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