{"draft":"draft-ietf-sipcore-invfix-01","doc_id":"RFC6026","title":"Correct Transaction Handling for 2xx Responses to Session Initiation Protocol (SIP) INVITE Requests","authors":["R. Sparks","T. Zourzouvillys"],"format":["ASCII","HTML"],"page_count":"20","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Session Initiation Protocol Core RAI","abstract":"This document normatively updates RFC 3261, the Session Initiation\r\nProtocol (SIP), to address an error in the specified handling of\r\nsuccess (2xx class) responses to INVITE requests.  Elements following\r\nRFC 3261 exactly will misidentify retransmissions of the request as a\r\nnew, unassociated request.  The correction involves modifying the\r\nINVITE transaction state machines.  The correction also changes the\r\nway responses that cannot be matched to an existing transaction are\r\nhandled to address a security risk.  [STANDARDS-TRACK]","pub_date":"September 2010","keywords":["[--------]","state machine","retransmission"],"obsoletes":[],"obsoleted_by":[],"updates":["RFC3261"],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC6026","errata_url":"https:\/\/www.rfc-editor.org\/errata\/rfc6026"}