Server detection of client crash

Hello,

I'm intending to develop a web-based frontend UI for a control system
in a research lab. For safety purposes, it's vital that when a client
crashes, the server is notified immediately and dispatches a stop
signal to all connected machinery.

I'm new to gwt and would like to know if there is a way to know
whenever a client crashes on the server side, specifically inside a
"RemoteServiceServlet".

Regards,
Michael

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