Disabling idle streams in nginx-rtmp-module

By default nginx-rtmp allows subscribers to connect to any (even nonexistent) stream within application. You can connect to a stream with no publisher in it. When publisher disconnects all subscribers remain connected. That can be controlled with on_play and on_update HTTP notifications. The most recent version of nginx-rtmp has one more way to limit subscribers in idle streams.

The new directive is idle_streams. Default value on is consistent with the current behavior. If turned off subscribers will not be able to connect to idle (not published to) streams and will be disconnected when stream publisher disconnects.

application live {
    live on;
    idle_streams off;
}