/*
* Copyright ( c ) 2001 , 2013 , 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 .
*
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* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/* @test
* @ bug 4405354 6594296 8058216
* @ library / test / lib
* @ run main / othervm - Xcheck : jni Test
* @ run main / othervm - Xcheck : jni - Djava . net . preferIPv4Stack = true Test
* @ summary Basic tests for NetworkInterface
*/
import java.net.NetworkInterface;
import java.net.InetAddress;
import java.util.Enumeration;
import jdk.test.lib.net.IPSupport;
public class Test {
static final boolean isWindows = System.getProperty("os.name" ).startsWith("Windows" );
public static void main(String args[]) throws Exception {
IPSupport.throwSkippedExceptionIfNonOperational();
Enumeration nifs = NetworkInterface.getNetworkInterfaces();
while (nifs.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface)nifs.nextElement();
//JDK-8038276: Should not test on Windows with Teredo Tunneling Pseudo-Interface
String dName = ni.getDisplayName();
if (isWindows && dName != null && dName.contains("Teredo" ))
continue ;
String name = ni.getName();
System.out.println("\n" + name);
/*
* Enumeration the IP addresses on this interface
*/
Enumeration addrs = ni.getInetAddresses();
while (addrs.hasMoreElements()) {
InetAddress addr = (InetAddress)addrs.nextElement();
System.out.println(addr);
if (NetworkInterface.getByInetAddress(addr) == null ) {
throw new Exception("getByInetAddress returned null" );
}
}
System.out.println("getInetAddresses() test passed." );
/*
* Check equals and hashCode contract
*/
NetworkInterface ni2 = NetworkInterface.getByName(name);
if (!ni2.equals(ni)) {
throw new Exception("getByName returned: " + ni2);
}
if (!ni.equals(ni2)) {
throw new Exception("equals specification broken" );
}
System.out.println("equals() tests passed." );
if (ni2.hashCode() != ni.hashCode()) {
throw new Exception("hashCode contract broken" );
}
System.out.println("hashCode() test passed." );
byte [] ba = ni.getHardwareAddress();
if (ba != null && ba.length == 0 ) {
throw new Exception("getHardwareAddress returned 0 length byte array" );
}
System.out.println("getHardwareAddress() test passed." );
}
// misc tests :-
// getByXXX(null) should throw NPE
// getByXXX("garbage") should return null
System.out.println("\nMiscellenous tests: " );
try {
NetworkInterface.getByName(null );
} catch (NullPointerException npe) {
}
System.out.println("getByName(null) test passed." );
try {
NetworkInterface.getByInetAddress(null );
} catch (NullPointerException npe) {
}
System.out.println("getByInetAddress(null) test passed." );
if (NetworkInterface.getByName("not-a-valid-name" ) != null ) {
throw new Exception
("getByName returned unexpected interface: null expected" );
}
System.out.println("getByName(<unknown>) test passed." );
InetAddress ia = InetAddress.getByName("255.255.255.255" );
if (NetworkInterface.getByInetAddress(ia) != null ) {
throw new Exception
("getByInetAddress returned unexpected interface: null expected" );
}
System.out.println("getByName(getByInetAddress(<unknown>) test passed." );
}
}
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