Network Working Group P. Saint-Andre
Request for Comments: 4854 XSF
Category: Informational April 2007
A Uniform Resource Name (URN) Namespace for
Extensions to the Extensible Messaging and Presence Protocol (XMPP)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document describes a Uniform Resource Name (URN) namespace for
uniquely identifying Extensible Markup Language (XML) formats and
protocols that provide extensions to the Extensible Messaging and
Presence Protocol (XMPP) and are defined in specifications published
by the XMPP Standards Foundation (XSF).
Saint-Andre Informational [Page 1]RFC 4854 URN Namespace for XMPP Extensions April 2007Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Specification Template . . . . . . . . . . . . . . . . . . . . 3
3. Namespace Considerations . . . . . . . . . . . . . . . . . . . 6
4. Community Considerations . . . . . . . . . . . . . . . . . . . 6
5. Security Considerations . . . . . . . . . . . . . . . . . . . . 7
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1. Normative References . . . . . . . . . . . . . . . . . . . 8
7.2. Informative References . . . . . . . . . . . . . . . . . . 8
Saint-Andre Informational [Page 2]RFC 4854 URN Namespace for XMPP Extensions April 20071. Introduction
While the Extensible Messaging and Presence Protocol (XMPP), as
specified in [XMPP-CORE] and [XMPP-IM], provides basic messaging and
presence functionality, the fact that XMPP is at root a technology
for streaming Extensible Markup Language [XML] data makes it possible
to include virtually any structured information within XMPP, as long
as such information is qualified by appropriate XML namespaces
[XML-NAMES]. When sent over XMPP, such structured data formats and
protocols are generally referred to as "XMPP extensions".
A large number of such XMPP extensions exist. The main standards
development organization in which such extensions are defined is the
XMPP Standards Foundation (XSF) (formerly the Jabber Software
Foundation), which contributed XMPP to the Internet Standards
process. Typically, such extensions are defined within the XSF's
XMPP Extension Protocol (XEP) specification series. To date, the XML
namespaces defined within the Jabber/XMPP community have used names
of the form "jabber:*" (deprecated since early 2002) and
"http://jabber.org/protocol/*" (not including names of the form
"urn:ietf:params:xml:ns:xmpp-*" specified in the XMPP RFCs).
However, it is desirable that names associated with future XMPP
extensions be both unique and persistent, which is not necessarily
the case with names that are also HTTP URLs. Therefore, in
accordance with the process defined in [MECHANISMS], this document
registers a formal namespace identifier (NID) for Uniform Resource
Names [URN] associated with XMPP extensions published in the XSF's
XEP series and for XML namespaces registered with the XSF's XMPP
Registrar function [REGISTRAR].
2. Specification Template
Namespace ID:
The Namespace ID "xmpp" is requested.
Registration Information:
Version 1
Date: 2007-04-27
Declared Registrant of the Namespace:
Registering organization
Organization: XMPP Standards Foundation
Address: P.O. Box 1641, Denver, CO 80201 USA
Saint-Andre Informational [Page 3]RFC 4854 URN Namespace for XMPP Extensions April 2007
Designated contact
Role: XMPP Registrar
Email: registrar@xmpp.org
Declaration of Syntactic Structure:
The Namespace Specific String (NSS) of all URNs that use the
"xmpp" NID shall have the following structure:
urn:xmpp:{ShortName}:{SubName}
The keywords have the following meaning:
(1) the "ShortName" is a required US-ASCII string that
conforms to the URN syntax requirements (see RFC 2141)
datatracker.ietf.org