J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2007 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 | /* |
| 25 | * @test |
| 26 | * @bug 6521014 6543428 |
| 27 | * @summary IOException thrown when Socket tries to bind to an local IPv6 address on SuSE Linux |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | import java.net.*; |
| 32 | import java.io.*; |
| 33 | import java.util.*; |
| 34 | |
| 35 | |
| 36 | /* |
| 37 | * |
| 38 | * What this testcase is to test is a (weird) coupling through the |
| 39 | * cached_scope_id field of java.net.Inet6Address. Native method |
| 40 | * NET_InetAddressToSockaddr as in Linux platform will try to write |
| 41 | * and read this field, therefore Inet6Address becomes 'stateful'. |
| 42 | * So the coupling. Certain executive order, e.g. two methods use |
| 43 | * the same Inet6Address instance as illustrated in this test case, |
| 44 | * will show side effect of such coupling. |
| 45 | * |
| 46 | * And on Windows, NET_InetAddressToSockaddr() did not assign appropriate |
| 47 | * sin6_scope_id value to sockaddr_in6 structure if there's no one coming |
| 48 | * with Inet6Address instance, which caused bind exception. This test use |
| 49 | * link-local address without %scope suffix, so it is also going to test |
| 50 | * that. |
| 51 | * |
| 52 | */ |
| 53 | public class B6521014 { |
| 54 | |
| 55 | static InetAddress sin; |
| 56 | |
| 57 | static Inet6Address getLocalAddr () throws Exception { |
| 58 | Enumeration e = NetworkInterface.getNetworkInterfaces(); |
| 59 | while (e.hasMoreElements()) { |
| 60 | NetworkInterface ifc = (NetworkInterface) e.nextElement(); |
| 61 | Enumeration addrs = ifc.getInetAddresses(); |
| 62 | while (addrs.hasMoreElements()) { |
| 63 | InetAddress a = (InetAddress)addrs.nextElement(); |
| 64 | if (a instanceof Inet6Address) { |
| 65 | Inet6Address ia6 = (Inet6Address) a; |
| 66 | if (ia6.isLinkLocalAddress()) { |
| 67 | // remove %scope suffix |
| 68 | return (Inet6Address)InetAddress.getByAddress(ia6.getAddress()); |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | return null; |
| 74 | } |
| 75 | |
| 76 | static void test1() throws Exception { |
| 77 | ServerSocket ssock; |
| 78 | Socket sock; |
| 79 | int port; |
| 80 | |
| 81 | ssock = new ServerSocket(0); |
| 82 | port = ssock.getLocalPort(); |
| 83 | sock = new Socket(); |
| 84 | try { |
| 85 | sock.connect(new InetSocketAddress(sin, port), 100); |
| 86 | } catch (SocketTimeoutException e) { |
| 87 | // time out exception is okay |
| 88 | System.out.println("timed out when connecting."); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | static void test2() throws Exception { |
| 93 | Socket sock; |
| 94 | ServerSocket ssock; |
| 95 | int port; |
| 96 | int localport; |
| 97 | |
| 98 | ssock = new ServerSocket(0); |
| 99 | ssock.setSoTimeout(100); |
| 100 | port = ssock.getLocalPort(); |
| 101 | localport = port + 1; |
| 102 | sock = new Socket(); |
| 103 | sock.bind(new InetSocketAddress(sin, localport)); |
| 104 | try { |
| 105 | sock.connect(new InetSocketAddress(sin, port), 100); |
| 106 | } catch (SocketTimeoutException e) { |
| 107 | // time out exception is okay |
| 108 | System.out.println("timed out when connecting."); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | public static void main(String[] args) throws Exception { |
| 113 | sin = getLocalAddr(); |
| 114 | if (sin == null) { |
| 115 | System.out.println("Cannot find a link-local address."); |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | try { |
| 120 | test1(); |
| 121 | test2(); |
| 122 | } catch (IOException e) { |
| 123 | throw new RuntimeException("Test failed: cannot create socket.", e); |
| 124 | } |
| 125 | } |
| 126 | } |