ما هو الخطأ في الكود ?

The code is:

Socket serialPort1 = new Socket(AddressFamily.InterNetwork, 
                                  SocketType.Stream, ProtocolType.Tcp);

System.Net.IPAddress     LocalIPAddress = System.Net.IPAddress.Parse("127.0.0.1");

System.Net.IPEndPoint   LocalEndPoint = new System.Net.IPEndPoint( LocalIPAddress,80 );

serialPort1.Connect(LocalEndPoint);

serialPort1.Blocking  = false;

serialPort1.Shutdown(SocketShutdown.Both);

serialPort1.Close();

thanks.