Solution overview for IETF CAPPORT.
IETF "Note well" applies.
The XML format follows https://xml2rfc.tools.ietf.org/public/rfc/html/rfc2629.html
Test your XML here: https://xml2rfc.tools.ietf.org/
This document is available from IETF: https://datatracker.ietf.org/doc/draft-larose-capport-architecture/