static void Main(string[] args)
{
if (args.Length != 4)
{
PrintUsage();
Environment.Exit(2);
}
string serverHost = "";
int serverPort = 53;
string queryName = "";
string queryType = "";
try
{
serverHost = args[0];
serverPort = Int32.Parse(args[1]);
queryName = args[2];
queryType = args[3];
} catch (FormatException)
{
PrintUsage();
Environment.Exit(2);
}
Console.WriteLine($"Query: '{queryName}' on server ('{serverHost}', {serverPort})");
DnsClient client = new DnsClient();
client.Query(serverHost, serverPort, queryName, queryType);
Console.WriteLine("End.");
Console.ReadKey();
}