/*

 * Copyright (c) 2006, 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 6421581

 * @summary NPE while closing HttpExchange.getResonseBody()

 */

import com.sun.net.httpserver.*;

import java.net.*;

import java.io.*;

import java.util.concurrent.*;

public class B6421581 {

    static boolean error = false;

    static int iter = 0;

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

                once();

    }

    public static void once() throws Exception {

        InetSocketAddress inetAddress = new InetSocketAddress(

            "localhost", 0);

        HttpServer server = HttpServer.create(inetAddress, 5);

        int port = server.getAddress().getPort();

        ExecutorService e = (Executors.newFixedThreadPool(5));

        server.setExecutor(e);

        HttpContext context = server.createContext("/hello");

        server.start();

        context.setHandler(new HttpHandler() {

            public void handle(HttpExchange msg) {

                iter ++;

                System.out.println("Got request");

                switch (iter) {

                case 1:

                    /* close output stream without opening inpustream */

                    /* chunked encoding */

                    try {

                        msg.sendResponseHeaders(200, 0);

                        OutputStream out = msg.getResponseBody();

                        out.write("hello".getBytes());

                        out.close();

                    } catch(Exception e) {

                        error = true;

                    } finally {

                        msg.close();

                    }

                    break;

                case 2:

                    /* close output stream without opening inpustream */

                    /* fixed encoding */

                    try {

                        msg.sendResponseHeaders(200, 5);

                        OutputStream out = msg.getResponseBody();

                        out.write("hello".getBytes());

                        out.close();

                    } catch(Exception e) {

                        error = true;

                    } finally {

                        msg.close();

                    }

                    break;

                case 3:

                    /* close exchange without opening any stream */

                    try {

                        msg.sendResponseHeaders(200, -1);

                        msg.close();

                    } catch(Exception e) {

                        error = true;

                    }

                    break;

                }

            }

        });

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

        doURL(url);

        doURL(url);

        doURL(url);

        e.shutdown();

        e.awaitTermination(4, TimeUnit.SECONDS);

        server.stop(0);

        if (error) {

            throw new RuntimeException ("test failed");

        }

    }

    static void doURL (URL url) throws Exception {

        InputStream is = url.openStream();

        while (is.read() != -1) ;

        is.close();

    }

}