J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 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 4507412 |
| 27 | * @bug 4506998 |
| 28 | * @summary Check that a 304 "Not-Modified" response from a server |
| 29 | * doesn't cause http client to close a keep-alive |
| 30 | * connection. |
| 31 | * Check that a content-length of 0 results in an |
| 32 | * empty input stream. |
| 33 | */ |
| 34 | import java.net.*; |
| 35 | import java.io.*; |
| 36 | |
| 37 | public class ZeroContentLength { |
| 38 | |
| 39 | /* |
| 40 | * Is debugging enabled - start with -d to enable. |
| 41 | */ |
| 42 | static boolean debug = false; |
| 43 | |
| 44 | static void debug(String msg) { |
| 45 | if (debug) |
| 46 | System.out.println(msg); |
| 47 | } |
| 48 | |
| 49 | /* |
| 50 | * The response string and content-length that |
| 51 | * the server should return; |
| 52 | */ |
| 53 | static String response; |
| 54 | static int contentLength; |
| 55 | |
| 56 | static synchronized void setResponse(String rsp, int cl) { |
| 57 | response = rsp; |
| 58 | contentLength = cl; |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Worker thread to service single connection - can service |
| 63 | * multiple http requests on same connection. |
| 64 | */ |
| 65 | class Worker extends Thread { |
| 66 | Socket s; |
| 67 | int id; |
| 68 | |
| 69 | Worker(Socket s, int id) { |
| 70 | this.s = s; |
| 71 | this.id = id; |
| 72 | } |
| 73 | |
| 74 | public void run() { |
| 75 | try { |
| 76 | |
| 77 | s.setSoTimeout(2000); |
| 78 | int max = 100; |
| 79 | |
| 80 | for (;;) { |
| 81 | |
| 82 | // read entire request from client |
| 83 | byte b[] = new byte[100]; |
| 84 | InputStream in = s.getInputStream(); |
| 85 | int n, total=0; |
| 86 | |
| 87 | try { |
| 88 | do { |
| 89 | n = in.read(b); |
| 90 | if (n > 0) total += n; |
| 91 | } while (n > 0); |
| 92 | } catch (SocketTimeoutException e) { } |
| 93 | |
| 94 | debug("worker " + id + |
| 95 | ": Read request from client " + |
| 96 | "(" + total + " bytes)."); |
| 97 | |
| 98 | if (total == 0) { |
| 99 | debug("worker: " + id + ": Shutdown"); |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | // response to client |
| 104 | PrintStream out = new PrintStream( |
| 105 | new BufferedOutputStream( |
| 106 | s.getOutputStream() )); |
| 107 | |
| 108 | out.print("HTTP/1.1 " + response + "\r\n"); |
| 109 | if (contentLength >= 0) { |
| 110 | out.print("Content-Length: " + contentLength + |
| 111 | "\r\n"); |
| 112 | } |
| 113 | out.print("\r\n"); |
| 114 | for (int i=0; i<contentLength; i++) { |
| 115 | out.write( (byte)'.' ); |
| 116 | } |
| 117 | out.flush(); |
| 118 | |
| 119 | debug("worked " + id + |
| 120 | ": Sent response to client, length: " + contentLength); |
| 121 | |
| 122 | if (--max == 0) { |
| 123 | s.close(); |
| 124 | return; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | } catch (Exception e) { |
| 129 | e.printStackTrace(); |
| 130 | } finally { |
| 131 | try { |
| 132 | s.close(); |
| 133 | } catch (Exception e) { } |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /* |
| 139 | * Server thread to accept connection and create worker threads |
| 140 | * to service each connection. |
| 141 | */ |
| 142 | class Server extends Thread { |
| 143 | ServerSocket ss; |
| 144 | int connectionCount; |
| 145 | boolean shutdown = false; |
| 146 | |
| 147 | Server(ServerSocket ss) { |
| 148 | this.ss = ss; |
| 149 | } |
| 150 | |
| 151 | public synchronized int connectionCount() { |
| 152 | return connectionCount; |
| 153 | } |
| 154 | |
| 155 | public synchronized void shutdown() { |
| 156 | shutdown = true; |
| 157 | } |
| 158 | |
| 159 | public void run() { |
| 160 | try { |
| 161 | ss.setSoTimeout(2000); |
| 162 | |
| 163 | for (;;) { |
| 164 | Socket s; |
| 165 | try { |
| 166 | debug("server: Waiting for connections"); |
| 167 | s = ss.accept(); |
| 168 | } catch (SocketTimeoutException te) { |
| 169 | synchronized (this) { |
| 170 | if (shutdown) { |
| 171 | debug("server: Shuting down."); |
| 172 | return; |
| 173 | } |
| 174 | } |
| 175 | continue; |
| 176 | } |
| 177 | |
| 178 | int id; |
| 179 | synchronized (this) { |
| 180 | id = connectionCount++; |
| 181 | } |
