Re: [quicwg/base-drafts] Remove PRIORITY (#2924)

Robin Marx <> Wed, 24 July 2019 14:09 UTC

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From: Robin Marx <>
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Subject: Re: [quicwg/base-drafts] Remove PRIORITY (#2924)
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There was a side meeting on prioritization in general at IETF 105 in Montreal. My personal notes (subject to errors and misinterpretations) are attached.

My main takeaways: 
- Will probably drop H2's scheme (tbd in the HTTPbis meeting later)
- Will probably move to extension-based setup to de-couple priorities from H3's core text and to stop it from being a blocker to launch QUIC/H3
- Will add a new SETTINGS parameter or similar setup so endpoints can indicate which prioritization setup they are using / want to use
- Hope to have enough people implement one or more of the extensions before H3 launches. Proof of implementation is expected to help determine which extension "wins"
- There is some disagreement on whether a frame-based or header-based design is best
- Should look at potential interop / backporting issues and opportunities for HTTP/2 as well


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