c4dbbe39c9
Motivation: We should just add `executor()` to the `ChannelOutboundInvoker` interface and override this method in `Channel` to return `EventLoop`. Modifications: - Add `executor()` method to `ChannelOutboundInvoker` - Let `Channel` override this method and return `EventLoop`. - Adjust all usages of `eventLoop()` - Add some default implementations Result: API cleanup
602 lines
26 KiB
Java
602 lines
26 KiB
Java
/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.testsuite.transport.socket;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufAllocator;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelConfig;
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import io.netty.channel.ChannelFutureListeners;
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import io.netty.channel.ChannelHandler;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.RecvByteBufAllocator;
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import io.netty.channel.SimpleChannelInboundHandler;
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import io.netty.channel.socket.ChannelInputShutdownEvent;
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import io.netty.channel.socket.ChannelInputShutdownReadComplete;
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import io.netty.channel.socket.ChannelOutputShutdownEvent;
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import io.netty.channel.socket.DuplexChannel;
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import io.netty.util.UncheckedBooleanSupplier;
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import io.netty.util.internal.PlatformDependent;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.TestInfo;
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import org.junit.jupiter.api.Timeout;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicReference;
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import static java.util.concurrent.TimeUnit.MILLISECONDS;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import static org.junit.jupiter.api.Assumptions.assumeFalse;
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public class SocketHalfClosedTest extends AbstractSocketTest {
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@Test
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@Timeout(value = 10000, unit = MILLISECONDS)
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public void testHalfClosureOnlyOneEventWhenAutoRead(TestInfo testInfo) throws Throwable {
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run(testInfo, this::testHalfClosureOnlyOneEventWhenAutoRead);
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}
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public void testHalfClosureOnlyOneEventWhenAutoRead(ServerBootstrap sb, Bootstrap cb) throws Throwable {
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Channel serverChannel = null;
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try {
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cb.option(ChannelOption.ALLOW_HALF_CLOSURE, true)
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.option(ChannelOption.AUTO_READ, true);
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sb.childHandler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) {
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ch.pipeline().addLast(new ChannelHandler() {
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@Override
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public void channelActive(ChannelHandlerContext ctx) {
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((DuplexChannel) ctx).shutdownOutput();
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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}
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});
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}
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});
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final AtomicInteger shutdownEventReceivedCounter = new AtomicInteger();
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final AtomicInteger shutdownReadCompleteEventReceivedCounter = new AtomicInteger();
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cb.handler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) {
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ch.pipeline().addLast(new ChannelHandler() {
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@Override
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public void userEventTriggered(final ChannelHandlerContext ctx, Object evt) {
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if (evt == ChannelInputShutdownEvent.INSTANCE) {
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shutdownEventReceivedCounter.incrementAndGet();
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} else if (evt == ChannelInputShutdownReadComplete.INSTANCE) {
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shutdownReadCompleteEventReceivedCounter.incrementAndGet();
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ctx.executor().schedule((Runnable) ctx::close, 100, MILLISECONDS);
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}
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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}
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});
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}
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});
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serverChannel = sb.bind().get();
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Channel clientChannel = cb.connect(serverChannel.localAddress()).get();
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clientChannel.closeFuture().await();
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assertEquals(1, shutdownEventReceivedCounter.get());
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assertEquals(1, shutdownReadCompleteEventReceivedCounter.get());
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} finally {
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if (serverChannel != null) {
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serverChannel.close().sync();
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}
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}
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}
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@Test
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public void testAllDataReadAfterHalfClosure(TestInfo testInfo) throws Throwable {
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run(testInfo, this::testAllDataReadAfterHalfClosure);
