The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)
RFC 7118
|
| Document |
Type |
|
RFC - Proposed Standard
(January 2014; No errata)
|
|
Last updated |
|
2015-10-14
|
|
Replaces |
|
draft-ibc-sipcore-sip-websocket
|
|
Stream |
|
IETF
|
|
Formats |
|
plain text
pdf
html
bibtex
|
|
Reviews |
|
|
| Stream |
WG state
|
|
WG Document
(wg milestone:
Apr 2013 - WebSockets transport...
)
|
|
Document shepherd |
|
Paul Kyzivat
|
| IESG |
IESG state |
|
RFC 7118 (Proposed Standard)
|
|
Consensus Boilerplate |
|
Unknown
|
|
Telechat date |
|
|
|
Responsible AD |
|
Richard Barnes
|
|
IESG note |
|
Paul Kyzivat (pkyzivat@alum.mit.edu) is the document shepherd.
|
|
Send notices to |
|
(None)
|
| IANA |
IANA review state |
|
Version Changed - Review Needed
|
|
IANA action state |
|
RFC-Ed-Ack
|
Internet Engineering Task Force (IETF) I. Baz Castillo
Request for Comments: 7118 J. Millan Villegas
Category: Standards Track Versatica
ISSN: 2070-1721 V. Pascual
Quobis
January 2014
The WebSocket Protocol as a Transport for the
Session Initiation Protocol (SIP)
Abstract
The WebSocket protocol enables two-way real-time communication
between clients and servers in web-based applications. This document
specifies a WebSocket subprotocol as a reliable transport mechanism
between Session Initiation Protocol (SIP) entities to enable use of
SIP in web-oriented deployments.
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/rfc7118.
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.
Baz Castillo, et al. Standards Track [Page 1]
RFC 7118 WebSocket as a Transport for SIP January 2014
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Definitions . . . . . . . . . . . . . . . . . . . . . . . 3
3. The WebSocket Protocol . . . . . . . . . . . . . . . . . . . 3
4. The WebSocket SIP Subprotocol . . . . . . . . . . . . . . . . 4
4.1. Handshake . . . . . . . . . . . . . . . . . . . . . . . . 4
4.2. SIP Encoding . . . . . . . . . . . . . . . . . . . . . . 5
5. SIP WebSocket Transport . . . . . . . . . . . . . . . . . . . 6
5.1. Via Transport Parameter . . . . . . . . . . . . . . . . . 6
5.2. SIP URI Transport Parameter . . . . . . . . . . . . . . . 6
5.3. Via "received" Parameter . . . . . . . . . . . . . . . . 7
5.4. SIP Transport Implementation Requirements . . . . . . . . 7
5.5. Locating a SIP Server . . . . . . . . . . . . . . . . . . 8
6. Connection Keep-Alive . . . . . . . . . . . . . . . . . . . . 8
7. Authentication . . . . . . . . . . . . . . . . . . . . . . . 8
8. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.1. Registration . . . . . . . . . . . . . . . . . . . . . . 10
8.2. INVITE Dialog through a Proxy . . . . . . . . . . . . . . 12
9. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9.1. Secure WebSocket Connection . . . . . . . . . . . . . . . 16
9.2. Usage of "sips" Scheme . . . . . . . . . . . . . . . . . 16
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
10.1. Registration of the WebSocket SIP Subprotocol . . . . . 16
10.2. Registration of New NAPTR Service Field Values . . . . . 17
10.3. SIP/SIPS URI Parameters Subregistry . . . . . . . . . . 17
10.4. Header Fields Subregistry . . . . . . . . . . . . . . . 17
10.5. Header Field Parameters and Parameter Values Subregistry 17
10.6. SIP Transport Subregistry . . . . . . . . . . . . . . . 18
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 18
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
12.1. Normative References . . . . . . . . . . . . . . . . . . 18
12.2. Informative References . . . . . . . . . . . . . . . . . 19
Appendix A. Authentication Use Cases . . . . . . . . . . . . . . 21
A.1. Just SIP Authentication . . . . . . . . . . . . . . . . . 21
A.2. Just Web Authentication . . . . . . . . . . . . . . . . . 21
A.3. Cookie-Based Authentication . . . . . . . . . . . . . . . 22
Appendix B. Implementation Guidelines . . . . . . . . . . . . . 22
Show full document text