1 /*
2 * Copyright (c) 2007, 2017, 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 * @requires !vm.graal.enabled
29 * @run main SocketOptionTests
30 * @run main/othervm --limit-modules=java.base SocketOptionTests
31 */
32
33 import java.nio.*;
34 import java.nio.channels.*;
35 import java.net.*;
36 import java.io.IOException;
37 import java.util.*;
38 import static java.net.StandardSocketOptions.*;
39
40 public class SocketOptionTests {
41
42 static void checkOption(SocketChannel sc, SocketOption name, Object expectedValue)
43 throws IOException
44 {
45 Object value = sc.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 SocketChannel sc = SocketChannel.open();
52
53 // check supported options
54 Set<SocketOption<?>> options = sc.supportedOptions();
55 List<? extends SocketOption> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
56 SO_KEEPALIVE, SO_REUSEADDR, SO_LINGER, TCP_NODELAY);
57 for (SocketOption opt: expected) {
58 if (!options.contains(opt))
59 throw new RuntimeException(opt.name() + " should be supported");
60 }
61
62 // check specified defaults
63 int linger = sc.<Integer>getOption(SO_LINGER);
64 if (linger >= 0)
65 throw new RuntimeException("initial value of SO_LINGER should be < 0");
66 checkOption(sc, SO_KEEPALIVE, false);
67 checkOption(sc, TCP_NODELAY, false);
68
69 // allowed to change when not bound
70 sc.setOption(SO_KEEPALIVE, true);
71 checkOption(sc, SO_KEEPALIVE, true);
72 sc.setOption(SO_KEEPALIVE, false);
73 checkOption(sc, SO_KEEPALIVE, false);
74 sc.setOption(SO_SNDBUF, 128*1024); // can't check
75 sc.setOption(SO_RCVBUF, 256*1024); // can't check
76 int before, after;
77 before = sc.getOption(SO_SNDBUF);
78 after = sc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF);
79 if (after < before)
80 throw new RuntimeException("setOption caused SO_SNDBUF to decrease");
81 before = sc.getOption(SO_RCVBUF);
82 after = sc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
83 if (after < before)
84 throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
85 sc.setOption(SO_REUSEADDR, true);
86 checkOption(sc, SO_REUSEADDR, true);
87 sc.setOption(SO_REUSEADDR, false);
88 checkOption(sc, SO_REUSEADDR, false);
89 sc.setOption(SO_LINGER, 10);
90 linger = sc.<Integer>getOption(SO_LINGER);
91 if (linger < 1)
92 throw new RuntimeException("expected linger to be enabled");
93 sc.setOption(SO_LINGER, -1);
94 linger = sc.<Integer>getOption(SO_LINGER);
95 if (linger >= 0)
96 throw new RuntimeException("expected linger to be disabled");
97 sc.setOption(TCP_NODELAY, true);
98 checkOption(sc, TCP_NODELAY, true);
99 sc.setOption(TCP_NODELAY, false); // can't check
100
101 // bind socket
102 sc.bind(new InetSocketAddress(0));
103
104 // allow to change when bound
105 sc.setOption(SO_KEEPALIVE, true);
106 checkOption(sc, SO_KEEPALIVE, true);
107 sc.setOption(SO_KEEPALIVE, false);
108 checkOption(sc, SO_KEEPALIVE, false);
109
110 sc.setOption(SO_LINGER, 10);
111 linger = sc.<Integer>getOption(SO_LINGER);
112 if (linger < 1)
113 throw new RuntimeException("expected linger to be enabled");
114 sc.setOption(SO_LINGER, -1);
115 linger = sc.<Integer>getOption(SO_LINGER);
116 if (linger >= 0)
117 throw new RuntimeException("expected linger to be disabled");
118 sc.setOption(TCP_NODELAY, true); // can't check
119 sc.setOption(TCP_NODELAY, false); // can't check
120
121 // NullPointerException
122 try {
123 sc.setOption(null, "value");
124 throw new RuntimeException("NullPointerException not thrown");
125 } catch (NullPointerException x) {
126 }
127 try {
128 sc.getOption(null);
129 throw new RuntimeException("NullPointerException not thrown");
130 } catch (NullPointerException x) {
131 }
132
133 // ClosedChannelException
134 sc.close();
135 try {
136 sc.setOption(TCP_NODELAY, true);
137 throw new RuntimeException("ClosedChannelException not thrown");
138 } catch (ClosedChannelException x) {
139 }
140 }
141 }