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_UDPPORT_H_
29#define TALK_P2P_BASE_UDPPORT_H_
30
31#include <string>
32
33#include "talk/p2p/base/port.h"
34
35namespace talk_base {
36class Thread;
37class Network;
38class SocketAddress;
39}
40
41namespace cricket {
42
43extern const std::string LOCAL_PORT_TYPE;  // type of UDP ports
44
45// Communicates using a local UDP port.
46class UDPPort : public Port {
47 public:
48  static UDPPort* Create(talk_base::Thread* thread,
49                         talk_base::PacketSocketFactory* factory,
50                         talk_base::Network* network,
51                         uint32 ip, int min_port, int max_port) {
52    UDPPort* port = new UDPPort(thread, factory, network,
53                                ip, min_port, max_port);
54    if (!port->Init()) {
55      delete port;
56      port = NULL;
57    }
58    return port;
59  }
60  virtual ~UDPPort();
61
62  virtual void PrepareAddress();
63  virtual Connection* CreateConnection(const Candidate& address,
64                                       CandidateOrigin origin);
65
66  virtual int SetOption(talk_base::Socket::Option opt, int value);
67  virtual int GetError();
68
69 protected:
70  UDPPort(talk_base::Thread* thread, talk_base::PacketSocketFactory* factory,
71          talk_base::Network* network, uint32 ip, int min_port, int max_port);
72  bool Init();
73
74  // Handles sending using the local UDP socket.
75  virtual int SendTo(const void* data, size_t size,
76                     const talk_base::SocketAddress& remote_addr, bool payload);
77
78  void OnAddresReady(talk_base::AsyncPacketSocket* socket,
79                     const talk_base::SocketAddress& address);
80
81  // Dispatches the given packet to the port or connection as appropriate.
82  void OnReadPacket(talk_base::AsyncPacketSocket* socket,
83                    const char* data, size_t size,
84                    const talk_base::SocketAddress& remote_addr);
85
86 private:
87  talk_base::AsyncPacketSocket* socket_;
88  int error_;
89};
90
91}  // namespace cricket
92
93#endif  // TALK_P2P_BASE_UDPPORT_H_
94