First time i got an error that disconnected me from server... And my code that was written without tests worked perfectly! Reconnected in few seconds. I got an error on first reconnect because my token was not valid. But was fixed by second authorization attempt. Also there is options to restart UI client without turning off the whole application (it will be not closed in process, special background services will work, UI client will be restarted). And an option to restart the whole application.