Michael Jumper d734bac590 GUACAMOLE-1115: Do not hold general RDP message lock while waiting for print operations.
Holding the message lock will block handling of things like mouse and
keyboard events, as the message lock must be acquired before sending the
corresponding messages to the RDP server. If mouse and keyboard events
are blocked, then handling of further Guacamole instructions like "ack"
is also blocked. If the print job is blocked until an "ack" is received,
this results in deadlock.
2022-03-17 18:35:20 +00:00
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