1/*
2 * Copyright (c) 2007, 2013, 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/*
25 * @test
26 * @bug 6521014 6543428
27 * @summary IOException thrown when Socket tries to bind to an local IPv6 address on SuSE Linux
28 * @library /test/lib
29 * @build jdk.test.lib.NetworkConfiguration
30 *        jdk.test.lib.Platform
31 * @run main B6521014
32 */
33
34import java.net.*;
35import java.io.*;
36import java.util.*;
37import jdk.test.lib.NetworkConfiguration;
38
39/*
40 *
41 * What this testcase is to test is a (weird) coupling through the
42 * cached_scope_id field of java.net.Inet6Address. Native method
43 * NET_InetAddressToSockaddr as in Linux platform will try to write
44 * and read this field, therefore Inet6Address becomes 'stateful'.
45 * So the coupling. Certain executive order, e.g. two methods use
46 * the same Inet6Address instance as illustrated in this test case,
47 * will show side effect of such coupling.
48 *
49 * And on Windows, NET_InetAddressToSockaddr() did not assign appropriate
50 * sin6_scope_id value to sockaddr_in6 structure if there's no one coming
51 * with Inet6Address instance, which caused bind exception. This test use
52 * link-local address without %scope suffix, so it is also going to test
53 * that.
54 *
55 */
56public class B6521014 {
57
58    static Inet6Address removeScope(Inet6Address addr) {
59        try {
60            return (Inet6Address)InetAddress.getByAddress(addr.getAddress());
61        } catch (IOException e) {
62            throw new UncheckedIOException(e);
63        }
64    }
65
66    static Optional<Inet6Address> getLocalAddr() throws Exception {
67        return NetworkConfiguration.probe()
68                .ip6Addresses()
69                .filter(Inet6Address::isLinkLocalAddress)
70                .map(B6521014::removeScope)
71                .findFirst();
72    }
73
74    static void test1(Inet6Address sin) throws Exception {
75        try (ServerSocket ssock = new ServerSocket(0);
76             Socket sock = new Socket()) {
77            int port = ssock.getLocalPort();
78            sock.connect(new InetSocketAddress(sin, port), 100);
79        } catch (SocketTimeoutException e) {
80            // time out exception is okay
81            System.out.println("timed out when connecting.");
82        }
83    }
84
85    static void test2(Inet6Address sin) throws Exception {
86        try (ServerSocket ssock = new ServerSocket(0);
87             Socket sock = new Socket()) {
88            int port = ssock.getLocalPort();
89            ssock.setSoTimeout(100);
90            sock.bind(new InetSocketAddress(sin, 0));
91            sock.connect(new InetSocketAddress(sin, port), 100);
92        } catch (SocketTimeoutException expected) {
93            // time out exception is okay
94            System.out.println("timed out when connecting.");
95        }
96    }
97
98    public static void main(String[] args) throws Exception {
99        Optional<Inet6Address> oaddr = getLocalAddr();
100        if (!oaddr.isPresent()) {
101            System.out.println("Cannot find a link-local address.");
102            return;
103        }
104
105        Inet6Address addr = oaddr.get();
106        System.out.println("Using " + addr);
107        test1(addr);
108        test2(addr);
109    }
110}
111