distrib', 'python', 'bazel_deps.sh')
 BAZEL_DEPS_PROTOC_LIB_QUERY = '//:protoc_lib'
 BAZEL_DEPS_COMMON_PROTOS_QUERY = '//:well_known_protos'
 
@@ -136,64 +137,6 @@ def long_path(path):
   else:
     return path
 
-def atomic_file_copy(src, dst):
-  """Based on the lock-free-whack-a-mole algorithm, depending on filesystem
-     renaming being atomic. Described at http://stackoverflow.com/a/28090883.
-  """
-  try:
-    if filecmp.cmp(src, dst):
-      return
-  except:
-    pass
-  dst_dir = os.path.abspath(os.path.dirname(dst))
-  dst_base = os.path.basename(dst)
-  this_id = str(uuid.uuid4()).replace('.', '-')
-  temporary_file = os.path.join(dst_dir, '{}.{}.tmp'.format(dst_base, this_id))
-  mole_file = os.path.join(dst_dir, '{}.{}.mole.tmp'.format(dst_base, this_id))
-  mole_pattern = os.path.join(dst_dir, '{}.*.mole.tmp'.format(dst_base))
-  src = long_path(src)
-  dst = long_path(dst)
-  temporary_file = long_path(temporary_file)
-  mole_file = long_path(mole_file)
-  mole_pattern = long_path(mole_pattern)
-  shutil.copy2(src, temporary_file)
-  try:
-    os.rename(temporary_file, mole_file)
-  except:
-    print('Error moving temporary file {} to {}'.format(temporary_file, mole_file), file=sys.stderr)
-    print('while trying to copy file {} to {}'.format(src, dst), file=sys.stderr)
-    raise
-  for other_file in glob.glob(mole_pattern):
-    other_id = other_file.split('.')[-3]
-    if this_id == other_id:
-      pass
-    elif this_id < other_id:
-      try:
-        os.remove(other_file)
-      except:
-        pass
-    else:
-      try:
-        os.remove(mole_file)
-      except:
-        pass
-      this_id = other_id
-      mole_file = other_file
-  try:
-    if filecmp.cmp(src, dst):
-      try:
-        os.remove(mole_file)
-      except:
-        pass
-      return
-  except:
-    pass
-  try:
-    os.rename(mole_file, dst)
-  except:
-    pass
-
-
 def main():
   os.chdir(GRPC_ROOT)
 
@@ -211,7 +154,7 @@ def main():
       for relative_file in files:
         source_file = os.path.abspath(os.path.join(source_dir, relative_file))
         target_file = os.path.abspath(os.path.join(target_dir, relative_file))
-        atomic_file_copy(source_file, target_file)
+        shutil.copyfile(source_file, target_file)
 
   try:
     protoc_lib_deps_content = get_deps()
diff --git a/tools/dockerfile/test/python_pyenv_x64/Dockerfile b/tools/dockerfile/test/python_pyenv_x64/Dockerfile
index abb5f3c89b..ecd785a86d 100644
--- a/tools/dockerfile/test/python_pyenv_x64/Dockerfile
+++ b/tools/dockerfile/test/python_pyenv_x64/Dockerfile
@@ -95,7 +95,8 @@ RUN curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/py
 RUN pyenv update
 RUN pyenv install 3.5-dev
 RUN pyenv install 3.6-dev
-RUN pyenv local 3.5-dev 3.6-dev
+RUN pyenv install pypy-5.3.1
+RUN pyenv local 3.5-dev 3.6-dev pypy-5.3.1
 
