HTTP Client Hints
draft-ietf-httpbis-client-hints-07

The information below is for an old version of the document
Document Type Expired Internet-Draft (httpbis WG)
Author Ilya Grigorik 
Last updated 2019-09-12 (latest revision 2019-03-11)
Replaces draft-grigorik-http-client-hints
Stream Internet Engineering Task Force (IETF)
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Stream WG state WG Document (wg milestone: - Submit Client Hints... )
Document shepherd Mark Nottingham
Shepherd write-up Show (last changed 2016-11-21)
IESG IESG state Expired
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Send notices to "Mark Nottingham" <mnot@mnot.net>

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-ietf-httpbis-client-hints-07.txt

Abstract

HTTP defines proactive content negotiation to allow servers to select the appropriate response for a given request, based upon the user agent's characteristics, as expressed in request headers. In practice, clients are often unwilling to send those request headers, because it is not clear whether they will be used, and sending them impacts both performance and privacy. This document defines two response headers, Accept-CH and Accept-CH- Lifetime, that servers can use to advertise their use of request headers for proactive content negotiation, along with a set of guidelines for the creation of such headers, colloquially known as "Client Hints." It also defines an initial set of Client Hints.

Authors

Ilya Grigorik (ilya@igvita.com)

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