jdk/test/java/net/httpclient/ProxyTest.java
author dfuchs
Tue, 08 Aug 2017 12:32:41 +0100
changeset 46138 5982afcbf9dc
child 46157 f3c2dcb8d8fe
permissions -rw-r--r--
8185852: HttpConnection should resolve addresses before SocketChannel.connect() is called Summary: HttpConnection checks whether the proxy address is resolved and if not attempts to resolve it before creating the underlying connection that connects to the proxy. Reviewed-by: chegar
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/*
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 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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import com.sun.net.httpserver.HttpContext;
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import com.sun.net.httpserver.HttpExchange;
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import com.sun.net.httpserver.HttpHandler;
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import com.sun.net.httpserver.HttpServer;
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import com.sun.net.httpserver.HttpsConfigurator;
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import com.sun.net.httpserver.HttpsParameters;
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import com.sun.net.httpserver.HttpsServer;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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import java.io.Writer;
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import java.net.HttpURLConnection;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.Proxy;
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import java.net.ProxySelector;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.nio.charset.StandardCharsets;
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import java.security.NoSuchAlgorithmException;
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import javax.net.ssl.HostnameVerifier;
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import javax.net.ssl.HttpsURLConnection;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSession;
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import jdk.incubator.http.HttpClient;
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import jdk.incubator.http.HttpRequest;
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import jdk.incubator.http.HttpResponse;
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import jdk.testlibrary.SimpleSSLContext;
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/**
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 * @test
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 * @bug 8185852
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 * @summary verifies that passing a proxy with an unresolved address does
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 *          not cause  java.nio.channels.UnresolvedAddressException
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 * @modules jdk.incubator.httpclient
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 * @library /lib/testlibrary/
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 * @build jdk.testlibrary.SimpleSSLContext ProxyTest
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 * @run main/othervm ProxyTest
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 * @author danielfuchs
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 */
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public class ProxyTest {
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    static {
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        try {
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            HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
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                    public boolean verify(String hostname, SSLSession session) {
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                        return true;
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                    }
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                });
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            SSLContext.setDefault(new SimpleSSLContext().get());
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        } catch (IOException ex) {
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            throw new ExceptionInInitializerError(ex);
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        }
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    }
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    static final String RESPONSE = "<html><body><p>Hello World!</body></html>";
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    static final String PATH = "/foo/";
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    static HttpServer createHttpsServer() throws IOException, NoSuchAlgorithmException {
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        HttpsServer server = com.sun.net.httpserver.HttpsServer.create();
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        HttpContext context = server.createContext(PATH);
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        context.setHandler(new HttpHandler() {
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            @Override
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            public void handle(HttpExchange he) throws IOException {
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                he.getResponseHeaders().add("encoding", "UTF-8");
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                he.sendResponseHeaders(200, RESPONSE.length());
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                he.getResponseBody().write(RESPONSE.getBytes(StandardCharsets.UTF_8));
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                he.close();
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            }
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        });
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        server.setHttpsConfigurator(new Configurator(SSLContext.getDefault()));
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        server.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0);
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        return server;
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    }
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    public static void main(String[] args)
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            throws IOException,
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            URISyntaxException,
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            NoSuchAlgorithmException,
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            InterruptedException
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    {
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        HttpServer server = createHttpsServer();
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        server.start();
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        try {
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            test(server, HttpClient.Version.HTTP_1_1);
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            // test(server, HttpClient.Version.HTTP_2);
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        } finally {
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            server.stop(0);
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            System.out.println("Server stopped");
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        }
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    }
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    public static void test(HttpServer server, HttpClient.Version version)
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            throws IOException,
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            URISyntaxException,
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            NoSuchAlgorithmException,
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            InterruptedException
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    {
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        System.out.println("Server is: " + server.getAddress().toString());
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        System.out.println("Verifying communication with server");
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        URI uri = new URI("https:/" + server.getAddress().toString() + PATH + "x");
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        try (InputStream is = uri.toURL().openConnection().getInputStream()) {
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            String resp = new String(is.readAllBytes(), StandardCharsets.UTF_8);
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            System.out.println(resp);
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            if (!RESPONSE.equals(resp)) {
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                throw new AssertionError("Unexpected response from server");
