/*
* Copyright ( c ) 2001 , 2019 , 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 4408755
* @ library / test / lib
* @ summary This tests whether it ' s possible to get some informations
* out of a closed socket . This is for backward compatibility
* purposes .
* @ run main TestClose
* @ run main / othervm - Djava . net . preferIPv4Stack = true TestClose
*/
import java.net.*;
import jdk.test.lib.net.IPSupport;
public class TestClose {
public static void main(String[] args) throws Exception {
IPSupport.throwSkippedExceptionIfNonOperational();
ServerSocket ss;
Socket s;
InetAddress ad1, ad2;
int port1, port2, serverport;
InetAddress loopback = InetAddress.getLoopbackAddress();
ss = new ServerSocket();
ss.bind(new InetSocketAddress(loopback, 0 ));
serverport = ss.getLocalPort();
s = new Socket(loopback, serverport);
s.close();
ss.close();
ad1 = ss.getInetAddress();
if (ad1 == null )
throw new RuntimeException("ServerSocket.getInetAddress() returned null" );
port1 = ss.getLocalPort();
if (port1 != serverport)
throw new RuntimeException("ServerSocket.getLocalPort() returned the wrong value" );
ad2 = s.getInetAddress();
if (ad2 == null )
throw new RuntimeException("Socket.getInetAddress() returned null" );
port2 = s.getPort();
if (port2 != serverport)
throw new RuntimeException("Socket.getPort() returned wrong value" );
ad2 = s.getLocalAddress();
if (ad2 == null )
throw new RuntimeException("Socket.getLocalAddress() returned null" );
port2 = s.getLocalPort();
if (port2 == -1 )
throw new RuntimeException("Socket.getLocalPort returned -1" );
}
}
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(vorverarbeitet am 2026-10-11)
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