getAllHostAddresses(host)
Last updated September 22, 2005
Version: 1 | Requires: ColdFusion 5 | Library: NetLib
Description:
Performs an "A" record DNS lookup. Based on GetHostAddress() by Ben Forta. This version returns all A records for the host in an array. Good if you need need to get all host addresses for a host that uses round-robin DNS. (The comment in the original function refers to this as a "reverse lookup" but that is not actually correct DNS terminology-- this is a forward lookup.)
Return Values:
Returns an array.
Example:
<cfloop list="#arraytolist(addr)#" index="ip">
<cfoutput>#ip#<br /></cfoutput>
</cfloop>
Parameters:
| Name | Description | Required |
|---|---|---|
| host | Host name. | Yes |
Full UDF Source:
<cfscript>
/**
* Looks up all IP addresses for a hostname and returns them in an array. Requires Java.
*
* @param host Host name. (Required)
* @return Returns an array.
* @author David Chaplin-Loebell (davidcl@tlavideo.com)
* @version 1, September 22, 2005
*/
function getAllHostAddresses(host) {
var iaclass=""; //holds the Java object
var addr=""; //holds the array returned by the java object
var hostaddr=arrayNew(1); //holds the returned array of IP addresses.
var i = "";
// Init class
iaclass=CreateObject("java", "java.net.InetAddress");
// Get address
addr=iaclass.getAllByName(host);
// Return the address
for (i=1; i LTE ArrayLen(addr); i=i+1) {
iaclass = Addr[i]; //can't access Addr[i].getHostAddress() directly in CF5
hostaddr[i] = iaclass.getHostAddress();
}
return hostaddr;
}
</cfscript>
Search CFLib.org
Latest Additions
structBlend
19 day(s) ago
IsZIPUK
19 day(s) ago
getTagContentAll
25 day(s) ago
ListReturnDuplicat...
1 month(s) ago
ListReturnDuplicat...
1 month(s) ago