Hypertext Transfer Protocol : Conditional Requests
RFC 7232, “Hypertext Transfer Protocol : Conditional Requests”, is a Proposed Standard document published in June 2014 by R. Fielding, J. Reschke. It obsoletes RFC 2616. It has been obsoleted by RFC 9110 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
The Hypertext Transfer Protocol (HTTP) is a stateless application- level protocol for distributed, collaborative, hypertext information systems. This document defines HTTP/1.1 conditional requests, including metadata header fields for indicating state changes, request header fields for making preconditions on such state, and rules for constructing the responses to a conditional request when one or more preconditions evaluate to false.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7232 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7231 Hypertext Transfer Protocol : Semantics and Content
- RFC 7233 Hypertext Transfer Protocol : Range Requests
- RFC 7230 Hypertext Transfer Protocol : Message Syntax and Routing
- RFC 7234 Hypertext Transfer Protocol : Caching
- RFC 7229 Object Identifiers for Test Certificate Policies
- RFC 7235 Hypertext Transfer Protocol : Authentication
- RFC 7228 Terminology for Constrained-Node Networks
- RFC 7236 Initial Hypertext Transfer Protocol Authentication Scheme Registrations