Internet Engineering Task Force (IETF)M. Nottingham
Request for Comments: 9205June 2022
Obsoletes: 3205
BCP: 56
Category: Best Current Practice
ISSN: 2070-1721

Building Protocols with HTTP


Applications often use HTTP as a substrate to create HTTP-based APIs. This document specifies best practices for writing specifications that use HTTP to define new application protocols. It is written primarily to guide IETF efforts to define application protocols using HTTP for deployment on the Internet but might be applicable in other situations.

This document obsoletes RFC 3205.