1/*
2 * Copyright (c) 2006, 2016, 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
24/*
25 * @test
26 * @bug 6427251 6382788
27 * @modules jdk.httpserver
28 * @run main RetryPost
29 * @run main/othervm -Dsun.net.http.retryPost=false RetryPost noRetry
30 * @summary HttpURLConnection automatically retries non-idempotent method POST
31 */
32
33import com.sun.net.httpserver.HttpContext;
34import com.sun.net.httpserver.HttpExchange;
35import com.sun.net.httpserver.HttpHandler;
36import java.io.IOException;
37import java.io.OutputStream;
38import java.net.HttpURLConnection;
39import java.net.InetSocketAddress;
40import java.net.Proxy;
41import java.net.SocketException;
42import java.net.URL;
43import java.util.concurrent.Executors;
44import java.util.concurrent.ExecutorService;
45
46public class RetryPost
47{
48    static boolean shouldRetry = true;
49
50    com.sun.net.httpserver.HttpServer httpServer;
51    MyHandler httpHandler;
52    ExecutorService executorService;
53
54    public static void main(String[] args) {
55        if (args.length == 1 && args[0].equals("noRetry"))
56            shouldRetry = false;
57
58        new RetryPost();
59    }
60
61    public RetryPost() {
62        try {
63            startHttpServer(shouldRetry);
64            doClient();
65        } catch (IOException ioe) {
66            System.err.println(ioe);
67        }
68    }
69
70    void doClient() {
71        try {
72            InetSocketAddress address = httpServer.getAddress();
73            URL url = new URL("http://localhost:" + address.getPort() + "/test/");
74            HttpURLConnection uc = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
75            uc.setDoOutput(true);
76            uc.setRequestMethod("POST");
77            uc.getResponseCode();
78
79            // if we reach here then we have failed
80            throw new RuntimeException("Failed: POST request being retried");
81
82        } catch (SocketException se) {
83            // this is what we expect to happen and is OK.
84            if (shouldRetry && httpHandler.getCallCount() != 2)
85                throw new RuntimeException("Failed: Handler should have been called twice. " +
86                                           "It was called "+ httpHandler.getCallCount() + " times");
87            else if (!shouldRetry && httpHandler.getCallCount() != 1)
88                throw new RuntimeException("Failed: Handler should have only been called once" +
89                                           "It was called "+ httpHandler.getCallCount() + " times");
90        } catch (IOException e) {
91            e.printStackTrace();
92        } finally {
93            httpServer.stop(1);
94            executorService.shutdown();
95        }
96    }
97
98    /**
99     * Http Server
100     */
101    public void startHttpServer(boolean shouldRetry) throws IOException {
102        httpServer = com.sun.net.httpserver.HttpServer.create(new InetSocketAddress(0), 0);
103        httpHandler = new MyHandler(shouldRetry);
104
105        HttpContext ctx = httpServer.createContext("/test/", httpHandler);
106
107        executorService = Executors.newCachedThreadPool();
108        httpServer.setExecutor(executorService);
109        httpServer.start();
110    }
111
112    class MyHandler implements HttpHandler {
113        int callCount = 0;
114        boolean shouldRetry;
115
116        public MyHandler(boolean shouldRetry) {
117            this.shouldRetry = shouldRetry;
118        }
119
120        public void handle(HttpExchange t) throws IOException {
121            callCount++;
122
123            if (callCount > 1 && !shouldRetry) {
124                // if this bug has been fixed then this method will not be called twice
125                // when -Dhttp.retryPost=false
126                t.sendResponseHeaders(400, -1);  // indicate failure by returning 400
127            } else {
128                // simply close out the stream without sending any data.
129                OutputStream os = t.getResponseBody();
130                os.close();
131            }
132        }
133
134        public int getCallCount() {
135            return callCount;
136        }
137    }
138
139}
140