/* * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * Portions Copyright (c) 2012 IBM Corporation */ /* @test * @bug 7163874 * @summary InetAddress.isReachable is returning false * for InetAdress 0.0.0.0 and ::0 * @run main PingThis * @run main/othervm -Djava.net.preferIPv4Stack=true PingThis */ import java.net.Inet6Address; import java.net.InetAddress; import java.net.NetworkInterface; import java.util.ArrayList; import java.util.Collections; import java.util.Iterator; import java.util.List; public class PingThis { private static boolean hasIPv6() throws Exception { List nics = Collections.list(NetworkInterface .getNetworkInterfaces()); for (NetworkInterface nic : nics) { List addrs = Collections.list(nic.getInetAddresses()); for (InetAddress addr : addrs) { if (addr instanceof Inet6Address) return true; } } return false; } public static void main(String args[]) throws Exception { if (System.getProperty("os.name").startsWith("Windows")) { return; } boolean preferIPv4Stack = "true".equals(System .getProperty("java.net.preferIPv4Stack")); List addrs = new ArrayList(); InetAddress inetAddress = null; addrs.add("0.0.0.0"); if (!preferIPv4Stack) { if (hasIPv6()) { addrs.add("::0"); } } for (String addr : addrs) { inetAddress = InetAddress.getByName(addr); System.out.println("The target ip is " + inetAddress.getHostAddress()); boolean isReachable = inetAddress.isReachable(3000); System.out.println("the target is reachable: " + isReachable); if (isReachable) { System.out.println("Test passed "); } else { System.out.println("Test failed "); throw new Exception("address " + inetAddress.getHostAddress() + " can not be reachable!"); } } } }