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_P2P_BASE_UDPPORT_H_ 29 #define TALK_P2P_BASE_UDPPORT_H_ 30 31 #include <string> 32 33 #include "talk/p2p/base/port.h" 34 35 namespace talk_base { 36 class Thread; 37 class Network; 38 class SocketAddress; 39 } 40 41 namespace cricket { 42 43 extern const std::string LOCAL_PORT_TYPE; // type of UDP ports 44 45 // Communicates using a local UDP port. 46 class UDPPort : public Port { 47 public: Create(talk_base::Thread * thread,talk_base::PacketSocketFactory * factory,talk_base::Network * network,uint32 ip,int min_port,int max_port)48 static UDPPort* Create(talk_base::Thread* thread, 49 talk_base::PacketSocketFactory* factory, 50 talk_base::Network* network, 51 uint32 ip, int min_port, int max_port) { 52 UDPPort* port = new UDPPort(thread, factory, network, 53 ip, min_port, max_port); 54 if (!port->Init()) { 55 delete port; 56 port = NULL; 57 } 58 return port; 59 } 60 virtual ~UDPPort(); 61 62 virtual void PrepareAddress(); 63 virtual Connection* CreateConnection(const Candidate& address, 64 CandidateOrigin origin); 65 66 virtual int SetOption(talk_base::Socket::Option opt, int value); 67 virtual int GetError(); 68 69 protected: 70 UDPPort(talk_base::Thread* thread, talk_base::PacketSocketFactory* factory, 71 talk_base::Network* network, uint32 ip, int min_port, int max_port); 72 bool Init(); 73 74 // Handles sending using the local UDP socket. 75 virtual int SendTo(const void* data, size_t size, 76 const talk_base::SocketAddress& remote_addr, bool payload); 77 78 void OnAddresReady(talk_base::AsyncPacketSocket* socket, 79 const talk_base::SocketAddress& address); 80 81 // Dispatches the given packet to the port or connection as appropriate. 82 void OnReadPacket(talk_base::AsyncPacketSocket* socket, 83 const char* data, size_t size, 84 const talk_base::SocketAddress& remote_addr); 85 86 private: 87 talk_base::AsyncPacketSocket* socket_; 88 int error_; 89 }; 90 91 } // namespace cricket 92 93 #endif // TALK_P2P_BASE_UDPPORT_H_ 94