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}
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public void testAllDataReadAfterHalfClosure(ServerBootstrap sb, Bootstrap cb) throws Throwable {
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testAllDataReadAfterHalfClosure(true, sb, cb);
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testAllDataReadAfterHalfClosure(false, sb, cb);
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}
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private static void testAllDataReadAfterHalfClosure(final boolean autoRead,
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ServerBootstrap sb, Bootstrap cb) throws Throwable {
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final int totalServerBytesWritten = 1024 * 16;
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final int numReadsPerReadLoop = 2;
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final CountDownLatch serverInitializedLatch = new CountDownLatch(1);
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final CountDownLatch clientReadAllDataLatch = new CountDownLatch(1);
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final CountDownLatch clientHalfClosedLatch = new CountDownLatch(1);
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final AtomicInteger clientReadCompletes = new AtomicInteger();
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Channel serverChannel = null;
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Channel clientChannel = null;
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try {
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cb.option(ChannelOption.ALLOW_HALF_CLOSURE, true)
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.option(ChannelOption.AUTO_READ, autoRead)
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.option(ChannelOption.RCVBUF_ALLOCATOR, new TestNumReadsRecvByteBufAllocator(numReadsPerReadLoop));
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sb.childHandler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(new ChannelHandler() {
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@Override
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public void channelActive(ChannelHandlerContext ctx) throws Exception {
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ByteBuf buf = ctx.alloc().buffer(totalServerBytesWritten);
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buf.writerIndex(buf.capacity());
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ctx.writeAndFlush(buf).addListener((DuplexChannel) ctx.channel(), (c, f) ->
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c.shutdownOutput());
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serverInitializedLatch.countDown();
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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}
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});
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}
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});
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cb.handler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(new ChannelHandler() {
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private int bytesRead;
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) {
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ByteBuf buf = (ByteBuf) msg;
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bytesRead += buf.readableBytes();
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buf.release();
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}
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
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if (evt == ChannelInputShutdownEvent.INSTANCE) {
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clientHalfClosedLatch.countDown();
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} else if (evt == ChannelInputShutdownReadComplete.INSTANCE) {
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ctx.close();
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}
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}
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) {
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clientReadCompletes.incrementAndGet();
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if (bytesRead == totalServerBytesWritten) {
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clientReadAllDataLatch.countDown();
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}
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if (!autoRead) {
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ctx.read();
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}
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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}
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});
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}
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});
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serverChannel = sb.bind().get();
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clientChannel = cb.connect(serverChannel.localAddress()).get();
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clientChannel.read();
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serverInitializedLatch.await();
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clientReadAllDataLatch.await();
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clientHalfClosedLatch.await();
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assertTrue(totalServerBytesWritten / numReadsPerReadLoop + 10 > clientReadCompletes.get(),
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"too many read complete events: " + clientReadCompletes.get());
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} finally {
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if (clientChannel != null) {
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clientChannel.close().sync();
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}
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if (serverChannel != null) {
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serverChannel.close().sync();
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}
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}
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}
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@Test
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public void testAutoCloseFalseDoesShutdownOutput(TestInfo testInfo) throws Throwable {
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// This test only works on Linux / BSD / MacOS as we assume some semantics that are not true for Windows.
