No way to embed ice candidate in webrtc-answer

[ronenc]

I'm working with a device peer that does not implement trickle ice.
My side is a uwp application that receives an offer from the remote device peer.
The offer includes ice candidates and the peer expects my side ice candidates included in the answer.
Since there is no access to local description, there is no way to wait for the candidate to be populated into the answer.
Is there a way to disable the trickle ice option or to overcome this issue in other way?

Thanks