[commit-cp] [bug #12826] NetworkInterface.getNetworkInterfaces() should return condensed results

[Ito Kazumitsu]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=12826>

                 Summary: NetworkInterface.getNetworkInterfaces() should
return condensed results
                 Project: classpath
            Submitted by: itokaz
            Submitted on: Tue 04/26/05 at 22:35
                Category: classpath
                Severity: 3 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
        Platform Version: None

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Details:

Let's describe a network interface whose name is n and which has
addresses a1, a2, ..., an as (n (a1 a2 ... an)), or (n a1) if
n has only on address a1 or addresses other than a1 is ignored.

NetworkInterface.getNetworkInterfaces() should return something
like this:

     ((n1 (a11 a12 a13)) (n2 (a21 a22)))    ---[a]

But it may be the case that VMNetworkInterface.getInterfaces()
returns something like this:

     ((n1 a11) (n1 a12) (n1 a13) (n2 a21) (n2 a22))    ---[b]

So NetworkInterface.getNetworkInterfaces() should condense
the data structure [b] into [a]. But now it simply returns [b].

We may ask VMNetworkInterface.getInterfaces() to return already
condensed data like [a], but I cannot expect that all implementations
of VMNetworkInterface can easily do this.

This will be a problem when a network interface has both IPv4 and
IPv6 addresses.

Kaffe's NetworkInterface is modified to do the condensing.

Please refer to the articles of Kaffe's mailing list around
http://www.kaffe.org/pipermail/kaffe/2005-April/102338.html








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