topic Registered
Verified 2026-09-19 · registry updated 2026-08-28

HTTP registry: 0x02

ADDRESS_REQUEST

MASQUE values support proxying datagrams or traffic through HTTP/3 and extended CONNECT. 0x02 is permanent in HTTP Capsule Types. Defining reference: rfc9484.

httpregistrymasquehttp-capsule-types

Identifier (http)

0x02

ADDRESS_REQUEST

Apply strict authorization and destination policy so tunnels cannot reach arbitrary internal networks or ports.

This registry value is currently marked permanent by IANA. Follow the defining specification before sending, accepting, or proxying it.

IANA registry: masque/http-capsule-types

Registry reference: rfc9484

Permalink: https://merginit.com/reference/http/registry/masque/http-capsule-types/0x02-309