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https://issues.apache.org/jira/browse/GUACAMOLE-587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16533959#comment-16533959
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Michael Jumper commented on GUACAMOLE-587:
------------------------------------------
{quote}
{code:none}
...
guacd[7]: ERROR: Guacamole protocol violation. Perhaps the version of
guacamole-client is incompatible with this version of libguac?
guacd[7]: DEBUG: Error reading "connect": Instruction parse error
...
{code}
This error results from the {{connect}} instruction (sent to guacd during the
Guacamole protocol handshake) not matching the {{args}} instruction originally
sent by guacd. The Guacamole protocol requires that values for all arguments be
provided, even if blank:
http://guacamole.apache.org/doc/gug/guacamole-protocol.html#guacamole-protocol-handshake
This is independent of the merge of client-side changes for GUACAMOLE-445,
which only affect the user interface. The Guacamole protocol itself already
provides sufficient information via the {{args}} instruction for the client
side to respond with a correct {{connect}} instruction, and
{{ConfiguredGuacamoleSocket}} takes this into account.
> RDP protocol violation
> ----------------------
>
> Key: GUACAMOLE-587
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-587
> Project: Guacamole
> Issue Type: Bug
> Components: guacd
> Affects Versions: 1.0.0
> Reporter: Marc
> Priority: Major
>
> Hi!
> A build (docker) from the git master fails on RDP Connections with this
> message in the log.
> Protocol "rdp" selected. Guacamole protocol violation...
>
> As far as I can tell, something in the merge of "GUACAMOLE-445" introduced
> the problem, as builds prior to that worked fine.
> Do you need more infos or logs?
>
> --Marc
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