1/* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#include "webrtc/base/asyncudpsocket.h" 12#include "webrtc/base/logging.h" 13 14namespace rtc { 15 16static const int BUF_SIZE = 64 * 1024; 17 18AsyncUDPSocket* AsyncUDPSocket::Create( 19 AsyncSocket* socket, 20 const SocketAddress& bind_address) { 21 scoped_ptr<AsyncSocket> owned_socket(socket); 22 if (socket->Bind(bind_address) < 0) { 23 LOG(LS_ERROR) << "Bind() failed with error " << socket->GetError(); 24 return NULL; 25 } 26 return new AsyncUDPSocket(owned_socket.release()); 27} 28 29AsyncUDPSocket* AsyncUDPSocket::Create(SocketFactory* factory, 30 const SocketAddress& bind_address) { 31 AsyncSocket* socket = 32 factory->CreateAsyncSocket(bind_address.family(), SOCK_DGRAM); 33 if (!socket) 34 return NULL; 35 return Create(socket, bind_address); 36} 37 38AsyncUDPSocket::AsyncUDPSocket(AsyncSocket* socket) 39 : socket_(socket) { 40 ASSERT(socket_); 41 size_ = BUF_SIZE; 42 buf_ = new char[size_]; 43 44 // The socket should start out readable but not writable. 45 socket_->SignalReadEvent.connect(this, &AsyncUDPSocket::OnReadEvent); 46 socket_->SignalWriteEvent.connect(this, &AsyncUDPSocket::OnWriteEvent); 47} 48 49AsyncUDPSocket::~AsyncUDPSocket() { 50 delete [] buf_; 51} 52 53SocketAddress AsyncUDPSocket::GetLocalAddress() const { 54 return socket_->GetLocalAddress(); 55} 56 57SocketAddress AsyncUDPSocket::GetRemoteAddress() const { 58 return socket_->GetRemoteAddress(); 59} 60 61int AsyncUDPSocket::Send(const void *pv, size_t cb, 62 const rtc::PacketOptions& options) { 63 return socket_->Send(pv, cb); 64} 65 66int AsyncUDPSocket::SendTo(const void *pv, size_t cb, 67 const SocketAddress& addr, 68 const rtc::PacketOptions& options) { 69 return socket_->SendTo(pv, cb, addr); 70} 71 72int AsyncUDPSocket::Close() { 73 return socket_->Close(); 74} 75 76AsyncUDPSocket::State AsyncUDPSocket::GetState() const { 77 return STATE_BOUND; 78} 79 80int AsyncUDPSocket::GetOption(Socket::Option opt, int* value) { 81 return socket_->GetOption(opt, value); 82} 83 84int AsyncUDPSocket::SetOption(Socket::Option opt, int value) { 85 return socket_->SetOption(opt, value); 86} 87 88int AsyncUDPSocket::GetError() const { 89 return socket_->GetError(); 90} 91 92void AsyncUDPSocket::SetError(int error) { 93 return socket_->SetError(error); 94} 95 96void AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) { 97 ASSERT(socket_.get() == socket); 98 99 SocketAddress remote_addr; 100 int len = socket_->RecvFrom(buf_, size_, &remote_addr); 101 if (len < 0) { 102 // An error here typically means we got an ICMP error in response to our 103 // send datagram, indicating the remote address was unreachable. 104 // When doing ICE, this kind of thing will often happen. 105 // TODO: Do something better like forwarding the error to the user. 106 SocketAddress local_addr = socket_->GetLocalAddress(); 107 LOG(LS_INFO) << "AsyncUDPSocket[" << local_addr.ToSensitiveString() << "] " 108 << "receive failed with error " << socket_->GetError(); 109 return; 110 } 111 112 // TODO: Make sure that we got all of the packet. 113 // If we did not, then we should resize our buffer to be large enough. 114 SignalReadPacket(this, buf_, static_cast<size_t>(len), remote_addr, 115 CreatePacketTime(0)); 116} 117 118void AsyncUDPSocket::OnWriteEvent(AsyncSocket* socket) { 119 SignalReadyToSend(this); 120} 121 122} // namespace rtc 123