lookup method

@override Future<List<InternetAddress>> lookup(String hostname)

Implementation

@override
Future<List<InternetAddress>> lookup(String hostname) {
  return lookupHttps(hostname).then((record) {
    return record.answer
            ?.where((answer) => answer.type == 1)
            .map((answer) => InternetAddress(answer.data))
            .toList() ??
        [];
  });
}