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  */

    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.

    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 }