onSubscribePrivilegeTokenWillExpire method

FutureOr<void> onSubscribePrivilegeTokenWillExpire()
override

@detail callback @author qipengxiang @brief Callback triggered 30s before the subscribing privilege of the Token expires.
After receiving this callback, you must call updateToken{@link #RTSRoom#updateToken} to update the subscribing privilege Token. @note After a user's subscribing privilege expires, the user will fail to subscribe to new streams, or the subscribed streams will be removed, and he/she will receive onVideoSubscribeStateChanged{@link #IRTCRoomEventHandler#onVideoSubscribeStateChanged}, onAudioSubscribeStateChanged{@link #IRTCRoomEventHandler#onAudioSubscribeStateChanged} with error code "-1003" indicating no permission to subscribe to streams.

Implementation

FutureOr<void> onSubscribePrivilegeTokenWillExpire() async {
  if ($instance == null || $instance is! IRTCRoomEventHandler) {
    return;
  }
  return ($instance as IRTCRoomEventHandler)
      .onSubscribePrivilegeTokenWillExpire
      ?.call();
}