private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            var masterserver = (bool)e.Argument;
            if (masterserver)
            {
                var host = "server.alteriw.net";
                var EP = new IPEndPoint(IPAddress.Any, 0);
                var getservers = Encoding.UTF8.GetBytes("    getservers IW4 142 full empty");
                for (int i = 0; i < 4; i++)
                    getservers[i] = 0xFF;
                Log.Debug("getservers : " + Encoding.UTF8.GetString(getservers));

                if (File.Exists("masterserver.txt"))
                    host = File.ReadAllLines("masterserver.txt")[0];

                UdpClient client = new UdpClient(host, 20810);
                client.Client.ReceiveTimeout = 2000;
                client.Send(getservers, getservers.Length);
                while (true)
                {
                    try
                    {
                        var receivedata = client.Receive(ref EP);
                        Log.Debug("Received data from master server\n" + Encoding.UTF8.GetString(receivedata));
                        parseResponse(receivedata);
                        if (Encoding.UTF8.GetString(receivedata).Contains("EOT"))
                            break;
                    }
                    catch { Log.Error(e.ToString()); break; }
                }
            }
            else
                readFav();
        }