public void Query(string serverHost, int serverPort, string name, string qtype)
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
var ipv4Address = GetIpv4Address(serverHost);
IPEndPoint endPoint = new IPEndPoint(ipv4Address, serverPort);
socket.Connect(endPoint);
var input = DnsUtils.CreateQuestionAsBytes(name, qtype);
Console.WriteLine($"Sending: { input.Length }bytes data");
socket.Send(input);
Console.WriteLine("Receiving...");
var output = new byte[512];
var c = socket.Receive(output);
Console.WriteLine($"Received {c}bytes");
var dnsPacket = new byte[c];
Array.Copy(output, dnsPacket, c);
DnsUtils.ReadAndPrintDnsMessage(dnsPacket);
socket.Close();
}
