Alon Bar-Lev created SSHD-178:
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Summary: client lockup 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.
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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.)
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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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