Initial import.
diff --git a/src/core/channel/client_channel.h b/src/core/channel/client_channel.h
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+++ b/src/core/channel/client_channel.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPC_INTERNAL_CHANNEL_CLIENT_CHANNEL_H__
+#define __GRPC_INTERNAL_CHANNEL_CLIENT_CHANNEL_H__
+
+#include "src/core/channel/channel_stack.h"
+
+/* A client channel is a channel that begins disconnected, and can connect
+ to some endpoint on demand. If that endpoint disconnects, it will be
+ connected to again later.
+
+ Calls on a disconnected client channel are queued until a connection is
+ established. */
+
+extern const grpc_channel_filter grpc_client_channel_filter;
+
+/* post-construction initializer to let the client channel know which
+ transport setup it should cancel upon destruction, or initiate when it needs
+ a connection */
+void grpc_client_channel_set_transport_setup(grpc_channel_stack *channel_stack,
+ grpc_transport_setup *setup);
+
+/* grpc_transport_setup_callback for binding new transports into a client
+ channel - user_data should be the channel stack containing the client
+ channel */
+grpc_transport_setup_result grpc_client_channel_transport_setup_complete(
+ grpc_channel_stack *channel_stack, grpc_transport *transport,
+ grpc_channel_filter const **channel_filters, size_t num_channel_filters,
+ grpc_mdctx *mdctx);
+
+#endif /* __GRPC_INTERNAL_CHANNEL_CLIENT_CHANNEL_H__ */