[X2Go-Dev] Mac Client status

[Mike Gabriel]

Hi John,

On Di 06 Mär 2012 23:20:54 CET "John A. Sullivan III" wrote:

> On Tue, 2012-03-06 at 23:12 +0100, Mike Gabriel wrote:
>> Hi John,
>>
>> On Di 06 Mär 2012 23:00:35 CET "John A. Sullivan III" wrote:
>>
>> > On Tue, 2012-03-06 at 22:55 +0100, Mike Gabriel wrote:
>> >> Hi guys,
>> >>
>> >> On Di 06 Mär 2012 18:48:12 CET "John A. Sullivan III" wrote:
>> >>
>> >> > On Tue, 2012-03-06 at 18:21 +0100, Mihai Moldovan wrote:
>> >> >> - sometimes, I have to resume a session, restart the client,
>> >> >> suspend the session
>> >> >> and resume it again for it to be usable (first time resuming will
>> >> >> just close the
>> >> >> connection to the server), BUT IIRC this happens on Linux, too,
>> >> so I can't
>> >> >> actually blame the OS X part... (plus, it only happens sometimes. :()
>> >>
>> >> > <snip>
>> >> > I have noticed that problem in Linux.  I think it is an SSH timing
>> >> > issue.  The connecting, suspending, reconnecting is not actually doing
>> >> > anything, I believe, except functioning as a rudimentary clock.  If one
>> >> > just waits five minutes after being abruptly disconnected, all
>> >> > reconnects fine :( - John
>> >>
>> >> When writing the connection/tunneling code of python-x2go I observed
>> >> something similar. The problem with port forwarding requests (both
>> >> reverse or non-reverse) is a situation when (after suspend) the ports
>> >> do no get closed properly. We always have to make sure to properly
>> >> cancel port forwarding requests before we disconnect from a SSH session.
>> > <snip>
>> > So how should we respond if the network connection is broken uncleanly,
>> > e.g., the WAN or Internet connection drops or the client computer
>> > crashes?
>>
>> What I do is, I try to connect and if that fails, I try to cancel the
>> port forwarding requests. This mostly works and sometimes also fails.
> <snip>
> Yes, but that is what we do as users.  What can we do as developers to
> detect and correct this situation so users do not have to do this?
> Thanks - John

I have implemented this in the python-x2go code. I am saying this from  
the developer's point of view.

Mike


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