How to get device IP in Dart/Flutter

Question

I am currently writing an app where the user needs to know the IP address of their phone/tablet. Where would I find this information?

I only want to know what the local

Answer 1

Here is another way.

 Future _retrieveIPAddress() async {
    InternetAddress result;

    int code = Random().nextInt(255);
    var dgSocket = await RawDatagramSocket.bind(InternetAddress.anyIPv4, 0);
    dgSocket.readEventsEnabled = true;
    dgSocket.broadcastEnabled = true;
    Future ret =
        dgSocket.timeout(Duration(milliseconds: 100), onTimeout: (sink) {
      sink.close();
    }).expand((event) {
      if (event == RawSocketEvent.read) {
        Datagram dg = dgSocket.receive();
        if (dg != null && dg.data.length == 1 && dg.data[0] == code) {
          dgSocket.close();
          return [dg.address];
        }
      }
      return [];
    }).firstWhere((InternetAddress a) => a != null);

    dgSocket.send([code], InternetAddress("255.255.255.255"), dgSocket.port);
    return ret;
  }