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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 TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_
#define TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_
#include <string>
#include "talk/p2p/base/transportchannel.h"
namespace buzz { class XmlElement; }
namespace cricket {
class Transport;
class Candidate;
// Base class for real implementations of TransportChannel. This includes some
// methods called only by Transport, which do not need to be exposed to the
// client.
class TransportChannelImpl : public TransportChannel {
public:
TransportChannelImpl(const std::string& name, const std::string& content_type)
: TransportChannel(name, content_type) {}
// Returns the transport that created this channel.
virtual Transport* GetTransport() = 0;
// Begins the process of attempting to make a connection to the other client.
virtual void Connect() = 0;
// Resets this channel back to the initial state (i.e., not connecting).
virtual void Reset() = 0;
// Allows an individual channel to request signaling and be notified when it
// is ready. This is useful if the individual named channels have need to
// send their own transport-info stanzas.
sigslot::signal0<> SignalRequestSignaling;
virtual void OnSignalingReady() = 0;
// Handles sending and receiving of candidates. The Transport
// receives the candidates and may forward them to the relevant
// channel.
//
// Note: Since candidates are delivered asynchronously to the
// channel, they cannot return an error if the message is invalid.
// It is assumed that the Transport will have checked validity
// before forwarding.
sigslot::signal2<TransportChannelImpl*,
const Candidate&> SignalCandidateReady;
virtual void OnCandidate(const Candidate& candidate) = 0;
private:
DISALLOW_EVIL_CONSTRUCTORS(TransportChannelImpl);
};
} // namespace cricket
#endif // TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_
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