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.Utils 31 * jdk.test.lib.Asserts 32 * jdk.test.lib.JDKToolFinder 33 * jdk.test.lib.JDKToolLauncher 34 * jdk.test.lib.Platform 35 * jdk.test.lib.process.* 36 * @run main B6521014 37 */ 38 39 import java.net.*; 40 import java.io.*; 41 import java.util.*; 42 import jdk.test.lib.NetworkConfiguration; 43 44 /* 45 * 46 * What this testcase is to test is a (weird) coupling through the 47 * cached_scope_id field of java.net.Inet6Address. Native method 48 * NET_InetAddressToSockaddr as in Linux platform will try to write 49 * and read this field, therefore Inet6Address becomes 'stateful'. 50 * So the coupling. Certain executive order, e.g. two methods use 51 * the same Inet6Address instance as illustrated in this test case, 52 * will show side effect of such coupling. 53 * 54 * And on Windows, NET_InetAddressToSockaddr() did not assign appropriate 55 * sin6_scope_id value to sockaddr_in6 structure if there's no one coming 56 * with Inet6Address instance, which caused bind exception. This test use 57 * link-local address without %scope suffix, so it is also going to test 58 * that. 59 * 60 */ 61 public class B6521014 { 62 63 static Inet6Address removeScope(Inet6Address addr) { 64 try { 65 return (Inet6Address)InetAddress.getByAddress(addr.getAddress()); 66 } catch (IOException e) { 67 throw new UncheckedIOException(e); 68 } 69 } 70 71 static Optional<Inet6Address> getLocalAddr() throws Exception { 72 return NetworkConfiguration.probe() 73 .ip6Addresses() 74 .filter(Inet6Address::isLinkLocalAddress) 75 .map(B6521014::removeScope) 76 .findFirst(); 77 } 78 79 static void test1(Inet6Address sin) throws Exception { 80 try (ServerSocket ssock = new ServerSocket(0); 81 Socket sock = new Socket()) { 82 int port = ssock.getLocalPort(); 83 sock.connect(new InetSocketAddress(sin, port), 100); 84 } catch (SocketTimeoutException e) { 85 // time out exception is okay 86 System.out.println("timed out when connecting."); 87 } 88 } 89 90 static void test2(Inet6Address sin) throws Exception { 91 try (ServerSocket ssock = new ServerSocket(0); 92 Socket sock = new Socket()) { 93 int port = ssock.getLocalPort(); 94 ssock.setSoTimeout(100); 95 sock.bind(new InetSocketAddress(sin, 0)); 96 sock.connect(new InetSocketAddress(sin, port), 100); 97 } catch (SocketTimeoutException expected) { 98 // time out exception is okay 99 System.out.println("timed out when connecting."); 100 } 101 } 102 103 public static void main(String[] args) throws Exception { 104 Optional<Inet6Address> oaddr = getLocalAddr(); 105 if (!oaddr.isPresent()) { 106 System.out.println("Cannot find a link-local address."); 107 return; 108 } 109 110 Inet6Address addr = oaddr.get(); 111 System.out.println("Using " + addr); 112 test1(addr); 113 test2(addr); 114 } 115 }