/*

 * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

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

 * have any questions.

 */

/**

 * @test

 * @bug 4796166

 * @summary Linger interval delays usage of released file descriptor

 */

import java.net.*;

import java.io.*;

public class LingerTest {

    static class Sender implements Runnable {

        Socket s;

        public Sender(Socket s) {

            this.s = s;

        }

        public void run() {

            System.out.println ("Sender starts");

            try {

                s.getOutputStream().write(new byte[128*1024]);

            }

            catch (IOException ioe) {

            }

            System.out.println ("Sender ends");

        }

    }

    static class Closer implements Runnable {

        Socket s;

        public Closer(Socket s) {

            this.s = s;

        }

        public void run() {

            System.out.println ("Closer starts");

            try {

                s.close();

            }

            catch (IOException ioe) {

            }

            System.out.println ("Closer ends");

        }

    }

    static class Another implements Runnable {

        int port;

        long delay;

        boolean connected = false;

        public Another(int port, long delay) {

            this.port = port;

            this.delay = delay;

        }

        public void run() {

            System.out.println ("Another starts");

            try {

                Thread.currentThread().sleep(delay);

                Socket s = new Socket("localhost", port);

                synchronized (this) {

                    connected = true;

                }

                s.close();

            }

            catch (Exception ioe) {

                ioe.printStackTrace();

            }

            System.out.println ("Another ends");

        }

        public synchronized boolean connected() {

            return connected;

        }

    }

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

        ServerSocket ss = new ServerSocket(0);

        Socket s1 = new Socket("localhost", ss.getLocalPort());

        Socket s2 = ss.accept();

        // setup conditions for untransmitted data and lengthy

            // linger interval

            s1.setSendBufferSize(128*1024);

        s1.setSoLinger(true, 30);

        s2.setReceiveBufferSize(1*1024);

        // start sender

            Thread thr = new Thread(new Sender(s1));

        thr.start();

        // another thread that will connect after 5 seconds.

            Another another = new Another(ss.getLocalPort(), 5000);

        thr = new Thread(another);

        thr.start();

        // give sender time to queue the data

            Thread.currentThread().sleep(1000);

        // close the socket asynchronously

            (new Thread(new Closer(s1))).start();

        // give another time to run

            Thread.currentThread().sleep(10000);

        // check that another is done

            if (!another.connected()) {

            throw new RuntimeException("Another thread is blocked");

        }

        System.out.println ("Main ends");

    }

}