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https://issues.apache.org/jira/browse/NET-189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenny MacLeod updated NET-189:
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Attachment: IpRangeFilterTest.java
IpRangeFilter.java
Funny you should ask that! See attached code and unit test.
After thinking about this issue a bit more, it was clear that converting a
network/netmask into a set of ip addresses would be potentially very
inefficient, and that all we really needed was a way of finding out if a given
IP address was part of a given IP range, using bitwise mask operations. The
result is very quick indeed.
It doesn't support the specification of the netmask in terms of
"10.1.0.0/255.255.0.0" format, since I find that that's unnecessary
flexibility, and that the standard "10.1.0.0/16" format is sufficient.
> Add netmask translation feature
> -------------------------------
>
> Key: NET-189
> URL: https://issues.apache.org/jira/browse/NET-189
> Project: Commons Net
> Issue Type: New Feature
> Reporter: Kenny MacLeod
> Priority: Minor
> Attachments: IpRangeFilter.java, IpRangeFilterTest.java
>
>
> Java is sorely lacking in a good quality open source APi for translating
> standard IP netmasks, e.g.
> 10.1.0.0/16
> 83.217.112.18/255.255.255.240
> 10.1.0.*
> etc etc
> These sorts of masks are commonly used in the likes of Apache web server, and
> I would really like to use them in java. A utlity to translate them into
> sequences of InetAddress objects would be perfect.
> Commons-Net would seem like a good project to put them in.
> Thoughts?
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