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[reSIProcate] Fw: Fw: CANCEL before provisional recieved.


----- Forwarded by Volodymyr Stepanov/R&D Ukraine on 10.05.2007 10:18 -----
Volodymyr Stepanov/R&D Ukraine

10.05.2007 10:18

To
"Scott Godin" <slgodin@xxxxxxxxxxxx>
cc
Subject
RE: [reSIProcate] Fw:  CANCEL before provisional recieved.Link




But on this stage I don't have valid invite session :(

resip::InviteSessionHandle handle = m_pDum->findInviteSession(*m_currOutgInviteId);
                        if (handle.isValid())
                        {
                                DebugLog(<< "CSipWorker::HangCall: handle.isValid() - handle->getAppDialogSet()->end()");
                                handle->getAppDialogSet()->end();
                                DebugLog(<< "CSipWorker::HangCall: handle.isValid() - handle->getAppDialogSet()->end() finished");
                        }
else if (m_outgInviteMsg && !m_outgInviteMsg->isInvalid()  
                               && m_outgInviteMsg->isRequest()
                               && (pSession->GetState() != eUnreachable)
                               && (pSession->GetState() != eBusy)
                               && (pSession->GetState() != eDisconnected))
                       {
                               std::cout<<"CSipWorker::HangCall: Send cancel";
                               resip::SipMessage* pCancelMessage = resip::Helper::makeCancel(*m_outgInviteMsg);
                               
                               resip::SharedPtr<resip::SipMessage> pShCancelMessage(pCancelMessage);
                               m_pDum->send(pShCancelMessage);
                               m_outgInviteMsg = NULL;
                               DebugLog(<< "CSipWorker::HangCall: Send cancel finished");
                       }


Is it completely wrong?
Thanks!
Best regards,

Volodymyr Stepanov
MSN : stepanov_v_m@xxxxxxxxxxx
ICQ : 272708933


"Scott Godin" <slgodin@xxxxxxxxxxxx>

08.05.2007 16:48

To
<Volodymyr.Stepanov@xxxxxxxxxxx>, "Byron Campen" <bcampen@xxxxxxxxxxxx>
cc
<resiprocate-devel@xxxxxxxxxxxxxxxxxxxx>
Subject
RE: [reSIProcate] Fw:  CANCEL before provisional recieved.





If you use AppDialogSet::end() to CANCEL the call end this is all taken care of for you:
https://www.resiprocate.org/DUM_Ending_an_Invite_Session
 
 
From: resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Volodymyr.Stepanov@xxxxxxxxxxx
Sent: Tuesday, May 08, 2007 3:28 AM
To: Byron Campen
Cc: resiprocate-devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [reSIProcate] Fw: CANCEL before provisional recieved.
 

if (m_outgInviteMsg && !m_outgInviteMsg->isInvalid()  
                               && m_outgInviteMsg->isRequest()
                               && (pSession->GetState() != eUnreachable)
                               && (pSession->GetState() != eBusy)
                               && (pSession->GetState() != eDisconnected))
                       {
                               std::cout<<"CSipWorker::HangCall: Send cancel";
                               resip::SipMessage* pCancelMessage = resip::Helper::makeCancel(*m_outgInviteMsg);
                               
                               resip::SharedPtr<resip::SipMessage> pShCancelMessage(pCancelMessage);
                               m_pDum->send(pShCancelMessage);
                               m_outgInviteMsg = NULL;
                               DebugLog(<< "CSipWorker::HangCall: Send cancel finished");
                       }


That's all application do to signal about tear down the call.(maybe something erong here too? :) )

Probably I should change my app architecture to provide ability to send "some sort of note-to-self to send a CANCEL once a provisional comes in",

Best regards,


MSN : stepanov_v_m@xxxxxxxxxxx
ICQ : 272708933

Byron Campen <bcampen@xxxxxxxxxxxx>

07.05.2007 23:24


To
Volodymyr.Stepanov@xxxxxxxxxxx
cc
<resiprocate-devel@xxxxxxxxxxxxxxxxxxxx>
Subject
Re: [reSIProcate] Fw:  CANCEL before provisional recieved.

 







What is your app doing to signal its intent to tear down the call?

Best regards,
Byron Campen


Yes,I'm using DUM ...
Any suggestions?

Best regards,

Volodymyr Stepanov

Byron Campen <bcampen@xxxxxxxxxxxx>
Sent by: resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxxx

04.05.2007 18:05

 


To
Volodymyr.Stepanov@xxxxxxxxxxx
cc
resiprocate-devel <resiprocate-devel@xxxxxxxxxxxxxxxxxxxx>
Subject
Re: [reSIProcate] Fw:  CANCEL before provisional recieved.

 








Are you using DUM? I got the impression that this was not the case.

Best regards,
Byron Campen

FYI - DUM should be handling all of this.

 

From: resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Byron Campen
Sent: Friday, May 04, 2007 10:44 AM
To: Volodymyr.Stepanov@xxxxxxxxxxx
Cc: resiprocate-devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [reSIProcate] Fw: CANCEL before provisional recieved.

 

          If you are going to freeze the CANCEL transaction, it needs to be done at the TU. So, if your app decides to end a call, it needs to put some sort of note-to-self to send a CANCEL once a provisional comes in, and if a final response comes in, to send a BYE.

 

Best regards,

Byron Campen

Byron Campen <bcampen@xxxxxxxxxxxx>

04.05.2007 16:53

 


To
Volodymyr.Stepanov@xxxxxxxxxxx
cc
<resiprocate-devel@xxxxxxxxxxxxxxxxxxxx>
Subject
Re: [reSIProcate] Fw:  CANCEL before provisional recieved.

 

 






Sending a CANCEL before a provisional response is invalid behavior. Right now, the stack forges a CANCEL/200 and sends it to the TU, but does not allow the CANCEL to hit the wire. From here, if B never sends a provisional, the INVITE transaction will time-out, causing the stack to send a simulated INVITE/408. However, if B does respond, the call will continue normally. (This is something a TU must be prepared to handle; just because you get a CANCEL/200 doesn't mean the remote UAS will end the INVITE transaction.) If B does send a provisional, but never sends a final response, it is up to A to decide at what point it wishes to end the transaction. (The TU does this by sending a CANCEL; this will cause the stack to put a CANCEL on the wire, and start a timer that will cause the INVITE transaction to be torn down, if it never gets a response)

Best regards,
Byron Campen





Lets try again :)
B sends provisional,but there is large time gap between A INVITEs and  B receives this INVITE, and answers back.
I know that sending CANCEL before provisional is incorrect.
I trying to find "standart" solution for ,maybe, waiting for provisional or "freeze" CANCEL transaction.
Maybe there is another way to deal with my problem?
Thanks.

Sorry :)

MSN : stepanov_v_m@xxxxxxxxxxx
ICQ : 272708933_______________________________________________
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