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https://issues.apache.org/jira/browse/GUACAMOLE-1959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17854432#comment-17854432
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Nick Couchman commented on GUACAMOLE-1959:
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[~ehammer99] I've re-opened this and set it as an improvement for better
logging for missing protocols and shared libraries.
> Improve logging for missing protocols or shared libraries
> ---------------------------------------------------------
>
> Key: GUACAMOLE-1959
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1959
> Project: Guacamole
> Issue Type: Improvement
> Components: guacd
> Affects Versions: 1.5.5
> Reporter: Jason Mac
> Priority: Minor
> Attachments: Guacd_Connection.pcap
>
>
> Just installed natively on Debian. When opening a connection, tomcat9
> displays the error that the connection to guacd timed out.
> I know there is a lot of errors already online around this issue, but the
> port is open and it is NOT using localhost, viewing the logs shows clearly it
> is using 127.0.0.1
> {code:java}
> Jun 11 19:44:09 RemoteDesktop tomcat9[1868]: 19:44:09.745 [Thread-2] INFO
> o.a.g.tunnel.TunnelRequestService - User "guacadmin" disconnected from
> connection "1". Duration: 15013 milliseconds
> Jun 11 19:44:09 RemoteDesktop tomcat9[1868]: 19:44:09.741 [Thread-2] ERROR
> o.a.g.w.GuacamoleWebSocketTunnelEndpoint - Connection to guacd terminated
> abnormally: Connection to guacd timed out.
> Jun 11 19:43:54 RemoteDesktop tomcat9[1868]: 19:43:54.724
> [http-nio-8080-exec-8] INFO o.a.g.tunnel.TunnelRequestService - User
> "guacadmin" connected to connection "1".
> Jun 11 19:43:54 RemoteDesktop guacd[1953]: Connection ID is
> "$a33c5043-7a18-42dd-b74c-472e23e99bb8"
> Jun 11 19:43:54 RemoteDesktop guacd[1953]: Creating new client for protocol
> "rdp"
> Jun 11 19:43:45 RemoteDesktop guacd[1953]: Listening on host 127.0.0.1, port
> 4822
> Jun 11 19:43:45 RemoteDesktop guacd[1949]: SUCCESS
> Jun 11 19:43:45 RemoteDesktop guacd[1951]: guacd[1951]: INFO:
> Guacamole proxy daemon (guacd) version 1.5.5 started
> Jun 11 19:43:45 RemoteDesktop guacd[1949]: Starting guacd:
> Jun 11 19:43:45 RemoteDesktop guacd[1951]: Guacamole proxy daemon (guacd)
> version 1.5.5 started
> {code}
> When placing guacd into debug mode via /etc/guacamole/guacd.conf there is
> ZERO debug messages during the connection attempt.
>
> Conducting a packet capture on loopback, there is an entire TCP connection
> happening, about 13 packets, before the error occurs.
> Clearly something else is going on, as the connection did not time out, the
> pcap shows it connected just fine.
> The RDP connection is open, and from a terminal on the guacamole server I can
> easily netcat to the windows machine.
>
> Attached is the PCAP for the connection to guacd. Packet #12 has "ready" in
> the payload, so I am unsure if that means the problem is not with guacd?
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