import 'package:vpn_check/vpn_check.dart';

final vpnChecker = VPNChecker();
bool isVpnActive = false;

try {
    isVpnActive = await vpnChecker.isVPNEnabled();
} on VPNUnhandledException catch (e) {
    print(e);
}

vpnChecker.vpnActiveStream.listen((isActive) {
  isVpnActive = isActive;
  print('is vpn active: $isActive');
},
  cancelOnError: false,
);

// You can also use widget builder
  ...
  VPNStatusBuilder(
    builder: (BuildContext context, VPNStatus value) {
      return Center(
        child: Text('VPN status: ${value.name}'),
      );
    },
  ),
  ...