author | ohair |
Tue, 28 Dec 2010 15:53:50 -0800 | |
changeset 7668 | d4a77089c587 |
parent 6115 | 7c523cf2bc8a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002, 2010, 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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/* |
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* @test |
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* @bug 4636628 |
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* @summary HttpURLConnection duplicates HTTP GET requests when used with multiple threads |
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*/ |
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/* |
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* This tests keep-alive behavior using chunkedinputstreams |
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* It checks that keep-alive connections are used and also |
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* that requests are not being repeated (due to errors) |
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* |
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* It also checks that the keepalive connections are closed eventually |
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* because the test will not terminate if the connections |
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* are not closed by the keep-alive timer. |
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*/ |
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import java.net.*; |
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import java.io.*; |
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public class MultiThreadTest extends Thread { |
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/* |
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* Is debugging enabled - start with -d to enable. |
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*/ |
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static boolean debug = false; |
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static Object threadlock = new Object (); |
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static int threadCounter = 0; |
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static Object getLock() { return threadlock; } |
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static void debug(String msg) { |
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if (debug) |
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System.out.println(msg); |
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} |
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static int reqnum = 0; |
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void doRequest(String uri) throws Exception { |
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URL url = new URL(uri + "?foo="+reqnum); |
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reqnum ++; |
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HttpURLConnection http = (HttpURLConnection)url.openConnection(); |
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InputStream in = http.getInputStream(); |
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byte b[] = new byte[100]; |
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int total = 0; |
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int n; |
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do { |
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n = in.read(b); |
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if (n > 0) total += n; |
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} while (n > 0); |
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debug ("client: read " + total + " bytes"); |
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in.close(); |
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http.disconnect(); |
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} |
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String uri; |
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byte[] b; |
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int requests; |
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MultiThreadTest(int port, int requests) throws Exception { |
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uri = "http://localhost:" + |
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port + "/foo.html"; |
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b = new byte [256]; |
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this.requests = requests; |
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synchronized (threadlock) { |
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threadCounter ++; |
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} |
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} |
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public void run () { |
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try { |
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for (int i=0; i<requests; i++) { |
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doRequest (uri); |
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} |
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} catch (Exception e) { |
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throw new RuntimeException (e.getMessage()); |
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} finally { |
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synchronized (threadlock) { |
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threadCounter --; |
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if (threadCounter == 0) { |
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threadlock.notifyAll(); |
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} |
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} |
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} |
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} |
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static int threads=5; |
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public static void main(String args[]) throws Exception { |
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int x = 0, arg_len = args.length; |
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int requests = 20; |
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if (arg_len > 0 && args[0].equals("-d")) { |
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debug = true; |
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x = 1; |
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arg_len --; |
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} |
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if (arg_len > 0) { |
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threads = Integer.parseInt (args[x]); |
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requests = Integer.parseInt (args[x+1]); |
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} |
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/* start the server */ |
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ServerSocket ss = new ServerSocket(0); |
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Server svr = new Server(ss); |
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svr.start(); |
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Object lock = MultiThreadTest.getLock(); |
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synchronized (lock) { |
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for (int i=0; i<threads; i++) { |
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MultiThreadTest t = new MultiThreadTest(ss.getLocalPort(), requests); |
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t.start (); |
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} |
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try { |
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lock.wait(); |
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} catch (InterruptedException e) {} |
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} |
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// shutdown server - we're done. |
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svr.shutdown(); |
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int cnt = svr.connectionCount(); |
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MultiThreadTest.debug("Connections = " + cnt); |
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int reqs = Worker.getRequests (); |
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MultiThreadTest.debug("Requests = " + reqs); |
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System.out.println ("Connection count = " + cnt + " Request count = " + reqs); |
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if (cnt > threads) { // could be less |
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throw new RuntimeException ("Expected "+threads + " connections: used " +cnt); |
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} |
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if (reqs != threads*requests) { |
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throw new RuntimeException ("Expected "+ threads*requests+ " requests: got " +reqs); |
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} |
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} |
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} |
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/* |
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* Server thread to accept connection and create worker threads |
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* to service each connection. |
