Guacamole sometimes doesn't show reverse VNC connections

[David Blackstone <jd...@gmail.com>]

I'm trying to configure several reverse VNC connections with Guacamole, but
I'm finding that often when the VNC server connects, Guacamole stays on the
screen that says "Connected to Guacamole. Waiting for response..."
indefinitely.

If I look in syslog it shows that the VNC server and client are
connecting.  It even shows the hostname of the server that is connecting,
so I know it is getting through.  And on the remote system I can see the IP
address of my Guacamole server listed in connected clients.

Also, there is no difference in the logs that I can see between a
successful connection and an unsuccessful connection - it looks to me like
the vnclistener is working but then the HTML5 client is never being
informed that there is a connection to display.

Sometimes it looks like if I kill the session in the active sessions list
the next attempt is more likely to work, but this is unpredictable.

How can I find out what is keeping my reverse VNC sessions from working
100% of the time?

Re: Guacamole sometimes doesn't show reverse VNC connections

[systemreggie <jd...@gmail.com>]

Seeing there was a new release of Guacamole at the start of the year, I
decided to upgrade hoping that perhaps it might fix our problem - and it
did!  Our reverse VNC connections succeed nearly all of the time now.  I'm
not sure what changed, but I offer my thanks for the new release!



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Re: Guacamole sometimes doesn't show reverse VNC connections

[systemreggie <jd...@gmail.com>]

I'm using UltraVNC - does that make any difference?



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Re: Guacamole sometimes doesn't show reverse VNC connections

[systemreggie <jd...@gmail.com>]

I should mention that per the troubleshooting section of the Guacamole user
manual, I am using https to make sure no proxy is buffering the session
data.



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Re: Guacamole sometimes doesn't show reverse VNC connections

[systemreggie <jd...@gmail.com>]

I've still had no luck nailing this issue down.  Is there any way to get the
HTML5 client to be more verbose about what is happening on its end?  Since
the logs show the VNC connection is successful I am assuming that things are
breaking down for the HTML5 end somehow.



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