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#include "talk/p2p/base/udpport.h"
29
30#include "talk/base/asyncpacketsocket.h"
31#include "talk/base/logging.h"
32#include "talk/p2p/base/common.h"
33
34namespace cricket {
35
36const std::string LOCAL_PORT_TYPE("local");
37
38UDPPort::UDPPort(talk_base::Thread* thread,
39                 talk_base::PacketSocketFactory* factory,
40                 talk_base::Network* network,
41                 uint32 ip, int min_port, int max_port)
42    : Port(thread, LOCAL_PORT_TYPE, factory, network, ip, min_port, max_port),
43      socket_(NULL),
44      error_(0) {
45}
46
47bool UDPPort::Init() {
48  socket_ =  factory_->CreateUdpSocket(
49      talk_base::SocketAddress(ip_, 0), min_port_, max_port_);
50  if (!socket_) {
51    LOG_J(LS_WARNING, this) << "UDP socket creation failed";
52    return false;
53  }
54  socket_->SignalReadPacket.connect(this, &UDPPort::OnReadPacket);
55  return true;
56}
57
58UDPPort::~UDPPort() {
59  delete socket_;
60}
61
62void UDPPort::PrepareAddress() {
63  bool allocated;
64  talk_base::SocketAddress address = socket_->GetLocalAddress(&allocated);
65  if (allocated) {
66    AddAddress(address, "udp", true);
67  } else {
68    socket_->SignalAddressReady.connect(this, &UDPPort::OnAddresReady);
69  }
70}
71
72Connection* UDPPort::CreateConnection(const Candidate& address,
73                                      CandidateOrigin origin) {
74  if (address.protocol() != "udp")
75    return NULL;
76
77  Connection* conn = new ProxyConnection(this, 0, address);
78  AddConnection(conn);
79  return conn;
80}
81
82int UDPPort::SendTo(const void* data, size_t size,
83                    const talk_base::SocketAddress& addr, bool payload) {
84  int sent = socket_->SendTo(data, size, addr);
85  if (sent < 0) {
86    error_ = socket_->GetError();
87    LOG_J(LS_ERROR, this) << "UDP send of " << size
88                          << " bytes failed with error " << error_;
89  }
90  return sent;
91}
92
93int UDPPort::SetOption(talk_base::Socket::Option opt, int value) {
94  return socket_->SetOption(opt, value);
95}
96
97int UDPPort::GetError() {
98  return error_;
99}
100
101void UDPPort::OnAddresReady(talk_base::AsyncPacketSocket* socket,
102                            const talk_base::SocketAddress& address) {
103  AddAddress(address, "udp", true);
104}
105
106void UDPPort::OnReadPacket(
107    talk_base::AsyncPacketSocket* socket, const char* data, size_t size,
108    const talk_base::SocketAddress& remote_addr) {
109  ASSERT(socket == socket_);
110  if (Connection* conn = GetConnection(remote_addr)) {
111    conn->OnReadPacket(data, size);
112  } else {
113    Port::OnReadPacket(data, size, remote_addr);
114  }
115}
116
117}  // namespace cricket
118