%% You should probably cite rfc9440 instead of this I-D. @techreport{ietf-httpbis-client-cert-field-00, number = {draft-ietf-httpbis-client-cert-field-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-httpbis-client-cert-field/00/}, author = {Brian Campbell and Mike Bishop}, title = {{Client-Cert HTTP Header Field: Conveying Client Certificate Information from TLS Terminating Reverse Proxies to Origin Server Applications}}, pagetotal = 14, year = 2021, month = jun, day = 8, abstract = {This document defines the HTTP header field "Client-Cert" that allows a TLS terminating reverse proxy to convey the client certificate of a mutually-authenticated TLS connection to the origin server in a common and predictable manner.}, }