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Re: Reviving HTTP Header Linking: Some code and use-cases

From: Mark Nottingham <mnot@mnot.net>
Date: Fri, 14 Mar 2008 21:53:27 +1100
Cc: ietf-http-wg@w3.org
Message-Id: <7C7EEB76-9AE5-451F-BAED-3CA2219772C7@mnot.net>
To: Harry Halpin <hhalpin@ibiblio.org>

I've submitted a draft-01 (perhaps against my best judgement; this  
discussion is rapidly consuming the mailing list...), which should  
appear shortly. In the meantime, it's available at <http://www.mnot.net/drafts/draft-nottingham-http-link-header-01.txt 

It is in no way a finished product; it's just a straw-man that tries  
to cover the issues, so it's easier to appreciate what they are (even  
if we don't go in this direction).


On 10/03/2008, at 5:54 AM, Harry Halpin wrote:

> Hi, I'm Harry Halpin, and I'm working on GRDDL (Gleaning Resource
> Descriptions from Dialects of Language) with the W3C, a rather neat
> technology that helps us get uniform metadata from diverse XML,  
> (X)HTML,
> microformats, and (hopefully soon) HTML documents using a simple mix  
> of
> widely deployed technologies.
> I'd just like to send a e-mail to see if we can revive Mark  
> Nottingham's
> "HTTP Header Linking Draft", from which we in particular would like to
> see the Link and Profile headers revived [1]. What's the current  
> status
> of this idea?
> We'd like to see this as an IETF-approved part of HTTP. Reviving
> Nottingham's draft would solve a big problem for us. In order for
> authors of documents on the Web to tell agents that there is a  
> transform
> to get data out of their data, they need a link to the transform and  
> the
> ability for the agent to tell that link is actually not just an  
> ordinary
> link, but the link of a GRDDL transform. This is absolutely needed for
> the cases where the document owner may want to authorize to the
> transformation, but may not want to add the information to the  
> header of
> *every* document in the collection or have access to the document. A
> use-case given by Ian Davis of Talis has been written in more detail  
> [2].
> We also have running code that implements this feature in the Jena  
> Java
> implementation of GRDDL [3]. It's a simple feature for implementers to
> implement, and if even more people gave head's up to this feature I
> believe there would be many more implementers who would add this
> feature. thanks, harry
> [1]http://www.mnot.net/drafts/draft-nottingham-http-link-header-00.txt
> [2]http://www.w3.org/TR/grddl-scenarios/#header_use_case
> [3]http://jena.sourceforge.net/grddl/
> -- 
> 		-harry
> Harry Halpin,  University of Edinburgh
> http://www.ibiblio.org/hhalpin 6B522426

Mark Nottingham     http://www.mnot.net/
Received on Friday, 14 March 2008 10:54:07 UTC

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