This ticket is related to an old unanswered case (Openthread otUdpSend transmit finish). I need to send a large UDP message in chunks and therefore need to be able to tell when otUdpSend() completes prior to calling again to avoid buffer depletion. So the ask here is, how do I know when the transmit is complete? I have yet to find anything useful in the OpenThread API - at least not in the obvious places.
