Hi, I just mean that if we treat F3 as sub-transaction of F1, then after F7(ACK), UAC can discard refreshed dialog state in F3.
And it may make the two parts can not communicate anymore in current dialog. And IMO, this is a counterevidence for treating all UPDATE(during Re-INVITE) as sub-transaction of Re-INVITE. Gao "Christer Holmberg" <[email protected]> 2009-03-12 15:31 收件人 <[email protected]>, "SIP" <[email protected]>, "SIPPING" <[email protected]> 抄送 "Gonzalo Camarillo" <[email protected]> 主题 RE: One chart //"UPDATE during Re-INVITE" discussion In my opinion 487 should trigger whatever actions/rollback that any other non-200 response sent by the UAS would. Regards, Christer From: [email protected] [mailto:[email protected]] Sent: 12. maaliskuuta 2009 5:47 To: SIP; SIPPING Cc: Christer Holmberg; Gonzalo Camarillo Subject: One chart //"UPDATE during Re-INVITE" discussion UAC UAS | session established | |<===================>| | | | F1 re-INVITE (SDP) | |-------------------->| | F2 1xx-rel (SDP) | |<--------------------| | F3 UPDATE | |<--------------------| Target refreshing | F4 2xx UPT | |-------------------->| | | | F5/6 Cancel/200OK | |-------------------->| | F7 487 INV | |<--------------------| | F7 ACK | |-------------------->| | F8 re-INVITE (SDP) | |-------------------->| Using which dialog state F3/F4 is about target refreshing. And if UAC sends Cancel， UAS sends 487. The first Re-INVITE is discarded. But if UAC sends another Re-INVITE, which dialog state should it use? I think is the one refreshed by F3. That's the merit of regarding UPDATE/200OK's atomicity. -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail is solely property of the sender's organization. This mail communication is confidential. Recipients named above are obligated to maintain secrecy and are not permitted to disclose the contents of this communication to others. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the originator of the message. Any views expressed in this message are those of the individual sender. This message has been scanned for viruses and Spam by ZTE Anti-Spam system. -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail is solely property of the sender's organization. This mail communication is confidential. Recipients named above are obligated to maintain secrecy and are not permitted to disclose the contents of this communication to others. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the originator of the message. Any views expressed in this message are those of the individual sender. This message has been scanned for viruses and Spam by ZTE Anti-Spam system.
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