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/**
* @ test
* @ bug 6210227
* @ library / test / lib
* @ summary REGRESSION : Socket . getLocalAddress ( ) returns address of 0 . 0 . 0 . 0 on outbound TCP .
* This test requires binding to the wildcard address .
* @ run main B6210227
* @ run main / othervm - Djava . net . preferIPv4Stack = true B6210227
* @ run main / othervm - Djava . net . preferIPv6Addresses = true B6210227
*/
import java.util.*;
import java.net.*;
import java.util.stream.IntStream;
import java.util.stream.Collectors;
import jdk.test.lib.net.IPSupport;
public class B6210227 {
public static void main(String[] args) throws Exception
{
IPSupport.throwSkippedExceptionIfNonOperational();
ServerSocket ss = new ServerSocket(0 );
int port = ss.getLocalPort();
try {
InetSocketAddress isa = new InetSocketAddress(InetAddress.getLocalHost(), port);
Socket s = new Socket();
s.connect( isa, 1000 );
InetAddress iaLocal = s.getLocalAddress(); // if this comes back as 0.0.0.0 this would demonstrate issue
String sLocalHostname = iaLocal.getHostName();
byte [] address = iaLocal.getAddress();
if (isWildcard(address)) {
if (iaLocal instanceof Inet6Address) {
String msg = IntStream.range(0 , address.length)
.mapToObj(i -> "0" ).collect(Collectors.joining(":" ));
throw new RuntimeException(msg + " returned" );
} else {
throw new RuntimeException ("0.0.0.0 returned" );
}
}
System.out.println("local hostname is " +sLocalHostname );
} catch (Exception e) {
System.out.println("Exception happened" );
throw e;
} finally {
ss.close();
}
}
private static boolean isWildcard(byte [] bytes) {
for (int i = 0 ; i < bytes.length ; i++) {
if (bytes[i] != 0 ) return false ;
}
return true ;
}
}
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