CFLib.org – IsMulticastAddress

IsMulticastAddress(address)

Last updated December 19, 2001

author

Version: 1 | Requires: ColdFusion 5 | Library: NetLib

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Description:
Checks to see if a specifid address (IP address or host name) is a multicast address (Class D). If the host name is invalid an exception will be throw, so <CFTRY>/<CFCATCH> should be used.

Return Values:
Returns a boolean.

Example:

view plain print about

<CFOUTPUT>
#IsMulticastAddress("#CGI.REMOTE_ADDR#")#
</CFOUTPUT>

<CFOUTPUT>
#IsMulticastAddress("#CGI.REMOTE_ADDR#")#
</CFOUTPUT>

Parameters:

Name	Description	Required
address	The address to check.	Yes

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				ColdFISH is developed by Jason Delmore.  Source code and license information available at coldfish.riaforge.org.  Version 3.1.1
				
			<cfscript>
/**
 * Checks to see if a specifid address (IP address or host name) is a multicast address (Class D).
 * 
 * @param address 	 The address to check. 
 * @return Returns a boolean. 
 * @author Ben Forta (&#98;&#101;&#110;&#64;&#102;&#111;&#114;&#116;&#97;&#46;&#99;&#111;&#109;) 
 * @version 1, December 19, 2001 
 */
function IsMulticastAddress(address) {
   // Variables
   var iaclass="";
   var addr="";
   
   // Init class
   iaclass=CreateObject("java", "java.net.InetAddress");

   // Get address
   addr=iaclass.getByName(address);

   // Is Multicast (Class D)?
   return addr.isMulticastAddress();
}
</cfscript>
		<cfscript>
/**
 * Checks to see if a specifid address (IP address or host name) is a multicast address (Class D).
 * 
 * @param address      The address to check. 
 * @return Returns a boolean. 
 * @author Ben Forta (ben@forta.com) 
 * @version 1, December 19, 2001 
 */
function IsMulticastAddress(address) {
   // Variables
   var iaclass="";
   var addr="";
   
   // Init class
   iaclass=CreateObject("java", "java.net.InetAddress");

   // Get address
   addr=iaclass.getByName(address);

   // Is Multicast (Class D)?
   return addr.isMulticastAddress();
}
</cfscript>