/*
* Copyright (c) 2001, 2012, 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
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* questions.
*/
/**
* @test
*
* @bug 4424096
*
* @summary DatagramPacket spec needs clarification (reuse buf)
*/
import java.net.*;
public class ReuseBuf {
static String msgs[] = {"Hello World", "Java", "Good Bye"};
static int port;
static class ServerThread extends Thread{
DatagramSocket ds;
public ServerThread() {
try {
ds = new DatagramSocket();
port = ds.getLocalPort();
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
public void run() {
byte b[] = new byte[100];
DatagramPacket dp = new DatagramPacket(b,b.length);
while (true) {
try {
ds.receive(dp);
String reply = new String(dp.getData(), dp.getOffset(), dp.getLength());
ds.send(new DatagramPacket(reply.getBytes(),reply.length(),
dp.getAddress(),dp.getPort()));
if (reply.equals(msgs[msgs.length-1])) {
break;
}
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
ds.close();
}
}
public static void main(String args[]) throws Exception {
ServerThread st = new ServerThread();
st.start();
DatagramSocket ds = new DatagramSocket();
byte b[] = new byte[100];
DatagramPacket dp = new DatagramPacket(b,b.length);
for (int i = 0; i < msgs.length; i++) {
ds.send(new DatagramPacket(msgs[i].getBytes(),msgs[i].length(),
InetAddress.getLocalHost(),
port));
ds.receive(dp);
if (!msgs[i].equals(new String(dp.getData(), dp.getOffset(), dp.getLength()))) {
throw new RuntimeException("Msg expected: "+msgs[i] +msgs[i].length()+
"msg received: "+new String(dp.getData(), dp.getOffset(), dp.getLength())+dp.getLength());
}
}
ds.close();
System.out.println("Test Passed!!!");
}
}