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index a2415e1217..314a42d989 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -807,6 +807,34 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
+include/grpc/byte_buffer.h \
+include/grpc/byte_buffer_reader.h \
+include/grpc/compression.h \
+include/grpc/grpc.h \
+include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
+include/grpc/status.h \
+include/grpc/impl/codegen/byte_buffer.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/grpc_types.h \
+include/grpc/impl/codegen/propagation_bits.h \
+include/grpc/impl/codegen/status.h \
+include/grpc/impl/codegen/alloc.h \
+include/grpc/impl/codegen/atm.h \
+include/grpc/impl/codegen/atm_gcc_atomic.h \
+include/grpc/impl/codegen/atm_gcc_sync.h \
+include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/log.h \
+include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/slice_buffer.h \
+include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_generic.h \
+include/grpc/impl/codegen/sync_posix.h \
+include/grpc/impl/codegen/sync_windows.h \
+include/grpc/impl/codegen/time.h \
 include/grpc++/impl/codegen/async_stream.h \
 include/grpc++/impl/codegen/async_unary_call.h \
 include/grpc++/impl/codegen/call.h \
@@ -836,28 +864,7 @@ include/grpc++/impl/codegen/sync.h \
 include/grpc++/impl/codegen/sync_cxx11.h \
 include/grpc++/impl/codegen/sync_no_cxx11.h \
 include/grpc++/impl/codegen/sync_stream.h \
-include/grpc++/impl/codegen/time.h \
-include/grpc/impl/codegen/byte_buffer.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
-include/grpc/impl/codegen/alloc.h \
-include/grpc/impl/codegen/atm.h \
-include/grpc/impl/codegen/atm_gcc_atomic.h \
-include/grpc/impl/codegen/atm_gcc_sync.h \
-include/grpc/impl/codegen/atm_windows.h \
-include/grpc/impl/codegen/log.h \
-include/grpc/impl/codegen/port_platform.h \
-include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/slice_buffer.h \
-include/grpc/impl/codegen/sync.h \
-include/grpc/impl/codegen/sync_generic.h \
-include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_windows.h \
-include/grpc/impl/codegen/time.h
+include/grpc++/impl/codegen/time.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 95c0e853c2..12eb651384 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -807,6 +807,34 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
+include/grpc/byte_buffer.h \
+include/grpc/byte_buffer_reader.h \
+include/grpc/compression.h \
+include/grpc/grpc.h \
+include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
+include/grpc/status.h \
+include/grpc/impl/codegen/byte_buffer.h \
+include/grpc/impl/codegen/byte_buffer_reader.h \
+include/grpc/impl/codegen/compression_types.h \
+include/grpc/impl/codegen/connectivity_state.h \
+include/grpc/impl/codegen/grpc_types.h \
+include/grpc/impl/codegen/propagation_bits.h \
+include/grpc/impl/codegen/status.h \
+include/grpc/impl/codegen/alloc.h \
+include/grpc/impl/codegen/atm.h \
+include/grpc/impl/codegen/atm_gcc_atomic.h \
+include/grpc/impl/codegen/atm_gcc_sync.h \
+include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/log.h \
+include/grpc/impl/codegen/port_platform.h \
+include/grpc/impl/codegen/slice.h \
+include/grpc/impl/codegen/slice_buffer.h \
+include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_generic.h \
+include/grpc/impl/codegen/sync_posix.h \
+include/grpc/impl/codegen/sync_windows.h \
+include/grpc/impl/codegen/time.h \
 include/grpc++/impl/codegen/async_stream.h \
 include/grpc++/impl/codegen/async_unary_call.h \
 include/grpc++/impl/codegen/call.h \
@@ -837,27 +865,6 @@ include/grpc++/impl/codegen/sync_cxx11.h \
 include/grpc++/impl/codegen/sync_no_cxx11.h \
 include/grpc++/impl/codegen/sync_stream.h \
 include/grpc++/impl/codegen/time.h \
-include/grpc/impl/codegen/byte_buffer.h \
-include/grpc/impl/codegen/byte_buffer_reader.h \
-include/grpc/impl/codegen/compression_types.h \
-include/grpc/impl/codegen/connectivity_state.h \
-include/grpc/impl/codegen/grpc_types.h \
-include/grpc/impl/codegen/propagation_bits.h \
-include/grpc/impl/codegen/status.h \
-include/grpc/impl/codegen/alloc.h \
-include/grpc/impl/codegen/atm.h \
-include/grpc/impl/codegen/atm_gcc_atomic.h \
-include/grpc/impl/codegen/atm_gcc_sync.h \
-include/grpc/impl/codegen/atm_windows.h \
-include/grpc/impl/codegen/log.h \
-include/grpc/impl/codegen/port_platform.h \
-include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/slice_buffer.h \
-include/grpc/impl/codegen/sync.h \
-include/grpc/impl/codegen/sync_generic.h \
-include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_windows.h \
-include/grpc/impl/codegen/time.h \
 include/grpc++/impl/codegen/core_codegen.h \
 src/cpp/client/secure_credentials.h \
 src/cpp/common/secure_auth_context.h \
@@ -866,6 +873,86 @@ src/cpp/client/create_channel_internal.h \
 src/cpp/common/channel_filter.h \
 src/cpp/server/dynamic_thread_pool.h \
 src/cpp/server/thread_pool_interface.h \
+src/core/lib/channel/channel_args.h \
+src/core/lib/channel/channel_stack.h \
+src/core/lib/channel/channel_stack_builder.h \
+src/core/lib/channel/compress_filter.h \
+src/core/lib/channel/connected_channel.h \
+src/core/lib/channel/context.h \
+src/core/lib/channel/handshaker.h \
+src/core/lib/channel/http_client_filter.h \
+src/core/lib/channel/http_server_filter.h \
+src/core/lib/compression/algorithm_metadata.h \
+src/core/lib/compression/message_compress.h \
+src/core/lib/debug/trace.h \
+src/core/lib/http/format_request.h \
+src/core/lib/http/httpcli.h \
+src/core/lib/http/parser.h \
+src/core/lib/iomgr/closure.h \
+src/core/lib/iomgr/endpoint.h \
+src/core/lib/iomgr/endpoint_pair.h \
+src/core/lib/iomgr/error.h \
+src/core/lib/iomgr/ev_epoll_linux.h \
+src/core/lib/iomgr/ev_poll_and_epoll_posix.h \
+src/core/lib/iomgr/ev_poll_posix.h \
+src/core/lib/iomgr/ev_posix.h \
+src/core/lib/iomgr/exec_ctx.h \
+src/core/lib/iomgr/executor.h \
