RFR[8233191]: MulticastSocket joinGroup/leaveGroup do not specify their behavior when the outgoing interface has not been set

[Patrick Concannon]

Hi,


Could some please review my fix for issue JDK-8233191 'MulticastSocket 
joinGroup/leaveGroup do not specify their behavior when the outgoing 
interface has not been set'?

This javadoc fix clarifies the behaviour of 2-arg joinGroup/leaveGroup 
methods when null is passed for the NetworkInteface argument. The fix 
also clarifies what is returned by getInterface() and 
getNetworkInterface() methods when no previous NetworkInterface has been 
set.


bug: https://bugs.openjdk.java.net/browse/JDK-8233191
webrev: http://cr.openjdk.java.net/~pconcannon/8233191/webrevs/webrev.00/


Kind regards,

Patrick