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Section 5.1.1 about pubsubhubbub HOT 5 CLOSED

pubsubhubbub avatar pubsubhubbub commented on April 28, 2024
Section 5.1.1

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Comments (5)

voxpelli avatar voxpelli commented on April 28, 2024

Section 4 should also have its MUST in The HTTP [RFC2616] response from the publisher MUST include at least one Link Header reduced to a SHOULD to better indicate this possibility.

Currently it both specifies that you MUST use a header and specifies what you MAY use if there is no header. But no header means a non-compliant publisher with the current language, so the need for a fallback seems contradictory by the current spec. (I guess the fallback is there to support PuSH 0.3 publishers?)

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aaronpk avatar aaronpk commented on April 28, 2024

Thanks for the notes, @voxpelli

oh also @tantek asked me to tag him in this

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julien51 avatar julien51 commented on April 28, 2024

@aaronpk I agree with your change. It's clearer and will avoid any confusion.

@voxpelli I understand your comment and I agree that things are a bit blurry when there are no link headers. Basically think compliance with 0.4 MUST mean that HTTP link headers are used. However, it is possible to also include Links in other parts (such as the HTML <head> section, or <atom:link> elements for RSS/Atom feeds... And, as you've identified, when there are no headers, I would much rather let implementers fallback to 0.3 (even though that spec does not apply to HTML).

Basically, inline with the robustness principle, I'd rather have a "strict" spec (with the requirement for link headers) and more flexible implementations (which would tolerate missing Link Headers, as long as there are some in the html/rss). Does it make sense?

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aaronpk avatar aaronpk commented on April 28, 2024

I made a PR for this change! ^^

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julien51 avatar julien51 commented on April 28, 2024

Thanks, merged!

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