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https://issues.apache.org/jira/browse/GUACAMOLE-2183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18044135#comment-18044135
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Nick Couchman commented on GUACAMOLE-2183:
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[~klausf] A couple of things:
* For the moment, I'd suggest the work-around of disabling the resize support
in VNC on those connections.
* The Catalina output is not going to be much help - it's likely that guacd is
crashing, so if you can provide the guacd logs, that would be more useful.
I'm looking around to see if we've already got a fix in for this issue, as it
sounds familiar to me, like something we may have already patched.
> guacd crashes when you move or resize the browser window
> --------------------------------------------------------
>
> Key: GUACAMOLE-2183
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-2183
> Project: Guacamole
> Issue Type: Bug
> Components: guacd
> Affects Versions: 1.6.0
> Environment: Ubuntu 22.04.5 LTS
> Reporter: Klaus Fuerstberger
> Priority: Minor
>
> The client is connected via Guacamole VNC via ThightVNC. No special settings
> were made in the connection.
> 3 monitors are connected to the target host.
> As soon as the client moves the browser window after connecting or changes
> the size, an extremely large number of connection attempts are made in a
> single second. If you continue like this, guacd will crash at some point.
> The following is logged in catalina.out:
> {code:java}
> [2025-12-04 12:53:44] [info] 12:53:44.777 [http-nio-127.0.0.1-8080-exec-6]
> INFO o.a.g.tunnel.TunnelRequestService - Use
> r "cobwah2" connected to connection "499".
> [2025-12-04 12:57:25] [info] 12:57:25.629 [http-nio-127.0.0.1-8080-exec-3]
> INFO o.a.g.tunnel.TunnelRequestService - Use
> r "cobwah2" connected to connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.071 [http-nio-127.0.0.1-8080-exec-5]
> INFO o.a.g.tunnel.TunnelRequestService - Use
> r "cobwah2" connected to connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.156 [http-nio-127.0.0.1-8080-exec-7]
> INFO o.a.g.tunnel.TunnelRequestService - User "cobwah2" connected to
> connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.248 [http-nio-127.0.0.1-8080-exec-1]
> INFO o.a.g.tunnel.TunnelRequestService - User "cobwah2" connected to
> connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.296 [http-nio-127.0.0.1-8080-exec-8]
> INFO o.a.g.tunnel.TunnelRequestService - User "cobwah2" connected to
> connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.354 [http-nio-127.0.0.1-8080-exec-9]
> INFO o.a.g.tunnel.TunnelRequestService - User "cobwah2" connected to
> connection "499".
> [2025-12-04 12:57:29] [info] 12:57:29.422 [http-nio-127.0.0.1-8080-exec-1]
> INFO o.a.g.tunnel.TunnelRequestService - User "cobwah2" connected to
> connection "499".
> ...{code}
>
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