Constraining transport parameter allocations

Martin Thomson <mt@lowentropy.net> Tue, 04 May 2021 00:55 UTC

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Date: Tue, 04 May 2021 10:54:47 +1000
From: "Martin Thomson" <mt@lowentropy.net>
To: quic@ietf.org
Cc: "Zaheduzzaman Sarker" <Zaheduzzaman.Sarker@ericsson.com>
Subject: Constraining transport parameter allocations
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Most of our registries reserve the short varint values (0x00-0x3f) for RFCs.  We didn't do that for transport parameters.

Is there any reason why we should not ask IANA to change this?  The RFC editor noted the discrepancy and I can't say that it was deliberate.

It is probably an accident.  Remember that we only changed the format of transport parameters fairly late in the process and so we probably missed this when that happened.

I would like to ask IANA to tweak the registry policies here, but that means we need to be careful.  Minimally, that means AD approval (Hi Zahed).

See https://github.com/quicwg/base-drafts/issues/4880 for an issue.

https://github.com/quicwg/base-drafts/pull/4887/commits/7e4f0f1ee11db09d7bda5617de51ec06f1b34d24 does this (it's attached to https://github.com/quicwg/base-drafts/pull/4887 but that pulls in other changes).