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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _CRICKET_P2P_BASE_TRANSPORTCHANNELPROXY_H_
#define _CRICKET_P2P_BASE_TRANSPORTCHANNELPROXY_H_
#include <string>
#include <vector>
#include "talk/p2p/base/transportchannel.h"
namespace cricket {
class TransportChannelImpl;
// Proxies calls between the client and the transport channel implementation.
// This is needed because clients are allowed to create channels before the
// network negotiation is complete. Hence, we create a proxy up front, and
// when negotiation completes, connect the proxy to the implementaiton.
class TransportChannelProxy: public TransportChannel {
public:
TransportChannelProxy(const std::string& name, const std::string &content_type);
virtual ~TransportChannelProxy();
TransportChannelImpl* impl() const { return impl_; }
// Sets the implementation to which we will proxy.
void SetImplementation(TransportChannelImpl* impl);
// Implementation of the TransportChannel interface. These simply forward to
// the implementation.
virtual int SendPacket(const char *data, size_t len);
virtual int SetOption(talk_base::Socket::Option opt, int value);
virtual int GetError();
virtual P2PTransportChannel* GetP2PChannel();
private:
typedef std::pair<talk_base::Socket::Option, int> OptionPair;
typedef std::vector<OptionPair> OptionList;
TransportChannelImpl* impl_;
OptionList pending_options_;
// Catch signals from the implementation channel. These just forward to the
// client (after updating our state to match).
void OnReadableState(TransportChannel* channel);
void OnWritableState(TransportChannel* channel);
void OnReadPacket(TransportChannel* channel, const char* data, size_t size);
void OnRouteChange(TransportChannel* channel, const talk_base::SocketAddress& address);
DISALLOW_EVIL_CONSTRUCTORS(TransportChannelProxy);
};
} // namespace cricket
#endif // _CRICKET_P2P_BASE_TRANSPORTCHANNELPROXY_H_
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