Robert Varga created SSHD-840:
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Summary: 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: 1.6.0
Reporter: Robert Varga
Fix For: 2.0.0
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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