+src/core/lib/iomgr/iocp_windows.h \
+src/core/lib/iomgr/iomgr.h \
+src/core/lib/iomgr/iomgr_internal.h \
+src/core/lib/iomgr/iomgr_posix.h \
+src/core/lib/iomgr/load_file.h \
+src/core/lib/iomgr/network_status_tracker.h \
+src/core/lib/iomgr/polling_entity.h \
+src/core/lib/iomgr/pollset.h \
+src/core/lib/iomgr/pollset_set.h \
+src/core/lib/iomgr/pollset_set_windows.h \
+src/core/lib/iomgr/pollset_windows.h \
+src/core/lib/iomgr/resolve_address.h \
+src/core/lib/iomgr/sockaddr.h \
+src/core/lib/iomgr/sockaddr_posix.h \
+src/core/lib/iomgr/sockaddr_utils.h \
+src/core/lib/iomgr/sockaddr_windows.h \
+src/core/lib/iomgr/socket_utils_posix.h \
+src/core/lib/iomgr/socket_windows.h \
+src/core/lib/iomgr/tcp_client.h \
+src/core/lib/iomgr/tcp_posix.h \
+src/core/lib/iomgr/tcp_server.h \
+src/core/lib/iomgr/tcp_windows.h \
+src/core/lib/iomgr/time_averaged_stats.h \
+src/core/lib/iomgr/timer.h \
+src/core/lib/iomgr/timer_heap.h \
+src/core/lib/iomgr/udp_server.h \
+src/core/lib/iomgr/unix_sockets_posix.h \
+src/core/lib/iomgr/wakeup_fd_pipe.h \
+src/core/lib/iomgr/wakeup_fd_posix.h \
+src/core/lib/iomgr/workqueue.h \
+src/core/lib/iomgr/workqueue_posix.h \
+src/core/lib/iomgr/workqueue_windows.h \
+src/core/lib/json/json.h \
+src/core/lib/json/json_common.h \
+src/core/lib/json/json_reader.h \
+src/core/lib/json/json_writer.h \
+src/core/lib/surface/api_trace.h \
+src/core/lib/surface/call.h \
+src/core/lib/surface/call_test_only.h \
+src/core/lib/surface/channel.h \
+src/core/lib/surface/channel_init.h \
+src/core/lib/surface/channel_stack_type.h \
+src/core/lib/surface/completion_queue.h \
+src/core/lib/surface/event_string.h \
+src/core/lib/surface/init.h \
+src/core/lib/surface/lame_client.h \
+src/core/lib/surface/server.h \
+src/core/lib/transport/byte_stream.h \
+src/core/lib/transport/connectivity_state.h \
+src/core/lib/transport/metadata.h \
+src/core/lib/transport/metadata_batch.h \
+src/core/lib/transport/static_metadata.h \
+src/core/lib/transport/timeout_encoding.h \
+src/core/lib/transport/transport.h \
+src/core/lib/transport/transport_impl.h \
 src/cpp/client/secure_credentials.cc \
 src/cpp/common/auth_property_iterator.cc \
 src/cpp/common/secure_auth_context.cc \
@@ -899,6 +986,95 @@ src/cpp/util/slice.cc \
 src/cpp/util/status.cc \
 src/cpp/util/string_ref.cc \
 src/cpp/util/time.cc \
+src/core/lib/channel/channel_args.c \
+src/core/lib/channel/channel_stack.c \
+src/core/lib/channel/channel_stack_builder.c \
+src/core/lib/channel/compress_filter.c \
+src/core/lib/channel/connected_channel.c \
+src/core/lib/channel/handshaker.c \
+src/core/lib/channel/http_client_filter.c \
+src/core/lib/channel/http_server_filter.c \
+src/core/lib/compression/compression.c \
+src/core/lib/compression/message_compress.c \
+src/core/lib/debug/trace.c \
+src/core/lib/http/format_request.c \
+src/core/lib/http/httpcli.c \
+src/core/lib/http/parser.c \
+src/core/lib/iomgr/closure.c \
+src/core/lib/iomgr/endpoint.c \
+src/core/lib/iomgr/endpoint_pair_posix.c \
+src/core/lib/iomgr/endpoint_pair_windows.c \
+src/core/lib/iomgr/error.c \
+src/core/lib/iomgr/ev_epoll_linux.c \
+src/core/lib/iomgr/ev_poll_and_epoll_posix.c \
+src/core/lib/iomgr/ev_poll_posix.c \
+src/core/lib/iomgr/ev_posix.c \
+src/core/lib/iomgr/exec_ctx.c \
+src/core/lib/iomgr/executor.c \
+src/core/lib/iomgr/iocp_windows.c \
+src/core/lib/iomgr/iomgr.c \
+src/core/lib/iomgr/iomgr_posix.c \
+src/core/lib/iomgr/iomgr_windows.c \
+src/core/lib/iomgr/load_file.c \
+src/core/lib/iomgr/network_status_tracker.c \
+src/core/lib/iomgr/polling_entity.c \
+src/core/lib/iomgr/pollset_set_windows.c \
+src/core/lib/iomgr/pollset_windows.c \
+src/core/lib/iomgr/resolve_address_posix.c \
+src/core/lib/iomgr/resolve_address_windows.c \
+src/core/lib/iomgr/sockaddr_utils.c \
+src/core/lib/iomgr/socket_utils_common_posix.c \
+src/core/lib/iomgr/socket_utils_linux.c \
+src/core/lib/iomgr/socket_utils_posix.c \
+src/core/lib/iomgr/socket_windows.c \
+src/core/lib/iomgr/tcp_client_posix.c \
+src/core/lib/iomgr/tcp_client_windows.c \
+src/core/lib/iomgr/tcp_posix.c \
+src/core/lib/iomgr/tcp_server_posix.c \
+src/core/lib/iomgr/tcp_server_windows.c \
+src/core/lib/iomgr/tcp_windows.c \
+src/core/lib/iomgr/time_averaged_stats.c \
+src/core/lib/iomgr/timer.c \
+src/core/lib/iomgr/timer_heap.c \
+src/core/lib/iomgr/udp_server.c \
+src/core/lib/iomgr/unix_sockets_posix.c \
+src/core/lib/iomgr/unix_sockets_posix_noop.c \
+src/core/lib/iomgr/wakeup_fd_eventfd.c \
+src/core/lib/iomgr/wakeup_fd_nospecial.c \
+src/core/lib/iomgr/wakeup_fd_pipe.c \
+src/core/lib/iomgr/wakeup_fd_posix.c \
+src/core/lib/iomgr/workqueue_posix.c \
+src/core/lib/iomgr/workqueue_windows.c \
+src/core/lib/json/json.c \
+src/core/lib/json/json_reader.c \
+src/core/lib/json/json_string.c \
+src/core/lib/json/json_writer.c \
+src/core/lib/surface/alarm.c \
+src/core/lib/surface/api_trace.c \
+src/core/lib/surface/byte_buffer.c \
+src/core/lib/surface/byte_buffer_reader.c \
+src/core/lib/surface/call.c \
+src/core/lib/surface/call_details.c \
+src/core/lib/surface/call_log_batch.c \
+src/core/lib/surface/channel.c \
+src/core/lib/surface/channel_init.c \
+src/core/lib/surface/channel_ping.c \
+src/core/lib/surface/channel_stack_type.c \
+src/core/lib/surface/completion_queue.c \
+src/core/lib/surface/event_string.c \
+src/core/lib/surface/lame_client.c \
+src/core/lib/surface/metadata_array.c \
+src/core/lib/surface/server.c \
+src/core/lib/surface/validate_metadata.c \
+src/core/lib/surface/version.c \
+src/core/lib/transport/byte_stream.c \
+src/core/lib/transport/connectivity_state.c \
+src/core/lib/transport/metadata.c \
+src/core/lib/transport/metadata_batch.c \
+src/core/lib/transport/static_metadata.c \
+src/core/lib/transport/timeout_encoding.c \
+src/core/lib/transport/transport.c \
+src/core/lib/transport/transport_op_string.c \
 src/cpp/codegen/codegen_init.cc
 