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*/ |
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class Server extends Thread { |
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ServerSocket ss; |
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int connectionCount; |
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boolean shutdown = false; |
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Server(ServerSocket ss) { |
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this.ss = ss; |
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} |
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public synchronized int connectionCount() { |
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return connectionCount; |
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} |
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public synchronized void shutdown() { |
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shutdown = true; |
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} |
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public void run() { |
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try { |
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ss.setSoTimeout(2000); |
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for (;;) { |
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Socket s; |
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try { |
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MultiThreadTest.debug("server: calling accept."); |
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s = ss.accept(); |
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MultiThreadTest.debug("server: return accept."); |
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} catch (SocketTimeoutException te) { |
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MultiThreadTest.debug("server: STE"); |
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synchronized (this) { |
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if (shutdown) { |
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MultiThreadTest.debug("server: Shuting down."); |
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return; |
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} |
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} |
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continue; |
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} |
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int id; |
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synchronized (this) { |
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id = connectionCount++; |
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} |
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Worker w = new Worker(s, id); |
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w.start(); |
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MultiThreadTest.debug("server: Started worker " + id); |
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} |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} finally { |
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try { |
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ss.close(); |
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} catch (Exception e) { } |
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} |
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} |
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} |
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/* |
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* Worker thread to service single connection - can service |
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* multiple http requests on same connection. |
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*/ |
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class Worker extends Thread { |
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Socket s; |
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int id; |
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Worker(Socket s, int id) { |
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this.s = s; |
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this.id = id; |
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} |
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static int requests = 0; |
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static Object rlock = new Object(); |
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public static int getRequests () { |
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synchronized (rlock) { |
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return requests; |
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} |
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} |
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public static void incRequests () { |
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synchronized (rlock) { |
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requests++; |
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} |
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} |
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int readUntil (InputStream in, char[] seq) throws IOException { |
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int i=0, count=0; |
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while (true) { |
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int c = in.read(); |
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if (c == -1) |
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return -1; |
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count++; |
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if (c == seq[i]) { |
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i++; |
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if (i == seq.length) |
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return count; |
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continue; |
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} else { |
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i = 0; |
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} |
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} |
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} |
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public void run() { |
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try { |
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int max = 400; |
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byte b[] = new byte[1000]; |
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InputStream in = new BufferedInputStream (s.getInputStream()); |
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// response to client |
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PrintStream out = new PrintStream( |
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new BufferedOutputStream( |
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s.getOutputStream() )); |
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for (;;) { |
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// read entire request from client |
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int n=0; |
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n = readUntil (in, new char[] {'\r','\n', '\r','\n'}); |
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if (n <= 0) { |
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MultiThreadTest.debug("worker: " + id + ": Shutdown"); |
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s.close(); |
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return; |
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} |
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MultiThreadTest.debug("worker " + id + |
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": Read request from client " + |
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"(" + n + " bytes)."); |
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incRequests(); |
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out.print("HTTP/1.1 200 OK\r\n"); |
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out.print("Transfer-Encoding: chunked\r\n"); |
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out.print("Content-Type: text/html\r\n"); |
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out.print("Connection: Keep-Alive\r\n"); |
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out.print ("Keep-Alive: timeout=15, max="+max+"\r\n"); |
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out.print("\r\n"); |
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out.print ("6\r\nHello \r\n"); |
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out.print ("5\r\nWorld\r\n"); |
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out.print ("0\r\n\r\n"); |
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out.flush(); |
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if (--max == 0) { |
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s.close(); |
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return; |
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} |
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} |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} finally { |
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try { |
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s.close(); |
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} catch (Exception e) { } |
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} |
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} |
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} |