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Java example source code file (Redirect.java)

This example Java source code file (Redirect.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bufferedreader, exception, hostnameverifier, location, net, network, outputstream, printstream, redirect, runtimeexception, ssl, sslserversocket, sslserversocketfactory, sslsocket, string, thread, url

The Redirect.java Java example source code

/*
 * Copyright (c) 2001, 2011, 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 4423074
 * @summary Need to rebase all the duplicated classes from Merlin.
 *          This test will check out http POST
 * @run main/othervm Redirect
 *
 *     SunJSSE does not support dynamic system properties, no way to re-use
 *     system properties in samevm/agentvm mode.
 */

import java.io.*;
import java.net.*;
import javax.net.ssl.*;

public class Redirect {

    /*
     * =============================================================
     * Set the various variables needed for the tests, then
     * specify what tests to run on each side.
     */

    /*
     * Should we run the client or server in a separate thread?
     * Both sides can throw exceptions, but do you have a preference
     * as to which side should be the main thread.
     */
    static boolean separateServerThread = true;

    /*
     * Where do we find the keystores?
     */
    static String pathToStores = "../../../../../../etc";
    static String keyStoreFile = "keystore";
    static String trustStoreFile = "truststore";
    static String passwd = "passphrase";

    /*
     * Is the server ready to serve?
     */
    volatile static boolean serverReady = false;

    /*
     * Is the connection ready to close?
     */
    volatile static boolean closeReady = false;

    /*
     * Turn on SSL debugging?
     */
    static boolean debug = false;

    /*
     * Message posted
     */
    static String postMsg = "Testing HTTP post on a https server";

    /*
     * If the client or server is doing some kind of object creation
     * that the other side depends on, and that thread prematurely
     * exits, you may experience a hang.  The test harness will
     * terminate all hung threads after its timeout has expired,
     * currently 3 minutes by default, but you might try to be
     * smart about it....
     */

    /*
     * Define the server side of the test.
     *
     * If the server prematurely exits, serverReady will be set to true
     * to avoid infinite hangs.
     */
    void doServerSide() throws Exception {
        SSLServerSocketFactory sslssf =
            (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
        SSLServerSocket sslServerSocket =
            (SSLServerSocket) sslssf.createServerSocket(serverPort);
        serverPort = sslServerSocket.getLocalPort();

        /*
         * Signal Client, we're ready for his connect.
         */
        serverReady = true;

        SSLSocket sslSocket = (SSLSocket) sslServerSocket.accept();
        try {
            InputStream sslIS = sslSocket.getInputStream();
            OutputStream sslOS = sslSocket.getOutputStream();
            BufferedReader br =
                        new BufferedReader(new InputStreamReader(sslIS));
            PrintStream ps = new PrintStream(sslOS);

            // process HTTP POST request from client
            System.out.println("status line: "+br.readLine());

            ps.println("HTTP/1.1 307 Redirect");
            ps.println("Location: https://localhost:" + serverPort +
                                                            "/index.html\n\n");
            ps.flush();
            sslSocket = (SSLSocket) sslServerSocket.accept();
            sslOS = sslSocket.getOutputStream();
            ps = new PrintStream(sslOS);
            ps.println("HTTP/1.1 200 Redirect succeeded\n\n");
            ps.flush();
        } finally {
            // close the socket
            while (!closeReady) {
                Thread.sleep(50);
            }
            sslSocket.close();
            sslServerSocket.close();
        }
    }

    /*
     * Define the client side of the test.
     *
     * If the server prematurely exits, serverReady will be set to true
     * to avoid infinite hangs.
     */
    void doClientSide() throws Exception {
        HostnameVerifier reservedHV =
            HttpsURLConnection.getDefaultHostnameVerifier();
        try {
            /*
             * Wait for server to get started.
             */
            while (!serverReady) {
                Thread.sleep(50);
            }

            // Send HTTP POST request to server
            URL url = new URL("https://localhost:"+serverPort);

            HttpsURLConnection.setDefaultHostnameVerifier(
                                          new NameVerifier());
            HttpsURLConnection http = (HttpsURLConnection)url.openConnection();
            try {
                System.out.println("response header: "+http.getHeaderField(0));
                if (http.getResponseCode() != 200) {
                    throw new RuntimeException("test Failed");
                }
            } finally {
                http.disconnect();
                closeReady = true;
            }
        } finally {
            HttpsURLConnection.setDefaultHostnameVerifier(reservedHV);
        }
    }

    static class NameVerifier implements HostnameVerifier {
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }

    /*
     * =============================================================
     * The remainder is just support stuff
     */

    // use any free port by default
    volatile int serverPort = 0;

    volatile Exception serverException = null;
    volatile Exception clientException = null;

    public static void main(String[] args) throws Exception {
        String keyFilename =
            System.getProperty("test.src", "./") + "/" + pathToStores +
                "/" + keyStoreFile;
        String trustFilename =
            System.getProperty("test.src", "./") + "/" + pathToStores +
                "/" + trustStoreFile;

        System.setProperty("javax.net.ssl.keyStore", keyFilename);
        System.setProperty("javax.net.ssl.keyStorePassword", passwd);
        System.setProperty("javax.net.ssl.trustStore", trustFilename);
        System.setProperty("javax.net.ssl.trustStorePassword", passwd);

        if (debug)
            System.setProperty("javax.net.debug", "all");

        /*
         * Start the tests.
         */
        new Redirect();
    }

    Thread clientThread = null;
    Thread serverThread = null;

    /*
     * Primary constructor, used to drive remainder of the test.
     *
     * Fork off the other side, then do your work.
     */
    Redirect() throws Exception {
        if (separateServerThread) {
            startServer(true);
            startClient(false);
        } else {
            startClient(true);
            startServer(false);
        }

        /*
         * Wait for other side to close down.
         */
        if (separateServerThread) {
            serverThread.join();
        } else {
            clientThread.join();
        }

        /*
         * When we get here, the test is pretty much over.
         *
         * If the main thread excepted, that propagates back
         * immediately.  If the other thread threw an exception, we
         * should report back.
         */
        if (serverException != null)
            throw serverException;
        if (clientException != null)
            throw clientException;
    }

    void startServer(boolean newThread) throws Exception {
        if (newThread) {
            serverThread = new Thread() {
                public void run() {
                    try {
                        doServerSide();
                    } catch (Exception e) {
                        /*
                         * Our server thread just died.
                         *
                         * Release the client, if not active already...
                         */
                        System.err.println("Server died...");
                        serverReady = true;
                        serverException = e;
                    }
                }
            };
            serverThread.start();
        } else {
            doServerSide();
        }
    }

    void startClient(boolean newThread) throws Exception {
        if (newThread) {
            clientThread = new Thread() {
                public void run() {
                    try {
                        doClientSide();
                    } catch (Exception e) {
                        /*
                         * Our client thread just died.
                         */
                        System.err.println("Client died...");
                        clientException = e;
                    }
                }
            };
            clientThread.start();
        } else {
            doClientSide();
        }
    }
}

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