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assumeFalse(PlatformDependent.isWindows());
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run(testInfo, this::testAutoCloseFalseDoesShutdownOutput);
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}
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public void testAutoCloseFalseDoesShutdownOutput(ServerBootstrap sb, Bootstrap cb) throws Throwable {
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testAutoCloseFalseDoesShutdownOutput(false, false, sb, cb);
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testAutoCloseFalseDoesShutdownOutput(false, true, sb, cb);
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testAutoCloseFalseDoesShutdownOutput(true, false, sb, cb);
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testAutoCloseFalseDoesShutdownOutput(true, true, sb, cb);
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}
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private static void testAutoCloseFalseDoesShutdownOutput(boolean allowHalfClosed,
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final boolean clientIsLeader,
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ServerBootstrap sb,
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Bootstrap cb) throws Exception {
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final int expectedBytes = 100;
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final CountDownLatch serverReadExpectedLatch = new CountDownLatch(1);
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final CountDownLatch doneLatch = new CountDownLatch(1);
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final AtomicReference<Throwable> causeRef = new AtomicReference<>();
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Channel serverChannel = null;
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Channel clientChannel = null;
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try {
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cb.option(ChannelOption.ALLOW_HALF_CLOSURE, allowHalfClosed)
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.option(ChannelOption.AUTO_CLOSE, false)
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.option(ChannelOption.SO_LINGER, 0);
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sb.childOption(ChannelOption.ALLOW_HALF_CLOSURE, allowHalfClosed)
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.childOption(ChannelOption.AUTO_CLOSE, false)
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.childOption(ChannelOption.SO_LINGER, 0);
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final SimpleChannelInboundHandler<ByteBuf> leaderHandler = new AutoCloseFalseLeader(expectedBytes,
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serverReadExpectedLatch, doneLatch, causeRef);
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final SimpleChannelInboundHandler<ByteBuf> followerHandler = new AutoCloseFalseFollower(expectedBytes,
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serverReadExpectedLatch, doneLatch, causeRef);
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sb.childHandler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(clientIsLeader ? followerHandler :leaderHandler);
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}
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});
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cb.handler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(clientIsLeader ? leaderHandler : followerHandler);
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}
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});
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serverChannel = sb.bind().get();
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clientChannel = cb.connect(serverChannel.localAddress()).get();
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doneLatch.await();
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assertNull(causeRef.get());
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} finally {
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if (clientChannel != null) {
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clientChannel.close().sync();
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}
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if (serverChannel != null) {
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serverChannel.close().sync();
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}
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}
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}
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private static final class AutoCloseFalseFollower extends SimpleChannelInboundHandler<ByteBuf> {
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private final int expectedBytes;
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private final CountDownLatch followerCloseLatch;
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private final CountDownLatch doneLatch;
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private final AtomicReference<Throwable> causeRef;
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private int bytesRead;
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AutoCloseFalseFollower(int expectedBytes, CountDownLatch followerCloseLatch, CountDownLatch doneLatch,
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AtomicReference<Throwable> causeRef) {
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this.expectedBytes = expectedBytes;
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this.followerCloseLatch = followerCloseLatch;
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this.doneLatch = doneLatch;
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this.causeRef = causeRef;
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}
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@Override
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public void channelInactive(ChannelHandlerContext ctx) {
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checkPrematureClose();
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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checkPrematureClose();
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}
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@Override
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protected void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
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bytesRead += msg.readableBytes();
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if (bytesRead >= expectedBytes) {
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// We write a reply and immediately close our end of the socket.
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ByteBuf buf = ctx.alloc().buffer(expectedBytes);
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buf.writerIndex(buf.writerIndex() + expectedBytes);
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ctx.writeAndFlush(buf).addListener(ctx.channel(), (c, f) ->
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c.close().addListener(c, (channel, future) -> {
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// This is a bit racy but there is no better way how to handle this in Java11.
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// The problem is that on close() the underlying FD will not actually be closed directly
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// but the close will be done after the Selector did process all events. Because of
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// this we will need to give it a bit time to ensure the FD is actual closed before we
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// count down the latch and try to write.
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channel.executor().schedule(followerCloseLatch::countDown, 200, MILLISECONDS);
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}));
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}
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}
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private void checkPrematureClose() {
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if (bytesRead < expectedBytes) {
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causeRef.set(new IllegalStateException("follower premature close"));
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doneLatch.countDown();
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}
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}
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}
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private static final class AutoCloseFalseLeader extends SimpleChannelInboundHandler<ByteBuf> {
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private final int expectedBytes;
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private final CountDownLatch followerCloseLatch;
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private final CountDownLatch doneLatch;
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private final AtomicReference<Throwable> causeRef;
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private int bytesRead;
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private boolean seenOutputShutdown;
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AutoCloseFalseLeader(int expectedBytes, CountDownLatch followerCloseLatch, CountDownLatch doneLatch,
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AtomicReference<Throwable> causeRef) {
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this.expectedBytes = expectedBytes;
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this.followerCloseLatch = followerCloseLatch;
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this.doneLatch = doneLatch;
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this.causeRef = causeRef;
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}
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@Override
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public void channelActive(ChannelHandlerContext ctx) throws Exception {
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ByteBuf buf = ctx.alloc().buffer(expectedBytes);
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buf.writerIndex(buf.writerIndex() + expectedBytes);
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ctx.writeAndFlush(buf.retainedDuplicate());
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// We wait here to ensure that we write before we have a chance to process the outbound
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// shutdown event.
