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https://issues.apache.org/jira/browse/SSHD-812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16444550#comment-16444550
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Goldstein Lyor commented on SSHD-812:
-------------------------------------
[~gnt] great work - I am getting though quite frequent intermittent test
failures when running it via the Netty I/O factory. The strange thing is this.
If I run {{mvn clean install}} only on the _sshd-sftp_ artifact it is usually
successful. However, if it runs as part of a general {{mvn clean install}} it
fails much more often - and always when run with the Netty I/O factory. I
cannot tell if this is because of the Netty factory or the async. mode. I am
inclined to believe some kind of race condition, but cannot put my finger on it
yet - like I said, it is intermittent, but if running {{mvn clean install
-Ptest-netty}} on _sshf-sftp_ it seems to fail most frequently.
> support asynchronous mode for sftp subsystem
> --------------------------------------------
>
> Key: SSHD-812
> URL: https://issues.apache.org/jira/browse/SSHD-812
> Project: MINA SSHD
> Issue Type: New Feature
> Affects Versions: 1.7.0
> Environment: java1.8, linux
> Reporter: Zhenliang Su
> Assignee: Guillaume Nodet
> Priority: Minor
> Labels: asynchronous, sftp
> Fix For: 2.0.0
>
> Attachments: Main.java, doRead.png
>
>
> I used SSHD as a middleman between client and target sftp server.
> I found that, when filezilla client directly connect to the target sftp
> server, it transfers fast. When filezilla client connect to the middleman, it
> transfers slow.
> I analyzed the source code of
> org.apache.sshd.server.subsystem.sftp.SftpSubsystem#doRead, and I found it
> behaves like block mode, and client's other SSH_FXP_READ request blocked in
> the same thread.
>
> my middleman code:
> [^Main.java]
>
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