Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests, June 2014
- File formats:
- PROPOSED STANDARD
- RFC 2616
- Obsoleted by:
- RFC 9110
- R. Fielding, Ed.
J. Reschke, Ed.
- httpbis (app)
Discuss this RFC: Send questions or comments to the mailing list [email protected]
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.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.