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Java example source code file (HttpsProxyStackOverflow.java)

This example Java source code file (HttpsProxyStackOverflow.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

authenticator, badauthproxyserver, httpsproxystackoverflow, httpsurlconnection, inetsocketaddress, inputstream, ioexception, net, network, passwordauthentication, runnable, serversocket, ssl, thread, url, us\-ascii, wallyworld

The HttpsProxyStackOverflow.java Java example source code

/*
 * Copyright (c) 2011, 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 6670868
 * @summary StackOverFlow with bad authenticated Proxy tunnels
 * @run main/othervm HttpsProxyStackOverflow
 *
 * No way to reserve default Authenticator, need to run in othervm mode.
 */

import java.io.IOException;
import java.io.InputStream;
import java.net.Authenticator;
import java.net.Proxy;
import java.net.InetSocketAddress;
import java.net.PasswordAuthentication;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;

public class HttpsProxyStackOverflow {

    public static void main(String[] args) throws IOException {
        BadAuthProxyServer server = startServer();
        doClient(server);
    }

    static void doClient(BadAuthProxyServer server) throws IOException {
        // url doesn't matter since we will never make the connection
        URL url = new URL("https://anythingwilldo/");
        HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(
                      new Proxy(Proxy.Type.HTTP,
                      new InetSocketAddress("localhost", server.getPort())));
        try (InputStream is = conn.getInputStream()) {
        } catch(IOException unused) {
            // no real server, IOException is expected.
            // failure if StackOverflowError
        } finally {
            server.done();
        }
    }

    static BadAuthProxyServer startServer() throws IOException {
        Authenticator.setDefault(new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("xyz", "xyz".toCharArray());
            }
            });

        BadAuthProxyServer server = new BadAuthProxyServer(new ServerSocket(0));
        Thread serverThread = new Thread(server);
        serverThread.start();
        return server;
    }

    static class BadAuthProxyServer implements Runnable {
        private ServerSocket ss;
        private boolean done;

        BadAuthProxyServer(ServerSocket ss) { this.ss = ss; }

        public void run() {
            try {
               while (!done) {
                    Socket s = ss.accept();
                    s.getOutputStream().write(
                            ("HTTP/1.1 407\nProxy-Authenticate:Basic " +
                            "realm=\"WallyWorld\"\n\n").getBytes("US-ASCII"));

                    s.close();

                    s = ss.accept();
                    s.close();
                }
            } catch (IOException e) {
                // Ignore IOException when the main thread calls done
            } finally {
                try { ss.close(); } catch (IOException e) {}
            }
        }

        int getPort() {
            return ss.getLocalPort();
        }

        void done() {
            try { ss.close(); } catch (IOException e) {}
            done = true;
        }
    }
}

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