 # This tag can be used to specify the character encoding of the source files
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index e631c962b3..27f878e8ab 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -765,6 +765,7 @@ include/grpc/byte_buffer_reader.h \
 include/grpc/compression.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
 include/grpc/status.h \
 include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
@@ -788,7 +789,6 @@ include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
 include/grpc/impl/codegen/time.h \
 include/grpc/grpc_security.h \
-include/grpc/grpc_security_constants.h \
 include/grpc/census.h \
 include/grpc/support/alloc.h \
 include/grpc/support/atm.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 2638717a7e..1671c32866 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -765,6 +765,7 @@ include/grpc/byte_buffer_reader.h \
 include/grpc/compression.h \
 include/grpc/grpc.h \
 include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
 include/grpc/status.h \
 include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
@@ -788,7 +789,6 @@ include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
 include/grpc/impl/codegen/time.h \
 include/grpc/grpc_security.h \
-include/grpc/grpc_security_constants.h \
 include/grpc/census.h \
 src/core/lib/channel/channel_args.h \
 src/core/lib/channel/channel_stack.h \
@@ -918,7 +918,6 @@ src/core/lib/tsi/transport_security.h \
 src/core/lib/tsi/transport_security_interface.h \
 src/core/ext/client_config/client_channel.h \
 src/core/ext/client_config/client_channel_factory.h \
-src/core/ext/client_config/client_config.h \
 src/core/ext/client_config/connector.h \
 src/core/ext/client_config/initial_connect_string.h \
 src/core/ext/client_config/lb_policy.h \
@@ -928,6 +927,7 @@ src/core/ext/client_config/parse_address.h \
 src/core/ext/client_config/resolver.h \
 src/core/ext/client_config/resolver_factory.h \
 src/core/ext/client_config/resolver_registry.h \
+src/core/ext/client_config/resolver_result.h \
 src/core/ext/client_config/subchannel.h \
 src/core/ext/client_config/subchannel_call_holder.h \
 src/core/ext/client_config/subchannel_index.h \
@@ -1096,7 +1096,6 @@ src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
 src/core/ext/client_config/channel_connectivity.c \
 src/core/ext/client_config/client_channel.c \
 src/core/ext/client_config/client_channel_factory.c \
-src/core/ext/client_config/client_config.c \
 src/core/ext/client_config/client_config_plugin.c \
 src/core/ext/client_config/connector.c \
 src/core/ext/client_config/default_initial_connect_string.c \
@@ -1108,6 +1107,7 @@ src/core/ext/client_config/parse_address.c \
 src/core/ext/client_config/resolver.c \
 src/core/ext/client_config/resolver_factory.c \
 src/core/ext/client_config/resolver_registry.c \
+src/core/ext/client_config/resolver_result.c \
 src/core/ext/client_config/subchannel.c \
 src/core/ext/client_config/subchannel_call_holder.c \
 src/core/ext/client_config/subchannel_index.c \
diff --git a/tools/jenkins/run_interop.sh b/tools/jenkins/run_interop.sh
index a424aea7fc..4a7bff3389 100755
--- a/tools/jenkins/run_interop.sh
+++ b/tools/jenkins/run_interop.sh
@@ -31,6 +31,8 @@
 # This script is invoked by Jenkins and runs interop test suite.
 set -ex
 
