AspDNS 2.x
About AspDNS
AspDNS provides IP lookup and reverse
host name lookup for known IP addresses.
Simple Lookup Example
** Note from BP Tech Support:
you can also download other examples at http://www.serverobjects.com/ .
**
The following code demonstrates how to
use AspDNS from VBScript. <%
Set DNSLook =
Server.CreateObject("AspDNS.Lookup") strRes = DNSLook.DNSLookup
("mailhost.onramp.net") Response.Write ("<b>The
IP Address of mailhost.onramp.net is " & strRes & "</b>") %>
< /FONT
>
AspDNS Properties
| Property |
Description |
| Error |
The error property is
a read-only property used to report lookup errors.
Example:
Response.Write "Error: " &
DNSLook.Error |
| Expires |
Returns the
expiration date of the component if the component is an evaluation
copy.
Example:
Response.Write "Component
Expires: " & DNSLook.Expires |
| RegisteredTo |
If the component has
been purchased the RegisteredTo property will return the licensee's
name.
Example:
Response.Write "Component
Licensee: " & DNSLook.RegisteredTo |
| TimeOut |
The maximum time the
DNS component will wait for an answer from the DNS server.
Example:
DNSLook.TimeOut =
45 |
| Version |
Gets the internal
component version number.
Example:
Response.Write "Component
Version: " & DNSLook.Version |
AspDNS Component Methods
| Method |
Parameters |
Return
Value |
Description |
| DNSLookup |
strHostName |
String |
DNSLookup does a
normal DNS lookup on strHostName. The return value, if successful, is the
IP address for strHostName.
strRes
=DNSLook.DNSLookup("www.serverobjects.com") |
| ReverseDNSLookup |
strIPAddr |
String |
ReverseDNSLookup does
a reverse DNS lookup on strIPAddr. The return value, if successful, is the
host name for strIPAddr.
strRes
=DNSLook.ReverseDNSLookup("199.1.195.11") |
Questions about AspDNS
| "AspDNS works great
but sometimes I get 'Server object error 'ASP 0177:80040154'. What's
causing this?" |
If AspDNS works fine,
then it suddenly stops working and ASP begins to report this error, then
you've probably got a memory leak under IIS/ASP. What has happened is that
AspDNS objects can no longer be created. This could be caused by a) You
haven't installed the ASP patches that fix known ASP memory leaks b) You
have a filter or extension installed that's leaking memory c) You have
another component that's leaking memory.
AspDNS 2.x has been run under
BoundsChecker to verify that AspDNS does not leak memory. |
| "When running
regsvr32 I get an error: 'LoadLibrary ("AspDNS.dll") failed. GetLastError
returns 0x0000007e." |
- You are trying to install the
AspDNS Intel binary on NT for Alpha. Currently there is no Alpha version
of AspDNS. One is under construction but there's no ETA for the product
yet.
- The DLL isn't in the same
directory you are running regsvr32 from.
- The account you are logged in
under doesn't have enough security privileges to read the DLL.
- The copy you have is corrupt.
|
| What are the minimum
security requirements for AspDNS and IIS/ASP? |
Technically, the only
requirement AspDNS has is that it must have access to the temporary
directory as noted in one of the previous troubleshooting tips. But IIS
and ASP have certain requirements that must be met to run properly. Thanks
to Carl Howell for providing this information.
| ASP script
directory |
Creator Owner:
Full Control (All)(All)
System: ""
Admin: ""
IUSR:
(None)(RX) |
| \WinNT\ |
Creator Owner:
Full Control (All)(All)
System: ""
Admin: ""
IUSR:
(WX)(X) |
| \WinNT\System32\ |
System: Full
Control (All)(All)
Admin: ""
IUSR: (RX)(RX) |
| Inetsrv |
System: Full
Control (All)(All)
Admin: ""
Everyone:
(RX)(RX) | |
Technical Support
If you require technical support please
see our tech support page at http://www.serverobjects.com/support.htm
Copyright © 1996, 1997, 1998, 1999,
2000 by ServerObjects Inc. All Rights Reserved.
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