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/*
* Copyright (c) 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 8329190
* @summary Test that I/O operations on a closed network channel throw ClosedChannelException
* and not AsynchronousCloseException
* @run junit ClosedNetworkChannels
*/
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousCloseException;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.DatagramChannel;
import java.nio.channels.NotYetConnectedException;
import java.nio.channels.Pipe;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
class ClosedNetworkChannels {
/**
* An operation that does not return a result but may throw an exception.
*/
@FunctionalInterface
interface ThrowingRunnable {
void run() throws Exception;
}
/**
* Assert that the given operation throws ClosedChannelException.
*/
private void assertThrowsCCE(ThrowingRunnable op) throws Exception {
try {
op.run();
fail();
} catch (AsynchronousCloseException e) {
fail(e + " thrown");
} catch (ClosedChannelException e) {
// expected
}
}
/**
* Closes the given SocketChannel and checks that I/O ops throw ClosedChannelException.
*/
private void testSocketChannel(SocketChannel sc) throws Exception {
sc.close();
InetAddress lb = InetAddress.getLoopbackAddress();
SocketAddress target = new InetSocketAddress(lb, 7777); // any port will do
ByteBuffer bb = ByteBuffer.allocate(100);
ByteBuffer[] bufs = new ByteBuffer[] { bb };
assertThrowsCCE(() -> sc.connect(target));
assertThrowsCCE(() -> sc.finishConnect());
assertThrowsCCE(() -> sc.read(bb));
assertThrowsCCE(() -> sc.read(bufs));
assertThrowsCCE(() -> sc.read(bufs, 0, 1));
assertThrowsCCE(() -> sc.write(bb));
assertThrowsCCE(() -> sc.write(bufs));
assertThrowsCCE(() -> sc.write(bufs, 0, 1));
}
/**
* Test that I/O operations on a closed (but previously unconnected) SocketChannel
* throw ClosedChannelException.
*/
@Test
void testUnconnectedSocketChannel() throws Exception {
SocketChannel sc = SocketChannel.open();
testSocketChannel(sc);
}
/**
* Test that I/O operations on a closed (but previously connected) SocketChannel
* throw ClosedChannelException.
*/
@Test
void testConnectedSocketChannel() throws Exception {
try (ServerSocketChannel ssc = ServerSocketChannel.open()) {
ssc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
try (SocketChannel sc = SocketChannel.open(ssc.getLocalAddress());
SocketChannel peer = ssc.accept()) {
testSocketChannel(sc);
}
}
}
/**
* Test that the accept operation on a closed (but previously unbound) ServerSocketChannel
* throws ClosedChannelException.
*/
@Test
void testUnboundServerSocketChannel() throws Exception {
ServerSocketChannel ssc = ServerSocketChannel.open();
ssc.close();
assertThrowsCCE(() -> ssc.accept());
}
/**
* Test that the accept operation on a closed (but previously bound) ServerSocketChannel
* throws ClosedChannelException.
*/
@Test
void testBoundServerSocketChannel() throws Exception {
try (ServerSocketChannel ssc = ServerSocketChannel.open()) {
ssc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
ssc.close();
assertThrowsCCE(() -> ssc.accept());
}
}
/**
* Test that I/O operations on a closed Pipe.SourceChannel and Pipe.SinkChannel
* throw ClosedChannelException.
*/
@Test
void testSourceAndSinkChannels() throws Exception {
Pipe p = Pipe.open();
try (Pipe.SourceChannel source = p.source();
Pipe.SinkChannel sink = p.sink()) {
source.close();
sink.close();
ByteBuffer bb = ByteBuffer.allocate(100);
ByteBuffer[] bufs = new ByteBuffer[]{bb};
assertThrowsCCE(() -> source.read(bb));
assertThrowsCCE(() -> source.read(bufs));
assertThrowsCCE(() -> source.read(bufs, 0, 1));
assertThrowsCCE(() -> sink.write(bb));
assertThrowsCCE(() -> sink.write(bufs));
assertThrowsCCE(() -> sink.write(bufs, 0, 1));
}
}
/**
* Closes the given DatagramChannel and checks that I/O ops throw ClosedChannelException.
*/
private void testDatagramChannel(DatagramChannel dc) throws Exception {
dc.close();
InetAddress lb = InetAddress.getLoopbackAddress();
SocketAddress target = new InetSocketAddress(lb, 7777); // any port will do
ByteBuffer bb = ByteBuffer.allocate(100);
ByteBuffer[] bufs = new ByteBuffer[] { bb };
assertThrowsCCE(() -> dc.send(bb, target));
assertThrowsCCE(() -> dc.receive(bb));
assertThrowsCCE(() -> dc.read(bb));
assertThrowsCCE(() -> dc.read(bufs));
assertThrowsCCE(() -> dc.read(bufs, 0, 1));
assertThrowsCCE(() -> dc.write(bb));
assertThrowsCCE(() -> dc.write(bufs));
assertThrowsCCE(() -> dc.write(bufs, 0, 1));
}
/**
* Test that I/O operations on a closed (but previously unconnected) DatagramChannel
* throw ClosedChannelException.
*/
@Test
void testUnconnectedDatagramChannel() throws Exception {
DatagramChannel dc = DatagramChannel.open();
testDatagramChannel(dc);
}
/**
* Test that I/O operations on a closed (but previously connected) DatagramChannel
* throw ClosedChannelException.
*/
@Test
void testConnectedDatagramChannel() throws Exception {
try (DatagramChannel dc = DatagramChannel.open()) {
InetAddress lb = InetAddress.getLoopbackAddress();
dc.bind(new InetSocketAddress(lb, 0));
dc.connect(new InetSocketAddress(lb, 7777)); // any port will do
testDatagramChannel(dc);
}
}
}
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