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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.
*/
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.SocketException;
import java.net.StandardSocketOptions;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
import static org.junit.jupiter.api.Assertions.assertTrue;
/*
* @test
* @summary verifies that the APIs on java.net.ServerSocket throw expected exceptions
* when invoked on a closed ServerSocket
* @run junit ClosedServerSocketTest
*/
public class ClosedServerSocketTest {
private static final InetAddress loopback = InetAddress.getLoopbackAddress();
private static final InetSocketAddress loopbackEphemeral = new InetSocketAddress(loopback, 0);
/**
* Verifies that various operations that specify to throw an IOException on a
* closed ServerSocket, do indeed throw it.
*/
@Test
public void testIOExceptionThrown() throws Exception {
try (final ServerSocket ss = new ServerSocket()) {
// close and then invoke the operations on the ServerSocket
ss.close();
assertTrue(ss.isClosed(), "ServerSocket isn't closed");
assertThrows(IOException.class,
ss::accept,
"accept() when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> ss.bind(loopbackEphemeral),
"bind() when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> ss.bind(loopbackEphemeral, 10),
"bind(SocketAddress, int) when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> ss.getOption(StandardSocketOptions.SO_RCVBUF),
"getOption() when already closed didn't throw IOException");
assertThrows(IOException.class,
ss::getSoTimeout,
"getSoTimeout() when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> ss.setOption(StandardSocketOptions.SO_RCVBUF, 1024),
"setOption() when already closed didn't throw IOException");
}
}
/**
* Verifies that various operations that specify to throw a SocketOperation on a
* closed ServerSocket, do indeed throw it.
*/
@Test
public void testSocketExceptionThrown() throws Exception {
try (final ServerSocket ss = new ServerSocket()) {
// close and then invoke the operations on the ServerSocket
ss.close();
assertTrue(ss.isClosed(), "ServerSocket isn't closed");
assertThrowsExactly(SocketException.class,
ss::getReceiveBufferSize,
"getReceiveBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
ss::getReuseAddress,
"getReuseAddress() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> ss.setReceiveBufferSize(1024),
"setReceiveBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> ss.setReuseAddress(false),
"setReuseAddress() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> ss.setSoTimeout(1000),
"setSoTimeout() when already closed didn't throw SocketException");
}
}
/**
* Verifies that various operations that aren't expected to throw an exception on a
* closed ServerSocket, complete normally.
*/
@Test
public void testNoExceptionThrown() throws Exception {
try (final ServerSocket ss = new ServerSocket()) {
// close and then invoke the operations on the ServerSocket
ss.close();
assertTrue(ss.isClosed(), "ServerSocket isn't closed");
ss.getInetAddress();
ss.getLocalPort();
ss.getLocalSocketAddress();
ss.isBound();
ss.supportedOptions();
}
}
}
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