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w3c / vc-data-model

W3C Verifiable Credentials v2.0 Specification
https://w3c.github.io/vc-data-model/
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Changed the Media Type specifications to ignore HTTP link headers #1539

Closed iherman closed 3 months ago

iherman commented 3 months ago

See the comment, and following discussion thread, in https://github.com/w3c/vc-data-integrity/pull/301#pullrequestreview-2217459301. This PR proposes a solution to those editorial issues.

(I have shamelessly reused the text used in the JSON-LD specification...)

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TallTed commented 3 months ago

"disallow" suggests "compliant software is not allowed to include @context info in those headers".

"ignore", on the other hand, permits delivery of @context info in those headers for purposes not related to VCs/VPs.

iherman commented 3 months ago

The issue was discussed in a meeting on 2024-08-14

View the transcript #### 3.1. Changed the Media Type specifications to ignore HTTP link headers (pr vc-data-model#1539) _See github pull request [vc-data-model#1539](https://github.com/w3c/vc-data-model/pull/1539)._ **Manu Sporny:** The PR is a suggestion that came up during a discussion in an issue that makes it clear that "we" (the VCWG and media types) that we specifically prohibit using a link header for a JSON-LD context and we do this because it externalizes the context and we don't have any use cases for the added complexity. Ivan indicated it would be a good idea to specifically call this out so this PR does that. **Ivan Herman:** Just to be precise, before, when we were using the hypothetical media type vc+ld+json -- then this remark was not necessary because JSON-LD spec has clear language on this. … Using HTTP for context was automatically disallowed. We changed the media type, this remark remained ineffective for our media type. I.e., it's a bit more than an extra note, it's setting the situation where we were before we changed the media type. **Brent Zundel:** this looks like its on track to be merged soon.