A Session Identifier for the Session Initiation Protocol (SIP)
RFC 7329
Document | Type |
RFC - Informational
(August 2014; No errata)
Obsoleted by RFC 7989
Was draft-kaplan-insipid-session-id (individual in rai area)
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|
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Author | Hadriel Kaplan | ||
Last updated | 2018-12-20 | ||
Replaces | draft-kaplan-dispatch-session-id | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | Gonzalo Salgueiro | ||
Shepherd write-up | Show (last changed 2013-08-02) | ||
IESG | IESG state | RFC 7329 (Informational) | |
Consensus Boilerplate | No | ||
Telechat date | |||
Responsible AD | Richard Barnes | ||
Send notices to | insipid-chairs@ietf.org | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) H. Kaplan Request for Comments: 7329 Oracle Category: Informational August 2014 ISSN: 2070-1721 A Session Identifier for the Session Initiation Protocol (SIP) Abstract There is a need for having a globally unique session identifier for the same SIP session that can be consistently maintained across SIP Proxies, Back-to-Back User Agents (B2BUAs), and other SIP middleboxes, for the purpose of troubleshooting. This document proposes a new SIP header to carry such a value: Session-ID. The mechanism defined in this document has been widely deployed, and is being followed in a backward-compatible fashion for a new Standards Track document produced by the INSIPID Working Group. 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 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/rfc7329. Kaplan Informational [Page 1] RFC 7329 SIP Session Identifier August 2014 Copyright Notice Copyright (c) 2014 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. Table of Contents 1. Introduction ....................................................3 1.1. Requirements ...............................................4 2. Terminology .....................................................4 3. Overview of Operation ...........................................4 4. Session-ID Behavior .............................................5 4.1. Generating a Session-ID Value ..............................5 4.2. UAC Behavior ...............................................6 4.3. UAS Behavior ...............................................6 4.4. Proxy Behavior .............................................6 4.5. B2BUA Behavior .............................................7 4.5.1. B2BUA Generation of New Session-ID ..................8 4.5.2. B2BUA Insertion of Saved Session-ID .................8 5. Handling SIP Transfer Scenarios .................................8 5.1. Out-of-Dialog REFER ........................................9 5.2. Refer-To URI ...............................................9 5.3. Out-of-Dialog INVITE with Replaces .........................9 6. Session-ID Migration and Failure Scenarios .....................10 7. New 'Session-ID' Header ........................................11 7.1. Augmented BNF Definitions .................................11 8. Example Exchange ...............................................11 9. Security Considerations ........................................11 9.1. Security Considerations for Administrators ................12 9.2. Security Considerations for Session-ID Extensions .........12 10. IANA Considerations ...........................................13 11. Acknowledgments ...............................................13 12. References ....................................................13 12.1. Normative References .....................................13 12.2. Informative References ...................................14 Appendix A. Use Cases Not in Scope for Session-ID .................15 A.1. Dialog Correlation for SIP ................................15 Kaplan Informational [Page 2] RFC 7329 SIP Session Identifier August 2014 1. Introduction This RFC, which contains the text of an individual Internet-Draft that was submitted originally to the DISPATCH Working Group, is being published now as an Informational document to provide a reference forShow full document text