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followerCloseLatch.await();
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// This write should fail, but we should still be allowed to read the peer's data
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ctx.writeAndFlush(buf).addListener(future -> {
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if (future.cause() == null) {
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causeRef.set(new IllegalStateException("second write should have failed!"));
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doneLatch.countDown();
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}
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});
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}
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@Override
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protected void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
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bytesRead += msg.readableBytes();
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if (bytesRead >= expectedBytes) {
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if (!seenOutputShutdown) {
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causeRef.set(new IllegalStateException(
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ChannelOutputShutdownEvent.class.getSimpleName() + " event was not seen"));
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}
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doneLatch.countDown();
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}
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}
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
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if (evt instanceof ChannelOutputShutdownEvent) {
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seenOutputShutdown = true;
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}
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}
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@Override
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public void channelInactive(ChannelHandlerContext ctx) {
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checkPrematureClose();
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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checkPrematureClose();
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}
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private void checkPrematureClose() {
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if (bytesRead < expectedBytes || !seenOutputShutdown) {
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causeRef.set(new IllegalStateException("leader premature close"));
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doneLatch.countDown();
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}
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}
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}
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@Test
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public void testAllDataReadClosure(TestInfo testInfo) throws Throwable {
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run(testInfo, this::testAllDataReadClosure);
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}
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public void testAllDataReadClosure(ServerBootstrap sb, Bootstrap cb) throws Throwable {
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testAllDataReadClosure(true, false, sb, cb);
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testAllDataReadClosure(true, true, sb, cb);
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testAllDataReadClosure(false, false, sb, cb);
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testAllDataReadClosure(false, true, sb, cb);
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}
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private static void testAllDataReadClosure(final boolean autoRead, final boolean allowHalfClosed,
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ServerBootstrap sb, Bootstrap cb) throws Throwable {
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final int totalServerBytesWritten = 1024 * 16;
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final int numReadsPerReadLoop = 2;
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final CountDownLatch serverInitializedLatch = new CountDownLatch(1);
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final CountDownLatch clientReadAllDataLatch = new CountDownLatch(1);
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final CountDownLatch clientHalfClosedLatch = new CountDownLatch(1);
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final AtomicInteger clientReadCompletes = new AtomicInteger();
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Channel serverChannel = null;
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Channel clientChannel = null;
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try {
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cb.option(ChannelOption.ALLOW_HALF_CLOSURE, allowHalfClosed)
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.option(ChannelOption.AUTO_READ, autoRead)
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.option(ChannelOption.RCVBUF_ALLOCATOR, new TestNumReadsRecvByteBufAllocator(numReadsPerReadLoop));
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sb.childHandler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(new ChannelHandler() {
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@Override
