Hypertext Transfer Protocol (HTTP): Conditional Requests (original) (raw)

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. This document obsoletes RFC 7232.

Authors

Roy T. Fielding
Julian Reschke

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