012dffcd27
Modified method description to disambiguate when false is returned and altered implementation Reviewed-by: dfuchs, chegar, vtewari
336 lines
13 KiB
Java
336 lines
13 KiB
Java
/*
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* Copyright (c) 2019, 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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/* @test
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* @bug 8231632
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* @summary HttpURLConnection::usingProxy could specify that it lazily evaluates the fact
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* @modules java.base/sun.net.www
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* @library /test/lib
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* @run main/othervm HttpURLConnUsingProxy
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*/
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import java.io.*;
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import java.net.*;
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import java.nio.charset.StandardCharsets;
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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 jdk.test.lib.net.URIBuilder;
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public class HttpURLConnUsingProxy {
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static HttpServer server;
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static Proxy proxy;
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static InetSocketAddress isa;
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static class Handler implements HttpHandler {
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@Override
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public void handle(HttpExchange exchange) throws IOException {
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byte[] response = "Hello World!".getBytes(StandardCharsets.UTF_8);
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try (InputStream req = exchange.getRequestBody()) {
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req.readAllBytes();
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}
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exchange.sendResponseHeaders(200, response.length);
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try (OutputStream resp = exchange.getResponseBody()) {
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resp.write(response);
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}
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}
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}
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public static void main(String[] args) {
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try {
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InetAddress loopbackAddress = InetAddress.getLoopbackAddress();
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InetSocketAddress addr = new InetSocketAddress(loopbackAddress, 0);
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server = HttpServer.create(addr, 0);
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server.createContext("/HttpURLConnUsingProxy/http1/", new Handler());
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server.start();
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ProxyServer pserver = new ProxyServer(loopbackAddress,
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server.getAddress().getPort());
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// Start proxy server
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new Thread(pserver).start();
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URL url = URIBuilder.newBuilder()
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.scheme("http")
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.loopback()
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.port(server.getAddress().getPort())
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.path("/HttpURLConnUsingProxy/http1/x.html")
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.toURLUnchecked();
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// NO_PROXY
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try {
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HttpURLConnection urlc =
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(HttpURLConnection) url.openConnection(Proxy.NO_PROXY);
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assertEqual(urlc.usingProxy(), false);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), false);
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urlc.disconnect();
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} catch (IOException ioe) {
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throw new RuntimeException("Direct connection should succeed: "
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+ ioe.getMessage());
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}
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// Non-existing proxy
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try {
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isa = InetSocketAddress.createUnresolved("inexistent", 8080);
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proxy = new Proxy(Proxy.Type.HTTP, isa);
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection(proxy);
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assertEqual(urlc.usingProxy(), true);
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InputStream is = urlc.getInputStream();
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is.close();
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throw new RuntimeException("Non-existing proxy should cause IOException");
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} catch (IOException ioe) {
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// expected
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}
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// Normal proxy settings
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try {
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isa = InetSocketAddress.createUnresolved(loopbackAddress.getHostAddress(),
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pserver.getPort());
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proxy = new Proxy(Proxy.Type.HTTP, isa);
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection(proxy);
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assertEqual(urlc.usingProxy(), true);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), true);
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urlc.disconnect();
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} catch (IOException ioe) {
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throw new RuntimeException("Connection through local proxy should succeed: "
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+ ioe.getMessage());
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}
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// Reuse proxy with new HttpURLConnection
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try {
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection(proxy);
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assertEqual(urlc.usingProxy(), true);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), true);
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read(urlc.getInputStream());
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assertEqual(urlc.usingProxy(), true);
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} catch (IOException ioe) {
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throw new RuntimeException("Connection through local proxy should succeed: "
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+ ioe.getMessage());
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}
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// Reuse proxy with existing HttpURLConnection
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try {
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection(proxy);
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assertEqual(urlc.usingProxy(), true);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), true);
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read(urlc.getInputStream());
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assertEqual(urlc.usingProxy(), true);
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urlc.disconnect();
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} catch (IOException ioe) {
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throw new RuntimeException("Connection through local proxy should succeed: "
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+ ioe.getMessage());
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}
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// ProxySelector with normal proxy settings
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try {
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ProxySelector.setDefault(ProxySelector.of(isa));
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection();
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assertEqual(urlc.usingProxy(), false);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), true);
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read(urlc.getInputStream());
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assertEqual(urlc.usingProxy(), true);
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urlc.disconnect();
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assertEqual(urlc.usingProxy(), true);
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} catch (IOException ioe) {
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throw new RuntimeException("Connection through local proxy should succeed: "
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+ ioe.getMessage());
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}
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// ProxySelector with proxying disabled
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try {
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ProxySelector.setDefault(ProxySelector.of(null));
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection();
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assertEqual(urlc.usingProxy(), false);
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urlc.getResponseCode();
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assertEqual(urlc.usingProxy(), false);
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read(urlc.getInputStream());
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assertEqual(urlc.usingProxy(), false);
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} catch (IOException ioe) {
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throw new RuntimeException("Direct connection should succeed: "
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+ ioe.getMessage());
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}
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// ProxySelector overwritten
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try {
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ProxySelector.setDefault(ProxySelector.of(isa));
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HttpURLConnection urlc = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);
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assertEqual(urlc.usingProxy(), false);
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urlc.disconnect();
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} catch (IOException ioe) {
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throw new RuntimeException("Direct connection should succeed: "
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+ ioe.getMessage());
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}
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} catch (Exception e) {
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throw new RuntimeException(e);
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} finally {
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if (server != null) {
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server.stop(0);
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}
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}
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}
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static class ProxyServer extends Thread {
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private static ServerSocket ss = null;
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// Client requesting a tunnel
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private Socket clientSocket = null;
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/*
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* Origin server's address and port that the client
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* wants to establish the tunnel for communication.
