[Yum-devel] urlgrabber socket timeouts

[Michael Stenner]

On Wed, Sep 29, 2004 at 01:08:34AM -0400, seth vidal wrote:
> Michael, Ryan,
>  Have either of you looked into socket.gettimeout() and socket.
> settimeout() for urlgrabber calls?
> 
> am I off in completely left field?

You're not in left field at all.  The only issue is that this is only
available in 2.3.  In previous versions, you'd need to include a third
party module.

On Wed, Sep 29, 2004 at 01:18:18AM -0400, seth vidal wrote:
> Hi,
>  I did some VERY simple tests and it seems like
> 
> import socket
> socket.setdefaultimeout(float)
> 
> set's a timeout on all socket operations until it is unset.
> 
> This could be something worth looking into for cleaning up connections
> where the connection or the server went away

I agree that this is a good way to go.  It doesn't completely solve
timeout problems though because tcp timeouts won't always save you
from a stupid/slow server.  A tcp timeout happens when one side sends
a request but doesn't get an acknowledgement.  It's quite possible
(and common in ssh or imap connections) to simply have no requests
made for a very long time.  In that case, you'd also need higher-level
timeouts, which I was looking into a couple weeks ago before I got
swamped in work.

In short, I'd have no problem implementing this as an "only >=2.3"
feature.  However, we should probably be clear from the start that we
will eventually remove the checks, meaning: if you want to use new
urlgrabbers with old pythons for a long time, you should simply not
use this option.

					-Michael
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