TcpListener myListener = new TcpListener(IPAddress.Any, port);//绑定端口IP信息
 
 myListener.Start();//开始监听

 TcpClient newClient=myListener.AcceptTcpClient();//接受请求

 newClient.Client.IOControl(IOControlCode.KeepAliveValues, KeepAlive(1, 30000, 10000), null);//设置Keep-Alive参数

 private byte[] KeepAlive(int onOff, int keepAliveTime, int keepAliveInterval)
 {
     byte[] buffer = new byte[12];
     BitConverter.GetBytes(onOff).CopyTo(buffer, 0);
     BitConverter.GetBytes(keepAliveTime).CopyTo(buffer, 4);
     BitConverter.GetBytes(keepAliveInterval).CopyTo(buffer, 8);
     return buffer;
  }