asyncudpsocket.cc revision f74420b3285b9fe04a7e00aa3b8c0ab07ea344bc
1f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch/* 2f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * libjingle 3f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * Copyright 2004--2005, Google Inc. 4f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 5f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * Redistribution and use in source and binary forms, with or without 6f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * modification, are permitted provided that the following conditions are met: 7f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 8f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 1. Redistributions of source code must retain the above copyright notice, 9f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * this list of conditions and the following disclaimer. 10f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 2. Redistributions in binary form must reproduce the above copyright notice, 11f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * this list of conditions and the following disclaimer in the documentation 12f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * and/or other materials provided with the distribution. 13f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 3. The name of the author may not be used to endorse or promote products 14f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * derived from this software without specific prior written permission. 15f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * 16f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch */ 27f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 28f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#if defined(_MSC_VER) && _MSC_VER < 1300 29f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#pragma warning(disable:4786) 30f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#endif 31f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 32f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#include "talk/base/asyncudpsocket.h" 33f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch#include "talk/base/logging.h" 34f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 35f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochnamespace talk_base { 36f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 37f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochconst int BUF_SIZE = 64 * 1024; 38f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 39f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen MurdochAsyncUDPSocket::AsyncUDPSocket(AsyncSocket* socket) 40f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch : AsyncPacketSocket(socket) { 41f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch ASSERT(socket_ != NULL); 42f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch size_ = BUF_SIZE; 43f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch buf_ = new char[size_]; 44f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 45f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // The socket should start out readable but not writable. 46f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch socket_->SignalReadEvent.connect(this, &AsyncUDPSocket::OnReadEvent); 47f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch} 48f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 49f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen MurdochAsyncUDPSocket::~AsyncUDPSocket() { 50f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch delete [] buf_; 51f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch} 52f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 53f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdochvoid AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) { 54f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch ASSERT(socket == socket_); 55f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 56f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch SocketAddress remote_addr; 57f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch int len = socket_->RecvFrom(buf_, size_, &remote_addr); 58f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch if (len < 0) { 59f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // An error here typically means we got an ICMP error in response to our 60f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // send datagram, indicating the remote address was unreachable. 61f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // When doing ICE, this kind of thing will often happen. 62f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // TODO(juberti): Do something better like forwarding the error to the user. 63f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch SocketAddress local_addr = socket_->GetLocalAddress(); 64f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch LOG(LS_INFO) << "AsyncUDPSocket[" << local_addr.ToString() << "] " 65f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch << "receive failed with error " << socket_->GetError(); 66f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch return; 67f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch } 68f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 69f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // TODO(juberti): Make sure that we got all of the packet. 70f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch // If we did not, then we should resize our buffer to be large enough. 71f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch SignalReadPacket(buf_, (size_t)len, remote_addr, this); 72f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch} 73f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch 74f74420b3285b9fe04a7e00aa3b8c0ab07ea344bcBen Murdoch} // namespace talk_base 75