void WaitingFor200OkWithMediaOffer::ProvisionalResponse( DialogTracker& impl, SipMessage& response, const char* address, int port ) const
{
if( response.getResponseStatusCode() != SIP_TRYING_CODE )
{
// RFC requires that all SDP previews be identical. In ensure that this
// requirement is met, we apply the saved copy of the patched SDP preview
// to the response.
if( response.hasSdpBody() )
{
impl.applyPatchedSdpPreview( response );
}
// we are receiving a provisional response - check if it is sent reliably...
if( response.getHeaderValue( 0, SIP_RSEQ_FIELD ) )
{
// Presence of RSeq: header in the message indicates that it is sent reliably
ChangeState( impl, impl.pWaitingForPrackWithMediaAnswer );
}
else
{
// We have received an unreliable provisional response - although that does
// not cause a state machine state change, we need to reset the tick counter
// to show that there is still activity in this dialog.
impl.resetTimerTickCounter();
}
}
}
void WaitingFor200OkWithMediaOffer::SuccessfulResponse( DialogTracker& impl, SipMessage& response, const char* address, int port ) const
{
// RFC requires that all SDP previews be identical. In ensure that this
// requirement is met, we apply the saved copy of the patched SDP preview
// to the response.
if( response.hasSdpBody() )
{
impl.applyPatchedSdpPreview( response );
}
ChangeState( impl, impl.pWaitingForAckWithAnswerForInvite );
}