C++ socket::bind方法代码示例

bool STUNClient::createSingleSocket(
  const std::string& stunServer,
  boost::asio::ip::udp::socket& socket,
  const OSS::IPAddress& lAddr,
  OSS::IPAddress& externalAddress)
{
  OSS::mutex_critic_sec_lock globalLock(_csGlobal);

  _test1Responded = false;
  _test2Responded = false;
  _test3Responded = false;
  _test10Responded = false;
  _test1ChangedAddr = OSS::IPAddress();
  _test1MappedAddr = OSS::IPAddress();
  _test10MappedAddr = OSS::IPAddress();
  _sendCount = 0;

  OSS::IPAddress localAddress = lAddr;
  OSS::IPAddress targetAddress = OSS::IPAddress::fromV4IPPort(stunServer.c_str());
  if (!targetAddress.isValid() || !localAddress.isValid())
    return false;

  if (!targetAddress.getPort())
    targetAddress.setPort(STUN_PORT);

  if (!socket.is_open())
  {
    socket.open(boost::asio::ip::udp::v4());
    boost::asio::ip::udp::endpoint ep;

    ep = boost::asio::ip::udp::endpoint(localAddress.address(), localAddress.getPort());
    boost::system::error_code ec;
    socket.bind(ep, ec);
    if (ec)
      return false;
  }

  while (_sendCount < 15)
  {
    _sendCount++;
    if (!_test1Responded)
      sendTestRequest(socket,  targetAddress, 1);
    else
      break;
  }

  if (_test1Responded)
  {
    externalAddress = _test1MappedAddr;
    return externalAddress.isValid();
  }

  return false;
}

 interfaces() {
     memset(data,0,MAX_LINKS*sizeof(struct info));
     memset(buf,0,MAX_BUF);
     lsock.open(boost::asio::ip::udp::v4());
     lsock.bind(boost::asio::ip::udp::endpoint(boost::asio::ip::address::from_string("127.0.0.1"),10000));
     lsock.async_receive(
             boost::asio::buffer(buf,MAX_BUF),
             boost::bind(&interfaces::handle_receive, this,
                 boost::asio::placeholders::error,
                 boost::asio::placeholders::bytes_transferred));
     boost::thread t = boost::thread (boost::bind(&boost::asio::io_service::run, &iol));
 }

	SC_UdpInPort(struct World * world, int inPortNum):
		mWorld(world), mPortNum(inPortNum), udpSocket(ioService)
	{
		using namespace boost::asio;
		BOOST_AUTO(protocol, ip::udp::v4());
		udpSocket.open(protocol);

		udpSocket.bind(ip::udp::endpoint(protocol, inPortNum));

		boost::asio::socket_base::send_buffer_size option(65536);
		udpSocket.set_option(option);

#ifdef USE_RENDEZVOUS
		if (world->mRendezvous) {
			thread thread( boost::bind( PublishPortToRendezvous, kSCRendezvous_UDP, sc_htons(mPortNum) ) );
			mRendezvousThread = std::move(thread);
		}
#endif

		startReceiveUDP();
	}

  receiver(boost::asio::io_service& io_service,
      const boost::asio::ip::address& listen_address,
      const boost::asio::ip::address& multicast_address)
    : socket_(io_service)
  {
    // Create the socket so that multiple may be bound to the same address.
    boost::asio::ip::udp::endpoint listen_endpoint(
        listen_address, multicast_port);
    socket_.open(listen_endpoint.protocol());
    socket_.set_option(boost::asio::ip::udp::socket::reuse_address(true));
    socket_.bind(listen_endpoint);

    // Join the multicast group.
    socket_.set_option(
        boost::asio::ip::multicast::join_group(multicast_address));

    socket_.async_receive_from(
        boost::asio::buffer(data_, max_length), sender_endpoint_,
        boost::bind(&receiver::handle_receive_from, this,
            boost::asio::placeholders::error,
            boost::asio::placeholders::bytes_transferred));
  }

std::string AutohostInterface::TryBindSocket(
			boost::asio::ip::udp::socket& socket,
			const std::string& remoteIP, int remotePort,
			const std::string& localIP, int localPort)
{
	std::string errorMsg = "";

	ip::address localAddr;
	ip::address remoteAddr;
	boost::system::error_code err;
	try {
		socket.open(ip::udp::v6(), err); // test IP v6 support
		const bool supportsIPv6 = !err;

		remoteAddr = netcode::WrapIP(remoteIP, &err);
		if (err) {
			throw std::runtime_error("Failed to parse address " + remoteIP + ": " + err.message());
		}

		if (!supportsIPv6 && remoteAddr.is_v6()) {
			throw std::runtime_error("IP v6 not supported, can not use address " + remoteAddr.to_string());
		}

		if (localIP.empty()) {
			// use the "any" address as local "from"
			if (remoteAddr.is_v6()) {
				localAddr = ip::address_v6::any();
			} else {
				if (supportsIPv6) {
					socket.close();
				}
				socket.open(ip::udp::v4());
				localAddr = ip::address_v4::any();
			}
		} else {
			localAddr = netcode::WrapIP(localIP, &err);
			if (err) {
				throw std::runtime_error("Failed to parse local IP " + localIP + ": " + err.message());
			}
			if (localAddr.is_v6() != remoteAddr.is_v6()) {
				throw std::runtime_error("Local IP " + localAddr.to_string() + " and remote IP " + remoteAddr.to_string() + " are IP v4/v6 mixed");
			}
		}

		socket.bind(ip::udp::endpoint(localAddr, localPort));

		boost::asio::socket_base::non_blocking_io command(true);
		socket.io_control(command);

		// A similar, slighly less verbose message is already in GameServer
		//LogObject() << "[AutohostInterface] Connecting (UDP) to IP "
		//		<<  (remoteAddr.is_v6() ? "(v6)" : "(v4)") << " " << remoteAddr
		//		<< " Port " << remotePort;
		socket.connect(ip::udp::endpoint(remoteAddr, remotePort));
	} catch (std::runtime_error& e) { // includes also boost::system::system_error, as it inherits from runtime_error
		socket.close();
		errorMsg = e.what();
		if (errorMsg.empty()) {
			errorMsg = "Unknown problem";
		}
	}

	return errorMsg;
}