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*/
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private InetAddress serverInetAddr;
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private int serverPort;
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public ProxyServer(InetAddress server, int port) throws IOException {
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serverInetAddr = server;
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serverPort = port;
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ss = new ServerSocket(0, 0, InetAddress.getLoopbackAddress());
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}
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public void run() {
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while (true) {
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try {
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clientSocket = ss.accept();
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processRequests();
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} catch (Exception e) {
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System.out.println("Proxy failed: " + e);
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e.printStackTrace();
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try {
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ss.close();
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} catch (IOException ioe) {
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System.out.println("ProxyServer close error: " + ioe);
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ioe.printStackTrace();
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}
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}
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}
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}
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private void processRequests() throws Exception {
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// Connection set to tunneling mode
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Socket serverSocket = new Socket(serverInetAddr, serverPort);
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ProxyTunnel clientToServer = new ProxyTunnel(
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clientSocket, serverSocket);
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ProxyTunnel serverToClient = new ProxyTunnel(
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serverSocket, clientSocket);
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clientToServer.start();
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serverToClient.start();
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System.out.println("Proxy: Started tunneling...");
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clientToServer.join();
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serverToClient.join();
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System.out.println("Proxy: Finished tunneling...");
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clientToServer.close();
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serverToClient.close();
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}
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/**
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* **************************************************************
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* Helper methods follow
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* **************************************************************
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*/
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public int getPort() {
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return ss.getLocalPort();
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}
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/*
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* This inner class provides unidirectional data flow through the sockets
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* by continuously copying bytes from input socket to output socket
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* while both sockets are open and EOF has not been received.
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*/
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static class ProxyTunnel extends Thread {
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Socket sockIn;
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Socket sockOut;
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InputStream input;
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OutputStream output;
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public ProxyTunnel(Socket sockIn, Socket sockOut) throws Exception {
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this.sockIn = sockIn;
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this.sockOut = sockOut;
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input = sockIn.getInputStream();
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output = sockOut.getOutputStream();
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}
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public void run() {
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int BUFFER_SIZE = 400;
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byte[] buf = new byte[BUFFER_SIZE];
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int bytesRead = 0;
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int count = 0; // Keep track of amount of data transferred
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try {
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while ((bytesRead = input.read(buf)) >= 0) {
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output.write(buf, 0, bytesRead);
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output.flush();
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count += bytesRead;
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}
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} catch (IOException e) {
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/*
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* Peer end has closed connection
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* so we close tunnel
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*/
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close();
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}
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}
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public void close() {
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try {
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if (!sockIn.isClosed())
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sockIn.close();
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if (!sockOut.isClosed())
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sockOut.close();
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} catch (IOException ignored) {
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}
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}
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}
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}
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private static void assertEqual(boolean usingProxy, boolean expected) {
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if (usingProxy != expected) {
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throw new RuntimeException("Expected: " + expected
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+ " but usingProxy returned: " + usingProxy);
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}
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}
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private static String read(InputStream inputStream) throws IOException {
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StringBuilder sb = new StringBuilder();
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BufferedReader bufferedReader = new BufferedReader(
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new InputStreamReader(inputStream, StandardCharsets.UTF_8));
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int i = bufferedReader.read();
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while (i != -1) {
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sb.append((char) i);
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i = bufferedReader.read();
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}
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bufferedReader.close();
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return sb.toString();
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}
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}
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