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From "Robert Varga (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SSHD-840) Unknown commands cause IllegalStateException instead of being correctly handled
Date Fri, 10 Aug 2018 20:57:00 GMT

    [ https://issues.apache.org/jira/browse/SSHD-840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576839#comment-16576839
] 

Robert Varga commented on SSHD-840:
-----------------------------------

Also Karaf 3.0.9 is still widely deployed, hence 0.14.1 would be very appreciated.

> Unknown commands cause IllegalStateException instead of being correctly handled
> -------------------------------------------------------------------------------
>
>                 Key: SSHD-840
>                 URL: https://issues.apache.org/jira/browse/SSHD-840
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 0.14.0, 1.6.0, 2.0.0
>            Reporter: Robert Varga
>            Priority: Major
>             Fix For: 2.0.1
>
>
> As [https://github.com/CESNET/libnetconf2/issues/68] shows, MINA SSHD has a different
behavior than OpenSSH when faced unknowns – in this case coming from a buggy server.
> While OpenSSH was able to establish a session, OpenDaylight (using SSHD 1.6.0) was not
– throwing an IllegalStateException.
> Rather than throwing an exception, send an SSH_MSG_UNIMPLEMENTED as specified by [https://tools.ietf.org/html/rfc4253#section-11.4]
.



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