"To Tag" is not set correctly for reINVITE messages where we have multiple provisional responses are received before session is established

[Hatke Özlem]

Hello,

"To Tag" is not set correctly for reINVITE messages where we have multiple provisional responses are received before session is established.

Scenario is as below:

• Client A calls Client B (registered on two clients).
• Application Server forks this call to Client B.
• Each destination sends 180 Ringing Message to Client A.
• First 180 Ringing message has ToTag=tag1. Second 180 Ringing message has ToTag=tag2.
• After that, client answers call and send 200 OK with ToTag=tag2 for session. 
• Client A sends ACK message with ToTag=tag2.
•  SipSession sipSession = resp.getSession();
•  SipApplicationSession appsession = sipSession.getApplicationSession();
• sipSession and appsession are stored for subsequent messages.
• ACK message is created by using -> resp.createAck().send();
• After call is established, client A holds the call and it sends INVITE message for it by using stored sipsession and appsession.
• SipApplicationSession appSession = sipSessionsUtil.getApplicationSessionById(sipApplicationSessionId);
• SipSession sipSession = appSession.getSipSession(sessionId);
•  SipServletRequest req = sipSession.createRequest("INVITE");
•  req.setContent(contents, "application/sdp");
• req.send();

Whenever second INVITE is created, it is seen that ToTag value in 200 OK with ToTag=tag2 is not used. Instead of that ToTag=tag1 which is received first incoming 180 Ringing message is used.

I expect that mobicents can set ToTag value correctly based on confirmed dialog not early dialog. Is there anything to do or is it a bug for mobicents?

Thanks in advance

Hatke

[Hatke Özlem]

I forget to attach logs and signalling file. Please see attched files. 

[Jean Deruelle]

Did you enable forking ? ie change the value of gov.nist.javax.sip.MAX_FORK_TIME_SECONDS in the sip stack properties file ? because It seems the second ringing is not seen as a fork response by the container stack.

Jean