73 lines
2.8 KiB
Java
73 lines
2.8 KiB
Java
/*
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* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8133196
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* @summary test functionality of getOriginalHostName(InetAddress)
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* @modules java.base/jdk.internal.access
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*/
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import java.net.InetAddress;
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import jdk.internal.access.JavaNetInetAddressAccess;
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import jdk.internal.access.SharedSecrets;
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public class getOriginalHostName {
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private static final JavaNetInetAddressAccess jna =
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SharedSecrets.getJavaNetInetAddressAccess();
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public static void main(String[] args) throws Exception {
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final String HOST = "dummyserver.java.net";
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InetAddress ia = null;
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ia = InetAddress.getByName(HOST);
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testInetAddress(ia, HOST);
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ia = InetAddress.getByName("255.255.255.0");
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testInetAddress(ia, null);
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ia = InetAddress.getByAddress(new byte[]{1,1,1,1});
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testInetAddress(ia, null);
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ia = InetAddress.getLocalHost();
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testInetAddress(ia, ia.getHostName());
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ia = InetAddress.getLoopbackAddress();
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testInetAddress(ia, ia.getHostName());
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}
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private static void testInetAddress(InetAddress ia, String expected)
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throws Exception {
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System.out.println("Testing InetAddress: " + ia);
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System.out.println("Expecting original hostname of : " + expected);
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String origHostName = jna.getOriginalHostName(ia);
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System.out.println("via JavaNetAccess: " + origHostName);
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if (origHostName == null && expected != null) {
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throw new RuntimeException("Unexpected null. Testing:" + expected);
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} else if (expected != null && !origHostName.equals(expected)) {
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throw new RuntimeException("Unexpected hostname :" + origHostName);
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} else if (expected == null && origHostName != null) {
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throw new RuntimeException("Unexpected origHostName: " + origHostName);
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}
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}
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}
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