Yeah it’s not part of the TLS 1.3 spec (RFC8446). It’s being added, but early stages. Internet draft is here: https://www.ietf.org/id/draft-ietf-tls-esni-02.

Yeah it’s not part of the TLS 1.3 spec (RFC8446). It’s being added, but early stages. Internet draft is here: https://www.ietf.org/id/draft-ietf-tls-esni-02.txt https://www.ietf.org/id/draft-ietf-tls-esni-02.txt