On Tuesday, January 21, 2020, 7:03:18 PM GMT+1, Mike Jumper 
<[email protected]> wrote: >> Do you see any warnings in your Tomcat logs from 
Guacamole regarding WebSocket not being used? I think the WebSocket URLs here 
> may need to be "wss://", not "ws://".
Nice catch! 

With ws://:
[https-openssl-apr-8443-exec-8] INFO  
o.a.g.t.h.RestrictedGuacamoleHTTPTunnelServlet - Using HTTP tunnel (not 
WebSocket). Performance may be sub-optimal.

With wss://:
# grep -i websocket /var/log/tomcat-9-hman/catalina.*
[main] INFO  o.a.g.t.w.WebSocketTunnelModule - Loading JSR-356 WebSocket 
support...
[main] DEBUG o.a.guacamole.tunnel.TunnelModule - WebSocket module loaded: 
org.apache.guacamole.tunnel.websocket.WebSocketTunnelModule
[https-openssl-apr-8443-exec-10] DEBUG o.a.g.w.GuacamoleWebSocketTunnelEndpoint 
- Connection to guacd closed.

Thanks,
Vieri
  

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