1 /* 2 * Copyright (c) 2015, 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 8133196 27 * @summary test functionality of getOriginalHostName(InetAddress) 28 * @modules java.base/jdk.internal.access 29 */ 30 31 import java.net.InetAddress; 32 33 import jdk.internal.access.JavaNetInetAddressAccess; 34 import jdk.internal.access.SharedSecrets; 35 36 public class getOriginalHostName { 37 38 private static final JavaNetInetAddressAccess jna = 39 SharedSecrets.getJavaNetInetAddressAccess(); 40 41 public static void main(String[] args) throws Exception { 42 final String HOST = "dummyserver.java.net"; 43 InetAddress ia = null; 44 ia = InetAddress.getByName(HOST); 45 testInetAddress(ia, HOST); 46 ia = InetAddress.getByName("255.255.255.0"); 47 testInetAddress(ia, null); 48 ia = InetAddress.getByAddress(new byte[]{1,1,1,1}); 49 testInetAddress(ia, null); 50 ia = InetAddress.getLocalHost(); 51 testInetAddress(ia, ia.getHostName()); 52 ia = InetAddress.getLoopbackAddress(); 53 testInetAddress(ia, ia.getHostName()); 54 } 55 56 57 private static void testInetAddress(InetAddress ia, String expected) 58 throws Exception { 59 60 System.out.println("Testing InetAddress: " + ia); 61 System.out.println("Expecting original hostname of : " + expected); 62 String origHostName = jna.getOriginalHostName(ia); 63 System.out.println("via JavaNetAccess: " + origHostName); 64 if (origHostName == null && expected != null) { 65 throw new RuntimeException("Unexpected null. Testing:" + expected); 66 } else if (expected != null && !origHostName.equals(expected)) { 67 throw new RuntimeException("Unexpected hostname :" + origHostName); 68 } else if (expected == null && origHostName != null) { 69 throw new RuntimeException("Unexpected origHostName: " + origHostName); 70 } 71 } 72 }