1/*
2 * Copyright (c) 2012, 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 7128648
27 * @modules jdk.httpserver
28 * @summary HttpURLConnection.getHeaderFields should return an unmodifiable Map
29 */
30
31import java.io.IOException;
32import java.net.InetSocketAddress;
33import java.net.URI;
34import java.net.HttpURLConnection;
35import java.util.Collection;
36import java.util.ArrayList;
37import java.util.List;
38import java.util.Map;
39import com.sun.net.httpserver.HttpExchange;
40import com.sun.net.httpserver.HttpHandler;
41import com.sun.net.httpserver.HttpServer;
42import com.sun.net.httpserver.Headers;
43import static java.net.Proxy.NO_PROXY;
44
45public class UnmodifiableMaps {
46
47    void test(String[] args) throws Exception {
48        HttpServer server = startHttpServer();
49        try {
50            InetSocketAddress address = server.getAddress();
51            URI uri = new URI("http://localhost:" + address.getPort() + "/foo");
52            doClient(uri);
53        } finally {
54            server.stop(0);
55        }
56    }
57
58    void doClient(URI uri) throws Exception {
59        HttpURLConnection uc = (HttpURLConnection) uri.toURL().openConnection(NO_PROXY);
60
61        // Test1: getRequestProperties is unmodifiable
62        System.out.println("Check getRequestProperties");
63        checkUnmodifiable(uc.getRequestProperties());
64        uc.addRequestProperty("X", "V");
65        uc.addRequestProperty("X1", "V1");
66        checkUnmodifiable(uc.getRequestProperties());
67
68        int resp = uc.getResponseCode();
69        check(resp == 200,
70              "Unexpected response code. Expected 200, got " + resp);
71
72        // Test2: getHeaderFields is unmodifiable
73        System.out.println("Check getHeaderFields");
74        checkUnmodifiable(uc.getHeaderFields());
75        // If the implementation does caching, check again.
76        checkUnmodifiable(uc.getHeaderFields());
77    }
78
79    // HTTP Server
80    HttpServer startHttpServer() throws IOException {
81        HttpServer httpServer = HttpServer.create(new InetSocketAddress(0), 0);
82        httpServer.createContext("/foo", new SimpleHandler());
83        httpServer.start();
84        return httpServer;
85    }
86
87    class SimpleHandler implements HttpHandler {
88        @Override
89        public void handle(HttpExchange t) throws IOException {
90            Headers respHeaders = t.getResponseHeaders();
91            // ensure some response headers, over the usual ones
92            respHeaders.add("RespHdr1", "Value1");
93            respHeaders.add("RespHdr2", "Value2");
94            respHeaders.add("RespHdr3", "Value3");
95            t.sendResponseHeaders(200, -1);
96            t.close();
97        }
98    }
99
100    void checkUnmodifiable(Map<String,List<String>> map) {
101        checkUnmodifiableMap(map);
102
103        // Now check the individual values
104        Collection<List<String>> values = map.values();
105        for (List<String> value : values) {
106            checkUnmodifiableList(value);
107        }
108    }
109
110    void checkUnmodifiableMap(final Map<String,List<String>> map) {
111        expectThrow( new Runnable() {
112            public void run() { map.clear(); }});
113        expectThrow( new Runnable() {
114            public void run() { map.put("X", new ArrayList<String>()); }});
115        expectThrow( new Runnable() {
116            public void run() { map.remove("X"); }});
117    }
118
119    void checkUnmodifiableList(final List<String> list) {
120        expectThrow( new Runnable() {
121            public void run() { list.clear(); }});
122        expectThrow( new Runnable() {
123            public void run() { list.add("X"); }});
124        expectThrow( new Runnable() {
125            public void run() { list.remove("X"); }});
126    }
127
128    void expectThrow(Runnable r) {
129        try { r.run(); fail("Excepted UOE to be thrown."); Thread.dumpStack(); }
130        catch (UnsupportedOperationException e) { pass(); }
131    }
132
133    volatile int passed = 0, failed = 0;
134    void pass() {passed++;}
135    void fail() {failed++;}
136    void fail(String msg) {System.err.println(msg); fail();}
137    void unexpected(Throwable t) {failed++; t.printStackTrace();}
138    void check(boolean cond, String failMessage) {if (cond) pass(); else fail(failMessage);}
139    public static void main(String[] args) throws Throwable {
140        Class<?> k = new Object(){}.getClass().getEnclosingClass();
141        try {k.getMethod("instanceMain",String[].class)
142                .invoke( k.newInstance(), (Object) args);}
143        catch (Throwable e) {throw e.getCause();}}
144    public void instanceMain(String[] args) throws Throwable {
145        try {test(args);} catch (Throwable t) {unexpected(t);}
146        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
147        if (failed > 0) throw new AssertionError("Some tests failed");}
148}
149
150