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https://issues.apache.org/jira/browse/SSHD-393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14316209#comment-14316209
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Maros Marsalek commented on SSHD-393:
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What is going on with this issue and the pull request that fixes it ?
> Ssh server freezing when under heavy load
> -----------------------------------------
>
> Key: SSHD-393
> URL: https://issues.apache.org/jira/browse/SSHD-393
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 0.12.0, 0.13.0
> Reporter: Maros Marsalek
>
> When using the Ssh server and writing big amounts of data towards the client,
> server can freeze waiting for window adjust msg.
> It always happens after server gets into state of delaying write while
> waiting for window adjust. After the window adjust is received, write is not
> resumed. There is no mechanism to resume the write for server side, but on
> the client side there is.
> We have a junit test case that reproduces this issue. We were able to fix it
> with this patch:
> https://github.com/apache/mina-sshd/pull/10
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