Webrtc designed to work for point-to-point topology, and thus each rtcp_receiver handles single remote sender. While remote sender ssrc may change, it should be ok to assume the remote endpoint is still the same. Bug: webrtc:12798 Change-Id: I62aebe7ac802306fc7fa17d7bf3959d6d4cca023 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/224548 Reviewed-by: Henrik Boström <hbos@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34407}