Certain SSH clients cause unhandled errors

[Charles]

Certain SSH clients such as WinSCP cause the following error:

        Traceback (most recent call last):
          File "/usr/local/lib/python2.5/site-packages/twisted/python/log.py", line 36, in callWithContext
            return context.call({ILogContext: newCtx}, func, *args, **kw)
          File "/usr/local/lib/python2.5/site-packages/twisted/python/context.py", line 59, in callWithContext
            return self.currentContext().callWithContext(ctx, func, *args, **kw)
          File "/usr/local/lib/python2.5/site-packages/twisted/python/context.py", line 37, in callWithContext
            return func(*args,**kw)
          File "/usr/local/lib/python2.5/site-packages/twisted/conch/ssh/channel.py", line 137, in requestReceived
            return f(data)
        --- <exception caught here> ---
          File "/usr/local/lib/python2.5/site-packages/twisted/conch/ssh/session.py", line 51, in request_shell
            self.session.openShell(pp)
          File "/usr/local/lib/python2.5/site-packages/twisted/conch/manhole_ssh.py", line 74, in openShell
            self.width, self.height)
        exceptions.AttributeError: TerminalSession instance has no attribute 'width'

[Duncan McGreggor (oubiwann)]

Hrm. I'm at a loss with this one. Are there any other SSH clients that do this besides WinSCP?

[Duncan McGreggor (oubiwann)]

Charles, I don't have a Windows machine handy to test this on, however, if you can provide more details, I might be able to offer you suggestions for applying a fix. However, what I need to know from you in order to do this is the exact set of steps you need to do in order to duplicate this problem.

Thanks!

[Charles (ckaminski)]

Hi Duncan,
There's not much to it. Just try and connect using WinSCP. Our intent was
to write a controlling application to automate the load balancer. If you
don't have a windows machine you might be out of luck on recreating.

We found it easier to just patch some of the HTML interfaces to do what we
want. If memory serves, I may have posted some of the changes so that we
could read in the current state of the load balancer.

-CK

On Fri, Oct 3, 2008 at 8:29 PM, Duncan McGreggor <email address hidden> wrote:

> Charles, I don't have a Windows machine handy to test this on, however,
> if you can provide more details, I might be able to offer you
> suggestions for applying a fix. However, what I need to know from you in
> order to do this is the exact set of steps you need to do in order to
> duplicate this problem.
>
> Thanks!
>
> --
> Certain SSH clients cause unhandled errors
> https://bugs.launchpad.net/bugs/257369
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in txLoadBalancer: A Twisted-Based TCP Load Balancer: New
>
> Bug description:
> Certain SSH clients such as WinSCP cause the following error:
>
> Traceback (most recent call last):
> File
> "/usr/local/lib/python2.5/site-packages/twisted/python/log.py", line 36, in
> callWithContext
> return context.call({ILogContext: newCtx}, func, *args, **kw)
> File
> "/usr/local/lib/python2.5/site-packages/twisted/python/context.py", line 59,
> in callWithContext
> return self.currentContext().callWithContext(ctx, func, *args,
> **kw)
> File
> "/usr/local/lib/python2.5/site-packages/twisted/python/context.py", line 37,
> in callWithContext
> return func(*args,**kw)
> File
> "/usr/local/lib/python2.5/site-packages/twisted/conch/ssh/channel.py", line
> 137, in requestReceived
> return f(data)
> --- <exception caught here> ---
> File
> "/usr/local/lib/python2.5/site-packages/twisted/conch/ssh/session.py", line
> 51, in request_shell
> self.session.openShell(pp)
> File
> "/usr/local/lib/python2.5/site-packages/twisted/conch/manhole_ssh.py", line
> 74, in openShell
> self.width, self.height)
> exceptions.AttributeError: TerminalSession instance has no attribute
> 'width'
>