nsd
A Flutter plugin for network service discovery and registration (aka NSD / DNS-SD / Bonjour / mDNS).
Service Discovery
import 'package:nsd/nsd.dart';
final discovery = await startDiscovery('_http._tcp');
discovery.addListener(() {
// discovery.services contains discovered services
});
// ...
await stopDiscovery(discovery);
Service Registration
import 'package:nsd/nsd.dart';
final registration = await register(
const Service(name: 'Foo', type: '_http._tcp', port: 56000));
// ...
await unregister(registration);
Example App

The plugin includes an example application that can be used to start multiple discoveries
and register multiple services. It will discover its own services but also other services of type
_http._tcp
in the local network, such as the printer in the screenshot above.
- Use the action button to add a discovery or register a new service.
- Swipe the cards left or right to dismiss a discovery or service.
- The application log will show the calls and callbacks platform side vs. native side.
- The source code demonstrates how to use the discovery object as a ChangeNotifier.