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
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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 
33 import com.sun.net.httpserver.HttpContext;
34 import com.sun.net.httpserver.HttpExchange;
35 import com.sun.net.httpserver.HttpHandler;
36 import java.io.IOException;
37 import java.io.OutputStream;
38 import java.net.HttpURLConnection;
39 import java.net.InetSocketAddress;
40 import java.net.Proxy;
41 import java.net.SocketException;
42 import java.net.URL;
43 import java.util.concurrent.Executors;
44 import java.util.concurrent.ExecutorService;
45 
46 public class RetryPost
47 {
48     static boolean shouldRetry = true;
49 
50     com.sun.net.httpserver.HttpServer httpServer;
51     MyHandler httpHandler;
52     ExecutorService executorService;
53 
main(String[] args)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 
RetryPost()61     public RetryPost() {
62         try {
63             startHttpServer(shouldRetry);
64             doClient();
65         } catch (IOException ioe) {
66             System.err.println(ioe);
67         }
68     }
69 
doClient()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      */
startHttpServer(boolean shouldRetry)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 
MyHandler(boolean shouldRetry)116         public MyHandler(boolean shouldRetry) {
117             this.shouldRetry = shouldRetry;
118         }
119 
handle(HttpExchange t)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 
getCallCount()134         public int getCallCount() {
135             return callCount;
136         }
137     }
138 
139 }
140