481 lines
15 KiB
Java
481 lines
15 KiB
Java
/*
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* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8279339
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* @run testng SocketChannelStreams
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* @summary Exercise InputStream/OutputStream returned by Channels.newXXXStream
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* when channel is a SocketChannel
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*/
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.Socket;
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import java.nio.channels.Channels;
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import java.nio.channels.IllegalBlockingModeException;
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import java.nio.channels.ServerSocketChannel;
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import java.nio.channels.SocketChannel;
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import java.util.Objects;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Future;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import org.testng.annotations.*;
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import static org.testng.Assert.*;
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@Test
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public class SocketChannelStreams {
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private ScheduledExecutorService executor;
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@BeforeClass()
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public void init() {
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executor = Executors.newSingleThreadScheduledExecutor();
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}
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@AfterClass
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public void finish() {
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executor.shutdown();
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}
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/**
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* Test read when bytes are available.
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*/
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public void testRead1() throws Exception {
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withConnection((sc, peer) -> {
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write(peer, 99);
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int n = Channels.newInputStream(sc).read();
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assertEquals(n, 99);
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});
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}
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/**
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* Test read blocking before bytes are available.
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*/
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public void testRead2() throws Exception {
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withConnection((sc, peer) -> {
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scheduleWrite(peer, 99, 1000);
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int n = Channels.newInputStream(sc).read();
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assertEquals(n, 99);
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});
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}
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/**
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* Test read after peer has closed connection.
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*/
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public void testRead3() throws Exception {
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withConnection((sc, peer) -> {
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peer.close();
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int n = Channels.newInputStream(sc).read();
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assertEquals(n, -1);
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});
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}
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/**
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* Test read blocking before peer closes connection.
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*/
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public void testRead4() throws Exception {
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withConnection((sc, peer) -> {
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scheduleClose(peer, 1000);
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int n = Channels.newInputStream(sc).read();
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assertEquals(n, -1);
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});
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}
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/**
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* Test async close of channel when thread blocked in read.
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*/
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public void testRead5() throws Exception {
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withConnection((sc, peer) -> {
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scheduleClose(sc, 2000);
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InputStream in = Channels.newInputStream(sc);
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expectThrows(IOException.class, () -> in.read());
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});
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}
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/**
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* Test async close of input stream, when thread blocked in read.
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*/
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public void testRead6() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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scheduleClose(in, 2000);
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expectThrows(IOException.class, () -> in.read());
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});
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}
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/**
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* Test interrupt status set before read.
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*/
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public void testRead7() throws Exception {
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withConnection((sc, peer) -> {
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Thread.currentThread().interrupt();
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try {
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InputStream in = Channels.newInputStream(sc);
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expectThrows(IOException.class, () -> in.read());
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} finally {
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Thread.interrupted(); // clear interrupt
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}
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assertFalse(sc.isOpen());
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});
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}
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/**
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* Test interrupt of thread blocked in read.
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*/
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public void testRead8() throws Exception {
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withConnection((sc, peer) -> {
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Future<?> interrupter = scheduleInterrupt(Thread.currentThread(), 2000);
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try {
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InputStream in = Channels.newInputStream(sc);
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expectThrows(IOException.class, () -> in.read());
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} finally {
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interrupter.cancel(true);
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Thread.interrupted(); // clear interrupt
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}
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assertFalse(sc.isOpen());
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});
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}
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/**
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* Test that read is untimed when SO_TIMEOUT is set on the Socket adaptor.
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*/
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public void testRead9() throws Exception {
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withConnection((sc, peer) -> {
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sc.socket().setSoTimeout(100);
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scheduleWrite(peer, 99, 2000);
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// read should block until bytes are available
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int b = Channels.newInputStream(sc).read();
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assertTrue(b == 99);
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});
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}
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/**
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* Test write.
