1 /*
2  * Copyright (c) 2004, 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 package test.java.net.InetAddress;
24 
25 /**
26  * @test
27  * @bug 5087907
28  * @summary  InetAddress.getAllByName does not obey setting of java.net.preferIPv6Addresses
29  * @run main/othervm -Djava.net.preferIPv6Addresses=false B5087907
30  * @run main/othervm -Djava.net.preferIPv6Addresses=true B5087907
31  * @run main/othervm B5087907
32  */
33 
34 import java.net.*;
35 import org.testng.annotations.Test;
36 import static org.testng.Assert.assertTrue;
37 
38 public class B5087907 {
39 
40     @Test
testB5087907()41     public void testB5087907() {
42         InetAddress lh = null;
43         InetAddress addrs[] = null;
44         try {
45             lh = InetAddress.getByName("localhost");
46             addrs = InetAddress.getAllByName("localhost");
47         } catch (UnknownHostException e) {
48             System.out.println ("Cant lookup localhost. cant run test");
49             return;
50         }
51 
52         boolean hasIPv4Address = false;
53         boolean hasIPv6Address = false;
54         for (InetAddress addr: addrs) {
55             if (addr instanceof Inet4Address) {
56                 hasIPv4Address = true;
57             }
58             if (addr instanceof Inet6Address) {
59                 hasIPv6Address = true;
60             }
61             if (hasIPv4Address && hasIPv6Address) {
62                 break;
63             }
64         }
65 
66         String prop = System.getProperty("java.net.preferIPv6Addresses");
67         boolean preferIPv6Addresses = (prop == null) ? false : prop.equals("true");
68 
69         boolean failed = false;
70         if (preferIPv6Addresses && hasIPv6Address) {
71             assertTrue(lh instanceof Inet6Address);
72         }
73         if (!preferIPv6Addresses && hasIPv4Address) {
74             assertTrue(lh instanceof Inet4Address);
75         }
76     }
77 
78 }