J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4636628 |
| 27 | * @summary HttpURLConnection duplicates HTTP GET requests when used with multiple threads |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * This tests keep-alive behavior using chunkedinputstreams |
| 32 | * It checks that keep-alive connections are used and also |
| 33 | * that requests are not being repeated (due to errors) |
| 34 | * |
| 35 | * It also checks that the keepalive connections are closed eventually |
| 36 | * because the test will not terminate if the connections |
| 37 | * are not closed by the keep-alive timer. |
| 38 | */ |
| 39 | |
| 40 | import java.net.*; |
| 41 | import java.io.*; |
| 42 | |
| 43 | public class MultiThreadTest extends Thread { |
| 44 | |
| 45 | /* |
| 46 | * Is debugging enabled - start with -d to enable. |
| 47 | */ |
| 48 | static boolean debug = false; |
| 49 | |
| 50 | static Object threadlock = new Object (); |
| 51 | static int threadCounter = 0; |
| 52 | |
| 53 | static Object getLock() { return threadlock; } |
| 54 | |
| 55 | static void debug(String msg) { |
| 56 | if (debug) |
| 57 | System.out.println(msg); |
| 58 | } |
| 59 | |
| 60 | static int reqnum = 0; |
| 61 | |
| 62 | void doRequest(String uri) throws Exception { |
| 63 | URL url = new URL(uri + "?foo="+reqnum); |
| 64 | reqnum ++; |
| 65 | HttpURLConnection http = (HttpURLConnection)url.openConnection(); |
| 66 | |
| 67 | InputStream in = http.getInputStream(); |
| 68 | byte b[] = new byte[100]; |
| 69 | int total = 0; |
| 70 | int n; |
| 71 | do { |
| 72 | n = in.read(b); |
| 73 | if (n > 0) total += n; |
| 74 | } while (n > 0); |
| 75 | debug ("client: read " + total + " bytes"); |
| 76 | in.close(); |
| 77 | http.disconnect(); |
| 78 | } |
| 79 | |
| 80 | String uri; |
| 81 | byte[] b; |
| 82 | int requests; |
| 83 | |
| 84 | MultiThreadTest(int port, int requests) throws Exception { |
| 85 | uri = "http://localhost:" + |
| 86 | port + "/foo.html"; |
| 87 | |
| 88 | b = new byte [256]; |
| 89 | this.requests = requests; |
| 90 | |
| 91 | synchronized (threadlock) { |
| 92 | threadCounter ++; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | public void run () { |
| 97 | try { |
| 98 | for (int i=0; i<requests; i++) { |
| 99 | doRequest (uri); |
| 100 | } |
| 101 | } catch (Exception e) { |
| 102 | throw new RuntimeException (e.getMessage()); |
| 103 | } |
| 104 | synchronized (threadlock) { |
| 105 | threadCounter --; |
| 106 | if (threadCounter == 0) { |
| 107 | threadlock.notifyAll(); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | static int threads=5; |
| 113 | |
| 114 | public static void main(String args[]) throws Exception { |
| 115 | |
| 116 | int x = 0, arg_len = args.length; |
| 117 | int requests = 20; |
| 118 | |
| 119 | if (arg_len > 0 && args[0].equals("-d")) { |
| 120 | debug = true; |
| 121 | x = 1; |
| 122 | arg_len --; |
| 123 | } |
| 124 | if (arg_len > 0) { |
| 125 | threads = Integer.parseInt (args[x]); |
| 126 | requests = Integer.parseInt (args[x+1]); |
| 127 | } |
| 128 | |
| 129 | /* start the server */ |
| 130 | ServerSocket ss = new ServerSocket(0); |
| 131 | Server svr = new Server(ss); |
| 132 | svr.start(); |
| 133 | |
| 134 | Object lock = MultiThreadTest.getLock(); |
| 135 | synchronized (lock) { |
| 136 | for (int i=0; i<threads; i++) { |
| 137 | MultiThreadTest t = new MultiThreadTest(ss.getLocalPort(), requests); |
| 138 | t.start (); |
| 139 | } |
| 140 | try { |
| 141 | lock.wait(); |
| 142 | } catch (InterruptedException e) {} |
| 143 | } |
| 144 | |
| 145 | // shutdown server - we're done. |
| 146 | svr.shutdown(); |
| 147 | |
| 148 | int cnt = svr.connectionCount(); |
| 149 | MultiThreadTest.debug("Connections = " + cnt); |
| 150 | int reqs = Worker.getRequests (); |
| 151 | MultiThreadTest.debug("Requests = " + reqs); |
| 152 | System.out.println ("Connection count = " + cnt + " Request count = " + reqs); |
| 153 | if (cnt > threads) { // could be less |
| 154 | throw new RuntimeException ("Expected "+threads + " connections: used " +cnt); |
| 155 | } |
| 156 | if (reqs != threads*requests) { |
| 157 | throw new RuntimeException ("Expected "+ threads*requests+ " requests: got " +reqs); |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * Server thread to accept connection and create worker threads |
