C#UDP服务器端和客户端连接_c# udp服务端

UDP客户端：

    Socket udpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    IPAddress iPAddress = new IPAddress(new byte[] { 192, 168, 1, 20 });
    IPEndPoint iPEndPoint = new IPEndPoint(iPAddress, 5000);
    byte[] data = Encoding.UTF8.GetBytes("客户端上线了");
    EndPoint EP = (EndPoint)iPEndPoint;
    udpClient.SendTo(data, EP);

UDP服务端：

    Socket udpServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 
    ProtocolType.Udp);
    IPAddress ipAddress = new IPAddress(new byte[] { 192, 168, 1, 20 });
    IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 5000);
    udpServer.Bind(ipEndPoint);
    IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 0);
    EndPoint EP= (EndPoint)ipep;
    byte[] data = new byte[1024];
    int length = udpServer.ReceiveFrom(data, ref EP);
    Console.WriteLine("接收到的数据：" + Encoding.UTF8.GetString(data, 0, length));
    udpServer.Close();