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https://issues.apache.org/jira/browse/SSHD-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968680#comment-16968680
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Lyor Goldstein commented on SSHD-952:
-------------------------------------
Initial scanning of the code seems to indicate that if there is a timeout
exception then the channel is closed (maybe not the session). I cannot find any
trace of the behavior you mention especially
{quote}
spawning a new thread
{quote}
can you make sure that it isn't your code that is somehow spanning the thread ?
I will still try and think of scenario that might explain what you describe,
but off-hand I do not have a lead yet as to a promising avenue of
investigation. Alternatively, can you perhaps debug the scenario where the
timeout occurs and try to figure out what is going on - since you seem to be
able to reproduce it. Perhaps it will yield more useful information.
> What is the expected behavior of waitForSpace(long millis) method on default
> timeout of 30 seconds
> --------------------------------------------------------------------------------------------------
>
> Key: SSHD-952
> URL: https://issues.apache.org/jira/browse/SSHD-952
> Project: MINA SSHD
> Issue Type: Question
> Affects Versions: 2.2.0
> Reporter: Anudeep
> Priority: Major
>
> Hi Team,
> Can you please let us know the expected behavior of waitForSpace(long millis)
> method of Window.java class . As per our test we see on timeout thread get
> released and it spawns a new thread on timeout. Is this an expected behavior ?
> 2019-10-24 12:33:26,123 DEBUG [org.apache.sshd.server.channel.ChannelSession]
> (Thread-44 (HornetQ-client-global-threads-407809182))
> flush(ChannelOutputStream[ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]]
> SSH_MSG_CHANNEL_DATA) failed (SocketTimeoutException) to wait for space of
> len=1190: waitForCondition(Window[server/remote](ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]))
> timeout exceeded: 20000
> 2019-10-24 12:33:46,126 DEBUG [org.apache.sshd.server.channel.ChannelSession]
> (Thread-44 (HornetQ-client-global-threads-407809182))
> flush(ChannelOutputStream[ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]]
> SSH_MSG_CHANNEL_DATA) failed (SocketTimeoutException) to wait for space of
> len=1190: waitForCondition(Window[server/remote](ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]))
> timeout exceeded: 20000
> 2019-10-24 12:34:06,129 DEBUG [org.apache.sshd.server.channel.ChannelSession]
> (Thread-44 (HornetQ-client-global-threads-407809182))
> flush(ChannelOutputStream[ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]]
> SSH_MSG_CHANNEL_DATA) failed (SocketTimeoutException) to wait for space of
> len=1190: waitForCondition(Window[server/remote](ChannelSession[id=0,
> recipient=43]-ServerSessionImpl[administrator@/141.137.237.205:58628]))
> timeout exceeded: 20000
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