SIP for Instant Messaging and Presence Leveraging Extensions (simple)

SIP for Instant Messaging and Presence Leveraging Extensions (simple)
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Charter
Last Modified: 2009-03-30

Current Status: Active Working Group

Chair(s):
Hisham Khartabil <[email protected]>
Ben Campbell <[email protected]>

Real-time Applications and Infrastructure Area Director(s):
Robert Sparks <[email protected]>
Cullen Jennings <[email protected]>

Real-time Applications and Infrastructure Area Advisor:
Robert Sparks <[email protected]>

Technical Advisor(s):
Jon Peterson <[email protected]>

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Archive: http://www.ietf.org/mail-archive/web/simple/index.html

Description of Working Group:

This working group focuses on the application of the Session Initiation
Protocol (SIP, RFC 3261) to the suite of services collectively known
as
instant messaging and presence (IMP). The IETF has committed to
producing an interoperable standard for these services compliant to
the
requirements for IM outlined in RFC 2779 (including the security and
privacy requirements there) and in the Common Presence and Instant
Messaging (CPIM) specification, developed within the IMPP working
group. As the most common services for which SIP is used share quite a
bit in common with IMP, the adaptation of SIP to IMP seems a natural
choice given the widespread support for (and relative maturity
of) the SIP standard.

The primary work of this group will be to generate:

1. A proposed standard SIP extension documenting the transport of
Instant Messages in SIP, compliant to the requirements for IM outlined
in RFC 2779, CPIM and in BCP 41 (so that the transport implications of
the extension with respect to network congestion are considered in the
design).

2. A proposed standard SIP event package and any related protocol
mechanisms used to support presence, compliant to the requirements for
presence outlined in RFC 2779 and CPIM.

3. An architecture for the implementation of a traditional
buddylist-based instant messaging and presence application with SIP.
Included might be new mechanisms for message confirmation delivery,
indications for when a party is in the process of typing a message,
secure buddylist manipulation operations, and the extension of the
CPIM
presence format to describe typical IM states. Each of these
mechanisms
will be consistent with a SIP-based architecture, as well as meeting
the constraints otherwise described in this charter.

All SIMPLE proposals fulfilling these goals must document the mappings
of their operation to CPIM. Any SIP extensions proposed in the course
of this development will, after a last call process, be transferred to
the SIP WG for consideration as formal SIP extensions.

The working group will work within the framework for presence and IM
described in RFC 2778. The extensions it defines must also be
compliant
with the SIP processes for extensions. The group cannot modify
baseline
SIP behavior or define a new version of SIP for IM and presence. If
the
group determines that any capabilities requiring an extension to SIP
are needed, the group will seek to define such extensions within the
SIP working group, and then use them here.

The working group will operate in close cooperation with the IMPP
working group, which will be completing CPIM in parallel. The working
group will also cooperate with any other groups defined to standardize
other presence and IM systems, to ensure maximum sharing of
information
and avoid reinvention of the wheel. The working group will cooperate
with the SIP working group, soliciting reviews to ensure its
extensions
meet SIPs requirements. The working group will also collaborate with
the SIP WG to ensure consistent operation of the SUBSCRIBE and NOTIFY
methods across the other applications being defined for its use.

Goals and Milestones:

Done Submission of event package for presence to IESG for
publication as Proposed Standard

Done Submission of watcher information drafts to IESG for
publication as Proposed Standards

Done Submission of proposed event list mechanism to the SIP working
group

Done Submission of requirements for event publishing to the IESG for
publication as Proposed Standard

Done Submission of proposed mechanism for event publishing to the
SIP working group

Done Submission of SIMPLE PIDF profile to IESG for publication as
Proposed Standard

Done Submission of base XCAP draft to IESG for publication as
Proposed Standard

Done Submission of Partial Notification mechanism to IESG for
publication as a Proposed Standard

Done Submission of indication of instant message preparation using
SIP to IESG for publication as a Proposed Standard

Done Submission of XCAP usage for manipulation of presence document
content

Done Submission of XCAP usage for setting presence authorization to
IESG for publication as Proposed Standard

Done Submission of Filtering mechanisms to IESG for publication as a
Proposed Standard

Done Submission of instant messaging session draft to IESG for
publication as a Proposed Standard

Done Submission of instant messaging session relay drafts to IESG
for publication as Proposed Standards

Feb 2007 Submission of proposed mechanisms meeting the advanced
messaging requirements to the IESG or appropriate working group

