241 lines
8.8 KiB
Java
241 lines
8.8 KiB
Java
/*
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* Copyright (c) 2003, 2022, 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 4920526
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* @summary Needs per connection proxy support for URLs
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* @library /test/lib
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* @compile PerConnectionProxy.java
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* @run main/othervm -Dhttp.proxyHost=inexistant -Dhttp.proxyPort=8080 PerConnectionProxy
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*/
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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.PrintWriter;
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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.ServerSocket;
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import java.net.Socket;
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import java.net.URL;
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import java.nio.charset.Charset;
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import java.util.concurrent.Executors;
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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 PerConnectionProxy {
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static HttpServer server;
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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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server = HttpServer.create(new InetSocketAddress(loopbackAddress, 0), 10, "/", new PerConnectionProxyHandler());
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server.setExecutor(Executors.newSingleThreadExecutor());
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server.start();
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ProxyServer pserver = new ProxyServer(loopbackAddress, 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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.toURLUnchecked();
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// for non existing proxy expect an IOException
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try {
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InetSocketAddress isa = InetSocketAddress.createUnresolved("inexistent", 8080);
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Proxy proxy = new Proxy(Proxy.Type.HTTP, isa);
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HttpURLConnection urlc = (HttpURLConnection)url.openConnection (proxy);
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InputStream is = urlc.getInputStream ();
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is.close();
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throw new RuntimeException("non existing per connection proxy should lead to IOException");
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} catch (IOException ioex) {
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// expected
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}
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// for NO_PROXY, expect direct connection
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try {
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HttpURLConnection urlc = (HttpURLConnection)url.openConnection (Proxy.NO_PROXY);
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int respCode = urlc.getResponseCode();
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urlc.disconnect();
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} catch (IOException ioex) {
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throw new RuntimeException("direct connection should succeed :"+ioex.getMessage());
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}
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// for a normal proxy setting expect to see connection
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// goes through that proxy
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try {
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InetSocketAddress isa = InetSocketAddress.createUnresolved(
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loopbackAddress.getHostAddress(),
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pserver.getPort());
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Proxy p = new Proxy(Proxy.Type.HTTP, isa);
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HttpURLConnection urlc = (HttpURLConnection)url.openConnection (p);
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int respCode = urlc.getResponseCode();
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urlc.disconnect();
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} catch (IOException ioex) {
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throw new RuntimeException("connection through a local proxy should succeed :"+ioex.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(1);
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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 for 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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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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}
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catch (IOException excep) {
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System.out.println("ProxyServer close error: " + excep);
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excep.printStackTrace();
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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 the 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 the input socket onto the output
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* socket, until 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)
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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 the amount of data transfer
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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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* The peer end has closed the connection
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* we will close the 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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class PerConnectionProxyHandler implements HttpHandler {
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@Override
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public void handle(HttpExchange exchange) throws IOException {
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try {
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exchange.sendResponseHeaders(200, 0);
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} catch (IOException e) {
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}
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try(PrintWriter pw = new PrintWriter(exchange.getResponseBody(), false, Charset.forName("UTF-8"))) {
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pw.print("Hello .");
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}
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}
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}
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