1/*
2 * libjingle
3 * Copyright 2013, 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_ASYNCSTUNTCPSOCKET_H_
29#define TALK_P2P_BASE_ASYNCSTUNTCPSOCKET_H_
30
31#include "webrtc/base/asynctcpsocket.h"
32#include "webrtc/base/scoped_ptr.h"
33#include "webrtc/base/socketfactory.h"
34
35namespace cricket {
36
37class AsyncStunTCPSocket : public rtc::AsyncTCPSocketBase {
38 public:
39  // Binds and connects |socket| and creates AsyncTCPSocket for
40  // it. Takes ownership of |socket|. Returns NULL if bind() or
41  // connect() fail (|socket| is destroyed in that case).
42  static AsyncStunTCPSocket* Create(
43      rtc::AsyncSocket* socket,
44      const rtc::SocketAddress& bind_address,
45      const rtc::SocketAddress& remote_address);
46
47  AsyncStunTCPSocket(rtc::AsyncSocket* socket, bool listen);
48  virtual ~AsyncStunTCPSocket() {}
49
50  virtual int Send(const void* pv, size_t cb,
51                   const rtc::PacketOptions& options);
52  virtual void ProcessInput(char* data, size_t* len);
53  virtual void HandleIncomingConnection(rtc::AsyncSocket* socket);
54
55 private:
56  // This method returns the message hdr + length written in the header.
57  // This method also returns the number of padding bytes needed/added to the
58  // turn message. |pad_bytes| should be used only when |is_turn| is true.
59  size_t GetExpectedLength(const void* data, size_t len,
60                           int* pad_bytes);
61
62  DISALLOW_EVIL_CONSTRUCTORS(AsyncStunTCPSocket);
63};
64
65}  // namespace cricket
66
67#endif  // TALK_P2P_BASE_ASYNCSTUNTCPSOCKET_H_
68