Your link is a bit stale. Here's a link to the latest version of the draft, published October 31st 2019: https://tools.ietf.org/html/draft-ietf-httpbis-bcp56b

Your link is a bit stale. Here's a link to the latest version of the draft, published October 31st 2019: https://tools.ietf.org/html/draft-ietf-httpbis-bcp56bis-09 https://tools.ietf.org/html/draft-ietf-httpbis-bcp56bis-09