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diff --git a/include/grpc++/channel_interface.h b/include/grpc++/channel_interface.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 __GRPCPP_CHANNEL_INTERFACE_H__
+#define __GRPCPP_CHANNEL_INTERFACE_H__
+
+#include <grpc++/status.h>
+
+namespace google {
+namespace protobuf {
+class Message;
+}
+}
+
+namespace grpc {
+
+class ClientContext;
+class RpcMethod;
+class StreamContextInterface;
+
+class ChannelInterface {
+ public:
+  virtual ~ChannelInterface() {}
+
+  virtual Status StartBlockingRpc(const RpcMethod& method,
+                                  ClientContext* context,
+                                  const google::protobuf::Message& request,
+                                  google::protobuf::Message* result) = 0;
+
+  virtual StreamContextInterface* CreateStream(const RpcMethod& method,
+                                               ClientContext* context,
+                                               const google::protobuf::Message* request,
+                                               google::protobuf::Message* result) = 0;
+};
+
+}  // namespace grpc
+
+#endif  // __GRPCPP_CHANNEL_INTERFACE_H__