Currently the API draft does not state that RTP and RTCP IceGatherers need to have the same ufrag/password. Within SDP, this is a requirement since RTP/RTCP share the same m-line.

Also, we have iceTransport.createAssociatedTransport() for creation of an RTCP IceTransport and iceGatherer.createAssociatedGatherer() for creation of an RTCP IceGatherer. If createAssociatedGatherer() is called before createAssociatedTransport, then the RTCP IceTransport can be associated with the RTCP IceGatherer. Otherwise, the RTCP IceTransport and RTCP IceGatherer are not associated until rtcpIceTransport.start() is called. The association enables pruning of an RTCP IceGatherer. This leads me to wonder whether not calling .createAssociatedGatherer first should result in an error.