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Re: [quicwg/base-drafts] Consider making h3 frame types varint (#2253)

Martin Thomson <notifications@github.com> Mon, 31 December 2018 01:08 UTC

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Subject: Re: [quicwg/base-drafts] Consider making h3 frame types varint (#2253)
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One thing that SETTINGS doesn't support is the use of new frame types prior to receiving SETTINGS.  For instance, if I wanted to push out an origin policy in 0.5RTT on a regular connection (using the context-free push that @ekr and @LPardue talked about), I could maybe do that with a new frame type.  Both h2 and h3 allow unannounced use of new frame types, so this would work fine.

If the space is 8-bit, then I can't experiment with that spontaneously and without coordination.

I'm leaning toward the varint on that basis.  The larger encodings will push things off the fast path, but I think that's OK.

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