使用udpclient在一个端口中并发发送和接收数据

在一个端口上绝对可以有两个UdpClient,但是在将它绑定到端点之前需要设置套接字选项.

private static void SendAndReceive()
{
  IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, 1234);
  ThreadPool.QueueUserWorkItem(delegate
  {
    UdpClient receiveClient = new UdpClient();
    receiveClient.ExclusiveAddressUse = false;
    receiveClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
    receiveClient.Client.Bind(ep1);
    byte[] buffer = receiveClient.Receive(ref ep1);
  });

  UdpClient sendClient = new UdpClient();
  sendClient.ExclusiveAddressUse = false;
  sendClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
  IPEndPoint ep2 = new IPEndPoint(IPAddress.Parse("X.Y.Z.W"), 1234);
  sendClient.Client.Bind(ep1);
  sendClient.Send(new byte[] { ... }, sizeOfBuffer, ep2);
}