SocketOptionTests.java revision 893:f06f30b29f36 
1/*
2 * Copyright 2007-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24/* @test
25 * @bug 4640544
26 * @summary Unit test to check SocketChannel setOption/getOption/options
27 *          methods.
28 */
29
30import java.nio.*;
31import java.nio.channels.*;
32import java.net.*;
33import java.io.IOException;
34import java.util.*;
35import static java.net.StandardSocketOption.*;
36
37public class SocketOptionTests {
38
39    static void checkOption(SocketChannel sc, SocketOption name, Object expectedValue)
40        throws IOException
41    {
42        Object value = sc.getOption(name);
43        if (!value.equals(expectedValue))
44            throw new RuntimeException("value not as expected");
45    }
46
47    public static void main(String[] args) throws IOException {
48        SocketChannel sc = SocketChannel.open();
49
50        // check supported options
51        Set<SocketOption<?>> options = sc.supportedOptions();
52        List<? extends SocketOption> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
53            SO_KEEPALIVE, SO_REUSEADDR, SO_LINGER, TCP_NODELAY);
54        for (SocketOption opt: expected) {
55            if (!options.contains(opt))
56                throw new RuntimeException(opt.name() + " should be supported");
57        }
58
59        // check specified defaults
60        int linger = sc.<Integer>getOption(SO_LINGER);
61        if (linger >= 0)
62            throw new RuntimeException("initial value of SO_LINGER should be < 0");
63        checkOption(sc, SO_KEEPALIVE, false);
64        checkOption(sc, TCP_NODELAY, false);
65
66        // allowed to change when not bound
67        sc.setOption(SO_KEEPALIVE, true);
68        checkOption(sc, SO_KEEPALIVE, true);
69        sc.setOption(SO_KEEPALIVE, false);
70        checkOption(sc, SO_KEEPALIVE, false);
71        sc.setOption(SO_SNDBUF, 128*1024);      // can't check
72        sc.setOption(SO_RCVBUF, 256*1024);      // can't check
73        sc.setOption(SO_REUSEADDR, true);
74        checkOption(sc, SO_REUSEADDR, true);
75        sc.setOption(SO_REUSEADDR, false);
76        checkOption(sc, SO_REUSEADDR, false);
77        sc.setOption(SO_LINGER, 10);
78        linger = sc.<Integer>getOption(SO_LINGER);
79        if (linger < 1)
80            throw new RuntimeException("expected linger to be enabled");
81        sc.setOption(SO_LINGER, -1);
82        linger = sc.<Integer>getOption(SO_LINGER);
83        if (linger >= 0)
84            throw new RuntimeException("expected linger to be disabled");
85        sc.setOption(TCP_NODELAY, true);
86        checkOption(sc, TCP_NODELAY, true);
87        sc.setOption(TCP_NODELAY, false);       // can't check
88
89        // bind socket
90        sc.bind(new InetSocketAddress(0));
91
92        // allow to change when bound
93        sc.setOption(SO_KEEPALIVE, true);
94        checkOption(sc, SO_KEEPALIVE, true);
95        sc.setOption(SO_KEEPALIVE, false);
96        checkOption(sc, SO_KEEPALIVE, false);
97
98        sc.setOption(SO_LINGER, 10);
99        linger = sc.<Integer>getOption(SO_LINGER);
100        if (linger < 1)
101            throw new RuntimeException("expected linger to be enabled");
102        sc.setOption(SO_LINGER, -1);
103        linger = sc.<Integer>getOption(SO_LINGER);
104        if (linger >= 0)
105            throw new RuntimeException("expected linger to be disabled");
106        sc.setOption(TCP_NODELAY, true);        // can't check
107        sc.setOption(TCP_NODELAY, false);       // can't check
108
109        // NullPointerException
110        try {
111            sc.setOption(null, "value");
112            throw new RuntimeException("NullPointerException not thrown");
113        } catch (NullPointerException x) {
114        }
115        try {
116            sc.getOption(null);
117            throw new RuntimeException("NullPointerException not thrown");
118        } catch (NullPointerException x) {
119        }
120
121        // ClosedChannelException
122        sc.close();
123        try {
124            sc.setOption(TCP_NODELAY, true);
125            throw new RuntimeException("ClosedChannelException not thrown");
126        } catch (ClosedChannelException x) {
127        }
128    }
129}
130