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https://issues.apache.org/jira/browse/SSHD-827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510697#comment-16510697
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ASF GitHub Bot commented on SSHD-827:
-------------------------------------
Github user janwaros closed the pull request at:
https://github.com/apache/mina-sshd/pull/59
> Dynamic port forwarding server closes session after first unsuccessful
> connection
> ---------------------------------------------------------------------------------
>
> Key: SSHD-827
> URL: https://issues.apache.org/jira/browse/SSHD-827
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 1.6.0, 1.7.0, 2.0.0
> Reporter: Jaroslaw Koscinski
> Priority: Major
> Fix For: 2.1.0
>
> Attachments: close_immedietely.patch
>
>
> After first unsuccessful connection attempt through proxy dynamic port
> forwarding socket gets closed. How to reproduce:
> # Setup dynamic port forwarding
> # Try connecting to unreachable host through proxy
> The reason for this is because sshd tries to do graceful channel close on
> channel that hasn't been opened. After unsuccessful attempt to open forwading
> channel to unreachable host sshd sends SSH_MSG_CHANNEL_CLOSE to which SSH
> server responds with error and the whole session is going down (tested with
> SSH-2.0-OpenSSH_5.3).
> I've attached a patch with fix proposal. In my case that fixed the issue.
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