bool _rebootCamera()
        {
            bool ret   = false;
            int  count = 0;

            //get logsytem
            var    prop_logsystem = testingInfo.GetType().GetProperty("logSystem");
            string log_value      = (string)prop_logsystem.GetValue(testingInfo);

            //reboot camera
            log_value += string.Format("\n-------------------------------\n");
            log_value += string.Format("{0}, reboot camera\n", DateTime.Now);
            prop_logsystem.SetValue(testingInfo, log_value);
            count = 0;
RE_REBOOT:
            count++;
            ret = camera.rebootViaUboot();
            if (!ret)
            {
                if (count < 3)
                {
                    goto RE_REBOOT;
                }
            }

            return(ret);
        }