1f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch/* 2f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * libjingle 3f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * Copyright 2004--2005, Google Inc. 4f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 5f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * Redistribution and use in source and binary forms, with or without 6f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * modification, are permitted provided that the following conditions are met: 7f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 8f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 1. Redistributions of source code must retain the above copyright notice, 9f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * this list of conditions and the following disclaimer. 10f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 2. Redistributions in binary form must reproduce the above copyright notice, 11f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * this list of conditions and the following disclaimer in the documentation 12f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * and/or other materials provided with the distribution. 13f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 3. The name of the author may not be used to endorse or promote products 14f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * derived from this software without specific prior written permission. 15f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 16f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch */ 27f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 28f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#ifndef TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_ 29f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#define TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_ 30f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 31f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#include <string> 32f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#include "talk/p2p/base/transportchannel.h" 33f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 34f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochnamespace buzz { class XmlElement; } 35f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 36f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochnamespace cricket { 37f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 38f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochclass Transport; 39f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochclass Candidate; 40f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 41f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch// Base class for real implementations of TransportChannel. This includes some 42f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch// methods called only by Transport, which do not need to be exposed to the 43f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch// client. 44f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochclass TransportChannelImpl : public TransportChannel { 45f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch public: 463345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick TransportChannelImpl(const std::string& name, const std::string& content_type) 473345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick : TransportChannel(name, content_type) {} 48f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 49f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Returns the transport that created this channel. 50f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch virtual Transport* GetTransport() = 0; 51f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 52f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Begins the process of attempting to make a connection to the other client. 53f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch virtual void Connect() = 0; 54f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 55f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Resets this channel back to the initial state (i.e., not connecting). 56f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch virtual void Reset() = 0; 57f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 58f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Allows an individual channel to request signaling and be notified when it 59f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // is ready. This is useful if the individual named channels have need to 60f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // send their own transport-info stanzas. 61f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch sigslot::signal0<> SignalRequestSignaling; 62f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch virtual void OnSignalingReady() = 0; 63f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 64f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Handles sending and receiving of candidates. The Transport 65f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // receives the candidates and may forward them to the relevant 66f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // channel. 67f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // 68f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // Note: Since candidates are delivered asynchronously to the 69f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // channel, they cannot return an error if the message is invalid. 70f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // It is assumed that the Transport will have checked validity 71f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // before forwarding. 72f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch sigslot::signal2<TransportChannelImpl*, 73f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch const Candidate&> SignalCandidateReady; 74f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch virtual void OnCandidate(const Candidate& candidate) = 0; 75f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch private: 76f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch DISALLOW_EVIL_CONSTRUCTORS(TransportChannelImpl); 77f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch}; 78f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 79f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch} // namespace cricket 80f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 81f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#endif // TALK_P2P_BASE_TRANSPORTCHANNELIMPL_H_ 82