Clients with permission "publish-media" can publish any audio/video. Other
clients need to have "publish-audio" and/or "publish-video" to publish the
corresponding media types. For this the SDP in the offer is parsed to check
what will be sent.
Can happen mostly during tests (e.g. TestClientTakeoverRoomSession)
where the new client could receive the "leave" event that was sent
before it joined the room (but got delivered after joining).
- Individually for each backend.
- For the proxy client (i.e. signaling server using cluster of proxies).
- For the proxy server / MCU.
The smallest bandwidth configured will be used, e.g. if a backend has a
larger limit than the MCU assigned for the stream, the limit of the MCU
server will be used.
