public static RecordCollection Lookup(string DnsName, QueryTypes LookupType)
{
IntPtr ptr = IntPtr.Zero;
IntPtr temp = IntPtr.Zero;
RecordCollection RC = null;
DnsRecord DNSR;
int intAddress = BitConverter.ToInt32(IPAddress.Parse("8.8.8.8").GetAddressBytes(), 0);
int result = DnsQuery(ref DnsName,
LookupType,
QueryOptions.DNS_QUERY_STANDARD,
0, ref ptr, 0);
if (result == 0)
{
for (temp = ptr; !temp.Equals(IntPtr.Zero); temp = DNSR.pNext)
{
DNSR = (DnsRecord)Marshal.PtrToStructure(temp, typeof(DnsRecord));
if (RC == null)
{
RC = new RecordCollection(temp, DNSR);
}
RC.Add((QueryTypes)DNSR.wType, getRecord((QueryTypes)DNSR.wType, temp));
}
}
else
{
throw new Win32Exception(result);
}
return(RC);
}
/// <summary>
/// Looks up a type of DNS record
/// </summary>
/// <param name="DnsName">Query</param>
/// <param name="LookupType">lookup type</param>
/// <returns>Record collection</returns>
public static RecordCollection Lookup(string DnsName, QueryTypes LookupType)
{
IntPtr ptr = IntPtr.Zero;
IntPtr temp = IntPtr.Zero;
RecordCollection RC = null;
DnsRecord DNSR;
//INFO: I have commented what is the custom DNS option.
//INFO: It was unreliable for me.
//int intAddress = BitConverter.ToInt32(IPAddress.Parse("8.8.8.8").GetAddressBytes(), 0);
int result = DnsQuery(ref DnsName,
LookupType,
QueryOptions.DNS_QUERY_STANDARD,
0 /*intAddress*/, ref ptr, 0);
if (result == 0)
{
for (temp = ptr; !temp.Equals(IntPtr.Zero); temp = DNSR.pNext)
{
DNSR = (DnsRecord)Marshal.PtrToStructure(temp, typeof(DnsRecord));
if (RC == null)
{
RC = new RecordCollection(temp, DNSR);
}
if (Marshal.PtrToStringAuto(DNSR.pName).ToLower() == DnsName.ToLower())
{
#if XX_DEBUG_XX
Console.WriteLine("{0} {1} {2} {3}",
Marshal.PtrToStringAuto(DNSR.pName),
DNSR.wType,
DNSR.wDataLength,
new IPAddress(BitConverter.GetBytes((uint)DNSR.Record.ToInt64()))
);
#endif
RC.Add((QueryTypes)DNSR.wType, getRecord((QueryTypes)DNSR.wType, temp));
}
}
}
else
{
//throw new Win32Exception(result);
return(null);
}
return(RC);
}
/// <summary>
/// Looks up a type of DNS record
/// </summary>
/// <param name="DnsName">Query</param>
/// <param name="LookupType">lookup type</param>
/// <returns>Record collection</returns>
public static RecordCollection Lookup(string DnsName,QueryTypes LookupType)
{
IntPtr ptr=IntPtr.Zero;
IntPtr temp=IntPtr.Zero;
RecordCollection RC=null;
DnsRecord DNSR;
//INFO: I have commented what is the custom DNS option.
//INFO: It was unreliable for me.
//int intAddress = BitConverter.ToInt32(IPAddress.Parse("8.8.8.8").GetAddressBytes(), 0);
int result=DnsQuery(ref DnsName,
LookupType,
QueryOptions.DNS_QUERY_STANDARD,
0/*intAddress*/,ref ptr, 0);
if (result == 0)
{
for (temp = ptr; !temp.Equals(IntPtr.Zero); temp = DNSR.pNext)
{
DNSR = (DnsRecord)Marshal.PtrToStructure(temp, typeof(DnsRecord));
if(RC==null)
{
RC=new RecordCollection(temp,DNSR);
}
if (Marshal.PtrToStringAuto(DNSR.pName).ToLower() == DnsName.ToLower())
{
#if XX_DEBUG_XX
Console.WriteLine("{0} {1} {2} {3}",
Marshal.PtrToStringAuto(DNSR.pName),
DNSR.wType,
DNSR.wDataLength,
new IPAddress(BitConverter.GetBytes((uint)DNSR.Record.ToInt64()))
);
#endif
RC.Add((QueryTypes)DNSR.wType, getRecord((QueryTypes)DNSR.wType, temp));
}
}
}
else
{
//throw new Win32Exception(result);
return null;
}
return RC;
}
