PerConnectionProxy.java revision 6073:cea72c2bf071
1/* 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 * @bug 4920526 26 * @summary Needs per connection proxy support for URLs 27 * @library ../../../sun/net/www/httptest/ 28 * @build ClosedChannelList TestHttpServer HttpTransaction HttpCallback 29 * @compile PerConnectionProxy.java 30 * @run main/othervm -Dhttp.proxyHost=inexistant -Dhttp.proxyPort=8080 PerConnectionProxy 31 */ 32 33import java.net.*; 34import java.io.*; 35import sun.net.www.*; 36 37public class PerConnectionProxy implements HttpCallback { 38 static TestHttpServer server; 39 40 public void request (HttpTransaction req) { 41 req.setResponseEntityBody ("Hello ."); 42 try { 43 req.sendResponse (200, "Ok"); 44 req.orderlyClose(); 45 } catch (IOException e) { 46 } 47 } 48 49 public static void main(String[] args) { 50 try { 51 server = new TestHttpServer (new PerConnectionProxy(), 1, 10, 0); 52 ProxyServer pserver = new ProxyServer(InetAddress.getByName("localhost"), server.getLocalPort()); 53 // start proxy server 54 new Thread(pserver).start(); 55 56 URL url = new URL("http://localhost:"+server.getLocalPort()); 57 58 // for non existing proxy expect an IOException 59 try { 60 InetSocketAddress isa = InetSocketAddress.createUnresolved("inexistent", 8080); 61 Proxy proxy = new Proxy(Proxy.Type.HTTP, isa); 62 HttpURLConnection urlc = (HttpURLConnection)url.openConnection (proxy); 63 InputStream is = urlc.getInputStream (); 64 is.close(); 65 throw new RuntimeException("non existing per connection proxy should lead to IOException"); 66 } catch (IOException ioex) { 67 // expected 68 } 69 70 // for NO_PROXY, expect direct connection 71 try { 72 HttpURLConnection urlc = (HttpURLConnection)url.openConnection (Proxy.NO_PROXY); 73 int respCode = urlc.getResponseCode(); 74 urlc.disconnect(); 75 } catch (IOException ioex) { 76 throw new RuntimeException("direct connection should succeed :"+ioex.getMessage()); 77 } 78 79 // for a normal proxy setting expect to see connection 80 // goes through that proxy 81 try { 82 InetSocketAddress isa = InetSocketAddress.createUnresolved("localhost", pserver.getPort()); 83 Proxy p = new Proxy(Proxy.Type.HTTP, isa); 84 HttpURLConnection urlc = (HttpURLConnection)url.openConnection (p); 85 int respCode = urlc.getResponseCode(); 86 urlc.disconnect(); 87 } catch (IOException ioex) { 88 throw new RuntimeException("connection through a local proxy should succeed :"+ioex.getMessage()); 89 } 90 91 } catch (Exception e) { 92 throw new RuntimeException(e); 93 } finally { 94 if (server != null) { 95 server.terminate(); 96 } 97 } 98 99 } 100 101 static class ProxyServer extends Thread { 102 private static ServerSocket ss = null; 103 104 // client requesting for a tunnel 105 private Socket clientSocket = null; 106 107 /* 108 * Origin server's address and port that the client 109 * wants to establish the tunnel for communication. 110 */ 111 private InetAddress serverInetAddr; 112 private int serverPort; 113 114 public ProxyServer(InetAddress server, int port) throws IOException { 115 serverInetAddr = server; 116 serverPort = port; 117 ss = new ServerSocket(0); 118 } 119 120 public void run() { 121 try { 122 clientSocket = ss.accept(); 123 processRequests(); 124 } catch (Exception e) { 125 System.out.println("Proxy Failed: " + e); 126 e.printStackTrace(); 127 try { 128 ss.close(); 129 } 130 catch (IOException excep) { 131 System.out.println("ProxyServer close error: " + excep); 132 excep.printStackTrace(); 133 } 134 } 135 } 136 137 private void processRequests() throws Exception { 138 // connection set to the tunneling mode 139 140 Socket serverSocket = new Socket(serverInetAddr, serverPort); 141 ProxyTunnel clientToServer = new ProxyTunnel( 142 clientSocket, serverSocket); 143 ProxyTunnel serverToClient = new ProxyTunnel( 144 serverSocket, clientSocket); 145 clientToServer.start(); 146 serverToClient.start(); 147 System.out.println("Proxy: Started tunneling......."); 148 149 clientToServer.join(); 150 serverToClient.join(); 151 System.out.println("Proxy: Finished tunneling........"); 152 153 clientToServer.close(); 154 serverToClient.close(); 155 156 } 157 158 /** 159*************************************************************** 160* helper methods follow 161*************************************************************** 162*/ 163 public int getPort() { 164 return ss.getLocalPort(); 165 } 166 /* 167 * This inner class provides unidirectional data flow through the sockets 168 * by continuously copying bytes from the input socket onto the output 169 * socket, until both sockets are open and EOF has not been received. 170 */ 171 static class ProxyTunnel extends Thread { 172 Socket sockIn; 173 Socket sockOut; 174 InputStream input; 175 OutputStream output; 176 177 public ProxyTunnel(Socket sockIn, Socket sockOut) 178 throws Exception { 179 this.sockIn = sockIn; 180 this.sockOut = sockOut; 181 input = sockIn.getInputStream(); 182 output = sockOut.getOutputStream(); 183 } 184 185 public void run() { 186 int BUFFER_SIZE = 400; 187 byte[] buf = new byte[BUFFER_SIZE]; 188 int bytesRead = 0; 189 int count = 0; // keep track of the amount of data transfer 190 191 try { 192 while ((bytesRead = input.read(buf)) >= 0) { 193 output.write(buf, 0, bytesRead); 194 output.flush(); 195 count += bytesRead; 196 } 197 } catch (IOException e) { 198 /* 199 * The peer end has closed the connection 200 * we will close the tunnel 201 */ 202 close(); 203 } 204 } 205 206 public void close() { 207 try { 208 if (!sockIn.isClosed()) 209 sockIn.close(); 210 if (!sockOut.isClosed()) 211 sockOut.close(); 212 } catch (IOException ignored) { } 213 } 214 } 215 216 } 217} 218