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 for setOption/getOption/options methods
27 */
28
29import java.nio.*;
30import java.nio.channels.*;
31import java.net.*;
32import java.io.IOException;
33import java.util.*;
34import static java.net.StandardSocketOption.*;
35
36public class SocketOptionTests {
37
38    static <T> void checkOption(DatagramChannel dc,
39                                SocketOption<T> name,
40                                T expectedValue)
41        throws IOException
42    {
43        T value = dc.getOption(name);
44        if (!value.equals(expectedValue))
45            throw new RuntimeException("value not as expected");
46    }
47
48    public static void main(String[] args) throws IOException {
49        DatagramChannel dc = DatagramChannel.open();
50
51        // check supported options
52        Set<SocketOption<?>> options = dc.supportedOptions();
53        List<? extends SocketOption<?>> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
54            SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL,
55            IP_MULTICAST_LOOP);
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        checkOption(dc, SO_BROADCAST, false);
63        checkOption(dc, IP_MULTICAST_TTL, 1);           // true on supported platforms
64        checkOption(dc, IP_MULTICAST_LOOP, true);       // true on supported platforms
65
66        // allowed to change when not bound
67        dc.setOption(SO_BROADCAST, true);
68        checkOption(dc, SO_BROADCAST, true);
69        dc.setOption(SO_BROADCAST, false);
70        checkOption(dc, SO_BROADCAST, false);
71        dc.setOption(SO_SNDBUF, 16*1024);       // can't check
72        dc.setOption(SO_RCVBUF, 16*1024);       // can't check
73        dc.setOption(SO_REUSEADDR, true);
74        checkOption(dc, SO_REUSEADDR, true);
75        dc.setOption(SO_REUSEADDR, false);
76        checkOption(dc, SO_REUSEADDR, false);
77
78        // bind socket
79        dc.bind(new InetSocketAddress(0));
80
81        // allow to change when bound
82        dc.setOption(SO_BROADCAST, true);
83        checkOption(dc, SO_BROADCAST, true);
84        dc.setOption(SO_BROADCAST, false);
85        checkOption(dc, SO_BROADCAST, false);
86        dc.setOption(IP_TOS, 0x08);     // can't check
87        dc.setOption(IP_MULTICAST_TTL, 2);
88        checkOption(dc, IP_MULTICAST_TTL, 2);
89        dc.setOption(IP_MULTICAST_LOOP, false);
90        checkOption(dc, IP_MULTICAST_LOOP, false);
91        dc.setOption(IP_MULTICAST_LOOP, true);
92        checkOption(dc, IP_MULTICAST_LOOP, true);
93
94
95        // NullPointerException
96        try {
97            dc.setOption(null, "value");
98            throw new RuntimeException("NullPointerException not thrown");
99        } catch (NullPointerException x) {
100        }
101        try {
102            dc.getOption(null);
103            throw new RuntimeException("NullPointerException not thrown");
104        } catch (NullPointerException x) {
105        }
106
107        // ClosedChannelException
108        dc.close();
109        try {
110            dc.setOption(IP_MULTICAST_LOOP, true);
111            throw new RuntimeException("ClosedChannelException not thrown");
112        } catch (ClosedChannelException x) {
113        }
114    }
115}
116