[Twisted-Python] Serializing cftp and ssh sessions

[exarkun at twistedmatrix.com]

On 17 Oct, 08:50 am, axel.rau at chaos1.de wrote:
>
>Am 14.10.2014 um 17:07 schrieb Axel Rau <Axel.Rau at chaos1.de>:
>>>We might need more to go on.  Do you have a complete, minimal 
>>>example? (See http://sscce.org/)
>>The attached zip archive
>Did someone could spend the time to look at it?
>Is my goal utopian?

I can't tell if this represents a bug in Twisted or not.  After a quick 
look through the code, I'm not really clear on why the program would 
ever exit (I didn't find the calls to `reactor.stop`, I guess they're 
hidden somewhere in conch "library" code), nor quite which code paths 
you expect to work and which you expect to fail.


What is the expected behavior if I run test.py after editing it to point 
at a host I have access to?

Is that the desired behavior?

If there is a second case, what one edit can I make to observe that 
behavior?  How does the behavior differ from what you're trying to 
achieve?

Separately:

  * You should rewrite this code to not use twisted.conch.client.connect. 
That's some random library code no one ever expected application code to 
use.  It's public, so you can use it if you want, but that's no promise 
it's any good.

  * Use twisted.conch.endpoints.SSHCommandClientEndpoint to perform 
`exec` requests

  * Consider pitching in to complete 
https://twistedmatrix.com/trac/ticket/6617 so you can use the new 
`SSHSubsystemClientEndpoint` API that ticket introduces to set up your 
SFTP connections.

Jean-Paul