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/*
* Copyright (c) 2002, 2024, 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 4701299
* @summary Keep-Alive-Timer thread management in KeepAliveCache causes memory leak
* @library /test/lib
* @run main KeepAliveTimerThread
* @run main/othervm -Djava.net.preferIPv6Addresses=true KeepAliveTimerThread
*/
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketTimeoutException;
import java.net.URL;
import jdk.test.lib.net.URIBuilder;
import static java.net.Proxy.NO_PROXY;
public class KeepAliveTimerThread {
static class Fetcher implements Runnable {
URL url;
Fetcher(URL url) {
this.url = url;
}
public void run() {
try {
InputStream in = url.openConnection(NO_PROXY).getInputStream();
byte b[] = new byte[128];
int n;
do {
n = in.read(b);
} while (n > 0);
in.close();
} catch (Exception x) {
x.printStackTrace();
}
}
}
static class Server extends Thread {
ServerSocket server;
Server (ServerSocket server) {
super ();
this.server = server;
}
void readAll (Socket s) throws IOException {
byte[] buf = new byte [128];
InputStream is = s.getInputStream ();
s.setSoTimeout(1000);
try {
while (is.read(buf) > 0) ;
} catch (SocketTimeoutException x) { }
}
/*
* Our "http" server to return a 404
*/
public void run() {
try {
Socket s = server.accept();
readAll(s);
PrintStream out = new PrintStream(
new BufferedOutputStream(
s.getOutputStream() ));
/* send the header */
out.print("HTTP/1.1 200 OK\r\n");
out.print("Content-Type: text/html; charset=iso-8859-1\r\n");
out.print("Content-Length: 78\r\n");
out.print("\r\n");
out.print("<HTML>");
out.print("<HEAD><TITLE>File Content</TITLE></HEAD>");
out.print("<BODY>A dummy body.</BODY>");
out.print("</HTML>");
out.flush();
s.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
try { server.close(); } catch (IOException unused) {}
}
}
}
public static void main(String args[]) throws Exception {
InetAddress loopback = InetAddress.getLoopbackAddress();
ServerSocket ss = new ServerSocket();
ss.bind(new InetSocketAddress(loopback, 0));
Server s = new Server(ss);
s.start();
URL url = URIBuilder.newBuilder()
.scheme("http")
.loopback()
.port(ss.getLocalPort())
.toURL();
System.out.println("URL: " + url);
// start fetch in its own thread group
ThreadGroup grp = new ThreadGroup("MyGroup");
// http request in another thread group
Thread thr = new Thread(grp, new Fetcher(url));
thr.start();
thr.join();
// fetcher is done - the group should now be empty
if (grp.activeCount() > 0) {
throw new RuntimeException("Keep-alive thread started in wrong thread group");
}
}
}
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