Re: [quicwg/base-drafts] QPACK: instructions and stream description is suboptimal (#2339)

Lucas Pardue <> Wed, 16 January 2019 16:53 UTC

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From: Lucas Pardue <>
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Subject: Re: [quicwg/base-drafts] QPACK: instructions and stream description is suboptimal (#2339)
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I'm happy to come up with a PR containing some proposals. 

I think we have some diversity in perspective. Coming from a HTTP/3-first position with a background in HTTP/2, my currency is the _header block_. I've been told it can be sent in HEADERS and PUSH_PROMISE, I don't need to be told how those frames are sent (i.e. what streams).

As someone unfamiliar with the specification, the instructions don't leap out. There is not one section in the TOC that mentions the term _instruction_. From my limited appreciation, I'd class the instructions as a primitive of header compression. But I accept that these are perhaps the QPACK data model, with primitives akin to built-in types. 

It still hasn't leapt out to me if the encoder and decoder stream exchange clear header blocks, or just a stream of instructions.

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