/*

 * Copyright (c) 2000, 2005, 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 4392195

 * @summary Infinite loop in sun.net.www.http.KeepAliveStream [due to skip()]

 * @run main/othervm/timeout=30 KeepAliveStreamClose

 */

import java.net.*;

import java.io.*;

public class KeepAliveStreamClose {

    static class XServer extends Thread {

        ServerSocket srv;

        Socket s;

        InputStream is;

        OutputStream os;

        XServer (ServerSocket s) {

            srv = s;

        }

        Socket getSocket () {

            return (s);

        }

        // simulated HTTP server response

        static String response = "HTTP/1.1 200 OK\nDate: Thu, 07 Dec 2000 11:32:28 GMT\n"+

            "Server: Apache/1.3.6 (Unix)\nKeep-Alive: timeout=15, max=100\nConnection: Keep-Alive\n"+

            "Content-length: 255\nContent-Type: text/html\n\n";

        public void run() {

            try {

                s = srv.accept ();

                is = s.getInputStream ();

                os = s.getOutputStream ();

                // read the first ten bytes

                for (int i=0; i<10; i++) {

                    is.read();

                }

                os.write (response.getBytes());

                for (int i=0; i<255; i++) {

                    os.write ("X".getBytes());

                    Thread.sleep (1000);

                }

            } catch (Exception e) {

            }

        }

    }

    /*

     * If the server closes the connection at the same time as the client

     * does, then the client will hang (jdk1.3) because KeepAliveStream.skip

     * is returning zero and the calling close() stays in a loop

     */

    public static void main (String[] args) {

        try {

            ServerSocket serversocket = new ServerSocket (0);

            int port = serversocket.getLocalPort ();

            XServer server = new XServer (serversocket);

            server.start ();

            URL url = new URL ("http://localhost:"+port);

            URLConnection urlc = url.openConnection ();

            InputStream is = urlc.getInputStream ();

            int i=0, c;

            while ((c=is.read())!= -1) {

                i++;

                if (i == 5) {

                    server.getSocket().close ();

                    is.close();

                    break;

                }

            }

        } catch (Exception e) {

            e.printStackTrace();

            throw new RuntimeException ("Unexpected exception");

        }

    }

}