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/*
* Copyright (c) 2003, 2018, 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 4796166
* @summary Linger interval delays usage of released file descriptor
* @run main LingerTest
* @run main/othervm -Djava.net.preferIPv4Stack=true LingerTest
*/
import java.net.*;
import java.io.*;
public class LingerTest {
static class Sender implements Runnable {
Socket s;
public Sender(Socket s) {
this.s = s;
}
public void run() {
System.out.println ("Sender starts");
try {
s.getOutputStream().write(new byte[128*1024]);
}
catch (IOException ioe) {
}
System.out.println ("Sender ends");
}
}
static class Closer implements Runnable {
Socket s;
public Closer(Socket s) {
this.s = s;
}
public void run() {
System.out.println ("Closer starts");
try {
s.close();
}
catch (IOException ioe) {
}
System.out.println ("Closer ends");
}
}
static class Other implements Runnable {
int port;
long delay;
boolean connected = false;
public Other(int port, long delay) {
this.port = port;
this.delay = delay;
}
public void run() {
System.out.println ("Other starts: sleep " + delay);
try {
Thread.sleep(delay);
System.out.println ("Other opening socket");
Socket s = new Socket("localhost", port);
synchronized (this) {
connected = true;
}
s.close();
}
catch (Exception ioe) {
ioe.printStackTrace();
}
System.out.println ("Other ends");
}
public synchronized boolean connected() {
return connected;
}
}
public static void main(String args[]) throws Exception {
ServerSocket ss = new ServerSocket(0);
Socket s1 = new Socket("localhost", ss.getLocalPort());
Socket s2 = ss.accept();
// setup conditions for untransmitted data and lengthy
// linger interval
s1.setSendBufferSize(128*1024);
s1.setSoLinger(true, 30);
s2.setReceiveBufferSize(1*1024);
// start sender
Thread thr = new Thread(new Sender(s1));
thr.start();
// other thread that will connect after 5 seconds.
Other other = new Other(ss.getLocalPort(), 5000);
thr = new Thread(other);
thr.start();
// give sender time to queue the data
System.out.println ("Main sleep 1000");
Thread.sleep(1000);
System.out.println ("Main continue");
// close the socket asynchronously
(new Thread(new Closer(s1))).start();
System.out.println ("Main sleep 15000");
// give other time to run
Thread.sleep(15000);
System.out.println ("Main closing serversocket");
ss.close();
// check that other is done
if (!other.connected()) {
throw new RuntimeException("Other thread is blocked");
}
System.out.println ("Main ends");
}
}
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