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Posted to dev@mina.apache.org by "Zhenliang Su (JIRA)" <ji...@apache.org> on 2018/03/27 08:19:00 UTC

[jira] [Created] (SSHD-812) support asynchronization mode for sftp subsystem

Zhenliang Su created SSHD-812:
---------------------------------

             Summary: support asynchronization 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
         Attachments: Main.java

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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