+export LANG=en_US.UTF-8
+
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
diff --git a/tools/run_tests/artifact_targets.py b/tools/run_tests/artifact_targets.py
index 8550ee7b84..d36f963a7c 100644
--- a/tools/run_tests/artifact_targets.py
+++ b/tools/run_tests/artifact_targets.py
@@ -31,6 +31,8 @@
 """Definition of targets to build artifacts."""
 
 import os.path
+import random
+import string
 import sys
 
 import jobset
@@ -79,27 +81,16 @@ _ARCH_FLAG_MAP = {
   'x64': '-m64'
 }
 
-python_windows_version_arch_map = {
-  ('x86', '2.7'): 'Python27_32bits',
-  ('x64', '2.7'): 'Python27',
-  ('x86', '3.4'): 'Python34_32bits',
-  ('x64', '3.4'): 'Python34',
-}
 
 class PythonArtifact:
   """Builds Python artifacts."""
 
-  def __init__(self, platform, arch, python_version, manylinux_build=None):
-    if manylinux_build:
-      self.name = 'python%s_%s_%s_%s' % (python_version, platform, arch, manylinux_build)
-    else:
-      self.name = 'python%s_%s_%s' % (python_version, platform, arch)
+  def __init__(self, platform, arch, py_version):
+    self.name = 'python_%s_%s_%s' % (platform, arch, py_version)
     self.platform = platform
     self.arch = arch
-    self.labels = ['artifact', 'python', python_version, platform, arch]
-    self.python_version = python_version
-    self.python_windows_prefix = python_windows_version_arch_map[arch, python_version]
-    self.manylinux_build = manylinux_build
+    self.labels = ['artifact', 'python', platform, arch, py_version]
+    self.py_version = py_version
 
   def pre_build_jobspecs(self):
     return []
@@ -111,8 +102,8 @@ class PythonArtifact:
         environ['SETARCH_CMD'] = 'linux32'
       # Inside the manylinux container, the python installations are located in
       # special places...
-      environ['PYTHON'] = '/opt/python/{}/bin/python'.format(self.manylinux_build)
-      environ['PIP'] = '/opt/python/{}/bin/pip'.format(self.manylinux_build)
+      environ['PYTHON'] = '/opt/python/{}/bin/python'.format(self.py_version)
+      environ['PIP'] = '/opt/python/{}/bin/pip'.format(self.py_version)
       # Platform autodetection for the manylinux1 image breaks so we set the
       # defines ourselves.
       # TODO(atash) get better platform-detection support in core so we don't
@@ -126,14 +117,24 @@ class PythonArtifact:
           environ=environ,
           timeout_seconds=60*60)
     elif self.platform == 'windows':
+      if 'Python27' in self.py_version or 'Python34' in self.py_version:
+        environ['EXT_COMPILER'] = 'mingw32'
+      else:
+        environ['EXT_COMPILER'] = 'msvc'
+      # For some reason, the batch script %random% always runs with the same
+      # seed.  We create a random temp-dir here
+      dir = ''.join(random.choice(string.ascii_uppercase) for _ in range(10))
       return create_jobspec(self.name,
                             ['tools\\run_tests\\build_artifact_python.bat',
-                             self.python_windows_prefix,
-                             '32' if self.arch == 'x86' else '64'
+                             self.py_version,
+                             '32' if self.arch == 'x86' else '64',
+                             dir
                             ],
+                            environ=environ,
                             shell=True)
     else:
-      environ['PYTHON'] = 'python{}'.format(self.python_version)
+      environ['PYTHON'] = self.py_version
+      environ['SKIP_PIP_INSTALL'] = 'TRUE'
       return create_jobspec(self.name,
                             ['tools/run_tests/build_artifact_python.sh'],
                             environ=environ)
@@ -330,18 +331,23 @@ def targets():
            for Cls in (CSharpExtArtifact, NodeExtArtifact, ProtocArtifact)
            for platform in ('linux', 'macos', 'windows')
            for arch in ('x86', 'x64')] +
-          [PythonArtifact('linux', 'x86', '2.7', 'cp27-cp27m'),
-           PythonArtifact('linux', 'x86', '2.7', 'cp27-cp27mu'),
-           PythonArtifact('linux', 'x64', '2.7', 'cp27-cp27m'),
-           PythonArtifact('linux', 'x64', '2.7', 'cp27-cp27mu'),
-           PythonArtifact('macos', 'x64', '2.7'),
-           PythonArtifact('windows', 'x86', '2.7'),
-           PythonArtifact('windows', 'x64', '2.7'),
-           PythonArtifact('linux', 'x86', '3.4', 'cp34-cp34m'),
-           PythonArtifact('linux', 'x64', '3.4', 'cp34-cp34m'),
-           PythonArtifact('macos', 'x64', '3.4'),
-           PythonArtifact('windows', 'x86', '3.4'),
-           PythonArtifact('windows', 'x64', '3.4'),
+          [PythonArtifact('linux', 'x86', 'cp27-cp27m'),
+           PythonArtifact('linux', 'x86', 'cp27-cp27mu'),
+           PythonArtifact('linux', 'x86', 'cp34-cp34m'),
+           PythonArtifact('linux', 'x86', 'cp35-cp35m'),
+           PythonArtifact('linux', 'x64', 'cp27-cp27m'),
+           PythonArtifact('linux', 'x64', 'cp27-cp27mu'),
+           PythonArtifact('linux', 'x64', 'cp34-cp34m'),
+           PythonArtifact('linux', 'x64', 'cp35-cp35m'),
+           PythonArtifact('macos', 'x64', 'python2.7'),
+           PythonArtifact('macos', 'x64', 'python3.4'),
+           PythonArtifact('macos', 'x64', 'python3.5'),
+           PythonArtifact('windows', 'x86', 'Python27_32bits'),
+           PythonArtifact('windows', 'x86', 'Python34_32bits'),
+           PythonArtifact('windows', 'x86', 'Python35_32bits'),
+           PythonArtifact('windows', 'x64', 'Python27'),
+           PythonArtifact('windows', 'x64', 'Python34'),
+           PythonArtifact('windows', 'x64', 'Python35'),
            RubyArtifact('linux', 'x86'),
            RubyArtifact('linux', 'x64'),
            RubyArtifact('macos', 'x64'),
diff --git a/tools/run_tests/build_artifact_python.bat b/tools/run_tests/build_artifact_python.bat
index 074a3c6781..246713a6ce 100644
--- a/tools/run_tests/build_artifact_python.bat
+++ b/tools/run_tests/build_artifact_python.bat
@@ -36,31 +36,43 @@ pip install -rrequirements.txt
 
