There's currently no way to stop the server you are connected to from the GUI.
Done in r16037.
The ability to shutdown the server through a client request can now also be disabled. This is only configurable via an env var only for now:
XPRA_CLIENT_CAN_SHUTDOWN=0 xpra start ...
@godevilove: please close if that works for you.
Not heard back, closing.
I failed to figure out if I need to apply this patch or if that commit is already in release, sorry.
r16037 is in trunk, for which you can find beta builds here: http://xpra.org/beta. Sorry for not making that clearer.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1540