Laravel - Broadcasting - Customizing The Connection

If your application interacts with multiple broadcast connections and you want to broadcast an event using a broadcaster other than your default, you may specify which connection to push an event to using the via method:

    use App\Events\OrderShipmentStatusUpdated;
    broadcast(new OrderShipmentStatusUpdated($update))->via('pusher');

Alternatively, you may specify the event's broadcast connection by calling the broadcastVia method within the event's constructor. However, before doing so, you should ensure that the event class uses the InteractsWithBroadcasting trait: