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RE: [reSIProcate] 3PCC (Third Party Call Controll) support?


The SVN head revision of resip supports both sending and receiving of
invites without an initial offer.  I'm pretty sure the 0.9 version only
supported the receiving end.

> -----Original Message-----
> From: resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:resiprocate-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> Ilia Krustev
> Sent: Thursday, June 22, 2006 3:31 PM
> To: resiprocate-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [reSIProcate] 3PCC (Third Party Call Controll) support?
> 
> Hi guys,
> 
> I'm trying to use resip::dum (resiprocate-0.9.0-5019) to initiate a
> call while being a third party in the call.
> I need to INVITE party A with no initial SDP (no contents). In this
> case the offer is expected to come from the called party - in the 200
> OK, or earlier.
> I then use this offer to INVITE party B. Finally I send the party B
> answer to party A in my ACK.
> 
> I'm wondering is this supported at all.
> 
> I tried several things to provide to
> DialogUsageManager::makeInviteSession(...) as initial SDP offer:
> 
> 1. Passing null SdpContents* pointer leads to segfault.
> ClientInviteSession calls InviteSession::makeSdp(*initialOffer) and
> tries to copy it.
> 
> 2. Passing pointer to the SdpContents::Empty - does not crash, but
does
> not work either.
> I need no body to be sent, but ill formed SDP content is sent instead.
> 
> 3. Passing Data("") to a SdpContent instance makes it crash when later
> attempts to parse it.
> 
> Is the offer/answer machine prepared for such a case? Can I expect
that
> if I manage to pass through a no-body INVITE, the answer/offer machine
> will handle the case later and will call my onOffer?
> 
> Any suggestions would be greatly appreciated.
> 
> --
> 
> Kind regards,
> Ilia
> 
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