Session Initiation Protocol (SIP) INFO Method and Package Framework
RFC 6086
| Document | Type |
RFC - Proposed Standard
(January 2011; Errata)
Obsoletes RFC 2976
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-ietf-sip-info-events | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6086 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Robert Sparks | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) C. Holmberg
Request for Comments: 6086 Ericsson
Obsoletes: 2976 E. Burger
Category: Standards Track Georgetown University
ISSN: 2070-1721 H. Kaplan
Acme Packet
January 2011
Session Initiation Protocol (SIP) INFO Method and Package Framework
Abstract
This document defines a method, INFO, for the Session Initiation
Protocol (SIP), and an Info Package mechanism. This document
obsoletes RFC 2976. For backward compatibility, this document also
specifies a "legacy" mode of usage of the INFO method that is
compatible with the usage previously defined in RFC 2976, referred to
as "legacy INFO Usage" in this document.
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/rfc6086.
Copyright Notice
Copyright (c) 2011 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.
Holmberg, et al. Standards Track [Page 1]
RFC 6086 INFO Framework January 2011
Table of Contents
1. Introduction ....................................................3
1.1. Conventions Used in This Document ..........................4
2. Motivation ......................................................4
3. Applicability and Backward Compatibility ........................5
4. The INFO Method .................................................6
4.1. General ....................................................6
4.2. INFO Request ...............................................6
4.2.1. INFO Request Sender .................................6
4.2.2. INFO Request Receiver ...............................7
4.2.3. SIP Proxies .........................................8
4.3. INFO Message Body ..........................................8
4.3.1. INFO Request Message Body ...........................8
4.3.2. INFO Response Message Body ..........................9
4.4. Order of Delivery ..........................................9
5. Info Packages ...................................................9
5.1. General ....................................................9
5.2. User Agent Behavior .......................................10
5.2.1. General ............................................10
5.2.2. UA Procedures ......................................10
5.2.3. Recv-Info Header Field Rules .......................11
5.2.4. Info Package Fallback Rules ........................12
5.3. REGISTER Processing .......................................12
6. Formal INFO Method Definition ..................................13
6.1. INFO Method ...............................................13
7. INFO Header Fields .............................................15
7.1. General ...................................................15
7.2. Info-Package Header Field .................................15
7.3. Recv-Info Header Field ....................................16
8. Info Package Considerations ....................................16
8.1. General ...................................................16
8.2. Appropriateness of Info Package Usage .....................16
8.3. INFO Request Rate and Volume ..............................16
8.4. Alternative Mechanisms ....................................17
8.4.1. Alternative SIP Signaling Plane Mechanisms .........17
8.4.2. Media Plane Mechanisms .............................18
8.4.3. Non-SIP-Related Mechanisms .........................19
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