SIP for Instant Messaging and Presence Leveraging Extensions (simple) --------------------------------------------------------------------- Charter Last Modified: 2006-03-24 Current Status: Active Working Group Chair(s): Robert Sparks Hisham Khartabil Real-time Applications and Infrastructure Area Director(s): Jon Peterson Cullen Jennings Real-time Applications and Infrastructure Area Advisor: Jon Peterson Technical Advisor(s): Jon Peterson Mailing Lists: General Discussion:simple@ietf.org To Subscribe: simple-request@ietf.org In Body: subscribe 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 May 2004 Submission of SIMPLE PIDF profile to IESG for publication as Proposed Standard May 2004 Submission of base XCAP draft to IESG for publication as Proposed Standard May 2004 Submission of XCAP event package to IESG for for publication as Proposed Standard May 2004 Submission of Partial Notification mechanism to IESG for publication as a Proposed Standard May 2004 Submission of indication of instant message preparation using SIP to IESG for publication as a Proposed Standard Jun 2004 Submission of XCAP usage for manipulation of presence document content Jun 2004 Submission of XCAP usage for setting presence authorization to IESG for publication as Proposed Standard Jul 2004 Submission of Filtering mechanisms to IESG for publication as a Proposed Standard Jul 2004 Submission of CPIM mapping draft to IESG for publication as Informational Jul 2004 Submission of instant messaging session draft to IESG for publication as a Proposed Standard Jul 2004 Submission of instant messaging session relay drafts to IESG for publication as Proposed Standards Aug 2004 Submission of advanced messaging requirements draft to IESG for publication as Informational Sep 2004 Submission of proposed mechnisms meeting the advanced messaging requirements to the IESG or appropriate working group Sep 2004 Submission of Presence/IM System Architecture draft to IESG for publication as Informational Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- May 2003 Feb 2007 The Message Session Relay Protocol Jun 2003 Oct 2006 The Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Jun 2003 Feb 2005 Extensible Markup Language (XML) Formats for Representing Resource Lists Sep 2003 Feb 2007 Session Initiation Protocol (SIP) extension for Partial Notification of Presence Information Jan 2004 Nov 2006 Presence Information Data format (PIDF) Extension for Partial Presence Feb 2004 Jul 2006 Session Initiation Protocol (SIP) User Agent Capability Extension to Presence Information Data Format (PIDF) May 2004 Mar 2007 Presence Authorization Rules May 2004 Oct 2004 An Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Usage for Manipulating Presence Document Contents May 2004 Dec 2006 Relay Extensions for the Message Sessions Relay Protocol (MSRP) Oct 2004 Feb 2007 Publication of Partial Presence Information Feb 2005 Mar 2007 An Extensible Markup Language (XML) Document Format for Indicating A Change in XML Configuration Access Protocol (XCAP) Resources Nov 2005 Mar 2006 An Extensible Markup Language (XML) Patch Operations Framework Utilizing XML Path Language (XPath) Selectors May 2006 Feb 2007 Instant Message Disposition Notification Feb 2007 Feb 2007 Problem Statement for SIP/SIMPLE 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