| /* |
| * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 5045306 6356004 6993490 |
| * @modules java.base/sun.net.www |
| * java.management |
| * @library ../../httptest/ |
| * @build HttpCallback TestHttpServer HttpTransaction |
| * @run main/othervm B5045306 |
| * @summary Http keep-alive implementation is not efficient |
| */ |
| |
| import java.net.*; |
| import java.io.*; |
| import java.lang.management.*; |
| |
| /* Part 1: |
| * The http client makes a connection to a URL whos content contains a lot of |
| * data, more than can fit in the socket buffer. The client only reads |
| * 1 byte of the data from the InputStream leaving behind more data than can |
| * fit in the socket buffer. The client then makes a second call to the http |
| * server. If the connection port used by the client is the same as for the |
| * first call then that means that the connection is being reused. |
| * |
| * Part 2: |
| * Test buggy webserver that sends less data than it specifies in its |
| * Content-length header. |
| */ |
| |
| public class B5045306 |
| { |
| static SimpleHttpTransaction httpTrans; |
| static TestHttpServer server; |
| |
| public static void main(String[] args) throws Exception { |
| startHttpServer(); |
| clientHttpCalls(); |
| } |
| |
| public static void startHttpServer() { |
| try { |
| httpTrans = new SimpleHttpTransaction(); |
| server = new TestHttpServer(httpTrans, 1, 10, 0); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| public static void clientHttpCalls() { |
| try { |
| System.out.println("http server listen on: " + server.getLocalPort()); |
| String baseURLStr = "http://" + InetAddress.getLocalHost().getHostAddress() + ":" + |
| server.getLocalPort() + "/"; |
| |
| URL bigDataURL = new URL (baseURLStr + "firstCall"); |
| URL smallDataURL = new URL (baseURLStr + "secondCall"); |
| |
| HttpURLConnection uc = (HttpURLConnection)bigDataURL.openConnection(); |
| |
| //Only read 1 byte of response data and close the stream |
| InputStream is = uc.getInputStream(); |
| byte[] ba = new byte[1]; |
| is.read(ba); |
| is.close(); |
| |
| // Allow the KeepAliveStreamCleaner thread to read the data left behind and cache the connection. |
| try { Thread.sleep(2000); } catch (Exception e) {} |
| |
| uc = (HttpURLConnection)smallDataURL.openConnection(); |
| uc.getResponseCode(); |
| |
| if (SimpleHttpTransaction.failed) |
| throw new RuntimeException("Failed: Initial Keep Alive Connection is not being reused"); |
| |
| // Part 2 |
| URL part2Url = new URL (baseURLStr + "part2"); |
| uc = (HttpURLConnection)part2Url.openConnection(); |
| is = uc.getInputStream(); |
| is.close(); |
| |
| // Allow the KeepAliveStreamCleaner thread to try and read the data left behind and cache the connection. |
| try { Thread.sleep(2000); } catch (Exception e) {} |
| |
| ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); |
| if (threadMXBean.isThreadCpuTimeSupported()) { |
| long[] threads = threadMXBean.getAllThreadIds(); |
| ThreadInfo[] threadInfo = threadMXBean.getThreadInfo(threads); |
| for (int i=0; i<threadInfo.length; i++) { |
| if (threadInfo[i].getThreadName().equals("Keep-Alive-SocketCleaner")) { |
| System.out.println("Found Keep-Alive-SocketCleaner thread"); |
| long threadID = threadInfo[i].getThreadId(); |
| long before = threadMXBean.getThreadCpuTime(threadID); |
| try { Thread.sleep(2000); } catch (Exception e) {} |
| long after = threadMXBean.getThreadCpuTime(threadID); |
| |
| if (before ==-1 || after == -1) |
| break; // thread has died, OK |
| |
| // if Keep-Alive-SocketCleaner consumes more than 50% of cpu then we |
| // can assume a recursive loop. |
| long total = after - before; |
| if (total >= 1000000000) // 1 second, or 1 billion nanoseconds |
| throw new RuntimeException("Failed: possible recursive loop in Keep-Alive-SocketCleaner"); |
| } |
| } |
| } |
| |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } finally { |
| server.terminate(); |
| } |
| } |
| } |
| |
| class SimpleHttpTransaction implements HttpCallback |
| { |
| static boolean failed = false; |
| |
| // Need to have enough data here that is too large for the socket buffer to hold. |
| // Also http.KeepAlive.remainingData must be greater than this value, default is 256K. |
| static final int RESPONSE_DATA_LENGTH = 128 * 1024; |
| |
| int port1; |
| |
| public void request(HttpTransaction trans) { |
| try { |
| String path = trans.getRequestURI().getPath(); |
| if (path.equals("/firstCall")) { |
| port1 = trans.channel().socket().getPort(); |
| System.out.println("First connection on client port = " + port1); |
| |
| byte[] responseBody = new byte[RESPONSE_DATA_LENGTH]; |
| for (int i=0; i<responseBody.length; i++) |
| responseBody[i] = 0x41; |
| trans.setResponseEntityBody (responseBody, responseBody.length); |
| trans.sendResponse(200, "OK"); |
| } else if (path.equals("/secondCall")) { |
| int port2 = trans.channel().socket().getPort(); |
| System.out.println("Second connection on client port = " + port2); |
| |
| if (port1 != port2) |
| failed = true; |
| |
| trans.setResponseHeader ("Content-length", Integer.toString(0)); |
| |
| /* Force the server to not respond for more that the timeout |
| * set by the keepalive cleaner (5000 millis). This ensures the |
| * timeout is correctly resets the default read timeout, |
| * infinity. See 6993490. */ |
| System.out.println("server sleeping..."); |
| try {Thread.sleep(6000); } catch (InterruptedException e) {} |
| |
| trans.sendResponse(200, "OK"); |
| } else if(path.equals("/part2")) { |
| System.out.println("Call to /part2"); |
| byte[] responseBody = new byte[RESPONSE_DATA_LENGTH]; |
| for (int i=0; i<responseBody.length; i++) |
| responseBody[i] = 0x41; |
| trans.setResponseEntityBody (responseBody, responseBody.length); |
| |
| // override the Content-length header to be greater than the actual response body |
| trans.setResponseHeader("Content-length", Integer.toString(responseBody.length+1)); |
| trans.sendResponse(200, "OK"); |
| |
| // now close the socket |
| trans.channel().socket().close(); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |