1 /*
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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  *
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22  */
23 
24 /* @test
25  * @bug 6431343
26  * @summary Test that DatagramChannel.getLocalAddress returns the right local
27  *    address after connect/disconnect.
28  */
29 import java.net.*;
30 import java.nio.channels.DatagramChannel;
31 
32 public class ChangingAddress {
33 
34     // Checks that the given DatagramSocket and DatagramChannel are bound to the
35     // same local address.
check(DatagramSocket ds, DatagramChannel dc)36     static void check(DatagramSocket ds, DatagramChannel dc) {
37         InetAddress expected = ds.getLocalAddress();
38         InetAddress actual = dc.socket().getLocalAddress();
39         // okay if one bound to 0.0.0.0 and the other to ::0
40         if ((expected.isAnyLocalAddress() != actual.isAnyLocalAddress()) &&
41             !expected.equals(actual))
42         {
43             throw new RuntimeException("Expected: " + expected + ", actual: " + actual);
44         }
45     }
46 
main(String[] args)47     public static void main(String[] args) throws Exception {
48         InetAddress lh = InetAddress.getLocalHost();
49         SocketAddress remote = new InetSocketAddress(lh, 1234);
50 
51         DatagramSocket ds = null;
52         DatagramChannel dc = null;
53         try {
54 
55             ds = new DatagramSocket();
56             dc = DatagramChannel.open().bind(new InetSocketAddress(0));
57             check(ds, dc);
58 
59             ds.connect(remote);
60             dc.connect(remote);
61             check(ds, dc);
62 
63             ds.disconnect();
64             dc.disconnect();
65             check(ds, dc);
66 
67             // repeat tests using socket adapter
68             ds.connect(remote);
69             dc.socket().connect(remote);
70             check(ds, dc);
71 
72             ds.disconnect();
73             dc.socket().disconnect();
74             check(ds, dc);
75 
76        } finally {
77             if (ds != null) ds.close();
78             if (dc != null) dc.close();
79        }
80     }
81 }
82