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From "Goldstein Lyor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SSHD-812) support asynchronous mode for sftp subsystem
Date Wed, 11 Apr 2018 10:26:00 GMT

    [ https://issues.apache.org/jira/browse/SSHD-812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433699#comment-16433699

Goldstein Lyor commented on SSHD-812:

Hi [~gnt], see the PR I published with my suggested code changes - I would appreciate your
comments. No hurry, but I would prefer some feedback until Mon. 16-Apr. since if it is acceptable
I will write an asynchronous (experimental) implementation based on this and publish it as


> 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: Goldstein Lyor
>            Priority: Minor
>              Labels: asynchronous, sftp
>         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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