/// <summary>
/// Checks if a domain exists in the DNS server's cache
/// </summary>
/// <params>
/// <param name="dnsIp">DNS server's IP address</param>
/// <param name="query">Query to be executed</param>
/// </params>
/// <returns>True if it exists</returns>
private bool ExistsInDnsServerCache(string dnsIp, string query)
{
var r = new Heijden.DNS.Resolver(dnsIp)
{
Recursion = false
};
if (r.Query(query, Heijden.DNS.QType.A, Heijden.DNS.QClass.IN).Answers.Count > 0)
{
Found?.Invoke(query, null);
return(true);
}
return(false);
}
public Address()
{
_resolver = new Resolver("8.8.8.8") {UseCache = true, TimeOut = 5, TransportType = TransportType.Tcp};
Log.Debug("Default DNS Servers: {DnsServers}", _resolver.DnsServer);
_resolver.OnVerbose += _resolver_OnVerbose;
}
private void _resolver_OnVerbose(object sender, Resolver.VerboseEventArgs e)
{
Log.Debug("DNS Resolver Verbose Message: {Message}", e.Message);
}