1 /*

     2  * Copyright 2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 4476378

    27  * @summary Check that SO_REUSEADDR allows a server to restart

    28  *          after a crash.

    29  */

    30 import java.net.*;

    31 

    32 public class Restart {

    33 

    34     /*

    35      * Test that a server can bind to the same port after

    36      * a crash -- ie: while previous connection still in

    37      * TIME_WAIT state we should be able to re-bind if

    38      * SO_REUSEADDR is enabled.

    39      */

    40 

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

    42 

    43         InetSocketAddress isa = new InetSocketAddress(0);

    44         ServerSocket ss = new ServerSocket();

    45         ss.bind(isa);

    46 

    47         int port = ss.getLocalPort();

    48 

    49         Socket s1 = new Socket(InetAddress.getLocalHost(), port);

    50         Socket s2 = ss.accept();

    51 

    52         // close server socket and the accepted connection

    53         ss.close();

    54         s2.close();

    55 

    56         boolean failed = false;

    57 

    58         ss = new ServerSocket();

    59         ss.bind( new InetSocketAddress(port) );

    60         ss.close();

    61 

    62         // close the client socket

    63         s1.close();

    64     }

    65 }