Internet Engineering Task Force (IETF)R. Fielding, Editor
Request for Comments: 9110Adobe
Obsoletes: 2818, 7230, 7231, 7232, 7233, 7235, 7538, 7615, 7694M. Nottingham, Editor
STD: 97Fastly
Updates: 3864J. Reschke, Editor
Category: Standards Trackgreenbytes
ISSN: 2070-1721June 2022

HTTP Semantics


The Hypertext Transfer Protocol (HTTP) is a stateless application-level protocol for distributed, collaborative, hypertext information systems. This document describes the overall architecture of HTTP, establishes common terminology, and defines aspects of the protocol that are shared by all versions. In this definition are core protocol elements, extensibility mechanisms, and the "http" and "https" Uniform Resource Identifier (URI) schemes.

This document updates RFC 3864 and obsoletes RFCs 2818, 7231, 7232, 7233, 7235, 7538, 7615, 7694, and portions of 7230.