1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_P2P_BASE_RAWTRANSPORT_H_ 29 #define TALK_P2P_BASE_RAWTRANSPORT_H_ 30 31 #include <string> 32 #include "talk/p2p/base/transport.h" 33 34 #if defined(FEATURE_ENABLE_PSTN) 35 namespace cricket { 36 37 // Implements a transport that only sends raw packets, no STUN. As a result, 38 // it cannot do pings to determine connectivity, so it only uses a single port 39 // that it thinks will work. 40 class RawTransport: public Transport, public TransportParser { 41 public: 42 RawTransport(talk_base::Thread* signaling_thread, 43 talk_base::Thread* worker_thread, 44 PortAllocator* allocator); 45 virtual ~RawTransport(); 46 47 virtual bool ParseCandidates(SignalingProtocol protocol, 48 const buzz::XmlElement* elem, 49 Candidates* candidates, 50 ParseError* error); 51 virtual bool WriteCandidates(SignalingProtocol protocol, 52 const Candidates& candidates, 53 XmlElements* candidate_elems, 54 WriteError* error); 55 56 protected: 57 // Creates and destroys raw channels. 58 virtual TransportChannelImpl* CreateTransportChannel( 59 const std::string& name, const std::string &content_type); 60 virtual void DestroyTransportChannel(TransportChannelImpl* channel); 61 62 private: 63 // Parses the given element, which should describe the address to use for a 64 // given channel. This will return false and signal an error if the address 65 // or channel name is bad. 66 bool ParseRawAddress(const buzz::XmlElement* elem, 67 talk_base::SocketAddress* addr, 68 ParseError* error); 69 70 friend class RawTransportChannel; // For ParseAddress. 71 72 DISALLOW_EVIL_CONSTRUCTORS(RawTransport); 73 }; 74 75 } // namespace cricket 76 77 #endif // defined(FEATURE_ENABLE_PSTN) 78 79 #endif // TALK_P2P_BASE_RAWTRANSPORT_H_ 80