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https://issues.apache.org/jira/browse/GUACAMOLE-414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16482834#comment-16482834
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Mark Tomich commented on GUACAMOLE-414:
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[~taddeusz], you may be right on that one...I guess I've only tried v0.9.9 and
v0.9.11. Some more detail: I'm able to reproduce this on guacd v0.9.14 linked
against libvncclient v0.9.11, but *not* on remmina and gtkvncviewer (the
example client application bundled with libvncclient) when linked against the
exact same libvncclient.so library. Thus, I'm convinced the problem is in
guacamole-server, and not somewhere else. FYI, an easy (and fun) way to
reproduce the problem is with "lbreakout2" ... the amount of activity really
causes guacd to hangup quickly, whereas it's completely stable with remmina and
gtkvncviewer. I've tried dissecting the code to see where the problem is, but
it seems the main rendering loop is handled quite differently btwn guacd and
the other two.
[~mike.jumper], [~nick.couch...@yahoo.com], I'd love to help however I can.
I've got an easily reproducible case, and my company very much needs this to
work.
> Certain VNC servers result in disconnection due to TLS errors
> -------------------------------------------------------------
>
> Key: GUACAMOLE-414
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-414
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-server, guacd
> Affects Versions: 0.9.13-incubating, 0.9.14
> Environment: unRAID 6.4rc9 Docker container
> Reporter: Jason Bean
> Priority: Minor
>
> Connecting to certain VNC servers such as Ubuntu Desktop (all versions I have
> ever run) and a CentOS based Browser Docker
> ([https://hub.docker.com/r/consol/centos-xfce-vnc/]) cause frequent TLS
> errors and consequently disconnections. The errors in the log are as follows:
> {noformat}
> Oct 12 14:54:59 2004ff6050af guacd[8440]: Error reading from TLS: The TLS
> connection was non-properly terminated..
> Oct 12 14:54:59 2004ff6050af guacd[8440]: read (4: Interrupted system call)
> Oct 12 14:54:59 2004ff6050af guacd[8440]: Error handling message from VNC
> server.
> Oct 12 14:54:59 2004ff6050af guacd[8440]: Internal VNC client disconnected
> {noformat}
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