Prefer Header for HTTP

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual in app area)
Author James Snell 
Last updated 2012-08-11 (latest revision 2012-02-08)
Stream IETF
Intended RFC status Proposed Standard
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state (None)
Document shepherd None
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Barry Leiba
IESG note Mark Nottingham is the document shepherd.
Send notices to,,

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This specification defines an HTTP header field that can be used by a client to request that certain behaviors be implemented by a server while processing a request.


James Snell (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)