Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)
RFC 5627
Document | Type |
RFC - Proposed Standard
(October 2009; Errata)
Was draft-ietf-sip-gruu (sip WG)
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Author | Jonathan Rosenberg | ||
Last updated | 2020-01-21 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5627 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Cullen Jennings | ||
Send notices to | (None) |
Network Working Group J. Rosenberg Request for Comments: 5627 Cisco Systems Category: Standards Track October 2009 Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP) Abstract Several applications of the Session Initiation Protocol (SIP) require a user agent (UA) to construct and distribute a URI that can be used by anyone on the Internet to route a call to that specific UA instance. A URI that routes to a specific UA instance is called a Globally Routable UA URI (GRUU). This document describes an extension to SIP for obtaining a GRUU from a registrar and for communicating a GRUU to a peer within a dialog. Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 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 BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified Rosenberg Standards Track [Page 1] RFC 5627 GRUU Mechanism October 2009 outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Rosenberg Standards Track [Page 2] RFC 5627 GRUU Mechanism October 2009 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Overview of Operation . . . . . . . . . . . . . . . . . . . . 5 3.1. Structure of GRUUs . . . . . . . . . . . . . . . . . . . . 5 3.1.1. GRUUs That Expose the Underlying AOR . . . . . . . . . 6 3.1.2. GRUUs That Hide the Underlying AOR . . . . . . . . . . 6 3.2. Obtaining a GRUU . . . . . . . . . . . . . . . . . . . . . 7 3.3. Using a GRUU . . . . . . . . . . . . . . . . . . . . . . . 8 3.4. Dereferencing a GRUU . . . . . . . . . . . . . . . . . . . 8 4. User Agent Behavior . . . . . . . . . . . . . . . . . . . . . 9 4.1. Generating a REGISTER Request . . . . . . . . . . . . . . 9 4.2. Learning GRUUs from REGISTER Responses . . . . . . . . . . 10 4.3. Constructing a Self-Made GRUU . . . . . . . . . . . . . . 11 4.4. Using One's Own GRUUs . . . . . . . . . . . . . . . . . . 12 4.4.1. Considerations for Multiple AORs . . . . . . . . . . . 13 4.5. Dereferencing a GRUU . . . . . . . . . . . . . . . . . . . 14 4.6. Rendering GRUUs on a User Interface . . . . . . . . . . . 14 5. Registrar Behavior . . . . . . . . . . . . . . . . . . . . . . 14 5.1. Processing a REGISTER Request . . . . . . . . . . . . . . 14 5.2. Generating a REGISTER Response . . . . . . . . . . . . . . 16 5.3. Timing Out a Registration . . . . . . . . . . . . . . . . 16 5.4. Creation of a GRUU . . . . . . . . . . . . . . . . . . . . 17 5.5. Registration Event Support . . . . . . . . . . . . . . . . 19 6. Proxy Behavior . . . . . . . . . . . . . . . . . . . . . . . . 19 6.1. Request Targeting . . . . . . . . . . . . . . . . . . . . 19 6.2. Record-Routing . . . . . . . . . . . . . . . . . . . . . . 21 7. Grammar . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 23Show full document text