1 /*
   2  * Copyright (c) 1998, 1999, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4091811 4148753 4102731
  27  * @summary Test java.net.MulticastSocket joinGroup and leaveGroup
  28  * @library /lib/testlibrary
  29  * @build jdk.testlibrary.NetworkConfiguration
  30  * @run main JoinLeave
  31  */
  32 
  33 import java.io.IOException;
  34 import java.io.UncheckedIOException;
  35 import java.net.InetAddress;
  36 import java.net.MulticastSocket;
  37 import java.net.NetworkInterface;
  38 import jdk.testlibrary.NetworkConfiguration;
  39 
  40 public class JoinLeave {
  41 
  42     public static void main(String args[]) throws IOException  {
  43         InetAddress ip4Group = InetAddress.getByName("224.80.80.80");
  44         InetAddress ip6Group = InetAddress.getByName("ff02::a");
  45 
  46         NetworkConfiguration nc = NetworkConfiguration.probe();
  47         nc.ip4MulticastInterfaces().forEach(nic -> joinLeave(ip4Group, nic));
  48         nc.ip6MulticastInterfaces().forEach(nic -> joinLeave(ip6Group, nic));
  49     }
  50 
  51     static void joinLeave(InetAddress group, NetworkInterface nif)
  52     {
  53         System.out.println("Joining:" + group + " on " + nif);
  54         try (MulticastSocket soc = new MulticastSocket()) {
  55             soc.setNetworkInterface(nif);
  56             soc.joinGroup(group);
  57             soc.leaveGroup(group);
  58         } catch (IOException e) {
  59             throw new UncheckedIOException(e);
  60         }
  61     }
  62 }