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https://issues.apache.org/jira/browse/GUACAMOLE-435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16351569#comment-16351569
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Nick Couchman commented on GUACAMOLE-435:
-----------------------------------------
What version of libssh2 did you compile guacd against?
> SSH handshake failing
> ---------------------
>
> Key: GUACAMOLE-435
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-435
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-docker
> Affects Versions: 0.9.13-incubating
> Reporter: Jimmy Chen
> Priority: Minor
>
> After creating SSH connection configuration to a FreeBSD system, when
> attempting to access it via Guacamole, it fails to connect. Looking further
> into the errors being logged. This is shown.
> Guacamole
> {noformat}
> Exception in thread "Thread-65" java.lang.IllegalStateException: Message will
> not be sent because the WebSocket session has been closed
> at
> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:381)
> at
> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:338)
> at
> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$TextMessageSendHandler.write(WsRemoteEndpointImplBase.java:730)
> at
> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendPartialString(WsRemoteEndpointImplBase.java:250)
> at
> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendString(WsRemoteEndpointImplBase.java:193)
> at
> org.apache.tomcat.websocket.WsRemoteEndpointBasic.sendText(WsRemoteEndpointBasic.java:37)
> at
> org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$2.run(GuacamoleWebSocketTunnelEndpoint.java:167)
> {noformat}
> guacd
> {noformat}
> guacd[1]: INFO: Connection ID is "$47806483-cb6f-496a-9a14-89f3843280ee"
> guacd[49]: INFO: Current locale does not use UTF-8. Some characters
> may not render correctly.
> guacd[49]: INFO: User "@757f0e46-b2c8-4674-8275-0bc184575ece" joined
> connection "$47806483-cb6f-496a-9a14-89f3843280ee" (1 users now present)
> guacd[49]: ERROR: SSH handshake failed.
> guacd[49]: INFO: User "@757f0e46-b2c8-4674-8275-0bc184575ece"
> disconnected (0 users remain)
> {noformat}
> Opening a SSH session to the same system via Putty works perfectly, so it
> seems like something about guacd is preventing from successful handshake.
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