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Re: Recognizing a WebDAV enabled client

From: Michael Wechner <michael.wechner@wyona.com>
Date: Fri, 30 Jun 2006 10:09:15 +0200
Message-ID: <44A4DC2B.6020603@wyona.com>
To: Julian Reschke <julian.reschke@gmx.de>
CC: w3c-dist-auth@w3.org

Julian Reschke wrote:
> Michael Wechner schrieb:
>> Hi
>> It's not clear to me how a server can recognize a WebDAV enabled 
>> client from a GET request and
> It can't.
>> also how the client can communicate the version of WebDAV which the 
>> client has implemented.
> Same.
> Why would the server care?
because the server might be able to handle different versions of WebDAV. 
I think this makes sense
for backward and forward compatibility reasons.

Also the server might want to deliver a different response, e.g. if the 
GET request is being issued from a regular Web-Browser,
then the server might respond with a common (X)HTML, but if the GET 
request is being issued from Cadaver or OpenOffice then
the server might respond with an ODT file.
>> I have seen in the spec that one can set  the HTTP header parameter 
>> DAV: 1,.... but it seems to
> No, (in RFC2518) that's a response header. RFC2518bis allows 
> extensions to use this as a request header, but so far BIND is the 
> only one using it.

>> be that nobody is really doing this, but rather people are using 
>> reserved ports or URI prefixes as workarounds for
>> WebDAV GET requests, but which seems to me leads to a lot of code 
>> duplication and other issues
>> (for instance having to open a specific port within a firewall, etc.).
>> Any pointer re this problem is very much appreciated.
> I guess you'll need to explain first what the problem is.

please see above or let me know if I shall provide other examples why I 
think it would be good
to be able to differentiate between a WebDAV client and whatever.

All the best


Michael Wechner
Wyona      -   Open Source Content Management   -    Apache Lenya
http://www.wyona.com                      http://lenya.apache.org
michael.wechner@wyona.com                        michi@apache.org
+41 44 272 91 61
Received on Friday, 30 June 2006 08:09:16 UTC

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