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            }
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        }
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        System.out.println("Communication with server OK");
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        TunnelingProxy proxy = new TunnelingProxy(server);
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        proxy.start();
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        try {
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            System.out.println("Proxy started");
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            Proxy p = new Proxy(Proxy.Type.HTTP,
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                    InetSocketAddress.createUnresolved("localhost", proxy.getAddress().getPort()));
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            System.out.println("Verifying communication with proxy");
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            HttpURLConnection conn = (HttpURLConnection)uri.toURL().openConnection(p);
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            try (InputStream is = conn.getInputStream()) {
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                String resp = new String(is.readAllBytes(), StandardCharsets.UTF_8);
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                System.out.println(resp);
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                if (!RESPONSE.equals(resp)) {
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                    throw new AssertionError("Unexpected response from proxy");
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                }
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            }
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            System.out.println("Communication with proxy OK");
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            System.out.println("\nReal test begins here.");
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            System.out.println("Setting up request with HttpClient for version: "
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                    + version.name());
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            ProxySelector ps = ProxySelector.of(
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                    InetSocketAddress.createUnresolved("localhost", proxy.getAddress().getPort()));
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            HttpClient client = HttpClient.newBuilder()
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                .version(version)
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                .proxy(ps)
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                .build();
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            HttpRequest request = HttpRequest.newBuilder()
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                .uri(uri)
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                .GET()
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                .build();
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            System.out.println("Sending request with HttpClient");
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            HttpResponse<String> response
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                = client.send(request, HttpResponse.BodyHandler.asString());
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            System.out.println("Got response");
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            String resp = response.body();
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            System.out.println("Received: " + resp);
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            if (!RESPONSE.equals(resp)) {
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                throw new AssertionError("Unexpected response");
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            }
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        } finally {
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            System.out.println("Stopping proxy");
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            proxy.stop();
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            System.out.println("Proxy stopped");
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   182
        }
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    }
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    static class TunnelingProxy {
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        final Thread accept;
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        final ServerSocket ss;
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        final boolean DEBUG = false;
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        final HttpServer serverImpl;
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        TunnelingProxy(HttpServer serverImpl) throws IOException {
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            this.serverImpl = serverImpl;
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            ss = new ServerSocket();
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            accept = new Thread(this::accept);
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        }
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        void start() throws IOException {
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            ss.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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            accept.start();
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        }
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        // Pipe the input stream to the output stream.
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        private synchronized Thread pipe(InputStream is, OutputStream os, char tag) {
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   203
            return new Thread("TunnelPipe("+tag+")") {
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                @Override
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                public void run() {
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                    try {
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                        try {
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                            int c;
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                            while ((c = is.read()) != -1) {
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                                os.write(c);
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                                os.flush();
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                                // if DEBUG prints a + or a - for each transferred
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                                // character.
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                                if (DEBUG) System.out.print(tag);
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                            }
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                            is.close();
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   217
                        } finally {
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                            os.close();
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                        }
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                    } catch (IOException ex) {
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                        if (DEBUG) ex.printStackTrace(System.out);
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                    }
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                }
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            };
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        }
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        public InetSocketAddress getAddress() {
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            return new InetSocketAddress(ss.getInetAddress(), ss.getLocalPort());
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        }
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        // This is a bit shaky. It doesn't handle continuation
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        // lines, but our client shouldn't send any.
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        // Read a line from the input stream, swallowing the final
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        // \r\n sequence. Stops at the first \n, doesn't complain
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        // if it wasn't preceded by '\r'.
