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Prefer Header for HTTP (RFC7240)

IP.com Disclosure Number: IPCOM000237200D
Publication Date: 2014-Jun-08
Document File: 34 page(s) / 33K

Publishing Venue

The IP.com Prior Art Database

Related People

J. Snell: AUTHOR

Abstract

Within the course of processing an HTTP request, there are typically a range of required and optional behaviors that a server or intermediary can employ. These often manifest in a variety of subtle and not-so-subtle ways within the response.

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This is the abbreviated version, containing approximately 8% of the total text.

Internet Engineering Task Force (IETF)                          J. Snell Request for Comments: 7240                                     June 2014 Category: Standards Track ISSN: 2070-1721

                          Prefer Header for HTTP

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.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7240.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    (http://trustee.ietf.org/license-info) in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Snell                        Standards Track                    [Page 1]
 RFC 7240                       HTTP Prefer                     June 2014

 Table of Contents

   1. Introduction ....................................................2

      1.1. Syntax Notation ............................................4

   2. The Prefer Request Header Field .................................4

      2.1. Examples ...................................................6

   3. The Preference-Applied Response Header Field ....................7

   4. Preference Definitions ..........................................8

      4.1. The "respond-async" Preference .............................8

      4.2. The "return=representation" and "return=minimal"

           Preferences ................................................9

      4.3. The "wait" Preference .....................................11

      4.4. The "handling=strict" and "handling=lenient" Processing ...12

   5. IANA Considerations .....................................