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_BASE_ASYNCUDPSOCKET_H_ 29#define TALK_BASE_ASYNCUDPSOCKET_H_ 30 31#include "talk/base/asyncpacketsocket.h" 32#include "talk/base/scoped_ptr.h" 33#include "talk/base/socketfactory.h" 34 35namespace talk_base { 36 37// Provides the ability to receive packets asynchronously. Sends are not 38// buffered since it is acceptable to drop packets under high load. 39class AsyncUDPSocket : public AsyncPacketSocket { 40 public: 41 // Creates a new socket for sending asynchronous UDP packets using an 42 // asynchronous socket from the given factory. 43 static AsyncUDPSocket* Create(SocketFactory* factory, 44 const SocketAddress& address); 45 explicit AsyncUDPSocket(AsyncSocket* socket); 46 virtual ~AsyncUDPSocket(); 47 48 virtual SocketAddress GetLocalAddress(bool* allocated) const; 49 virtual SocketAddress GetRemoteAddress() const; 50 virtual int Send(const void *pv, size_t cb); 51 virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr); 52 virtual int Close(); 53 54 virtual Socket::ConnState GetState() const; 55 virtual int GetOption(Socket::Option opt, int* value); 56 virtual int SetOption(Socket::Option opt, int value); 57 virtual int GetError() const; 58 virtual void SetError(int error); 59 60 private: 61 // Called when the underlying socket is ready to be read from. 62 void OnReadEvent(AsyncSocket* socket); 63 64 scoped_ptr<AsyncSocket> socket_; 65 char* buf_; 66 size_t size_; 67}; 68 69} // namespace talk_base 70 71#endif // TALK_BASE_ASYNCUDPSOCKET_H_ 72