[ 
https://issues.apache.org/jira/browse/SSHD-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969075#comment-16969075
 ] 

Anudeep commented on SSHD-952:
------------------------------

Hi [~lgoldstein],

We tried in a different manner this time ,instead of blocking the read 
completely we added sleep while reading the data from channel on the client 
side .

This time even after the timeout it was still continuing for some time and got 
exited(channel got closed with an exception after some time). I suppose this 
behavior might be due to sleep which we introduced at client side.
{code:java}
                                                                         
pStatus=0.%A
2019-11-07 05:42:33,149 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
(sshd-SshServer[57e76ebb](port=8345)-nio2-thread-2) 
exceptionCaught(Nio2Session[local=/10.247
.246.52:8345, remote=/192.168.0.42:49984]) caught 
InterruptedByTimeoutException[null] - calling handler
2019-11-07 05:42:33,149 WARN  
[org.apache.sshd.server.session.ServerSessionImpl] 
(sshd-SshServer[57e76ebb](port=8345)-nio2-thread-2) 
exceptionCaught(ServerSessionImpl[a
dministrator@/192.168.0.42:49984])[state=Opened] InterruptedByTimeoutException: 
null
2019-11-07 05:42:33,150 DEBUG 
[org.apache.sshd.server.session.ServerSessionImpl] 
(sshd-SshServer[57e76ebb](port=8345)-nio2-thread-2) 
exceptionCaught(ServerSessionImpl[a
dministrator@/192.168.0.42:49984])[state=Opened] details: 
java.nio.channels.InterruptedByTimeoutException
        at 
sun.nio.ch.UnixAsynchronousSocketChannelImpl$1.run(UnixAsynchronousSocketChannelImpl.java:456)
 [rt.jar:1.8.0_221]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[rt.jar:1.8.0_221]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
[rt.jar:1.8.0_221]
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
 [rt.jar:1.8.0_221]
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
 [rt.jar:1.8.0_221]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
[rt.jar:1.8.0_221]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
[rt.jar:1.8.0_221]
:

{code}


Thanks,
Anudeep

> 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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