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https://issues.apache.org/jira/browse/SSHD-535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15023929#comment-15023929
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Goldstein Lyor commented on SSHD-535:
-------------------------------------
Seems that a SSH_MSG_CHANNEL_EOF is sent on a channel that is no longer tracked
by the receiving session
> SshException: Received 96 on unknown channel 0
> ----------------------------------------------
>
> Key: SSHD-535
> URL: https://issues.apache.org/jira/browse/SSHD-535
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Matt Kusnierz
>
> Sometimes (but not always) get this exception immediately following closing
> the ChannelSession:
> 2015-07-09 16:17:02,981 WARN [sshd-SshClient[1b15f922]-nio2-thread-4]
> org.apache.sshd.client.session.ClientSessionImpl - Exception caught
> org.apache.sshd.common.SshException: Received 96 on unknown channel 0
> at
> org.apache.sshd.common.session.AbstractConnectionService.getChannel(AbstractConnectionService.java:297)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractConnectionService.channelEof(AbstractConnectionService.java:246)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractConnectionService.process(AbstractConnectionService.java:163)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractSession.doHandleMessage(AbstractSession.java:405)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractSession.handleMessage(AbstractSession.java:301)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.client.session.ClientSessionImpl.handleMessage(ClientSessionImpl.java:265)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:738)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
> ~[sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
> [sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
> [sshd-core-0.13.0.jar:0.13.0]
> at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
> [sshd-core-0.13.0.jar:0.13.0]
> at java.security.AccessController.doPrivileged(Native Method) [na:1.8.0]
> at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
> [sshd-core-0.13.0.jar:0.13.0]
> at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [na:1.8.0]
> at sun.nio.ch.Invoker$2.run(Invoker.java:206) [na:1.8.0]
> at
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
> [na:1.8.0]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0]
> at java.lang.Thread.run(Thread.java:744) [na:1.8.0]
> This sounds similar to SSHD-290, but instead it gets a 96=SSH_MSG_CHANNEL_EOF
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