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
34 namespace cricket {
35
36 const std::string LOCAL_PORT_TYPE("local");
37
UDPPort(talk_base::Thread * thread,talk_base::PacketSocketFactory * factory,talk_base::Network * network,uint32 ip,int min_port,int max_port)38 UDPPort::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
Init()47 bool 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
~UDPPort()58 UDPPort::~UDPPort() {
59 delete socket_;
60 }
61
PrepareAddress()62 void 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
CreateConnection(const Candidate & address,CandidateOrigin origin)72 Connection* 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
SendTo(const void * data,size_t size,const talk_base::SocketAddress & addr,bool payload)82 int 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
SetOption(talk_base::Socket::Option opt,int value)93 int UDPPort::SetOption(talk_base::Socket::Option opt, int value) {
94 return socket_->SetOption(opt, value);
95 }
96
GetError()97 int UDPPort::GetError() {
98 return error_;
99 }
100
OnAddresReady(talk_base::AsyncPacketSocket * socket,const talk_base::SocketAddress & address)101 void UDPPort::OnAddresReady(talk_base::AsyncPacketSocket* socket,
102 const talk_base::SocketAddress& address) {
103 AddAddress(address, "udp", true);
104 }
105
OnReadPacket(talk_base::AsyncPacketSocket * socket,const char * data,size_t size,const talk_base::SocketAddress & remote_addr)106 void 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