| 164 | * to service each connection. |
| 165 | */ |
| 166 | class Server extends Thread { |
| 167 | ServerSocket ss; |
| 168 | int connectionCount; |
| 169 | boolean shutdown = false; |
| 170 | |
| 171 | Server(ServerSocket ss) { |
| 172 | this.ss = ss; |
| 173 | } |
| 174 | |
| 175 | public synchronized int connectionCount() { |
| 176 | return connectionCount; |
| 177 | } |
| 178 | |
| 179 | public synchronized void shutdown() { |
| 180 | shutdown = true; |
| 181 | } |
| 182 | |
| 183 | public void run() { |
| 184 | try { |
| 185 | ss.setSoTimeout(2000); |
| 186 | |
| 187 | for (;;) { |
| 188 | Socket s; |
| 189 | try { |
| 190 | MultiThreadTest.debug("server: calling accept."); |
| 191 | s = ss.accept(); |
| 192 | MultiThreadTest.debug("server: return accept."); |
| 193 | } catch (SocketTimeoutException te) { |
| 194 | MultiThreadTest.debug("server: STE"); |
| 195 | synchronized (this) { |
| 196 | if (shutdown) { |
| 197 | MultiThreadTest.debug("server: Shuting down."); |
| 198 | return; |
| 199 | } |
| 200 | } |
| 201 | continue; |
| 202 | } |
| 203 | |
| 204 | int id; |
| 205 | synchronized (this) { |
| 206 | id = connectionCount++; |
| 207 | } |
| 208 | |
| 209 | Worker w = new Worker(s, id); |
| 210 | w.start(); |
| 211 | MultiThreadTest.debug("server: Started worker " + id); |
| 212 | } |
| 213 | |
| 214 | } catch (Exception e) { |
| 215 | e.printStackTrace(); |
| 216 | } finally { |
| 217 | try { |
| 218 | ss.close(); |
| 219 | } catch (Exception e) { } |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /* |
| 225 | * Worker thread to service single connection - can service |
| 226 | * multiple http requests on same connection. |
| 227 | */ |
| 228 | class Worker extends Thread { |
| 229 | Socket s; |
| 230 | int id; |
| 231 | |
| 232 | Worker(Socket s, int id) { |
| 233 | this.s = s; |
| 234 | this.id = id; |
| 235 | } |
| 236 | |
| 237 | static int requests = 0; |
| 238 | static Object rlock = new Object(); |
| 239 | |
| 240 | public static int getRequests () { |
| 241 | synchronized (rlock) { |
| 242 | return requests; |
| 243 | } |
| 244 | } |
| 245 | public static void incRequests () { |
| 246 | synchronized (rlock) { |
| 247 | requests++; |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | int readUntil (InputStream in, char[] seq) throws IOException { |
| 252 | int i=0, count=0; |
| 253 | while (true) { |
| 254 | int c = in.read(); |
| 255 | if (c == -1) |
| 256 | return -1; |
| 257 | count++; |
| 258 | if (c == seq[i]) { |
| 259 | i++; |
| 260 | if (i == seq.length) |
| 261 | return count; |
| 262 | continue; |
| 263 | } else { |
| 264 | i = 0; |
| 265 | } |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | public void run() { |
| 270 | try { |
| 271 | int max = 400; |
| 272 | byte b[] = new byte[1000]; |
| 273 | InputStream in = new BufferedInputStream (s.getInputStream()); |
| 274 | // response to client |
| 275 | PrintStream out = new PrintStream( |
| 276 | new BufferedOutputStream( |
| 277 | s.getOutputStream() )); |
| 278 | |
| 279 | for (;;) { |
| 280 | |
| 281 | // read entire request from client |
| 282 | int n=0; |
| 283 | |
| 284 | n = readUntil (in, new char[] {'\r','\n', '\r','\n'}); |
| 285 | |
| 286 | if (n <= 0) { |
| 287 | MultiThreadTest.debug("worker: " + id + ": Shutdown"); |
| 288 | s.close(); |
| 289 | return; |
| 290 | } |
| 291 | |
| 292 | MultiThreadTest.debug("worker " + id + |
| 293 | ": Read request from client " + |
| 294 | "(" + n + " bytes)."); |
| 295 | |
| 296 | incRequests(); |
| 297 | out.print("HTTP/1.1 200 OK\r\n"); |
| 298 | out.print("Transfer-Encoding: chunked\r\n"); |
| 299 | out.print("Content-Type: text/html\r\n"); |
| 300 | out.print("Connection: Keep-Alive\r\n"); |
| 301 | out.print ("Keep-Alive: timeout=15, max="+max+"\r\n"); |
| 302 | out.print("\r\n"); |
| 303 | out.print ("6\r\nHello \r\n"); |
| 304 | out.print ("5\r\nWorld\r\n"); |
| 305 | out.print ("0\r\n\r\n"); |
| 306 | out.flush(); |
| 307 | |
| 308 | if (--max == 0) { |
| 309 | s.close(); |
| 310 | return; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | } catch (Exception e) { |
| 315 | e.printStackTrace(); |
| 316 | } finally { |
| 317 | try { |
| 318 | s.close(); |
| 319 | } catch (Exception e) { } |
| 320 | } |
| 321 | } |
| 322 | } |