git: openjdk/mobile: 8233296: MulticastSocket getOption/setOption inverts the value of IP_MULTICAST_LOOP

[duke]

Changeset: 8333ea85
Author:    Daniel Fuchs <dfuchs at openjdk.org>
Date:      2019-11-22 11:52:48 +0000
URL:       https://git.openjdk.java.net/mobile/commit/8333ea85

8233296: MulticastSocket getOption/setOption inverts the value of IP_MULTICAST_LOOP

MulticastSocket.getOption(StandardSocketOption.IP_MULTICAST_LOOP) now returns true if loopback mode is enabled, and MulticastSocket.setOption(StandardSocketOption.IP_MULTICAST_LOOP, true) enables loopback mode. No other behavioral changes.

Reviewed-by: alanb, chegar

! src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java
+ test/jdk/java/net/MulticastSocket/SetLoopbackOption.java
! test/jdk/java/net/SocketOption/OptionsTest.java