1 /*
2 * Copyright (c) 2007, 2011, 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 to check SocketChannel setOption/getOption/options
27 * methods.
28 * @run main SocketOptionTests
29 * @run main/othervm --limit-modules=java.base SocketOptionTests
30 */
31
32 import java.nio.*;
33 import java.nio.channels.*;
34 import java.net.*;
35 import java.io.IOException;
36 import java.util.*;
37 import static java.net.StandardSocketOptions.*;
38
39 public class SocketOptionTests {
40
41 static void checkOption(SocketChannel sc, SocketOption name, Object expectedValue)
42 throws IOException
43 {
44 Object value = sc.getOption(name);
45 if (!value.equals(expectedValue))
46 throw new RuntimeException("value not as expected");
47 }
48
49 public static void main(String[] args) throws IOException {
50 SocketChannel sc = SocketChannel.open();
51
52 // check supported options
53 Set<SocketOption<?>> options = sc.supportedOptions();
54 List<? extends SocketOption> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
55 SO_KEEPALIVE, SO_REUSEADDR, SO_LINGER, TCP_NODELAY);
56 for (SocketOption opt: expected) {
57 if (!options.contains(opt))
58 throw new RuntimeException(opt.name() + " should be supported");
59 }
60
61 // check specified defaults
62 int linger = sc.<Integer>getOption(SO_LINGER);
63 if (linger >= 0)
64 throw new RuntimeException("initial value of SO_LINGER should be < 0");
65 checkOption(sc, SO_KEEPALIVE, false);
66 checkOption(sc, TCP_NODELAY, false);
67
68 // allowed to change when not bound
69 sc.setOption(SO_KEEPALIVE, true);
70 checkOption(sc, SO_KEEPALIVE, true);
71 sc.setOption(SO_KEEPALIVE, false);
72 checkOption(sc, SO_KEEPALIVE, false);
73 sc.setOption(SO_SNDBUF, 128*1024); // can't check
74 sc.setOption(SO_RCVBUF, 256*1024); // can't check
75 int before, after;
76 before = sc.getOption(SO_SNDBUF);
77 after = sc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF);
78 if (after < before)
79 throw new RuntimeException("setOption caused SO_SNDBUF to decrease");
80 before = sc.getOption(SO_RCVBUF);
81 after = sc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
82 if (after < before)
83 throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
84 sc.setOption(SO_REUSEADDR, true);
85 checkOption(sc, SO_REUSEADDR, true);
86 sc.setOption(SO_REUSEADDR, false);
87 checkOption(sc, SO_REUSEADDR, false);
88 sc.setOption(SO_LINGER, 10);
89 linger = sc.<Integer>getOption(SO_LINGER);
90 if (linger < 1)
91 throw new RuntimeException("expected linger to be enabled");
92 sc.setOption(SO_LINGER, -1);
93 linger = sc.<Integer>getOption(SO_LINGER);
94 if (linger >= 0)
95 throw new RuntimeException("expected linger to be disabled");
96 sc.setOption(TCP_NODELAY, true);
97 checkOption(sc, TCP_NODELAY, true);
98 sc.setOption(TCP_NODELAY, false); // can't check
99
100 // bind socket
101 sc.bind(new InetSocketAddress(0));
102
103 // allow to change when bound
104 sc.setOption(SO_KEEPALIVE, true);
105 checkOption(sc, SO_KEEPALIVE, true);
106 sc.setOption(SO_KEEPALIVE, false);
107 checkOption(sc, SO_KEEPALIVE, false);
108
109 sc.setOption(SO_LINGER, 10);
110 linger = sc.<Integer>getOption(SO_LINGER);
111 if (linger < 1)
112 throw new RuntimeException("expected linger to be enabled");
113 sc.setOption(SO_LINGER, -1);
114 linger = sc.<Integer>getOption(SO_LINGER);
115 if (linger >= 0)
116 throw new RuntimeException("expected linger to be disabled");
117 sc.setOption(TCP_NODELAY, true); // can't check
118 sc.setOption(TCP_NODELAY, false); // can't check
119
120 // NullPointerException
121 try {
122 sc.setOption(null, "value");
123 throw new RuntimeException("NullPointerException not thrown");
124 } catch (NullPointerException x) {
125 }
126 try {
127 sc.getOption(null);
128 throw new RuntimeException("NullPointerException not thrown");
129 } catch (NullPointerException x) {
130 }
131
132 // ClosedChannelException
133 sc.close();
134 try {
135 sc.setOption(TCP_NODELAY, true);
136 throw new RuntimeException("ClosedChannelException not thrown");
137 } catch (ClosedChannelException x) {
138 }
139 }
140 }