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)
35namespace 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.
40class RawTransport : public Transport, public TransportParser {
41 public:
42  RawTransport(rtc::Thread* signaling_thread,
43               rtc::Thread* worker_thread,
44               const std::string& content_name,
45               PortAllocator* allocator);
46  virtual ~RawTransport();
47
48  virtual bool ParseCandidates(SignalingProtocol protocol,
49                               const buzz::XmlElement* elem,
50                               const CandidateTranslator* translator,
51                               Candidates* candidates,
52                               ParseError* error);
53  virtual bool WriteCandidates(SignalingProtocol protocol,
54                               const Candidates& candidates,
55                               const CandidateTranslator* translator,
56                               XmlElements* candidate_elems,
57                               WriteError* error);
58
59 protected:
60  // Creates and destroys raw channels.
61  virtual TransportChannelImpl* CreateTransportChannel(int component);
62  virtual void DestroyTransportChannel(TransportChannelImpl* channel);
63
64 private:
65  // Parses the given element, which should describe the address to use for a
66  // given channel.  This will return false and signal an error if the address
67  // or channel name is bad.
68  bool ParseRawAddress(const buzz::XmlElement* elem,
69                       rtc::SocketAddress* addr,
70                       ParseError* error);
71
72  friend class RawTransportChannel;  // For ParseAddress.
73
74  DISALLOW_EVIL_CONSTRUCTORS(RawTransport);
75};
76
77}  // namespace cricket
78
79#endif  // defined(FEATURE_ENABLE_PSTN)
80
81#endif  // TALK_P2P_BASE_RAWTRANSPORT_H_
82