1/*
2 * Copyright (c) 2010, 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/* @test
25 * @bug 6431343
26 * @summary Test that DatagramChannel.getLocalAddress returns the right local
27 *    address after connect/disconnect.
28 */
29import java.net.*;
30import java.nio.channels.DatagramChannel;
31
32public class ChangingAddress {
33
34    // Checks that the given DatagramSocket and DatagramChannel are bound to the
35    // same local address.
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
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