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Re: Issue with Greg's davlib.py module

From: Elias Sinderson <elias@cse.ucsc.edu>
Date: Mon, 25 Jul 2005 09:57:00 -0700
Message-ID: <42E519DC.8090309@cse.ucsc.edu>
To: ageslin@groupe-atlantic.com
CC: w3c-dist-auth@w3.org

ageslin@groupe-atlantic.com wrote:

> I hope I'm posting to the right mailing-list, I have an issue with 
> Greg's davlib.py module (python).

Well, technically speaking, this probably isn't the right list, however 
there is a great deal of WebDAV expertise to be found here.  :-)

> [...] I can successfully run some propfind, mkcol, put and delete 
> command on my Apache server, but can only run 1 command per session or 
> I get an fp.readline "Connection Reset by peer" issue in getresponse.

It sounds as if the 'Connection: Keep-Alive' header isn't being set . . .

> Therefore I have to add sesssion.close() and session.connect between 
> each command I want to send to my server. This is annoying as 
> performance goes down. [...]

Yes, this is the very reason Keep-Alive (and pipelining) was introduced 
- so that one wouldn't need to tear down connections between requests to 
the same server. There are several decent web pages that explain the 
details of the Keep-Alive header and pipelining of requests [1, 2], but 
I'd recommend starting with the HTTP specification [3] itself and then 
referring to other sites if you need more information.

FYI, I looked briefly at the davlib.py and saw no mention of the header. 
. . Also, one should note that, as useful as it is, davlib.py is not 
really distributed as an industrial strength DAV library.


[1] <http://www.io.com/~maus/HttpKeepAlive.html>
[2] <http://www.mozilla.org/projects/netlib/http/pipelining-faq.html>
[3] <http://www.faqs.org/rfcs/rfc2616.html>
Received on Monday, 25 July 2005 16:57:11 UTC

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