myIP method
Retrieves the IP address of this client as seen by the remote server.
Implementation
Future<String?> myIP() async {
var response = await _sendCommand("myip .");
if (response == null || response.isEmpty) return null;
var match = RegExp(r'ip:\s+(\S+)').firstMatch(response);
var ip = match?.group(1);
return ip;
}