I-D Action:draft-ietf-sipcore-invfix-01.txt

Internet-Drafts@ietf.org Mon, 08 March 2010 03:30 UTC

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Subject: I-D Action:draft-ietf-sipcore-invfix-01.txt
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Date: Sun, 07 Mar 2010 19:30:01 -0800
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Protocol Core Working Group of the IETF.


	Title           : Correct transaction handling for 2xx responses to Session Initiation Protocol (SIP) INVITE requests
	Author(s)       : R. Sparks, T. Zourzouvillys
	Filename        : draft-ietf-sipcore-invfix-01.txt
	Pages           : 20
	Date            : 2010-03-07

This document normatively updates RFC 3261, the Session Initiation
Protocol (SIP), to address an error in the specified handling of
success (2xx class) responses to INVITE requests.  Elements following
RFC 3261 exactly will misidentify retransmissions of the request as a
new, unassociated, request.  The correction involves modifying the
INVITE transaction state machines.  The correction also changes the
way responses that cannot be matched to an existing transaction are
handled to address a security risk.

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