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/*
* Copyright (c) 2019, 2023, 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.
*/
//
// SunJSSE does not support dynamic system properties, no way to re-use
// system properties in samevm/agentvm mode.
//
/*
* @test
* @bug 8224829
* @summary AsyncSSLSocketClose.java has timing issue.
* @library /javax/net/ssl/templates
* @run main/othervm BlockedAsyncClose
*/
import javax.net.ssl.*;
import java.io.*;
import java.net.SocketException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Arrays;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/*
* To manually verify that the write thread was blocked when socket.close() is called,
* run the test with -Djavax.net.debug=ssl. You should see the message
* "SSLSocket output duplex close failed: SO_LINGER timeout, close_notify message cannot be sent."
*/
public class BlockedAsyncClose extends SSLContextTemplate implements Runnable {
SSLSocket socket;
SSLServerSocket ss;
// Is the socket ready to close?
private final CountDownLatch closeCondition = new CountDownLatch(1);
private final Lock writeLock = new ReentrantLock();
public static void main(String[] args) throws Exception {
new BlockedAsyncClose().runTest();
}
public void runTest() throws Exception {
SSLServerSocketFactory sslssf = createServerSSLContext().getServerSocketFactory();
InetAddress loopback = InetAddress.getLoopbackAddress();
ss = (SSLServerSocket)sslssf.createServerSocket();
ss.bind(new InetSocketAddress(loopback, 0));
SSLSocketFactory sslsf = createClientSSLContext().getSocketFactory();
socket = (SSLSocket)sslsf.createSocket(loopback, ss.getLocalPort());
SSLSocket serverSoc = (SSLSocket)ss.accept();
ss.close();
new Thread(this).start();
serverSoc.startHandshake();
boolean closeIsReady = closeCondition.await(90L, TimeUnit.SECONDS);
if (!closeIsReady) {
System.out.println(
"Ignore, the closure is not ready yet in 90 seconds.");
return;
}
socket.setSoLinger(true, 10);
// if the writeLock is not released by the other thread within 10
// seconds it is probably blocked, and we can try to close the socket
while (writeLock.tryLock(10, TimeUnit.SECONDS)) {
writeLock.unlock();
}
System.out.println("Calling socket.close()");
socket.close();
System.out.flush();
}
// block in write
public void run() {
byte[] ba = new byte[1024];
Arrays.fill(ba, (byte) 0x7A);
try {
OutputStream os = socket.getOutputStream();
int count = 0;
// 1st round write
count += ba.length;
System.out.println(count + " bytes to be written");
os.write(ba);
System.out.println(count + " bytes written");
// Signal, ready to close.
closeCondition.countDown();
// write more
while (true) {
count += ba.length;
System.out.println(count + " bytes to be written");
writeLock.lock();
os.write(ba);
// This isn't in a try/finally. If an exception is thrown
// and the lock is released, the main thread will
// loop until the test times out. So don't release it.
writeLock.unlock();
System.out.println(count + " bytes written");
}
} catch (SocketException se) {
// the closing may be in progress
System.out.println("interrupted? " + se);
} catch (Exception e) {
if (socket.isClosed() || socket.isOutputShutdown()) {
System.out.println("interrupted, the socket is closed");
} else {
throw new RuntimeException("interrupted?", e);
}
}
}
}
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