UDP通讯

服务端

 public class Udpserver
    {
        public UdpClient udpClient;
        public Thread UdpThread;
        public Udpserver()
        {
            if (udpClient != null)
            {
                UdpThread.Abort();
                udpClient.Close();
            }
            //服务端监听接受数据
            try
            {
                udpClient = new UdpClient(8042);
                UdpThread = new Thread(new ThreadStart(UdpReciveThread));
                UdpThread.Start();
            }
            catch (Exception y)
            {
                udpClient.Close();
                UdpThread.Abort();
            }
        }

        #region 处理事件
        public void UdpReciveThread()
        {
            IPEndPoint poin = new IPEndPoint(IPAddress.Any, 8042);
            while (udpClient != null && Thread.CurrentThread.ThreadState.Equals(ThreadState.Running))
            {
                try
                {
                    byte[] buf = udpClient.Receive(ref poin);
                    string bufs = Encoding.UTF8.GetString(buf);
                    string order = bufs.Split('|')[0].ToString();
                    string sernews = bufs.Split('|')[1].ToString();
                    switch(order)
                    {
                        case "UserLogin"://登陆
                            break;
                        case "UserMove"://移动
                            break;
                        case "UserExit"://退出
                            break;
                        default:
                            break;
                    }
                }
                catch {
                
                }
            }
        }
        #endregion


    }

客户端发送：

 UdpClient uc = new UdpClient("127.0.0.1",8042);
            byte[] sendbuf = Encoding.UTF8.GetBytes("abcd11111");
            uc.Send(sendbuf, sendbuf.Length);