public static void Main(string[] args) { IPAddress ip = IPAddress.Parse("127.0.0.1"); TcpListener serverSocket = new TcpListener(ip, 6789); //TcpListener serverSocket = new TcpListener(6789); serverSocket.Start(); while (true) { TcpClient connectionSocket = serverSocket.AcceptTcpClient(); Console.WriteLine("Server activated now"); EchoService service = new EchoService(connectionSocket); Thread myThread = new Thread(new ThreadStart(service.DoIt)); myThread.Start(); } serverSocket.Stop(); }