public WebServerFrontend(int port, WebServerAnswerDelegate answerDelegate)
        {
            this._port           = port;
            this._answerDelegate = answerDelegate;
            this._myListener     = new TcpListener(IPAddress.Loopback, _port);

            this._myListener.Start();

            Thread th = new Thread(StartListen);

            th.IsBackground = true;
            th.Start();
        }
        public WebServerFrontend(int port, WebServerAnswerDelegate answerDelegate)
        {
            this._port           = port;
            this._answerDelegate = answerDelegate;
            this._myListener     = new TcpListener(IPAddress.Loopback, _port);

            this._myListener.Start();

            Thread th = new Thread(StartListen);

            th.IsBackground = true;
            th.Start();
        }