/* * Copyright (c) 2015, 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. */ /* * @test * @bug 8133196 * @summary test functionality of getOriginalHostName(InetAddress) */ import java.io.*; import java.net.InetAddress; import sun.misc.JavaNetAccess; import sun.misc.SharedSecrets; public class getOriginalHostName { private static final JavaNetAccess jna = SharedSecrets.getJavaNetAccess(); public static void main(String[] args) throws Exception { final String HOST = "dummyserver.java.net"; InetAddress ia = null; ia = InetAddress.getByName(HOST); testInetAddress(ia, HOST); ia = InetAddress.getByName("255.255.255.0"); testInetAddress(ia, null); ia = InetAddress.getByAddress(new byte[]{1,1,1,1}); testInetAddress(ia, null); ia = InetAddress.getLocalHost(); testInetAddress(ia, ia.getHostName()); ia = InetAddress.getLoopbackAddress(); testInetAddress(ia, ia.getHostName()); } private static void testInetAddress(InetAddress ia, String expected) throws Exception { System.out.println("Testing InetAddress: " + ia); System.out.println("Expecting original hostname of : " + expected); String origHostName = jna.getOriginalHostName(ia); System.out.println("via JavaNetAccess: " + origHostName); if (origHostName == null && expected != null) { throw new RuntimeException("Unexpected null. Testing:" + expected); } else if (expected != null && !origHostName.equals(expected)) { throw new RuntimeException("Unexpected hostname :" + origHostName); } else if (expected == null && origHostName != null) { throw new RuntimeException("Unexpected origHostName: " + origHostName); } } }