Hello everybody,
This is my first message to the list, and I hope somebody can help me.
I would like to implement the following scenario using resiprocate and DUM.
UAC B2B(resip) cloud
--------------- ------------------ ----------
|INV(sdp)
|----------------> | |
|183(sdp 1)
|<--------------- | |
|180(w/o sdp)
|<--------------- | ... |
|200 (sdp2)
|<--------------- | |
|ACK
|----------------> | |
In this scenario, my application wishes to send a particular SDP in the message 183 (sdp1), and eliminate it later on in the message 180.
Next, in the message 200, I would like to set a different SDP (sdp2).
Currently, I am trying to use the "provideAnswer(..)" function to
implement it but I am having problems with it. First, I am setting the
sdp1 into the message 183 using this function. This makes the DUM change
from the UAS_EarlyOffer to the UAS_EarlyProvidedAnswer state. But, this
function does not allow me neither remove the sdp1 (in the 180 message) nor
modify it (in the 200 message). When trying to modify it using the
provideAnswer function, DUM generates an assertion due to using
provideAnswer in state: UAS_EarlyProvidedAnswer
Are there any functions that can allow me to implement this scenario? If
so, which are those functions?
If it can not be done this way, could I do something like this using a
re-invite message? If so, which functions should I use to send it?
Note: The UAC doesnt send PRACK.
Thanks in advance,