author | michaelm |
Fri, 30 Jul 2010 18:16:30 +0100 | |
changeset 6132 | bb7d59eb0f18 |
parent 6115 | 7c523cf2bc8a |
child 7668 | d4a77089c587 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006, 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 6361557 |
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* @run main/othervm B6361557 |
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* @summary Lightweight HTTP server quickly runs out of file descriptors on Linux |
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*/ |
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import com.sun.net.httpserver.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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import java.nio.*; |
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import java.nio.channels.*; |
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import java.net.*; |
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/** |
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* The test simply opens 1,000 separate connections |
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* and invokes one http request on each. The client does |
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* not close any sockets until after they are closed |
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* by the server. This verifies the basic ability |
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* of the server to manage a reasonable number of connections |
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*/ |
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public class B6361557 { |
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public static boolean error = false; |
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static final int NUM = 1000; |
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static class Handler implements HttpHandler { |
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int invocation = 1; |
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public void handle (HttpExchange t) |
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throws IOException |
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{ |
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InputStream is = t.getRequestBody(); |
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Headers map = t.getRequestHeaders(); |
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Headers rmap = t.getResponseHeaders(); |
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while (is.read () != -1) ; |
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is.close(); |
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t.sendResponseHeaders (200, -1); |
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t.close(); |
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} |
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} |
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final static String request = "GET /test/foo.html HTTP/1.1\r\nContent-length: 0\r\n\r\n"; |
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final static ByteBuffer requestBuf = ByteBuffer.allocate(64).put(request.getBytes()); |
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public static void main (String[] args) throws Exception { |
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Handler handler = new Handler(); |
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InetSocketAddress addr = new InetSocketAddress (0); |
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HttpServer server = HttpServer.create (addr, 0); |
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HttpContext ctx = server.createContext ("/test", handler); |
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ExecutorService executor = Executors.newCachedThreadPool(); |
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server.setExecutor (executor); |
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server.start (); |
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InetSocketAddress destaddr = new InetSocketAddress ( |
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"127.0.0.1", server.getAddress().getPort() |
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); |
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System.out.println ("destaddr " + destaddr); |
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Selector selector = Selector.open (); |
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int requests = 0; |
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int responses = 0; |
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while (true) { |
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int selres = selector.select (1); |
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Set<SelectionKey> selkeys = selector.selectedKeys(); |
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for (SelectionKey key : selkeys) { |
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if (key.isReadable()) { |
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SocketChannel chan = (SocketChannel)key.channel(); |
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ByteBuffer buf = (ByteBuffer)key.attachment(); |
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try { |
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int x = chan.read(buf); |
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if (x == -1 || responseComplete(buf)) { |
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key.attach(null); |
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chan.close(); |
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responses++; |
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} |
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} catch (IOException e) {} |
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} |
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} |
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if (requests < NUM) { |
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SocketChannel schan = SocketChannel.open(destaddr); |
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requestBuf.rewind(); |
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int c = 0; |
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while (requestBuf.remaining() > 0) { |
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c += schan.write(requestBuf); |
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} |
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schan.configureBlocking(false); |
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schan.register(selector, SelectionKey.OP_READ, ByteBuffer.allocate(100)); |
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requests++; |
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} |
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if (responses == NUM) { |
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System.out.println ("Finished clients"); |
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break; |
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} |
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} |
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server.stop (1); |
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selector.close(); |
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executor.shutdown (); |
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} |
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/* Look for CR LF CR LF */ |
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static boolean responseComplete(ByteBuffer buf) { |
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int pos = buf.position(); |
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buf.flip(); |
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byte[] lookingFor = new byte[] {'\r', '\n', '\r', '\n' }; |
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int lookingForCount = 0; |
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while (buf.hasRemaining()) { |
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byte b = buf.get(); |
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if (b == lookingFor[lookingForCount]) { |
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lookingForCount++; |
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if (lookingForCount == 4) { |
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return true; |
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} |
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} else { |
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lookingForCount = 0; |
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} |
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} |
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buf.position(pos); |
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buf.limit(buf.capacity()); |
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return false; |
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} |
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} |