| 182 | |
| 183 | Worker w = new Worker(s, id); |
| 184 | w.start(); |
| 185 | debug("server: Started worker " + id); |
| 186 | } |
| 187 | |
| 188 | } catch (Exception e) { |
| 189 | e.printStackTrace(); |
| 190 | } finally { |
| 191 | try { |
| 192 | ss.close(); |
| 193 | } catch (Exception e) { } |
| 194 | } |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /* |
| 199 | * Make a single http request and return the content length |
| 200 | * received. Also do sanity check to ensure that the |
| 201 | * content-length header matches the total received on |
| 202 | * the input stream. |
| 203 | */ |
| 204 | int doRequest(String uri) throws Exception { |
| 205 | URL url = new URL(uri); |
| 206 | HttpURLConnection http = (HttpURLConnection)url.openConnection(); |
| 207 | |
| 208 | int cl = http.getContentLength(); |
| 209 | |
| 210 | InputStream in = http.getInputStream(); |
| 211 | byte b[] = new byte[100]; |
| 212 | int total = 0; |
| 213 | int n; |
| 214 | do { |
| 215 | n = in.read(b); |
| 216 | if (n > 0) total += n; |
| 217 | } while (n > 0); |
| 218 | in.close(); |
| 219 | |
| 220 | if (cl >= 0 && total != cl) { |
| 221 | System.err.println("content-length header indicated: " + cl); |
| 222 | System.err.println("Actual received: " + total); |
| 223 | throw new Exception("Content-length didn't match actual received"); |
| 224 | } |
| 225 | |
| 226 | return total; |
| 227 | } |
| 228 | |
| 229 | |
| 230 | /* |
| 231 | * Send http requests to "server" and check that they all |
| 232 | * use the same network connection and that the content |
| 233 | * length corresponds to the content length expected. |
| 234 | * stream. |
| 235 | */ |
| 236 | ZeroContentLength() throws Exception { |
| 237 | |
| 238 | /* start the server */ |
| 239 | ServerSocket ss = new ServerSocket(0); |
| 240 | Server svr = new Server(ss); |
| 241 | svr.start(); |
| 242 | |
| 243 | String uri = "http://localhost:" + |
| 244 | Integer.toString(ss.getLocalPort()) + |
| 245 | "/foo.html"; |
| 246 | |
| 247 | int expectedTotal = 0; |
| 248 | int actualTotal = 0; |
| 249 | |
| 250 | System.out.println("**********************************"); |
| 251 | System.out.println("200 OK, content-length:1024 ..."); |
| 252 | setResponse("200 OK", 1024); |
| 253 | for (int i=0; i<5; i++) { |
| 254 | actualTotal += doRequest(uri); |
| 255 | expectedTotal += 1024; |
| 256 | } |
| 257 | |
| 258 | System.out.println("**********************************"); |
| 259 | System.out.println("200 OK, content-length:0 ..."); |
| 260 | setResponse("200 OK", 0); |
| 261 | for (int i=0; i<5; i++) { |
| 262 | actualTotal += doRequest(uri); |
| 263 | } |
| 264 | |
| 265 | System.out.println("**********************************"); |
| 266 | System.out.println("304 Not-Modified, (no content-length) ..."); |
| 267 | setResponse("304 Not-Modifed", -1); |
| 268 | for (int i=0; i<5; i++) { |
| 269 | actualTotal += doRequest(uri); |
| 270 | } |
| 271 | |
| 272 | System.out.println("**********************************"); |
| 273 | System.out.println("204 No-Content, (no content-length) ..."); |
| 274 | setResponse("204 No-Content", -1); |
| 275 | for (int i=0; i<5; i++) { |
| 276 | actualTotal += doRequest(uri); |
| 277 | } |
| 278 | |
| 279 | // shutdown server - we're done. |
| 280 | svr.shutdown(); |
| 281 | |
| 282 | System.out.println("**********************************"); |
| 283 | |
| 284 | if (actualTotal == expectedTotal) { |
| 285 | System.out.println("Passed: Actual total equal to expected total"); |
| 286 | } else { |
| 287 | throw new Exception("Actual total != Expected total!!!"); |
| 288 | } |
| 289 | |
| 290 | int cnt = svr.connectionCount(); |
| 291 | if (cnt == 1) { |
| 292 | System.out.println("Passed: Only 1 connection established"); |
| 293 | } else { |
| 294 | throw new Exception("Test failed: Number of connections " + |
| 295 | "established: " + cnt + " - see log for details."); |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | public static void main(String args[]) throws Exception { |
| 300 | |
| 301 | if (args.length > 0 && args[0].equals("-d")) { |
| 302 | debug = true; |
| 303 | } |
| 304 | |
| 305 | new ZeroContentLength(); |
| 306 | } |
| 307 | |
| 308 | } |