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public void channelActive(ChannelHandlerContext ctx) throws Exception {
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ByteBuf buf = ctx.alloc().buffer(totalServerBytesWritten);
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buf.writerIndex(buf.capacity());
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ctx.writeAndFlush(buf).addListener(ctx.channel(), ChannelFutureListeners.CLOSE);
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serverInitializedLatch.countDown();
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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ctx.close();
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}
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});
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}
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});
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cb.handler(new ChannelInitializer<Channel>() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(new ChannelHandler() {
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private int bytesRead;
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) {
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ByteBuf buf = (ByteBuf) msg;
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bytesRead += buf.readableBytes();
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buf.release();
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}
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
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if (evt == ChannelInputShutdownEvent.INSTANCE && allowHalfClosed) {
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clientHalfClosedLatch.countDown();
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} else if (evt == ChannelInputShutdownReadComplete.INSTANCE) {
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ctx.close();
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}
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}
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@Override
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public void channelInactive(ChannelHandlerContext ctx) {
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if (!allowHalfClosed) {
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clientHalfClosedLatch.countDown();
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}
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}
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) {
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clientReadCompletes.incrementAndGet();
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if (bytesRead == totalServerBytesWritten) {
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clientReadAllDataLatch.countDown();
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}
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if (!autoRead) {
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ctx.read();
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}
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}
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@Override
|
|
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
|
|
ctx.close();
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
serverChannel = sb.bind().get();
|
|
clientChannel = cb.connect(serverChannel.localAddress()).get();
|
|
clientChannel.read();
|
|
|
|
serverInitializedLatch.await();
|
|
clientReadAllDataLatch.await();
|
|
clientHalfClosedLatch.await();
|
|
assertTrue(totalServerBytesWritten / numReadsPerReadLoop + 10 > clientReadCompletes.get(),
|
|
"too many read complete events: " + clientReadCompletes.get());
|
|
} finally {
|
|
if (clientChannel != null) {
|
|
clientChannel.close().sync();
|
|
}
|
|
if (serverChannel != null) {
|
|
serverChannel.close().sync();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Designed to read a single byte at a time to control the number of reads done at a fine granularity.
|
|
*/
|
|
private static final class TestNumReadsRecvByteBufAllocator implements RecvByteBufAllocator {
|
|
private final int numReads;
|
|
TestNumReadsRecvByteBufAllocator(int numReads) {
|
|
this.numReads = numReads;
|
|
}
|
|
|
|
@Override
|
|
public ExtendedHandle newHandle() {
|
|
return new ExtendedHandle() {
|
|
private int attemptedBytesRead;
|
|
private int lastBytesRead;
|
|
private int numMessagesRead;
|
|
@Override
|
|
public ByteBuf allocate(ByteBufAllocator alloc) {
|
|
return alloc.ioBuffer(guess(), guess());
|
|
}
|
|
|
|
@Override
|
|
public int guess() {
|
|
return 1; // only ever allocate buffers of size 1 to ensure the number of reads is controlled.
|
|
}
|
|
|
|
@Override
|
|
public void reset(ChannelConfig config) {
|
|
numMessagesRead = 0;
|
|
}
|
|
|
|
@Override
|
|
public void incMessagesRead(int numMessages) {
|
|
numMessagesRead += numMessages;
|
|
}
|
|
|
|
@Override
|
|
public void lastBytesRead(int bytes) {
|
|
lastBytesRead = bytes;
|
|
}
|
|
|
|
@Override
|
|
public int lastBytesRead() {
|
|
return lastBytesRead;
|
|
}
|
|
|
|
@Override
|
|
public void attemptedBytesRead(int bytes) {
|
|
attemptedBytesRead = bytes;
|
|
}
|
|
|
|
@Override
|
|
public int attemptedBytesRead() {
|
|
return attemptedBytesRead;
|
|
}
|
|
|
|
@Override
|
|
public boolean continueReading() {
|
|
return numMessagesRead < numReads;
|
|
}
|
|
|
|
@Override
|
|
public boolean continueReading(UncheckedBooleanSupplier maybeMoreDataSupplier) {
|
|
return continueReading() && maybeMoreDataSupplier.get();
|
|
}
|
|
|
|
@Override
|
|
public void readComplete() {
|
|
// Nothing needs to be done or adjusted after each read cycle is completed.
|
|
}
|
|
};
|
|
}
|
|
}
|
|
}
|