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https://issues.apache.org/jira/browse/SSHD-178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guillaume Nodet updated SSHD-178:
---------------------------------

    Summary: Possible deadlock in client when getting SSH_MSG_DISCONNECT on 
invalid channel  (was: client lockup when getting SSH_MSG_DISCONNECT on invalid 
channel)
    
> Possible deadlock in client when getting SSH_MSG_DISCONNECT on invalid channel
> ------------------------------------------------------------------------------
>
>                 Key: SSHD-178
>                 URL: https://issues.apache.org/jira/browse/SSHD-178
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>         Environment: java version "1.7.0_05"
> OpenJDK Runtime Environment (IcedTea7 2.2.1) (Gentoo build 1.7.0_05-b21)
> OpenJDK 64-Bit Server VM (build 23.0-b21, mixed mode)
>            Reporter: Alon Bar-Lev
>
> In some cases the channel closes before the last message is sent (or so I 
> understand from the log)
> I can reproduce this easily when running very short commands.
> ---
> 6265 [NioProcessor-20] INFO org.apache.sshd.client.channel.ChannelExec - Send 
> SSH_MSG_CHANNEL_REQUEST exec
> 6373 [NioProcessor-20] INFO org.apache.sshd.client.channel.ChannelExec - 
> Received SSH_MSG_CHANNEL_REQUEST on channel 0
> 6374 [main] INFO org.apache.sshd.client.channel.ChannelExec - Send 
> SSH_MSG_CHANNEL_OPEN on channel 1
> 7374 [NioProcessor-20] INFO org.apache.sshd.client.session.ClientSessionImpl 
> - Received SSH_MSG_DISCONNECT (reason=2, msg=Received data for nonexistent 
> channel 0.)
> ---
> When getting this SSH_MSG_DISCONNECT message the client is timed out waiting 
> for CLOSED/EOF.
> Not sure where the problem is, but it seems like the client is closed and the 
> program is not notified, or the message on the closed channel alter the 
> behaviour.
> If add some debug messages it happens less frequent, so  I guess this is 
> race/synchronization issue.
> I will happy to provide any additional required information.

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