Re: [reSIProcate] ACK is getting generated by DUM

["Scott Godin" <slgodin@xxxxxxxxxxxx>]

There are 2 invite sessions in this scenario.  Each invite session is either a ClientInviteSession or a ServerInviteSession, but never both.  DUM will not maintain any mapping between the two legs of a B2B call – that is your applications responsibility.  Once you are tracking the 2 InviteSessions as belonging to the same B2BUA call, you can look up one from the other’s callbacks and call end appropriately on the correct invite session.

 

Scott

 

From: resiprocate-devel-bounces@xxxxxxxxxxxxxxx [mailto:resiprocate-devel-bounces@xxxxxxxxxxxxxxx] On Behalf Of Sandeep Ammaladinna
Sent: April 2, 2008 2:43 AM
To: resiprocate-devel@xxxxxxxxxxxxxxx
Subject: [reSIProcate] ACK is getting generated by DUM

 

Hi,

 I am implementing a B2BUA over DUM. I figured out that DUM is generating an

ACK when it gets a 200 OK (from the terminating user agent). But as per RFC

3261 the originating user agent must send the ACK. The problem I am facing is

suppost the B2BUA/DUM generates an ACK and if the originating user agent does

not send an ACK (within the timeout period), the call back

"onAckNotReceived(InviteSessionHandle)" will be called. The InviteSessionHandle

provides me the way to end (send BYE) the originating User agent only. I dont

have a way to end the terminating user agent, who has already got the ACK from

DUM/B2BUA.

I also tried something like this"

void

InviteSessHandler::onAckNotReceived(InviteSessionHandle ish) {

    InfoLog(<< "AckNotReceived : Invite Session");

    //This will just end the originating UA 

        ish->end(InviteSession::AckNotReceived);

   //Below is the procedure to end the terminating UA

   ClientInviteSession *client_is = dynamic_cast

                                    <ClientInviteSession*>(ish.get());

   if(!(client_is)) {

       CritLog( << "ClientInviteSession Not Found" << endl );

       return ;

   }

   ClientInviteSessionHandle client_ish = client_is->getHandle();

   client_ish->end();

}

But whenever I typecast InviteSessionHandle to ClientInviteSession, I get an

error message saying "ClientInviteSession Not Found".

Please help me how to get rid of the issue.

-Sandeep A