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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.
*/
/*
*
*
* Tests that the channel returned by System.inheritedChannel()
* is in blocking mode, bound, and in the case of a SocketChannel
* connected to a peer.
*
* The test works by launching a test service (called StateTestService) so
* that it inherits each type of channel. The test service checks the
* socket state and replies back to this class via an out-of-band
* channel.
*/
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.DatagramChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
public class StateTest {
private static int failures = 0;
private static String TEST_SERVICE = "StateTestService";
/*
* Reads the test result from the "out-of-band" connection to the test service.
*
* The out-of-band connection is just a TCP connection from the service to
* this class. waitForTestResult just waits (with timeout) for the service
* to connect. Once connected it waits (with timeout) for the test result.
* The test result is examined.
*/
private static void waitForTestResult(ServerSocketChannel ssc, boolean expectFail) throws IOException {
Selector sel = ssc.provider().openSelector();
SelectionKey sk;
SocketChannel sc;
/*
* Wait for service to connect
*/
ssc.configureBlocking(false);
sk = ssc.register(sel, SelectionKey.OP_ACCEPT);
long to = 15*1000;
sc = null;
for (;;) {
long st = System.currentTimeMillis();
sel.select(to);
if (sk.isAcceptable() && ((sc = ssc.accept()) != null)) {
// connection established
break;
}
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0) {
throw new IOException("Timed out waiting for service to report test result");
}
}
sk.cancel();
ssc.configureBlocking(false);
/*
* Wait for service to report test result
*/
sc.configureBlocking(false);
sk = sc.register(sel, SelectionKey.OP_READ);
to = 5000;
ByteBuffer bb = ByteBuffer.allocateDirect(20);
for (;;) {
long st = System.currentTimeMillis();
sel.select(to);
if (sk.isReadable()) {
int n = sc.read(bb);
if (n > 0) {
break;
}
if (n < 0) {
throw new IOException("Premature EOF - no test result from service");
}
}
sel.selectedKeys().remove(sk);
to -= System.currentTimeMillis() - st;
if (to <= 0) {
throw new IOException("Timed out waiting for service to report test result");
}
}
sk.cancel();
sc.close();
sel.close();
/*
* Examine the test result
*/
bb.flip();
byte b = bb.get();
if (expectFail && b == 'P') {
System.err.println("Test passed - test is expected to fail!!!");
failures++;
}
if (!expectFail && b != 'P') {
System.err.println("Test failed!");
failures++;
}
}
public static void main(String args[]) throws IOException {
boolean expectFail = false;
/*
* [-expectFail] [options...]
*/
String options[] = args;
if (args.length > 0 && args[0].equals("-expectFail")) {
// shift out first arg to create options
expectFail = true;
options = new String[args.length-1];
if (args.length > 1) {
System.arraycopy(args, 1, options, 0, args.length-1);
}
}
/*
* Create the listener which will be used to read the test result
* from the service.
*/
ServerSocketChannel ssc = ServerSocketChannel.open();
ssc.socket().bind(new InetSocketAddress(0));
/*
* The port is passed to the service as an argument.
*/
int port = ssc.socket().getLocalPort();
String arg[] = new String[1];
arg[0] = String.valueOf(port);
/*
* Launch service with a SocketChannel (tcp nowait)
*/
SocketChannel sc = Launcher.launchWithSocketChannel(TEST_SERVICE, options, arg);
waitForTestResult(ssc, expectFail);
sc.close();
/*
* Launch service with a ServerSocketChannel (tcp wait)
* launchWithServerSocketChannel establishes a connection to the service
* and the returned SocketChannel is connected to the service.
*/
sc = Launcher.launchWithServerSocketChannel(TEST_SERVICE, options, arg);
waitForTestResult(ssc, expectFail);
sc.close();
/*
* Launch service with a DatagramChannel (udp wait)
*/
DatagramChannel dc = Launcher.launchWithDatagramChannel(TEST_SERVICE, options, arg);
waitForTestResult(ssc, expectFail);
dc.close();
if (failures > 0) {
throw new RuntimeException("Test failed - see log for details");
} else {
System.out.println("All tests passed.");
}
}
}
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