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Re: [httpapi] Link Hints?

Henry Andrews <andrews_henry@yahoo.com> Wed, 19 July 2023 21:13 UTC

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Date: Wed, 19 Jul 2023 21:12:51 +0000
From: Henry Andrews <andrews_henry@yahoo.com>
Reply-To: Henry Andrews <andrews_henry@yahoo.com>
To: HTTP APIs Working Group <httpapi@ietf.org>, Mark Nottingham <mnot=40mnot.net@dmarc.ietf.org>
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In-Reply-To: <10303857-C095-44BB-850F-0F6B09D9C875@mnot.net>
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Subject: Re: [httpapi] Link Hints?
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 I included something like link hints when I revamped JSON Hyper-Schema back in 2017.  While Hyper-Schema's indefinitely in limbo AFAICT, it was basically a way to construct links using a template structure in the schema plus data from the JSON instance.  So the "targetHints" attribute would correspond to link hints, but in a fairly direct "here are the HTTP headers we think you'd get if you asked" sort of way.  If I'd been aware of the link hints proposal I probably would have built on that instead.
thanks,-henry
    On Wednesday, July 19, 2023 at 02:03:08 PM PDT, Mark Nottingham <mnot=40mnot.net@dmarc.ietf.org> wrote:  
 
 Hi HTTP API folks,

A longish time ago, I wrote a spec for 'HTTP link hints' that describe aspects of a HTTP resource in a fashion that's suitable for adorning links. For example, the media type(s) available on the other end, and the HTTP method(s) it might support.

  https://datatracker.ietf.org/doc/draft-nottingham-link-hint/

This is to a large degree paving the cowpaths that have been created in HTTP (e.g., the Allow header) and HTML (e.g., the 'type' attribute on links) in a way that they can be used in anyplace a link can. It's also a way of coordinating common link attributes, because RFC8288 makes attributes per-format.

I didn't push for standardisation because I wanted to make sure there was actual need for it / interest in it. I've heard some of that in backchannel recently, and was wondering what the WG thought about adopting this (or something like it).

Cheers,


P.S. Chairs I'm happy to chat about this for a few minutes next week if there's time in the meeting. If not, no worries.

--
Mark Nottingham  https://www.mnot.net/

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