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Posted to issues@commons.apache.org by "Sebb (JIRA)" <ji...@apache.org> on 2018/01/22 15:20:00 UTC

[jira] [Resolved] (NET-651) Ip Range Check with SubnetUtils provides incorrect answer

     [ https://issues.apache.org/jira/browse/NET-651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebb resolved NET-651.
----------------------
    Resolution: Not A Problem

The Javadoc for isInRange says:

"Returns true if the parameter address is in the range of usable endpoint addresses for this subnet. This excludes the network and broadcast addresses."


> Ip Range Check with SubnetUtils provides incorrect answer
> ---------------------------------------------------------
>
>                 Key: NET-651
>                 URL: https://issues.apache.org/jira/browse/NET-651
>             Project: Commons Net
>          Issue Type: Bug
>            Reporter: sathyam
>            Priority: Major
>
> {code:java}
> private static void checkIp() {
>  System.out.println(verifyCommonsNet("192.168.0.1", "192.168.0.1/32"));
>  System.out.println(verifySpringSecurity("192.168.0.1", "192.168.0.1/32"));
> }
> private static boolean verifyCommonsNet(String ip, String subnet) {
>  SubnetUtils.SubnetInfo subnetInfo = (new SubnetUtils(subnet)).getInfo();
>  return subnetInfo.isInRange(ip);
> }
> private static boolean verifySpringSecurity(String ip, String subnet) {
>  IpAddressMatcher ipAddressMatcher = new IpAddressMatcher(subnet);
>  return ipAddressMatcher.matches(ip);
> }{code}
>  
> Tried to check Ip range functionality with Subnet Utils. But I get an incorrect answer when using mask of 32. The same CIDR with Spring security provides the right answer. checking 192.168.0.1 against 192.168.0.1/32 should return true. 



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