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https://issues.apache.org/jira/browse/SSHD-840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16577097#comment-16577097
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Goldstein Lyor commented on SSHD-840:
-------------------------------------
[~nite] thanks for the patch - merged in [with
acknowledgement|https://github.com/apache/mina-sshd/commit/4c12a21977714ab8d3f454d52c43be93a773f50f]
- please close the PR. As far as backporting it to previous versions, we don't
really do that since it is too much of an overhead to manage more than one
release. Of course you can always fetch the relevant code according to its GIT
tag, patch it and create a new version just for you (not ideal, I admit, but
best solution I can think of for now). As far as 0.14.1 is concerned I doubt
even more we will back-patch it since it is so old.
> 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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