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        //
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        String readLine(InputStream r) throws IOException {
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            StringBuilder b = new StringBuilder();
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            int c;
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   240
            while ((c = r.read()) != -1) {
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   241
                if (c == '\n') break;
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                b.appendCodePoint(c);
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   243
            }
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   244
            if (b.codePointAt(b.length() -1) == '\r') {
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   245
                b.delete(b.length() -1, b.length());
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   246
            }
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            return b.toString();
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   248
        }
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   249
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        public void accept() {
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   251
            Socket clientConnection = null;
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   252
            try {
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   253
                while (true) {
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   254
                    System.out.println("Tunnel: Waiting for client");
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   255
                    Socket previous = clientConnection;
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   256
                    try {
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   257
                        clientConnection = ss.accept();
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   258
                    } catch (IOException io) {
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   259
                        if (DEBUG) io.printStackTrace(System.out);
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                        break;
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   261
                    } finally {
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                        // we have only 1 client at a time, so it is safe
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   263
                        // to close the previous connection here
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   264
                        if (previous != null) previous.close();
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   265
                    }
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   266
                    System.out.println("Tunnel: Client accepted");
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                    Socket targetConnection = null;
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                    InputStream  ccis = clientConnection.getInputStream();
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                    OutputStream ccos = clientConnection.getOutputStream();
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                    Writer w = new OutputStreamWriter(ccos, "UTF-8");
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                    PrintWriter pw = new PrintWriter(w);
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                    System.out.println("Tunnel: Reading request line");
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                    String requestLine = readLine(ccis);
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                    System.out.println("Tunnel: Request status line: " + requestLine);
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   275
                    if (requestLine.startsWith("CONNECT ")) {
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                        // We should probably check that the next word following
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                        // CONNECT is the host:port of our HTTPS serverImpl.
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   278
                        // Some improvement for a followup!
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                        // Read all headers until we find the empty line that
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                        // signals the end of all headers.
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   282
                        while(!requestLine.equals("")) {
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   283
                            System.out.println("Tunnel: Reading header: "
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   284
                                               + (requestLine = readLine(ccis)));
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                        }
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   286
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                        // Open target connection
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   288
                        targetConnection = new Socket(
5982afcbf9dc 8185852: HttpConnection should resolve addresses before SocketChannel.connect() is called
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                                serverImpl.getAddress().getAddress(),
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                                serverImpl.getAddress().getPort());
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   291
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                        // Then send the 200 OK response to the client
5982afcbf9dc 8185852: HttpConnection should resolve addresses before SocketChannel.connect() is called
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                        System.out.println("Tunnel: Sending "
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                                           + "HTTP/1.1 200 OK\r\n\r\n");
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                        pw.print("HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
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                        pw.flush();
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                    } else {
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                        // This should not happen.
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                        throw new IOException("Tunnel: Unexpected status line: "
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                                           + requestLine);
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                    }
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                    // Pipe the input stream of the client connection to the
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                    // output stream of the target connection and conversely.
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                    // Now the client and target will just talk to each other.
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                    System.out.println("Tunnel: Starting tunnel pipes");
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                    Thread t1 = pipe(ccis, targetConnection.getOutputStream(), '+');
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                    Thread t2 = pipe(targetConnection.getInputStream(), ccos, '-');
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                    t1.start();
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                    t2.start();
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                    // We have only 1 client... wait until it has finished before
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                    // accepting a new connection request.
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                    // System.out.println("Tunnel: Waiting for pipes to close");
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                    // t1.join();
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                    // t2.join();
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                    System.out.println("Tunnel: Done - waiting for next client");
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                }
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            } catch (Throwable ex) {
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                try {
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                    ss.close();
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                } catch (IOException ex1) {
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                    ex.addSuppressed(ex1);
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                }
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                ex.printStackTrace(System.err);
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            }
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        }
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        void stop() throws IOException {
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            ss.close();
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        }
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    }
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    static class Configurator extends HttpsConfigurator {
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        public Configurator(SSLContext ctx) {
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            super(ctx);
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        }
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        @Override
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        public void configure (HttpsParameters params) {
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            params.setSSLParameters (getSSLContext().getSupportedSSLParameters());
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        }
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    }
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}