// 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_CHANNEL_FACTORY_H_
#define REMOTING_PROTOCOL_CHANNEL_FACTORY_H_
#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 ChannelFactory : public base::NonThreadSafe {
public:
// TODO(sergeyu): Specify connection error code when channel
// connection fails.
typedef base::Callback<void(scoped_ptr<net::StreamSocket>)>
StreamChannelCallback;
typedef base::Callback<void(scoped_ptr<net::Socket>)>
DatagramChannelCallback;
ChannelFactory() {}
// Creates new channels for this connection. The specified callback is called
// 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
// before the factory is destroyed and CancelChannelCreation() must be called
// to cancel creation of channels for which the |callback| hasn't been called
// yet.
virtual void CreateStreamChannel(
const std::string& name, const StreamChannelCallback& callback) = 0;
virtual void CreateDatagramChannel(
const std::string& name, const DatagramChannelCallback& callback) = 0;
// Cancels a pending CreateStreamChannel() or CreateDatagramChannel()
// 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 ~ChannelFactory() {}
private:
DISALLOW_COPY_AND_ASSIGN(ChannelFactory);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_CHANNEL_FACTORY_H_