 set GRPC_PYTHON_BUILD_WITH_CYTHON=1
 
+@rem Multiple builds are running simultaneously, so to avoid distutils
+@rem file collisions, we build everything in a tmp directory
+if not exist "artifacts" mkdir "artifacts"
+set ARTIFACT_DIR=%cd%\artifacts
+set BUILD_DIR=C:\Windows\Temp\pygrpc-%3\
+mkdir %BUILD_DIR%
+xcopy /s/e/q %cd%\* %BUILD_DIR%
+pushd %BUILD_DIR%
+
 
 @rem Set up gRPC Python tools
 python tools\distrib\python\make_grpcio_tools.py
 
 @rem Build gRPC Python extensions
-python setup.py build_ext -c mingw32
+python setup.py build_ext -c %EXT_COMPILER% || goto :error
 
 pushd tools\distrib\python\grpcio_tools
-python setup.py build_ext -c mingw32
+python setup.py build_ext -c %EXT_COMPILER% || goto :error
 popd
 
-
 @rem Build gRPC Python distributions
-python setup.py bdist_wheel
+python setup.py bdist_wheel || goto :error
 
 pushd tools\distrib\python\grpcio_tools
-python setup.py bdist_wheel
+python setup.py bdist_wheel || goto :error
 popd
 
 
-mkdir artifacts
-xcopy /Y /I /S dist\* artifacts\ || goto :error
-xcopy /Y /I /S tools\distrib\python\grpcio_tools\dist\* artifacts\ || goto :error
+xcopy /Y /I /S dist\* %ARTIFACT_DIR% || goto :error
+xcopy /Y /I /S tools\distrib\python\grpcio_tools\dist\* %ARTIFACT_DIR% || goto :error
+
+popd
+rmdir /s /q %BUILD_DIR%
 
 goto :EOF
 
 :error
+popd
+rmdir /s /q %BUILD_DIR%
 exit /b 1
diff --git a/tools/run_tests/build_artifact_python.sh b/tools/run_tests/build_artifact_python.sh
index 8f8330ef24..9fed7c5028 100755
--- a/tools/run_tests/build_artifact_python.sh
+++ b/tools/run_tests/build_artifact_python.sh
@@ -38,38 +38,42 @@ export PYTHON=${PYTHON:-python}
 export PIP=${PIP:-pip}
 export AUDITWHEEL=${AUDITWHEEL:-auditwheel}
 
+# Because multiple builds run in parallel, some distutils file
+# operations may collide.  To avoid this, each build is run in
+# a temp directory
+mkdir -p artifacts
+ARTIFACT_DIR="$PWD/artifacts"
+BUILD_DIR=`mktemp -d "${TMPDIR:-/tmp}/pygrpc.XXXXXX"`
+trap "rm -rf $BUILD_DIR" EXIT
+cp -r * "$BUILD_DIR"
+cd "$BUILD_DIR"
 
 # Build the source distribution first because MANIFEST.in cannot override
 # exclusion of built shared objects among package resources (for some
 # inexplicable reason).
-${SETARCH_CMD} ${PYTHON} setup.py  \
-    sdist
+${SETARCH_CMD} ${PYTHON} setup.py sdist
 
 # Wheel has a bug where directories don't get excluded.
 # https://bitbucket.org/pypa/wheel/issues/99/cannot-exclude-directory
-${SETARCH_CMD} ${PYTHON} setup.py  \
-    bdist_wheel
+${SETARCH_CMD} ${PYTHON} setup.py bdist_wheel
 
 # Build gRPC tools package distribution
 ${PYTHON} tools/distrib/python/make_grpcio_tools.py
 
 # Build gRPC tools package source distribution
-${SETARCH_CMD} ${PYTHON} tools/distrib/python/grpcio_tools/setup.py  \
-    sdist
+${SETARCH_CMD} ${PYTHON} tools/distrib/python/grpcio_tools/setup.py sdist
 
 # Build gRPC tools package binary distribution
-CFLAGS="$CFLAGS -fno-wrapv" ${SETARCH_CMD} \
-  ${PYTHON} tools/distrib/python/grpcio_tools/setup.py bdist_wheel
+${SETARCH_CMD} ${PYTHON} tools/distrib/python/grpcio_tools/setup.py bdist_wheel
 
-mkdir -p artifacts
 if [ "$BUILD_MANYLINUX_WHEEL" != "" ]
 then
   for wheel in dist/*.whl; do
-    ${AUDITWHEEL} repair $wheel -w artifacts/
+    ${AUDITWHEEL} repair $wheel -w "$ARTIFACT_DIR"
     rm $wheel
   done
   for wheel in tools/distrib/python/grpcio_tools/dist/*.whl; do
-    ${AUDITWHEEL} repair $wheel -w artifacts/
+    ${AUDITWHEEL} repair $wheel -w "$ARTIFACT_DIR"
     rm $wheel
   done
 fi
@@ -81,14 +85,14 @@ fi
 if [ "$BUILD_HEALTH_CHECKING" != "" ]
 then
   ${PIP} install -rrequirements.txt
-  ${PIP} install grpcio --no-index --find-links "file://${PWD}/artifacts/"
-  ${PIP} install grpcio-tools --no-index --find-links "file://${PWD}/artifacts/"
+  ${PIP} install grpcio --no-index --find-links "file://$ARTIFACT_DIR/"
+  ${PIP} install grpcio-tools --no-index --find-links "file://$ARTIFACT_DIR/"
 
