W3C home > Mailing lists > Public > public-wai-ert@w3.org > February 2006

Re: HTTP in RDF (Re: Valentines' Note)

From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
Date: Tue, 14 Feb 2006 15:15:22 +0100
Message-Id: <6.0.0.22.2.20060214144955.031e5820@mailserv.esat.kuleuven.be>
To: public-wai-ert@w3.org

Hi Johannes,

At 14:43 14/02/2006, Johannes Koch wrote:
>Hi Christophe,
>
>Christophe Strobbe wrote:
>(...)
>>Another response header that appears to be widely supported by browsers 
>>is "Refresh"; see the discussion on the WCAG list 
>>(http://lists.w3.org/Archives/Public/w3c-wai-gl/2006JanMar/0078.html) and 
>>the failure in the WCAG Wiki:
>>http://trace.wisc.edu/wcag_wiki/index.php?title=Failure_due_to_using_server-side_techniques_to_automatically_redirect_pages_after_a_timeout. 
>>
>
>Is there a RFC or any other document we can reference about Refresh? Of 
>course, there's a lot about using Refresh in HTML's meta element, but what 
>about using it in HTTP?

I don't think there's an RFC or other specification because it seems to be 
a non-standard header. It's the server-side equivalent of HTML META refresh 
and it works in Mozilla 1.7.3, Firefox 1.0, Opera 7.54, Opera 8.02 and 
Internet Explorer 6.0
SP1 on Windows 2000 (see the "Failure" mentioned above; if you want to test 
in other browsers, see the link at the bottom of 
http://purl.org/NET/error404/xp/scripting/redirect/index.htm).
When Googling for info about this header, you always end up with results 
about HTML META refresh, so it takes some time to find references. 
According to http://www.w3.org/Protocols/HTTP/Issues/http-wg.html, Netscape 
used this header already in 1995. It is also discussed in "An Exploration 
on Dynamic Contents" by Netscape 
(http://wp.netscape.com/assist/net_sites/pushpull.html). In 1997 (a long 
time ago, I know), someone even did a count on frequency of headers and 
meta attributes: http://vancouver-webpages.com/META/bycount.shtml.

Another list of headers is at 
http://vancouver-webpages.com/META/index.shtml, and it mentions the 
relevant RFC if there is one.

Regards,

Christophe Strobbe

>--
>Johannes Koch - Competence Center BIKA
>Fraunhofer Institute for Applied Information Technology (FIT.LIFE)
>Schloss Birlinghoven, D-53757 Sankt Augustin, Germany
>Phone: +49-2241-142628

-- 
Christophe Strobbe
K.U.Leuven - Departement of Electrical Engineering - Research Group on 
Document Architectures
Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM
tel: +32 16 32 85 51
http://www.docarch.be/ 


Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Received on Tuesday, 14 February 2006 14:15:40 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 8 January 2008 14:18:26 GMT