Indicating, Discovering, Negotiating, and Writing Profiled Representations
draft-svensson-profiled-representations-00

Document Type Active Internet-Draft (individual)
Authors Lars Svensson  , Ruben Verborgh  , Herbert Van de Sompel 
Last updated 2021-02-03
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Internet Engineering Task Force                              L. Svensson
Internet-Draft
Intended status: Informational                               R. Verborgh
Expires: August 7, 2021                          Ghent University - imec
                                                        H. Van de Sompel
                                   Data Archiving and Networked Services
                                                        February 3, 2021

       Indicating, Discovering, Negotiating, and Writing Profiled
                            Representations
               draft-svensson-profiled-representations-00

Abstract

   This document details approaches for enriching HTTP interactions with
   information pertaining to the profiles to which resource
   representations conform.  It surveys approaches that were recently
   introduced to indicate the profile of a resource representation, and
   to make representations that conform to a profile discoverable.  It
   introduces a generally applicable approach to negotiate for a
   resource representation that conforms to a profile preferred by a
   user agent.  That approach leverages the existing content negotiation
   mechanism but applies it to the profile dimension to which it was
   previously not applied.  The document also shows how a server can
   convey which profiled representations it is able to accept from a
   user agent.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 7, 2021.

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Copyright Notice

   Copyright (c) 2021 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
   (https://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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Purpose . . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Notational Conventions  . . . . . . . . . . . . . . . . .   5
   2.  Indicating Profiled Representations . . . . . . . . . . . . .   5
   3.  Discovering Profiled Representations  . . . . . . . . . . . .   7
   4.  Negotiating for Profiled Representations  . . . . . . . . . .   7
     4.1.  Profile Negotiation Details . . . . . . . . . . . . . . .   8
       4.1.1.  Proactive Profile Negotiation . . . . . . . . . . . .   9
       4.1.2.  Reactive Profile Negotiation  . . . . . . . . . . . .  12
     4.2.  Accept-Profile HTTP Header Syntax . . . . . . . . . . . .  14
   5.  Writing Profiled Representations  . . . . . . . . . . . . . .  14
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  16
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  17
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18

1.  Introduction

   Any given web resource can typically be represented in a variety of
   ways.  For example, the same information could be rendered according
   to different media types, say, as XML or JSON.  But in many cases,
   variations in representation other than those inherent to a given
   media type are also possible.  For example, the same structured data
   could be rendered in XML according to different XML Schema
   [W3C.REC-xmlschema11-1-20120405].  Or the same RDF graph could be
   expressed on the basis of different vocabularies.

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