findNetworkPrinter function
Implementation
Future<List<String>> findNetworkPrinter({int port = 9100}) async {
final _info = NetworkInfo();
String? ip = await (_info.getWifiIP());
if (ip?.isEmpty == true) {
ip = (await getAddresses()).first;
}
final String subnet = ip!.substring(0, ip.lastIndexOf('.'));
final stream = NetworkAnalyzer.discover2(subnet, port);
var results = await stream.toList();
return [
...results.where((entry) => entry.exists).toList().map((e) => e.ip).toList()
];
}