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Posted to dev@mina.apache.org by "Guillaume Nodet (JIRA)" <ji...@apache.org> on 2013/07/22 21:04:49 UTC

[jira] [Resolved] (SSHD-188) Session timeout doesn't call destroy() from InvertedShell

     [ https://issues.apache.org/jira/browse/SSHD-188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guillaume Nodet resolved SSHD-188.
----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.9.0
         Assignee: Guillaume Nodet
    
> Session timeout doesn't call destroy() from InvertedShell
> ---------------------------------------------------------
>
>                 Key: SSHD-188
>                 URL: https://issues.apache.org/jira/browse/SSHD-188
>             Project: MINA SSHD
>          Issue Type: Bug
>         Environment: Windows, Linux
>            Reporter: Maarten Smit
>            Assignee: Guillaume Nodet
>              Labels: close, destroy,, idle,, shell, timeout,
>             Fix For: 0.9.0
>
>
> When creating the ssh server I have this:
> sshd.setShellFactory(new PseudoTerminalFactory("/system/bin/sh", "-i"));
> The PseudoTerminalFactory has this:
>     @Override
>     public Command create() {
>         return new InvertedShellWrapper(new PseudoTerminal());
>     }
> And the "PseudoTerminal implements InvertedShell" contains the following
> functions:
> destroy()
> exitValue()
> getErrorStream()
> getInputStream()
> getOutputStream()
> isAlive()
> start(Map<String, String> env)
> Now here is the thing, when a session is created and the user:
> - closes it
> - or the server is stopped
> The destroy and exitValue functions are being called. In the destroy
> function we stop the shell process (which is started in the start function).
> However, if a user has a shell connection and doesn't do anything, default
> after 10 minutes the idletimeout will have passed and the user gets a
> timeout error and gets disconnected. HOWEVER, after that the destroy and
> exitValue are never called, so the isAlive function will continue being
> called (always returns true till the destroy function is called) and we
> will have an endless running thread.
> Next time we start the server we get an error the port is in use, etc. And
> all the time the checking of isAlive of that session will just continue.

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