Session Initiation Protocol (SIP) Via Header Field Parameter to Indicate Received Realm
RFC 8055
| Document | Type |
RFC - Proposed Standard
(January 2017; No errata)
Was draft-holmberg-dispatch-received-realm (individual in art area)
|
|
|---|---|---|---|
| Last updated | 2017-01-31 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | Adam Roach | ||
| Shepherd write-up | Show (last changed 2016-10-10) | ||
| IESG | IESG state | RFC 8055 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Ben Campbell | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) C. Holmberg
Request for Comments: 8055 Ericsson
Category: Standards Track Y. Jiang
ISSN: 2070-1721 China Mobile
January 2017
Session Initiation Protocol (SIP) Via Header Field Parameter
to Indicate Received Realm
Abstract
This specification defines a new Session Initiation Protocol (SIP)
Via header field parameter, 'received-realm', which allows a SIP
entity acting as an entry point to a transit network to indicate from
which adjacent upstream network a SIP request is received by using a
network realm value associated with the adjacent network.
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 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/rfc8055.
Copyright Notice
Copyright (c) 2017 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
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described in the Simplified BSD License.
Holmberg & Jiang Standards Track [Page 1]
RFC 8055 Received Realm January 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Use Case: Transit Network Application Services . . . . . 3
1.3. Use Case: Transit Network Routing . . . . . . . . . . . . 4
2. Applicability . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Via 'received-realm' Header Field Parameter . . . . . . . . . 5
5.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.2. Operator Identifier . . . . . . . . . . . . . . . . . . . 5
5.3. JWS Header . . . . . . . . . . . . . . . . . . . . . . . 6
5.4. JWS Payload . . . . . . . . . . . . . . . . . . . . . . . 6
5.5. JWS Serialization . . . . . . . . . . . . . . . . . . . . 7
5.6. Syntax . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.6.1. General . . . . . . . . . . . . . . . . . . . . . . . 8
5.6.2. ABNF . . . . . . . . . . . . . . . . . . . . . . . . 8
5.7. Example: SIP Via Header Field . . . . . . . . . . . . . . 8
6. User Agent and Proxy Behavior . . . . . . . . . . . . . . . . 8
6.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2. Behavior of a SIP Entity Acting as a Network Entry Point 8
6.3. Behavior of a SIP Entity Consuming the 'received-realm'
Value . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7. Example: SIP INVITE Request and Response . . . . . . . . . . 9
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
8.1. 'received-realm' Via Header Field Parameter . . . . . . . 10
8.2. JSON Web Token Claims Registration . . . . . . . . . . . 10
9. Security Considerations . . . . . . . . . . . . . . . . . . . 11
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
10.1. Normative References . . . . . . . . . . . . . . . . . . 11
10.2. Informative References . . . . . . . . . . . . . . . . . 12
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
Holmberg & Jiang Standards Track [Page 2]
RFC 8055 Received Realm January 2017
1. Introduction
1.1. General
When Session Initiation Protocol (SIP) [RFC3261] sessions are
established between networks belonging to different operators or
between interconnected networks belonging to the same operator (or
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