1 /*

     2  * Copyright (c) 2011, 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 7084030

    26  * @summary Tests that DatagramSocket.getLocalAddress returns the right local

    27  *          address after connect/disconnect.

    28  */

    29 import java.net.*;

    30 

    31 public class ChangingAddress {

    32 

    33     static void check(DatagramSocket ds, InetAddress expected) {

    34         InetAddress actual = ds.getLocalAddress();

    35         if (!expected.equals(actual)) {

    36             throw new RuntimeException("Expected:"+expected+" Actual"+

    37                                        actual);

    38         }

    39     }

    40 

    41     public static void main(String[] args) throws Exception {

    42         InetAddress lh = InetAddress.getLocalHost();

    43         SocketAddress remote = new InetSocketAddress(lh, 1234);

    44         InetAddress wildcard = InetAddress.getByAddress

    45                                ("localhost", new byte[]{0,0,0,0});

    46         try (DatagramSocket ds = new DatagramSocket()) {

    47             check(ds, wildcard);

    48 

    49             ds.connect(remote);

    50             check(ds, lh);

    51 

    52             ds.disconnect();

    53             check(ds, wildcard);

    54        }

    55     }

    56 }