   # Build gRPC health check source distribution
   ${SETARCH_CMD} ${PYTHON} src/python/grpcio_health_checking/setup.py \
       preprocess build_package_protos sdist
-  cp -r src/python/grpcio_health_checking/dist/* artifacts
+  cp -r src/python/grpcio_health_checking/dist/* "$ARTIFACT_DIR"
 fi
 
-cp -r dist/* artifacts
-cp -r tools/distrib/python/grpcio_tools/dist/* artifacts
+cp -r dist/* "$ARTIFACT_DIR"
+cp -r tools/distrib/python/grpcio_tools/dist/* "$ARTIFACT_DIR"
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index d2ab5b01cc..5562d330fd 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -45,7 +45,7 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
  c99458533a9b4c743ed51537e25989ea55944908 third_party/googletest (release-1.7.0)
  f8ac463766281625ad710900479130c7fcb4d63b third_party/nanopb (nanopb-0.3.4-29-gf8ac463)
- e8ae137c96444ea313485ed1118c5e43b2099cf1 third_party/protobuf (v3.0.0-beta-4-74-ge8ae137)
+ bba446bbf2ac7b0b9923d4eb07d5acd0665a8cf0 third_party/protobuf (v3.0.0-beta-4-160-gbba446b)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
  bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift
 EOF
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 07be4a94ba..83feba6b8e 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -4443,6 +4443,7 @@
   }, 
   {
     "deps": [
+      "gpr", 
       "grpc", 
       "grpc++_base", 
       "grpc++_codegen_base", 
@@ -4563,7 +4564,6 @@
   {
     "deps": [
       "gpr", 
-      "grpc", 
       "grpc++_base", 
       "grpc++_codegen_base", 
       "grpc++_codegen_base_src", 
@@ -5848,6 +5848,7 @@
       "include/grpc/compression.h", 
       "include/grpc/grpc.h", 
       "include/grpc/grpc_posix.h", 
+      "include/grpc/grpc_security_constants.h", 
       "include/grpc/status.h", 
       "src/core/lib/channel/channel_args.h", 
       "src/core/lib/channel/channel_stack.h", 
@@ -5939,6 +5940,7 @@
       "include/grpc/compression.h", 
       "include/grpc/grpc.h", 
       "include/grpc/grpc_posix.h", 
+      "include/grpc/grpc_security_constants.h", 
       "include/grpc/status.h", 
       "src/core/lib/channel/channel_args.c", 
       "src/core/lib/channel/channel_args.h", 
@@ -6123,7 +6125,6 @@
     "headers": [
       "src/core/ext/client_config/client_channel.h", 
       "src/core/ext/client_config/client_channel_factory.h", 
-      "src/core/ext/client_config/client_config.h", 
       "src/core/ext/client_config/connector.h", 
       "src/core/ext/client_config/initial_connect_string.h", 
       "src/core/ext/client_config/lb_policy.h", 
@@ -6133,6 +6134,7 @@
       "src/core/ext/client_config/resolver.h", 
       "src/core/ext/client_config/resolver_factory.h", 
       "src/core/ext/client_config/resolver_registry.h", 
+      "src/core/ext/client_config/resolver_result.h", 
       "src/core/ext/client_config/subchannel.h", 
       "src/core/ext/client_config/subchannel_call_holder.h", 
       "src/core/ext/client_config/subchannel_index.h", 
@@ -6146,8 +6148,6 @@
       "src/core/ext/client_config/client_channel.h", 
       "src/core/ext/client_config/client_channel_factory.c", 
       "src/core/ext/client_config/client_channel_factory.h", 
-      "src/core/ext/client_config/client_config.c", 
-      "src/core/ext/client_config/client_config.h", 
       "src/core/ext/client_config/client_config_plugin.c", 
       "src/core/ext/client_config/connector.c", 
       "src/core/ext/client_config/connector.h", 
@@ -6168,6 +6168,8 @@
       "src/core/ext/client_config/resolver_factory.h", 
       "src/core/ext/client_config/resolver_registry.c", 
       "src/core/ext/client_config/resolver_registry.h", 
+      "src/core/ext/client_config/resolver_result.c", 
+      "src/core/ext/client_config/resolver_result.h", 
       "src/core/ext/client_config/subchannel.c", 
       "src/core/ext/client_config/subchannel.h", 
       "src/core/ext/client_config/subchannel_call_holder.c", 
@@ -6321,7 +6323,6 @@
     ], 
     "headers": [
       "include/grpc/grpc_security.h", 
-      "include/grpc/grpc_security_constants.h", 
       "src/core/lib/security/context/security_context.h", 
       "src/core/lib/security/credentials/composite/composite_credentials.h", 
       "src/core/lib/security/credentials/credentials.h", 
@@ -6346,7 +6347,6 @@
     "name": "grpc_secure", 
     "src": [
       "include/grpc/grpc_security.h", 
-      "include/grpc/grpc_security_constants.h", 
       "src/core/lib/http/httpcli_security_connector.c", 
       "src/core/lib/security/context/security_context.c", 
       "src/core/lib/security/context/security_context.h", 
@@ -6667,8 +6667,9 @@
   }, 
   {
     "deps": [
-      "grpc", 
-      "grpc++_codegen_base"
+      "gpr", 
+      "grpc++_codegen_base", 
+      "grpc_base"
     ], 
     "headers": [
       "include/grpc++/alarm.h", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index a2fc902f2d..24f81f9319 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -54902,6 +54902,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0083d5addbeca55271ed7ef93c8016bf7ca76903"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/00c8446b230bebbae2b473552b174a06b446337a"
     ], 
     "ci_platforms": [
@@ -55130,6 +55149,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/07b0bed3226eefac4a84000ec584e4ce06ebf1bf"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/07cec5c8d9c856a910c6fb57da2ae954f44beed0"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/08a8a647b6a8f47ae10852322d14832fc15021f1"
     ], 
     "ci_platforms": [
@@ -55187,6 +55244,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0c27c9999302b39bf2256a90b0cdb767fb2b6fe3"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0c30868720d5e1a19ff23c53740749c37a43540d"
     ], 
     "ci_platforms": [
@@ -55263,6 +55339,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d407f099f8418de3dd94bd2146c858a8c6575ad"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d4d486aa9fd6e9c10cc9ca8967e922cadddb2fe"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0d8c547f1d261ba07c2648bae009636c17709600"
     ], 
     "ci_platforms": [
@@ -55282,6 +55396,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d9ba07b57eb0e076b187c4455f662db085e730b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0dd33527db106a3e84172e8f2189734b00ced4ed"
     ], 
     "ci_platforms": [
@@ -55339,6 +55472,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0f6b989cec08ef9da603dc83704d85900bd22f1f"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0f83cbec19c834f534f353f4fce20c0cd88231f5"
     ], 
     "ci_platforms": [
@@ -55434,6 +55586,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/10b25b0726cb6d820165699e5a453691c7a9c343"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/10f5d1937cb068fee7f85e2654be2bfe77498bb9"
     ], 
     "ci_platforms": [
@@ -55510,6 +55681,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1231c6d007d9e43d169122348363e20d9f25ee93"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1306c4c6ea714d4db0e4d814c944d8d40335e0fa"
     ], 
     "ci_platforms": [
@@ -55529,6 +55719,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/13a9b61e431c20734c19bb36d85883b6a501284e"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1402bbcac6fa24eeb0475250e33f704096e2fb45"
     ], 
     "ci_platforms": [
@@ -55643,6 +55852,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1698ec182fad9d973b84615da3a683ecdf2d0b3b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/169f579e66b4b8ff423891a40380e648e8d45247"
     ], 
     "ci_platforms": [
@@ -55700,6 +55928,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1859e2ee759e20fe195f67615a1576ce2b7d5bbd"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1875a4acdcffe505ca92ea8af8d9d6b174736e80"
     ], 
     "ci_platforms": [
@@ -55795,6 +56042,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1a9017db5ad8a9dc6cfe72305da1683a87a73452"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1aee32faadffa3c2ec508e8fd30006423665488f"
     ], 
     "ci_platforms": [
@@ -55833,6 +56099,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1bd90335afc9e0a1e6a9296e3cc27c03c1201886"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1be157b0fc79f0e7e1e05dfa3cbbe1ad71528bc2"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1c222dae4e2cde1fca9f9bf6226200f70d625342"
     ], 
     "ci_platforms": [
@@ -56194,6 +56498,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2185f411bdb1edc610f16ffc86836ae366193e03"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/21a6a133f3d1e06c077032ba56a7df4161f62efe"
     ], 
     "ci_platforms": [
@@ -56232,6 +56555,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/22661803bd1c7198df4be6e08924ef6a48af9cd4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/230527b90b0179139c961aca426187893191fdf2"
     ], 
     "ci_platforms": [
@@ -56479,6 +56821,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2717067bbc0e9bfc1d90d15cddf6154800a25ec6"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/27f37037525aac7a41ffbadd6ce52e5a1851a2b7"
     ], 
     "ci_platforms": [
@@ -56498,6 +56859,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2825cfc19c9371f4fe70851283c68d49470d4d55"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2862adc802092f1a422416a1666a5142f71d5d7f"
     ], 
     "ci_platforms": [
@@ -56593,6 +56973,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/29303c16f3afa18c2c0b84e77e587535a705a74c"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/299034b9e0cc8d91c049c489dca6d1a2b8b08959"
     ], 
     "ci_platforms": [
@@ -56707,6 +57106,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2b5eb5aac77af905877bd98ec2c4d746b247abb6"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2b71439e9ebf611a92386b9f21ad44bde7926184"
     ], 
     "ci_platforms": [
@@ -56821,6 +57239,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2cc43573f271ecd332551c1fb34ebc8645eaefe8"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2d83097b3cbd2245b085e749fe923fb590790e0c"
     ], 
     "ci_platforms": [
@@ -56935,6 +57372,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2feb41037f5dd34e9f3465a2fbf1a6d355c8ce9d"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/300998021c7f743ff49d9cc192343ffd43eb47f2"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/301e10bb6d9f60d91efde4e0c48893203a5b8b88"
     ], 
     "ci_platforms": [
@@ -56973,6 +57448,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/310b2aff5e2ec78b6004630bed39d49f8d13bb21"
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/3128887b8e02f1873ed6b36766a870543269ea00"
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@@ -57353,6 +57847,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/3bb052abecc1b916cc869b9aad29c9dd55a95068"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
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@@ -57372,6 +57885,44 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/3c5fa483ebfabe6e684831ce7c413176bc998c33"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/3c6444b64ace5cd6c145614ad4412382271a6120"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "platforms": [
+      "linux"
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/3c7b516e302ad3503a933b5dcfb8c58acaea07a0"
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@@ -57486,6 +58037,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/4045d25f065bb1d70a8b9c3751f7453d4b0625b9"
+    ], 
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/407cedf992b14edac6e19f7d440ab73c88e72465"
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+      "linux"
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+    "platforms": [
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/4097094277bc09981f428280fc0cc0f590f20ded"
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@@ -57505,6 +58094,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/411966ea7d9164fc432eeab55a55248ad808bb01"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/415dde26637ed3c0e803111c532a1a9ea9c49092"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/41aad2f11a7ab418213352e84de872d9997db8d2"
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@@ -58056,6 +58683,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/4fc34239f220392581520aa8cebc659daa65a7a6"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/50ece7ea16659b4e1a2284cea963fab662c19e6b"
