RetryPost.java revision 9218:0c3ce4f14c1d 
1/*
2 * Copyright (c) 2006, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.net.*;
25import java.util.*;
26import java.io.*;
27import com.sun.net.httpserver.*;
28import java.util.concurrent.Executors;
29import java.util.concurrent.ExecutorService;
30
31public class RetryPost
32{
33    static boolean shouldRetry = true;
34
35    com.sun.net.httpserver.HttpServer httpServer;
36    MyHandler httpHandler;
37    ExecutorService executorService;
38
39    public static void main(String[] args) {
40        if (args.length == 1 && args[0].equals("noRetry"))
41            shouldRetry = false;
42
43        new RetryPost();
44    }
45
46    public RetryPost() {
47        try {
48            startHttpServer(shouldRetry);
49            doClient();
50        } catch (IOException ioe) {
51            System.err.println(ioe);
52        }
53    }
54
55    void doClient() {
56        try {
57            InetSocketAddress address = httpServer.getAddress();
58            URL url = new URL("http://localhost:" + address.getPort() + "/test/");
59            HttpURLConnection uc = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
60            uc.setDoOutput(true);
61            uc.setRequestMethod("POST");
62            uc.getResponseCode();
63
64            // if we reach here then we have failed
65            throw new RuntimeException("Failed: POST request being retried");
66
67        } catch (SocketException se) {
68            // this is what we expect to happen and is OK.
69            if (shouldRetry && httpHandler.getCallCount() != 2)
70                throw new RuntimeException("Failed: Handler should have been called twice. " +
71                                           "It was called "+ httpHandler.getCallCount() + " times");
72            else if (!shouldRetry && httpHandler.getCallCount() != 1)
73                throw new RuntimeException("Failed: Handler should have only been called once" +
74                                           "It was called "+ httpHandler.getCallCount() + " times");
75        } catch (IOException e) {
76            e.printStackTrace();
77        } finally {
78            httpServer.stop(1);
79            executorService.shutdown();
80        }
81    }
82
83    /**
84     * Http Server
85     */
86    public void startHttpServer(boolean shouldRetry) throws IOException {
87        httpServer = com.sun.net.httpserver.HttpServer.create(new InetSocketAddress(0), 0);
88        httpHandler = new MyHandler(shouldRetry);
89
90        HttpContext ctx = httpServer.createContext("/test/", httpHandler);
91
92        executorService = Executors.newCachedThreadPool();
93        httpServer.setExecutor(executorService);
94        httpServer.start();
95    }
96
97    class MyHandler implements HttpHandler {
98        int callCount = 0;
99        boolean shouldRetry;
100
101        public MyHandler(boolean shouldRetry) {
102            this.shouldRetry = shouldRetry;
103        }
104
105        public void handle(HttpExchange t) throws IOException {
106            callCount++;
107
108            if (callCount > 1 && !shouldRetry) {
109                // if this bug has been fixed then this method will not be called twice
110                // when -Dhttp.retryPost=false
111                t.sendResponseHeaders(400, -1);  // indicate failure by returning 400
112            } else {
113                // simply close out the stream without sending any data.
114                OutputStream os = t.getResponseBody();
115                os.close();
116            }
117        }
118
119        public int getCallCount() {
120            return callCount;
121        }
122    }
123
124}
125