Feb 2007 Submission of XCAP event package to IESG or appropriate working
group targeting publication as Proposed Standard

Feb 2007 Submission of an Instant Message Disposition Notification
mechanism to the IESG for publication as a Proposed Standard

Mar 2007 Submission of a performance and scalability analysis of the
SIMPLE presence mechanisms to the IESG for publication as
Informational

Jun 2007 Submission of SIMPLE protocol annotated overview draft to IESG
for publication as Informational

Aug 2007 Submission of proposed mechanisms for initiating and managing
Instant Message group chat to the IESG for publication as
Proposed Standard

Aug 2007 Conclusion of SIMPLE

Dec 2009 Submission of additional connection models for MSRP to IESG for
Proposed Standard

Internet-Drafts:

Posted Revised I-D Title <Filename>
------ ------- --------------------------------------------
Feb 2005 Jun 2009 <draft-ietf-simple-xcap-diff-13.txt>
An Extensible Markup Language (XML) Document Format for
Indicating A Change in XML Configuration Access Protocol (XCAP)
Resources

Feb 2007 Jul 2009 <draft-ietf-simple-interdomain-scaling-analysis-07.txt>
Presence Interdomain Scaling Analysis for SIP/SIMPLE

Jun 2007 Mar 2009 <draft-ietf-simple-chat-04.txt>
Multi-party Chat Using the Message Session Relay Protocol
(MSRP)

Jul 2007 Mar 2009 <draft-ietf-simple-simple-05.txt>
SIMPLE made Simple: An Overview of the IETF Specifications for
Instant Messaging and Presence using the Session Initiation
Protocol (SIP)

Feb 2008 Jul 2009 <draft-ietf-simple-intradomain-federation-04.txt>
Models for Intra-Domain Presence and Instant Messaging (IM)
Bridging

Feb 2009 Jan 2009 <draft-ietf-simple-msrp-acm-00.txt>
An Alternative Connection Model for the Message Session Relay
Protocol (MSRP)

Request For Comments:

RFC Stat Published Title
------- -- ----------- ------------------------------------
RFC3856Standard Aug 2004 A Presence Event Package for the Session Initiation
Protocol (SIP)

RFC3857Standard Aug 2004 A Watcher Information Event Template-Package for the
Session Initiation Protocol (SIP)

RFC3858Standard Aug 2004 An Extensible Markup Language (XML) Based Format for
Watcher Information

RFC3994Standard Feb 2005 Indication of Message Composition for Instant Messaging

RFC4481 PS Jul 2006 Timed Presence Extensions to the Presence Information
Data Format (PIDF) to Indicate Status Information for
Past and Future Time Intervals

RFC4480 PS Jul 2006 RPID: Rich Presence Extensions to the Presence
Information Data Format (PIDF)

RFC4482 PS Jul 2006 CIPID: Contact Information in Presence Information Data
Format

RFC4479 PS Jul 2006 A Data Model for Presence

RFC4662 PS Aug 2006 A Session Initiation Protocol (SIP) Event Notification
Extension for Resource Lists

RFC4661 PS Sep 2006 An Extensible Markup Language (XML) Based Format for
Event Notification Filtering

RFC4660 PS Sep 2006 Functional Description of Event Notification Filtering

RFC4825 PS May 2007 The Extensible Markup Language (XML) Configuration
Access Protocol (XCAP)

RFC4826 PS May 2007 Extensible Markup Language (XML) Formats for
Representing Resource Lists

RFC4827 PS May 2007 An Extensible Markup Language (XML) Configuration Access
Protocol (XCAP) Usage for Manipulating Presence Document
Contents

RFC4976 PS Sep 2007 Relay Extensions for the Message Sessions Relay Protocol
(MSRP)

RFC4975 PS Sep 2007 The Message Session Relay Protocol (MSRP)

RFC5025 PS Dec 2007 Presence Authorization Rules

RFC5264 PS Sep 2008 Publication of Partial Presence Information

RFC5263Standard Sep 2008 Session Initiation Protocol (SIP) extension for Partial
Notification of Presence Information

RFC5262 PS Sep 2008 Presence Information Data format (PIDF) Extension for
Partial Presence

RFC5261 PS Sep 2008 An Extensible Markup Language (XML) Patch Operations
Framework Utilizing XML Path Language (XPath) Selectors

RFC5196 PS Sep 2008 Session Initiation Protocol (SIP) User Agent Capability
Extension to Presence Information Data Format (PIDF)

RFC5438 PS Feb 2009 Instant Message Disposition Notification (IMDN)