How to use multicast networking in your app

1 · Apple · June 22, 2020, 8 p.m.
Apps use multicast networking to see and talk to other devices on their local networks. For example, an app might discover smart lightbulbs connected to a person’s Wi-Fi network and send them messages to turn on or off the lights. While the ability to discover and communicate with all devices on a local network is a powerful tool, those devices may carry sensitive personal information that could be used to build a marketing profile or to predict when people might be at home. iOS 14 brings transp...