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@@ -58113,6 +58759,25 @@
   }, 
   {
     "args": [
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+      "linux"
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+    "platforms": [
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+    "uses_polling": false
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+  {
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@@ -58170,6 +58835,44 @@
   }, 
   {
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+    ], 
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+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/53ef530f65b0cff2e338a51b469c224f53b628d7"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/542c958c84d1e319b9ba23c52de2c4bca08a8dc7"
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     "ci_platforms": [
@@ -58265,6 +58968,63 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/560c1057487e6b0d2d457748c3ad8434423eb263"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/564f203f678fb333c7b1f8f4df79237589ce346d"
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+    "ci_platforms": [
+      "linux"
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+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/56b0ac0636c57838f63415082b3ae2ec7a93f017"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/570ca8d2555dde94aa3b3121e8f5256e83eabe5e"
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@@ -58341,6 +59101,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/58bcbd601894835bb3312d2a0bc56f2e0f65984c"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/58d6dffb65a1fe1bc4e3fa970a15459587a32f77"
     ], 
     "ci_platforms": [
@@ -58379,6 +59158,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/598d346f284bcff26d1de997c4ba5c4794c90b68"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/59d28886db21f371ac9d999b68b116bcf425d971"
     ], 
     "ci_platforms": [
@@ -58436,6 +59234,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5c14b48da74ab06b3cc20c4fe355e24f7dd7852a"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/5ca233a53e3e425cc12e04b466a49789291eaa00"
     ], 
     "ci_platforms": [
@@ -58474,6 +59291,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5de72e607205dc17a45df703ec4e9b63c36821ec"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/5e1659e7cd840ab3f958273ebffdd215f2c81da6"
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     "ci_platforms": [
@@ -58493,6 +59329,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5e25cf639ba8ea37543d944f5efa94824c6272ff"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5f247d7b6753f7a8798cf952f49f303c532e017c"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/605e474e9d9436488dfe084d348908e4dfab81a3"
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     "ci_platforms": [
@@ -58607,6 +59481,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/63a1cb41d219394c9bab947202921506f3574ad0"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/64696e93ead18265cdac3fb37dae29ad3be6d764"
     ], 
     "ci_platforms": [
@@ -58683,6 +59576,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/650f74738d3961af2d1fe85ad8fc8212ea13cbbf"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/653ec14661c40ea25bdbab4a7cb9371c669d10d9"
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     "ci_platforms": [
@@ -58702,6 +59614,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/65dff388749da6a44926b491cdc555f61d708171"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/66145518601b1405361df12570f6e0b2b9a2e5b3"
     ], 
     "ci_platforms": [
@@ -58778,6 +59709,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/676adbb1e5b3f4f9e3cba51d3d4ef963ba4ea7e3"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/67e72cea2b7042f08e8dfba5191d27bb390e4d00"
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     "ci_platforms": [
@@ -58797,6 +59747,44 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/67f160446ded73c408f4e5a0665731b642b6edd4"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/6856c7cb02d2ba74a60fd47140f042701dda63b3"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/685fbddd9ea612b25e325a50bd659997b4d77da1"
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     "ci_platforms": [
@@ -58873,6 +59861,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/69e14b73af03e8f2d998cfcf16215f65bf589efb"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/69e52eef5dd0c51012b5c974cf70f4074ba814a9"
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     "ci_platforms": [
@@ -59158,6 +60165,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/77cff7548cafe87410e4a0dde3ba6892b25594d3"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/77ea9180617391d8503427a1c060538182f7729f"
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     "ci_platforms": [
@@ -59234,6 +60260,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/7beeb19272131701f3a0d1dd633f1b1969899366"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/7c2e48b0d08aaeb95b5ca26036384aa2cec9de77"
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@@ -59690,6 +60735,44 @@
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@@ -59823,6 +60906,25 @@
   }, 
   {
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+    ], 
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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@@ -59842,6 +60944,25 @@
   }, 
   {
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@@ -59956,6 +61077,25 @@
   }, 
   {
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@@ -60032,6 +61172,63 @@
   }, 
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@@ -60222,6 +61419,44 @@
   }, 
   {
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@@ -60602,6 +61837,25 @@
   }, 
   {
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@@ -60659,6 +61913,25 @@
   }, 
   {
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@@ -60754,6 +62027,25 @@
   }, 
   {
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+    "platforms": [
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/a5cf80b996b2ba8c9580f8ecd22720c48de41044"
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@@ -60792,6 +62084,25 @@
   }, 
   {
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+    "platforms": [
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/a6603e797695274d10bce000f66ca0a715f7d8c0"
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@@ -60887,6 +62198,44 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/a8e306820fb76566b522c23ec68bdce0ad0536f2"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/a8e67676784506d2e6eab3a0dfa25e53a80b40a0"
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@@ -60906,6 +62255,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/a97dbb159ef9bc6e39c9c25e04315752e871e739"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/a9d71e1ff2912d8874e38fc61cbd9a8ef28af4a9"
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@@ -61096,6 +62464,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/ae448bfe17f9a3a6eff074d4caa9f7261c94d2d5"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+  {
+    "args": [
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@@ -61115,6 +62502,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/ae8cdc02275a1436bc131bee52a17ee797e2e6c9"
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+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/aef36c49d7dec0dcf8cdc224d9e9221fa2cb1db0"
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@@ -61210,6 +62616,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/b10353c265bef989d8909055fd6cd52e49eef3e6"
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+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/b24a0dd1bc0bfabb832f0d1c8410c018c4ddaf4e"
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@@ -61324,6 +62749,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/b387e46c23912785e6c353ab49b8ea4a92c2c2e5"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/b39bfaf6a3072d8a50984dcc54967e9246f8d3e5"
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@@ -61343,6 +62787,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/b3cfcd55b0331ab0c931b8c61d4df41464587f10"
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+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/b3f33b78433af7f607bc99b569b0cef95a1a6ca0"
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@@ -61419,6 +62882,25 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/b758f5c019696f33c50895168219c0e6cb04e11d"
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+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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+  {
+    "args": [
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@@ -61457,6 +62939,44 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/b93fd0a15287dd035eac86e547e3ce42183bdb28"
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+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/ba3566735888b53712c6b2e6d52ff5f2197afd6a"
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+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/ba942f8fb244b60561a067129c242c4bc4fdd5e1"
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@@ -61590,6 +63110,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/bd275178fd473028a5cedf7d5780b27e809882ee"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/be3237e72b3d8d56eec0520145dd7d1a5064eede"
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     "ci_platforms": [
@@ -61742,6 +63281,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/c4c53b4727e9e1f040c5d7870639dd3daa184ddb"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/c4e60ae7c05b12a90dd7c43fbc85ae4be7540f18"
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     "ci_platforms": [
@@ -61932,6 +63490,25 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/c9e2cf8be8a4dc2294020026c62840ef1fb4853b"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/ca0db313bf949ba3f87a5254646a7a7dc8a7f89d"
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     "ci_platforms": [
@@ -61951,6 +63528,63 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/caaf9a7751c0eccc34f0fc00a048012ab5ed2f37"
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+    "ci_platforms": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/cb49955601d171fd14c9ac21137b221392c7dab1"
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+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -62046,6 +63680,25 @@
   }, 
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@@ -62141,6 +63794,25 @@
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@@ -62331,6 +64003,44 @@
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@@ -62540,6 +64250,25 @@
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@@ -62578,6 +64307,44 @@
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@@ -62654,6 +64421,25 @@
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@@ -62673,6 +64459,25 @@
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@@ -62730,6 +64535,25 @@
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@@ -62806,6 +64630,25 @@
   }, 
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@@ -63110,6 +64953,25 @@
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@@ -63186,6 +65048,25 @@
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@@ -63281,6 +65162,25 @@
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@@ -63585,6 +65485,44 @@
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f11abb090bae8cdac1f7d9a2e344f2def0e50066"
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@@ -63680,6 +65618,44 @@
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f5a629c8fd5720236b66a875e96ea22e29c45965"
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+    "platforms": [
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@@ -63699,6 +65675,25 @@
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@@ -63775,6 +65770,44 @@
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@@ -63813,6 +65846,25 @@
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@@ -63851,6 +65903,25 @@
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@@ -64060,6 +66131,25 @@
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