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net/http: support HTTP/3 #32204
I searched for an issue to track progress of implementing HTTP/3 in the standard library but couldn't find one, so I'm opening this new issue to track this (presumably inevitable) effort.
HTTP/3 is still an IETF draft, so there's not too much point starting work on this yet. The relevant spec is (currently) available here: https://quicwg.org/base-drafts/draft-ietf-quic-http.html.
Some questions we may want to answer before any work starts:
Of note is an existing attempt at implementing QUIC and HTTP/3 in pure go: https://github.com/lucas-clemente/quic-go.
Cloudflare now supports HTTP/3, and Chrome and Firefox will shortly start supporting it: https://blog.cloudflare.com/http3-the-past-present-and-future/