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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_PROTOCOL_STREAM_CHANNEL_FACTORY_H_
+#define REMOTING_PROTOCOL_STREAM_CHANNEL_FACTORY_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/threading/non_thread_safe.h"
+
+namespace net {
+class Socket;
+class StreamSocket;
+} // namespace net
+
+namespace remoting {
+namespace protocol {
+
+class StreamChannelFactory : public base::NonThreadSafe {
+ public:
+ // TODO(sergeyu): Specify connection error code when channel
+ // connection fails.
+ typedef base::Callback<void(scoped_ptr<net::StreamSocket>)>
+ ChannelCreatedCallback;
+
+ StreamChannelFactory() {}
+
+ // Creates new channels and calls the |callback| when then new channel is
+ // created and connected. The |callback| is called with NULL if connection
+ // failed for any reason. Callback may be called synchronously, before the
+ // call returns. All channels must be destroyed, and CancelChannelCreation()
+ // called for any pending channels, before the factory is destroyed.
+ virtual void CreateChannel(const std::string& name,
+ const ChannelCreatedCallback& callback) = 0;
+
+ // Cancels a pending CreateChannel() operation for the named channel. If the
+ // channel creation already completed then canceling it has no effect. When
+ // shutting down this method must be called for each channel pending creation.
+ virtual void CancelChannelCreation(const std::string& name) = 0;
+
+ protected:
+ virtual ~StreamChannelFactory() {}
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(StreamChannelFactory);
+};
+
+} // namespace protocol
+} // namespace remoting
+
+#endif // REMOTING_PROTOCOL_STREAM_CHANNEL_FACTORY_H_