RFR(XS): 8146482: [TESTBUG] java/net/SocketOption/OptionTest should only use multicast capable interfaces for multicast tests

[Chris Hegarty]

Hi Volker,

On 5 Jan 2016, at 17:49, Volker Simonis <volker.simonis at gmail.com> wrote:

> Hi,
> 
> can somebody please review this small test fix:
> 
> http://cr.openjdk.java.net/~simonis/webrevs/2016/8146482/
> https://bugs.openjdk.java.net/browse/JDK-8146482

This change looks good to me.

-Chris.

> The java/net/SocketOption/OptionTest test chooses the first network
> interface returned by NetworkInterface.getNetworkInterfaces() for
> doing some tests on multicast sockets.
> 
> But it may be that the chosen interface does not even support
> multicasting. So better iterate over all interfaces and only choose
> one if NetworkInterface.supportsMulticast() returns true.
> 
> Thanks,
> Volker