[issue11199] urllib hangs when closing connection

rg3 report at bugs.python.org
Tue Feb 22 20:09:55 CET 2011


rg3 <sarbalap+freshmeat at gmail.com> added the comment:

> > I have to correct myself. I applied the patch manually to my Python
> > 2.6 installation. In Python 2.6, the line you moved is number 961,
> > and I did the same change.
> 
> OK. For information, you can apply it using the Unix "patch" command,
> who can most of the time do all the work for you.

Yes, thanks, I already knew about "patch" but decided to apply the 
change manually just in case, as it belonged to a different Python 
branch.

> That's expected, it's a consequence of this point I raised earlier:
> > Note that I'm not sure why we need to wait for a further message on
> > the control channel (maybe it's part of an RFC or something...).

There's no doubt that not hanging is an improvement, but the current 
behavior somewhat defeats the purpose of an early call to "close".

To get a broader view, the test case I provided is actually part of a 
much larger program. In that program, I read lines from the Slackware 
change log, stopping when I read a line that the program already knows 
about (because it caches the change log contents). This prevents the 
program from reading more than a single line if no new entries are 
present in the change log, but having to wait for the full file defeats 
the purpose, specially on slow dial-up connections.

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<http://bugs.python.org/issue11199>
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