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*/
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public void testWrite1() throws Exception {
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withConnection((sc, peer) -> {
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OutputStream out = Channels.newOutputStream(sc);
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out.write(99);
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int n = read(peer);
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assertEquals(n, 99);
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});
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}
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/**
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* Test async close of channel when thread blocked in write.
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*/
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public void testWrite2() throws Exception {
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withConnection((sc, peer) -> {
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scheduleClose(sc, 2000);
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expectThrows(IOException.class, () -> {
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OutputStream out = Channels.newOutputStream(sc);
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byte[] data = new byte[64*1000];
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while (true) {
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out.write(data);
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}
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});
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});
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}
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/**
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* Test async close of output stream when thread blocked in write.
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*/
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public void testWrite3() throws Exception {
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withConnection((sc, peer) -> {
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OutputStream out = Channels.newOutputStream(sc);
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scheduleClose(out, 2000);
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expectThrows(IOException.class, () -> {
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byte[] data = new byte[64*1000];
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while (true) {
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out.write(data);
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}
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});
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});
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}
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/**
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* Test interrupt status set before write.
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*/
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public void testWrite4() throws Exception {
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withConnection((sc, peer) -> {
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Thread.currentThread().interrupt();
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try {
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OutputStream out = Channels.newOutputStream(sc);
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expectThrows(IOException.class, () -> out.write(99));
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} finally {
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Thread.interrupted(); // clear interrupt
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}
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assertFalse(sc.isOpen());
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});
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}
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/**
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* Test interrupt of thread blocked in write.
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*/
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public void testWrite5() throws Exception {
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withConnection((sc, peer) -> {
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Future<?> interrupter = scheduleInterrupt(Thread.currentThread(), 2000);
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try {
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expectThrows(IOException.class, () -> {
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OutputStream out = Channels.newOutputStream(sc);
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byte[] data = new byte[64*1000];
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while (true) {
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out.write(data);
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}
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});
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} finally {
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interrupter.cancel(true);
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Thread.interrupted(); // clear interrupt
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}
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assertFalse(sc.isOpen());
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});
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}
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/**
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* Test read when another thread is blocked in write. The read should
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* complete immediately.
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*/
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public void testConcurrentReadWrite1() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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// block thread in write
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fork(() -> {
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var data = new byte[64*1024];
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for (;;) {
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out.write(data);
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}
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});
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Thread.sleep(1000); // give writer time to block
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// test read, should not be blocked by writer thread
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write(peer, 99);
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int n = in.read();
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assertEquals(n, 99);
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});
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}
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/**
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* Test read when another thread is blocked in write. The read should
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* block until bytes are available.
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*/
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public void testConcurrentReadWrite2() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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// block thread in write
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fork(() -> {
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var data = new byte[64*1024];
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for (;;) {
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out.write(data);
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}
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});
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Thread.sleep(1000); // give writer time to block
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// test read, should not be blocked by writer thread
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scheduleWrite(peer, 99, 500);
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int n = in.read();
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assertEquals(n, 99);
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});
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}
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/**
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* Test writing when another thread is blocked in read.
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*/
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public void testConcurrentReadWrite3() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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// block thread in read
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fork(() -> {
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in.read();
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});
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Thread.sleep(100); // give reader time to block
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// test write, should not be blocked by reader thread
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out.write(99);
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int n = read(peer);
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assertEquals(n, 99);
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});
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}
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/**
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* Test read/write when channel configured non-blocking.
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*/
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public void testIllegalBlockingMode() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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sc.configureBlocking(false);
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expectThrows(IllegalBlockingModeException.class, () -> in.read());
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expectThrows(IllegalBlockingModeException.class, () -> out.write(99));
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});
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}
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/**
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* Test NullPointerException.
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*/
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public void testNullPointerException() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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expectThrows(NullPointerException.class, () -> in.read(null));
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expectThrows(NullPointerException.class, () -> in.read(null, 0, 0));
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expectThrows(NullPointerException.class, () -> out.write(null));
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expectThrows(NullPointerException.class, () -> out.write(null, 0, 0));
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});
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}
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/**
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* Test IndexOutOfBoundsException.
