1 /*
2 * Copyright (c) 2007, 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 /* @test
25 * @bug 4640544 8044773
26 * @summary Unit test for setOption/getOption/options methods
27 * @run main SocketOptionTests
28 * @run main/othervm --limit-modules=java.base SocketOptionTests
29 */
30
31 import java.nio.*;
32 import java.nio.channels.*;
33 import java.net.*;
34 import java.io.IOException;
35 import java.util.*;
36 import static java.net.StandardSocketOptions.*;
37
38 public class SocketOptionTests {
39
40 static <T> void checkOption(DatagramChannel dc,
41 SocketOption<T> name,
42 T expectedValue)
43 throws IOException
44 {
45 T value = dc.getOption(name);
46 if (!value.equals(expectedValue))
47 throw new RuntimeException("value not as expected");
48 }
49
50 public static void main(String[] args) throws IOException {
51 DatagramChannel dc = DatagramChannel.open();
52
53 // check supported options
54 Set<SocketOption<?>> options = dc.supportedOptions();
55 boolean reuseport = options.contains(SO_REUSEPORT);
56 List<? extends SocketOption<?>> expected;
57 if (reuseport) {
58 expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
59 SO_REUSEADDR, SO_REUSEPORT, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF,
60 IP_MULTICAST_TTL, IP_MULTICAST_LOOP);
61 } else {
62 expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
63 SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL,
64 IP_MULTICAST_LOOP);
65 }
66 for (SocketOption opt: expected) {
67 if (!options.contains(opt))
68 throw new RuntimeException(opt.name() + " should be supported");
69 }
70
71 // check specified defaults
72 checkOption(dc, SO_BROADCAST, false);
73 checkOption(dc, IP_MULTICAST_TTL, 1); // true on supported platforms
74 checkOption(dc, IP_MULTICAST_LOOP, true); // true on supported platforms
75
76 // allowed to change when not bound
77 dc.setOption(SO_BROADCAST, true);
78 checkOption(dc, SO_BROADCAST, true);
79 dc.setOption(SO_BROADCAST, false);
80 checkOption(dc, SO_BROADCAST, false);
81 dc.setOption(SO_SNDBUF, 128*1024); // can't check
82 dc.setOption(SO_RCVBUF, 128*1024); // can't check
83 int before, after;
84 before = dc.getOption(SO_SNDBUF);
85 after = dc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF);
86 if (after < before)
87 throw new RuntimeException("setOption caused SO_SNDBUF to decrease");
88 before = dc.getOption(SO_RCVBUF);
89 after = dc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
90 if (after < before)
91 throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
92 dc.setOption(SO_REUSEADDR, true);
93 checkOption(dc, SO_REUSEADDR, true);
94 dc.setOption(SO_REUSEADDR, false);
95 checkOption(dc, SO_REUSEADDR, false);
96 if (reuseport) {
97 dc.setOption(SO_REUSEPORT, true);
98 checkOption(dc, SO_REUSEPORT, true);
99 dc.setOption(SO_REUSEPORT, false);
100 checkOption(dc, SO_REUSEPORT, false);
101 }
102 // bind socket
103 dc.bind(new InetSocketAddress(0));
104
105 // allow to change when bound
106 dc.setOption(SO_BROADCAST, true);
107 checkOption(dc, SO_BROADCAST, true);
108 dc.setOption(SO_BROADCAST, false);
109 checkOption(dc, SO_BROADCAST, false);
110 dc.setOption(IP_TOS, 0x08); // can't check
111 dc.setOption(IP_MULTICAST_TTL, 2);
112 checkOption(dc, IP_MULTICAST_TTL, 2);
113 dc.setOption(IP_MULTICAST_LOOP, false);
114 checkOption(dc, IP_MULTICAST_LOOP, false);
115 dc.setOption(IP_MULTICAST_LOOP, true);
116 checkOption(dc, IP_MULTICAST_LOOP, true);
117
118
119 // NullPointerException
120 try {
121 dc.setOption(null, "value");
122 throw new RuntimeException("NullPointerException not thrown");
123 } catch (NullPointerException x) {
124 }
125 try {
126 dc.getOption(null);
127 throw new RuntimeException("NullPointerException not thrown");
128 } catch (NullPointerException x) {
129 }
130
131 // ClosedChannelException
132 dc.close();
133 try {
134 dc.setOption(IP_MULTICAST_LOOP, true);
135 throw new RuntimeException("ClosedChannelException not thrown");
136 } catch (ClosedChannelException x) {
137 }
138 }
139 }