RFC 7240 · PROPOSED STANDARD · 2014
SUN · 14 JUN 2026
Prefer Header for HTTP
Overview
RFC 7240, “Prefer Header for HTTP”, is a Proposed Standard document published in June 2014 by J. Snell. It has since been updated by RFC 8144. The canonical text is published by the RFC Editor.
Abstract
This specification defines an HTTP header field that can be used by a client to request that certain behaviors be employed by a server while processing a request.
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.
Read this RFC
The canonical text of RFC 7240 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2014
- RFC 7239 Forwarded HTTP Extension
- RFC 7241 The IEEE 802/IETF Relationship
- RFC 7238 The Hypertext Transfer Protocol Status Code 308
- RFC 7242 Delay-Tolerant Networking TCP Convergence-Layer Protocol
- RFC 7237 Initial Hypertext Transfer Protocol Method Registrations
- RFC 7243 RTP Control Protocol Extended Report Block for the Bytes Discarded Metric
- RFC 7236 Initial Hypertext Transfer Protocol Authentication Scheme Registrations
- RFC 7244 RTP Control Protocol Extended Report Blocks for Synchronization Delay and Offset Metrics Reporting