/*

 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 4476378

 * @summary Check that SO_REUSEADDR allows a server to restart

 *          after a crash.

 * @run main Restart

 * @run main/othervm -Dsun.net.useExclusiveBind Restart

 */

import java.net.*;

public class Restart {

    /*

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

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

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

     * SO_REUSEADDR is enabled.

     */

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

        ServerSocket ss = new ServerSocket(0);

        Socket s1 = null, s2 = null;

        try {

            int port = ss.getLocalPort();

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

            s2 = ss.accept();

            // close server socket and the accepted connection

            ss.close();

            s2.close();

            ss = new ServerSocket();

            ss.bind( new InetSocketAddress(port) );

            ss.close();

            // close the client socket

            s1.close();

        } catch (BindException be) {

            if (System.getProperty("sun.net.useExclusiveBind") != null) {

                // exclusive bind, expected exception

            } else {

                throw be;

            }

        } finally {

            if (ss != null) ss.close();

            if (s1 != null) s1.close();

            if (s2 != null) s2.close();

        }

    }

}