Uniform Resource Names (URNs)
draft-ietf-urnbis-rfc2141bis-urn-22

Document Type Active Internet-Draft (urnbis WG)
Last updated 2017-03-17 (latest revision 2017-03-02)
Replaces draft-ietf-urnbis-rfc3406bis-urn-ns-reg, draft-saintandre-urnbis-2141bis, draft-ah-rfc2141bis-urn
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication Dec 2013 Dec 2013 Jan 2014 Feb 2014 Mar 2014
Document shepherd Barry Leiba
Shepherd write-up Show (last changed 2017-02-02)
IESG IESG state RFC Ed Queue
Consensus Boilerplate Yes
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Responsible AD Alexey Melnikov
Send notices to "Barry Leiba" <barryleiba@computer.org>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
RFC Editor RFC Editor state EDIT
URNBIS                                                    P. Saint-Andre
Internet-Draft                                                  Filament
Obsoletes: 2141, 3406 (if approved)                           J. Klensin
Intended status: Standards Track
Expires: September 3, 2017                                 March 2, 2017

                     Uniform Resource Names (URNs)
                  draft-ietf-urnbis-rfc2141bis-urn-22

Abstract

   A Uniform Resource Name (URN) is a Uniform Resource Identifier (URI)
   that is assigned under the "urn" URI scheme and a particular URN
   namespace, with the intent that the URN will be a persistent,
   location-independent resource identifier.  With regard to URN syntax,
   this document defines the canonical syntax for URNs (in a way that is
   consistent with URI syntax), specifies methods for determining URN-
   equivalence, and discusses URI conformance.  With regard to URN
   namespaces, this document specifies a method for defining a URN
   namespace and associating it with a namespace identifier, and
   describes procedures for registering namespace identifiers with the
   Internet Assigned Numbers Authority (IANA).  This document obsoletes
   both RFC 2141 and RFC 3406.

Status of This Memo

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

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   This Internet-Draft will expire on September 3, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Saint-Andre & Klensin   Expires September 3, 2017               [Page 1]
Internet-Draft                    URNs                        March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
     1.2.  Design Tradeoffs  . . . . . . . . . . . . . . . . . . . .   6
       1.2.1.  Resolution  . . . . . . . . . . . . . . . . . . . . .   7
       1.2.2.  Character Sets and Encodings  . . . . . . . . . . . .   8
   2.  URN Syntax  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     2.1.  Namespace Identifier (NID)  . . . . . . . . . . . . . . .  10
     2.2.  Namespace Specific String (NSS) . . . . . . . . . . . . .  10
     2.3.  Optional Components . . . . . . . . . . . . . . . . . . .  11
       2.3.1.  r-component . . . . . . . . . . . . . . . . . . . . .  11
       2.3.2.  q-component . . . . . . . . . . . . . . . . . . . . .  12
       2.3.3.  f-component . . . . . . . . . . . . . . . . . . . . .  14
   3.  URN-Equivalence . . . . . . . . . . . . . . . . . . . . . . .  15
     3.1.  Procedure . . . . . . . . . . . . . . . . . . . . . . . .  15
     3.2.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .  16
   4.  URI Conformance . . . . . . . . . . . . . . . . . . . . . . .  17
     4.1.  Use in URI Protocol Slots . . . . . . . . . . . . . . . .  17
     4.2.  Parsing . . . . . . . . . . . . . . . . . . . . . . . . .  18
     4.3.  URNs and Relative References  . . . . . . . . . . . . . .  18
     4.4.  Transport and Display . . . . . . . . . . . . . . . . . .  19
     4.5.  URI Design and Ownership  . . . . . . . . . . . . . . . .  19
   5.  URN Namespaces  . . . . . . . . . . . . . . . . . . . . . . .  19
     5.1.  Formal URN Namespaces . . . . . . . . . . . . . . . . . .  21
     5.2.  Informal URN Namespaces . . . . . . . . . . . . . . . . .  23
   6.  Defining and Registering a URN Namespace  . . . . . . . . . .  23
     6.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .  23
     6.2.  Registration Policy and Process: Community Registrations   24
     6.3.  Registration Policy and Process: Fast Track for Standards
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