Additional Link Relation Types
draft-snell-additional-link-relations-03

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Network Working Group                                           J. Snell
Internet-Draft                                               May 9, 2012
Intended status: Standards Track
Expires: November 10, 2012

                     Additional Link Relation Types
                draft-snell-additional-link-relations-03

Abstract

   This specification defines a number of additional Link Relation Types
   that can used for a variety of purposes..

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on November 10, 2012.

Copyright Notice

   Copyright (c) 2012 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
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Snell                   Expires November 10, 2012               [Page 1]
Internet-Draft                 HTTP Prefer                      May 2012

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  "about" . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  "privacy-policy"  . . . . . . . . . . . . . . . . . . . . . . . 3
   4.  "terms-of-service"  . . . . . . . . . . . . . . . . . . . . . . 4
   5.  "type"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     8.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . . . 7

Snell                   Expires November 10, 2012               [Page 2]
Internet-Draft                 HTTP Prefer                      May 2012

1.  Introduction

   This specification defines a number of additional Link Relation Types
   for a variety of common linking scenarios.

   In this document, the key words "MUST", "MUST NOT", "REQUIRED",
   "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY",
   and "OPTIONAL" are to be interpreted as described in [RFC2119].

2.  "about"

   The "about" Link relation can be used to refer to a resource that is
   the subject of the link's context.  Multiple subjects can be
   indicated through the use of multiple "about" link relations.

   For example, if the context resource is a review about a particular
   product, the "about" link can be used to reference the URL of the
   product:

     HTTP/1.1 200 OK
     Content-Type: application/json
     Link: <http://store.example.org/product/abc>; rel="about"

     {...}

3.  "privacy-policy"

   The "privacy-policy" Link relation can be used to refer to a resource
   describing the privacy policy associated with the link's context.
   The privacy policy can be any resource that discloses what personal
   information about the user is collected, and how that personal
   information is stored, used, managed and disclosed to other parties.

   For example, an HTTP server that collects personal information about
   a user throughout the course of the user's interaction with the
   service can include "privacy-policy" Links within all HTTP Responses
   using any combination of Link headers or links embedded in the
   response payload:

Snell                   Expires November 10, 2012               [Page 3]
Internet-Draft                 HTTP Prefer                      May 2012

   An example showing various locations where privacy-policy links can
   potentially appear:

     HTTP/1.1 200 OK
     Content-Type: text/html
     Link: </privacy-policy.html>; rel="privacy-policy"

     <html>
       <head>
         ...
         <link rel="privacy-policy" href="/privacy-policy.html">
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