Technical Summary
This document defines a mechanism whereby the Session Initiation
Protocol (SIP) Event Framework can be used to provide notification
of changes to the state of resources available through the
Hypertext Transport Protocol (HTTP). This facilitates the
development of applications that provide near real time updates to
information through HTTP without frequent polling or continuously
open transport connections.
Working Group Summary
This is not a Working Group document - it is an individual
submission, but has received review from participants active in the
SIP and HTTP communities. Based on discussion on the DISPATCH
working group list during the summer of 2009, a consensus was
reached that it was close enough to complete that a Working Group
was not needed, but a separate list [1] was created to complete the
work.
Document Quality
There is not yet significant implementation of this protocol, but
it has been incorporated as a key component in the SIP Forum User
Agent Configuration Recommendation (currently in SIP Forum Last
Call); a number of implementations of that recommendation are
believed to be in progress.
[1]
http://www.ietf.org/mail-archive/web/sip-http-events/current/maillist.html
Personnel
Scott Lawrence <scottlawrenc@avaya.com> is the Document Shepherd.
Alexey Melnikov is the Responsible Area Director.