diff options
Diffstat (limited to 'luni/src/main/java/java/net/MulticastSocket.java')
| -rw-r--r-- | luni/src/main/java/java/net/MulticastSocket.java | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/luni/src/main/java/java/net/MulticastSocket.java b/luni/src/main/java/java/net/MulticastSocket.java index 6f4a582..24e66c5 100644 --- a/luni/src/main/java/java/net/MulticastSocket.java +++ b/luni/src/main/java/java/net/MulticastSocket.java @@ -229,6 +229,9 @@ public class MulticastSocket extends DatagramSocket { private void checkJoinOrLeave(InetAddress groupAddr) throws IOException { checkOpen(); + if (groupAddr == null) { + throw new IllegalArgumentException("groupAddress == null"); + } if (!groupAddr.isMulticastAddress()) { throw new IOException("Not a multicast group: " + groupAddr); } @@ -351,7 +354,8 @@ public class MulticastSocket extends DatagramSocket { /** * Disables multicast loopback if {@code disable == true}. * See {@link SocketOptions#IP_MULTICAST_LOOP}, and note that the sense of this is the - * opposite of the underlying Unix {@code IP_MULTICAST_LOOP}. + * opposite of the underlying Unix {@code IP_MULTICAST_LOOP}: true means disabled, false + * means enabled. * * @throws SocketException if an error occurs. */ |