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https://issues.apache.org/jira/browse/SSHD-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16964179#comment-16964179
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Lyor Goldstein commented on SSHD-952:
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{quote}
I believe timeout was introduced to unblock the threads ,in previous versions
if there is no space thread was waiiting and if there is closure due to some
invalid chunk of data from client thread was blocked for ever and now with new
implementation at-least thread gets released after some timeout.
{quote}
I am inclined to agree - examining the GIT log indicates such a change in order
to address SSHD-565
> 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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