Mapping the Extensible Messaging and Presence Protocol (XMPP) to Common Presence and Instant Messaging (CPIM)
RFC 3922
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RFC - Proposed Standard
(October 2004; No errata)
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2015-10-14
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RFC 3922 (Proposed Standard)
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Scott Hollenbeck
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Network Working Group P. Saint-Andre
Request for Comments: 3922 Jabber Software Foundation
Category: Standards Track October 2004
Mapping the Extensible Messaging and Presence Protocol (XMPP) to
Common Presence and Instant Messaging (CPIM)
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This memo describes a mapping between the Extensible Messaging and
Presence Protocol (XMPP) and the Common Presence and Instant
Messaging (CPIM) specifications.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Address Mapping . . . . . . . . . . . . . . . . . . . . . . . 4
4. Syntax Mapping of Instant Messages . . . . . . . . . . . . . . 5
5. Syntax Mapping of Presence Information . . . . . . . . . . . . 13
6. XMPP-CPIM Gateway as Presence Service . . . . . . . . . . . . 26
7. Security Considerations . . . . . . . . . . . . . . . . . . . 31
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 33
Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 34
Saint-Andre Standards Track [Page 1]
RFC 3922 XMPP to CPIM October 2004
1. Introduction
1.1. Overview
The Instant Messaging and Presence (IMPP) Working Group has defined
an abstract framework for interoperability among instant messaging
(IM) and presence systems that are compliant with [IMP-REQS]. This
framework is commonly called Common Presence and Instant Messaging or
"CPIM". The CPIM family of specifications include a Common Profile
for Instant Messaging [CPIM] (also called CPIM), a Common Profile for
Presence [CPP], a CPIM Message Format [MSGFMT], and a Common Presence
Information Data Format [PIDF]. (Note: To prevent confusion, Common
Presence and Instant Messaging is referred to herein collectively as
"the CPIM specifications", whereas the Common Profile for Instant
Messaging is referred to as "CPIM".)
This memo describes how the Extensible Messaging and Presence
Protocol ([XMPP-CORE], [XMPP-IM]) maps to the abstract model
contained in the CPIM specifications, mainly for the purpose of
establishing gateways between XMPP services and non-XMPP services
that conform to [IMP-REQS]. Such a gateway, referred to herein as an
"XMPP-CPIM gateway", may be established to interpret the protocols of
one service and translate them into the protocols of the other
service. We can visualize this relationship as follows:
+-------------+ +-------------+ +------------+
| | | | | |
| XMPP | | XMPP-CPIM | | Non-XMPP |
| Service | <----> | Gateway | <----> | Service |
| | | | | |
+-------------+ +-------------+ +------------+
This memo defines a mapping for use by a gateway that translates
between XMPP and a non-XMPP protocol via the CPIM specifications.
Such a gateway is not an intermediate hop on a network of non-XMPP
servers (whose native formats may or may not be defined by the CPIM
specifications), but a dedicated translator between XMPP and a
non-XMPP protocol, where the CPIM specifications define the common
formats into which the protocols are translated for purposes of
interworking.
The mapping defined herein applies to instant messages and presence
information that are not encrypted or signed for end-to-end security.
For information about secure communications to or from an XMPP
service through an XMPP-CPIM gateway, refer to [XMPP-E2E].
Saint-Andre Standards Track [Page 2]
RFC 3922 XMPP to CPIM October 2004
1.2. Terminology
This memo inherits vocabulary defined in [IMP-MODEL]. Terms such as
CLOSED, INSTANT INBOX, INSTANT MESSAGE, OPEN , PRESENCE SERVICE,
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