Client-Cert Header draft

Hello HTTP Working Group,

I've somewhat inadvertently found myself working on this draft
https://datatracker.ietf.org/doc/draft-bdc-something-something-certificate/,
which aspires to define a "Client-Cert" HTTP header field that allows a TLS
terminating reverse proxy to convey information about the client
certificate of a mutually-authenticated TLS connection to an origin server
in a common and predictable manner.

I presented the concept
<https://datatracker.ietf.org/meeting/107/materials/slides-107-secdispatch-client-cert-http-header-00>
at the recent virtual IETF 107 secdispatch meeting
<https://datatracker.ietf.org/meeting/107/materials/minutes-107-secdispatch-00>
and the outcome from that was basically that there seems to be some
interest in pursuing the work and the suggestion that the conversation be
taken to the HTTPbis WG (and also keep TLS WG involved - presumably if the
work progresses). And that's what brings me here. I also hope to get a
little bit of time at one of the upcoming virtual interims to
present/discuss the draft.

Thanks,
Brian

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