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*/
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public void testIndexOutOfBoundsException() throws Exception {
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withConnection((sc, peer) -> {
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InputStream in = Channels.newInputStream(sc);
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OutputStream out = Channels.newOutputStream(sc);
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byte[] ba = new byte[100];
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expectThrows(IndexOutOfBoundsException.class, () -> in.read(ba, -1, 1));
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expectThrows(IndexOutOfBoundsException.class, () -> in.read(ba, 0, -1));
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expectThrows(IndexOutOfBoundsException.class, () -> in.read(ba, 0, 1000));
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expectThrows(IndexOutOfBoundsException.class, () -> in.read(ba, 1, 100));
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expectThrows(IndexOutOfBoundsException.class, () -> out.write(ba, -1, 1));
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expectThrows(IndexOutOfBoundsException.class, () -> out.write(ba, 0, -1));
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expectThrows(IndexOutOfBoundsException.class, () -> out.write(ba, 0, 1000));
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expectThrows(IndexOutOfBoundsException.class, () -> out.write(ba, 1, 100));
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});
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}
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// -- test infrastructure --
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private interface ThrowingTask {
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void run() throws Exception;
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}
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private interface ThrowingBiConsumer<T, U> {
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void accept(T t, U u) throws Exception;
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}
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/**
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* Invokes the consumer with a connected pair of socket channels.
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*/
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private static void withConnection(ThrowingBiConsumer<SocketChannel, SocketChannel> consumer)
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throws Exception
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{
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var loopback = InetAddress.getLoopbackAddress();
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try (ServerSocketChannel listener = ServerSocketChannel.open()) {
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listener.bind(new InetSocketAddress(loopback, 0));
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try (SocketChannel sc = SocketChannel.open(listener.getLocalAddress())) {
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try (SocketChannel peer = listener.accept()) {
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consumer.accept(sc, peer);
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}
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}
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}
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}
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/**
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* Forks a thread to execute the given task.
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*/
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private Future<?> fork(ThrowingTask task) {
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ExecutorService pool = Executors.newFixedThreadPool(1);
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try {
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return pool.submit(() -> {
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task.run();
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return null;
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});
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} finally {
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pool.shutdown();
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}
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}
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/**
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* Read a byte from the given socket channel.
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*/
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private int read(SocketChannel sc) throws IOException {
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return sc.socket().getInputStream().read();
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}
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/**
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* Write a byte to the given socket channel.
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*/
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private void write(SocketChannel sc, int b) throws IOException {
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sc.socket().getOutputStream().write(b);
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}
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/**
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* Writes the given data to the socket channel after a delay.
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*/
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private Future<?> scheduleWrite(SocketChannel sc, byte[] data, long delay) {
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return schedule(() -> {
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try {
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sc.socket().getOutputStream().write(data);
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} catch (IOException ioe) { }
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}, delay);
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}
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/**
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* Writes a byte to the socket channel after a delay.
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*/
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private Future<?> scheduleWrite(SocketChannel sc, int b, long delay) {
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return scheduleWrite(sc, new byte[] { (byte)b }, delay);
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}
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/**
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* Closes the given object after a delay.
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*/
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private Future<?> scheduleClose(Closeable c, long delay) {
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return schedule(() -> {
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try {
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c.close();
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} catch (IOException ioe) { }
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}, delay);
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}
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/**
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* Interrupts the given Thread after a delay.
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*/
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private Future<?> scheduleInterrupt(Thread t, long delay) {
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return schedule(() -> t.interrupt(), delay);
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}
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/**
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* Schedules the given task to run after a delay.
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*/
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private Future<?> schedule(Runnable task, long delay) {
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return executor.schedule(task, delay, TimeUnit.MILLISECONDS);
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}
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}
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