Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses
RFC 7976
| Document | Type |
RFC - Informational
(September 2016; Errata)
Updates RFC 7315
Was draft-holmberg-dispatch-rfc7315-updates (individual)
|
|
|---|---|---|---|
| Authors | Christer Holmberg , Nevenka Biondic , Gonzalo Salgueiro | ||
| Last updated | 2018-12-20 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | Jean Mahoney | ||
| Shepherd write-up | Show (last changed 2016-05-18) | ||
| IESG | IESG state | RFC 7976 (Informational) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Ben Campbell | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IANA Actions | ||
Internet Engineering Task Force (IETF) C. Holmberg
Request for Comments: 7976 N. Biondic
Updates: 7315 Ericsson
Category: Informational G. Salgueiro
ISSN: 2070-1721 Cisco
September 2016
Updates to Private Header (P-Header) Extension Usage
in Session Initiation Protocol (SIP) Requests and Responses
Abstract
The Third Generation Partnership Project (3GPP) has identified cases
where different SIP private header extensions referred to as "P-"
header fields, and defined in RFC 7315, need to be included in SIP
requests and responses currently not allowed according to RFC 7315.
This document updates RFC 7315, in order to allow inclusion of the
affected "P-" header fields in such requests and responses.
This document also makes updates for RFC 7315 in order to fix
misalignments that occurred when RFC 3455 was updated and obsoleted
by RFC 7315.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 7841.
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/rfc7976.
Holmberg, et al. Informational [Page 1]
RFC 7976 Updates to P-Header Usage September 2016
Copyright Notice
Copyright (c) 2016 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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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Misalignments and 3GPP Use Cases . . . . . . . . . . . . . . 3
2.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Misalignments . . . . . . . . . . . . . . . . . . . . . . 3
2.3. 3GPP Use Cases . . . . . . . . . . . . . . . . . . . . . 4
2.3.1. General . . . . . . . . . . . . . . . . . . . . . . . 4
2.3.2. P-Access-Network-Info . . . . . . . . . . . . . . . . 4
2.3.3. P-Charging-Vector . . . . . . . . . . . . . . . . . . 5
3. Updates to RFC 7315 . . . . . . . . . . . . . . . . . . . . . 6
4. Security Considerations . . . . . . . . . . . . . . . . . . . 7
5. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1. Normative References . . . . . . . . . . . . . . . . . . 7
5.2. Informative References . . . . . . . . . . . . . . . . . 8
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
The Third Generation Partnership Project (3GPP) has identified cases
where different Session Initiation Protocol (SIP) [RFC3261] private
header extensions referred to as "P-" header fields, and defined in
[RFC7315], need to be included in SIP requests and responses
currently not allowed according to RFC 7315. This document updates
RFC 7315, in order to allow inclusion of the affected "P-" header
fields in such requests and responses.
This document also makes updates for RFC 7315 in order to fix
misalignments that occurred when RFC 3455 [RFC3455] was updated and
obsoleted by RFC 7315.
Holmberg, et al. Informational [Page 2]
RFC 7976 Updates to P-Header Usage September 2016
As the "P-" header fields are mainly used in (and in most cases, only
defined for) networks defined by the 3GPP, where the updates defined
in this document are already defined [TS.3GPP.24.229], the updates
are not seen to cause backward-compatibility concerns.
2. Misalignments and 3GPP Use Cases
2.1. General
RFC 7315 contains contradicting statements regarding the usage of SIP
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