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* Copyright 2004--2005, Google Inc.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef TALK_P2P_BASE_TRANSPORTCHANNELPROXY_H_
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#define TALK_P2P_BASE_TRANSPORTCHANNELPROXY_H_
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#include "talk/p2p/base/transportchannel.h"
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class TransportChannelImpl;
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// Proxies calls between the client and the transport channel implementation.
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// This is needed because clients are allowed to create channels before the
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// network negotiation is complete. Hence, we create a proxy up front, and
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// when negotiation completes, connect the proxy to the implementaiton.
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class TransportChannelProxy: public TransportChannel {
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TransportChannelProxy(const std::string& name,
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const std::string& content_type);
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virtual ~TransportChannelProxy();
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TransportChannelImpl* impl() { return impl_; }
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// Sets the implementation to which we will proxy.
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void SetImplementation(TransportChannelImpl* impl);
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// Implementation of the TransportChannel interface. These simply forward to
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// the implementation.
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virtual int SendPacket(const char* data, size_t len);
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virtual int SetOption(talk_base::Socket::Option opt, int value);
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virtual int GetError();
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virtual P2PTransportChannel* GetP2PChannel();
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typedef std::pair<talk_base::Socket::Option, int> OptionPair;
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typedef std::vector<OptionPair> OptionList;
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TransportChannelImpl* impl_;
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OptionList pending_options_;
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// Catch signals from the implementation channel. These just forward to the
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// client (after updating our state to match).
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void OnReadableState(TransportChannel* channel);
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void OnWritableState(TransportChannel* channel);
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void OnReadPacket(TransportChannel* channel, const char* data, size_t size);
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void OnRouteChange(TransportChannel* channel, const Candidate& candidate);
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DISALLOW_EVIL_CONSTRUCTORS(TransportChannelProxy);
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} // namespace cricket
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#endif // TALK_P2P_BASE_TRANSPORTCHANNELPROXY_H_