| public GetARecords ( ) : LumiSoft.Net.Dns.Client.A_Record[] | ||
| return | LumiSoft.Net.Dns.Client.A_Record[] | |
/// <summary>
/// Gets specified host IP addresses(A and AAAA).
/// </summary>
/// <param name="host">Host name.</param>
/// <returns>Returns specified host IP addresses.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>host</b> is null reference.</exception>
public IPAddress[] GetHostAddresses(string host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
List <IPAddress> retVal = new List <IPAddress>();
// This is probably NetBios name
if (host.IndexOf(".") == -1)
{
return(System.Net.Dns.GetHostEntry(host).AddressList);
}
else
{
DnsServerResponse response = Query(host, QTYPE.A);
if (response.ResponseCode != RCODE.NO_ERROR)
{
throw new DNS_ClientException(response.ResponseCode);
}
foreach (DNS_rr_A record in response.GetARecords())
{
retVal.Add(record.IP);
}
response = Query(host, QTYPE.AAAA);
if (response.ResponseCode != RCODE.NO_ERROR)
{
throw new DNS_ClientException(response.ResponseCode);
}
foreach (DNS_rr_A record in response.GetARecords())
{
retVal.Add(record.IP);
}
}
return(retVal.ToArray());
}
/// <summary>
/// Resolves host name to IP addresses.
/// </summary>
/// <param name="host">Host name or IP address.</param>
/// <returns>Return specified host IP addresses.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>host</b> is null.</exception>
public static IPAddress[] Resolve(string host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
// If hostName_IP is IP
try{
return(new IPAddress[] { IPAddress.Parse(host) });
}
catch {
}
// This is probably NetBios name
if (host.IndexOf(".") == -1)
{
return(System.Net.Dns.GetHostEntry(host).AddressList);
}
else
{
// hostName_IP must be host name, try to resolve it's IP
Dns_Client dns = new Dns_Client();
DnsServerResponse resp = dns.Query(host, QTYPE.A);
if (resp.ResponseCode == RCODE.NO_ERROR)
{
DNS_rr_A[] records = resp.GetARecords();
IPAddress[] retVal = new IPAddress[records.Length];
for (int i = 0; i < records.Length; i++)
{
retVal[i] = records[i].IP;
}
return(retVal);
}
else
{
throw new Exception(resp.ResponseCode.ToString());
}
}
}
