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/*
* Copyright (c) 2003, 2017, 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.
*/
/*
*
*
* This unit test checks that closing the channel returned by
* System.inheritedChannel closes the underlying network socket.
*
* The test launches the "echo service" with arguments to instruct the
* service to close the channel after it receives a small message. The
* service then delays/lingers for 15 seconds before shuting down. To
* prove that the close works we check that we see EOF (meaning the
* peer has closed the connection) in less than 15 seconds.
*/
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
public class CloseTest {
public static void main(String args[]) throws Exception {
String msg = "HELLO";
// Launch the service with arguments to tell it to close
// the connection after reading 5 bytes ("HELLO"). After
// closing the connection the service should hang around
// for 15 seconds.
String service_args[] = new String[2];
service_args[0] = String.valueOf(msg.length());
service_args[1] = String.valueOf( 15*1000 );
SocketChannel sc = Launcher.launchWithSocketChannel("EchoService", service_args);
// send message - service will echo the message and close the connection.
sc.write(ByteBuffer.wrap(msg.getBytes("UTF-8")));
// read the reply (with timeout)
ByteBuffer bb = ByteBuffer.allocateDirect(50);
sc.configureBlocking(false);
Selector sel = sc.provider().openSelector();
SelectionKey sk = sc.register(sel, SelectionKey.OP_READ);
long to = 12 * 1000;
for (;;) {
long st = System.currentTimeMillis();
sel.select(to);
if (sk.isReadable()) {
int n = sc.read(bb);
// EOF
if (n < 0) {
break;
}
}
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0) {
throw new RuntimeException("Timed out waiting for connection to close");
}
}
sel.close();
sc.close();
// finally check that the reply length is okay
bb.flip();
if (bb.remaining() < msg.length()) {
throw new RuntimeException("Premature EOF from echo service");
}
System.out.println("Test passed - service closed connection.");
}
}
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