public void launchChen(Client clientChen)
        {
            ChenillardReply CR = new ChenillardReply();

            Led1 = clientChen.led1;
            Led2 = clientChen.led2;
            Led3 = clientChen.led3;
            Led4 = clientChen.led4;
            CR.stateChenillard = clientChen.stateChenillard;
            CR.speed           = clientChen.speed;
            if (clientChen.stateChenillard == "start")
            {
                isActive = true;
                //speed = clientChen.speed;
                arrayLed = new string[] { Led1, Led2, Led3, Led4 };
                ThreadStart thread     = new ThreadStart(goChen);
                Thread      threadChen = new Thread(thread);
                if (!threadChen.IsAlive)
                {
                    threadChen.Start();
                }
            }
            if (clientChen.stateChenillard == "stop")
            {
                isActive = false;
            }
        }
        public void changeSpeed(Client clientChen)
        {
            ChenillardReply CR = new ChenillardReply();

            speed = clientChen.speed;
        }