181 lines
6.7 KiB
Java
181 lines
6.7 KiB
Java
/*
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* Copyright 2019 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.Unpooled;
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import io.netty.channel.Channel;
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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.testsuite.transport.TestsuitePermutation;
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import io.netty.util.CharsetUtil;
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import io.netty.util.concurrent.FutureListener;
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import io.netty.util.concurrent.ImmediateEventExecutor;
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import io.netty.util.concurrent.Promise;
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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.io.IOException;
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import java.net.SocketAddress;
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import java.util.List;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicReference;
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public abstract class AbstractSocketReuseFdTest extends AbstractSocketTest {
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@Override
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protected abstract SocketAddress newSocketAddress();
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@Override
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protected abstract List<TestsuitePermutation.BootstrapComboFactory<ServerBootstrap, Bootstrap>> newFactories();
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@Test
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@Timeout(value = 60000, unit = TimeUnit.MILLISECONDS)
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public void testReuseFd(TestInfo testInfo) throws Throwable {
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run(testInfo, this::testReuseFd);
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}
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public void testReuseFd(ServerBootstrap sb, Bootstrap cb) throws Throwable {
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sb.childOption(ChannelOption.AUTO_READ, true);
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cb.option(ChannelOption.AUTO_READ, true);
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// Use a number which will typically not exceed /proc/sys/net/core/somaxconn (which is 128 on linux by default
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// often).
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int numChannels = 100;
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final AtomicReference<Throwable> globalException = new AtomicReference<Throwable>();
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final AtomicInteger serverRemaining = new AtomicInteger(numChannels);
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final AtomicInteger clientRemaining = new AtomicInteger(numChannels);
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final Promise<Void> serverDonePromise = ImmediateEventExecutor.INSTANCE.newPromise();
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final Promise<Void> clientDonePromise = ImmediateEventExecutor.INSTANCE.newPromise();
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sb.childHandler(new ChannelInitializer<Channel>() {
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@Override
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public void initChannel(Channel sch) {
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ReuseFdHandler sh = new ReuseFdHandler(
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false,
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globalException,
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serverRemaining,
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serverDonePromise);
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sch.pipeline().addLast("handler", sh);
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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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public void initChannel(Channel sch) {
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ReuseFdHandler ch = new ReuseFdHandler(
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true,
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globalException,
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clientRemaining,
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clientDonePromise);
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sch.pipeline().addLast("handler", ch);
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}
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});
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FutureListener<Channel> listener = future -> {
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if (future.isFailed()) {
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clientDonePromise.tryFailure(future.cause());
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}
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};
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Channel sc = sb.bind().get();
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for (int i = 0; i < numChannels; i++) {
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cb.connect(sc.localAddress()).addListener(listener);
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}
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clientDonePromise.asFuture().sync();
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serverDonePromise.asFuture().sync();
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sc.close().sync();
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if (globalException.get() != null && !(globalException.get() instanceof IOException)) {
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throw globalException.get();
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}
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}
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static class ReuseFdHandler implements ChannelHandler {
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private static final String EXPECTED_PAYLOAD = "payload";
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private final Promise<Void> donePromise;
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private final AtomicInteger remaining;
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private final boolean client;
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volatile Channel channel;
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final AtomicReference<Throwable> globalException;
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final AtomicReference<Throwable> exception = new AtomicReference<Throwable>();
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final StringBuilder received = new StringBuilder();
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ReuseFdHandler(
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boolean client,
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AtomicReference<Throwable> globalException,
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AtomicInteger remaining,
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Promise<Void> donePromise) {
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this.client = client;
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this.globalException = globalException;
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this.remaining = remaining;
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this.donePromise = donePromise;
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}
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@Override
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public void channelActive(ChannelHandlerContext ctx) {
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channel = ctx.channel();
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if (client) {
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ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII));
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}
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}
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) {
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if (msg instanceof ByteBuf) {
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ByteBuf buf = (ByteBuf) msg;
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received.append(buf.toString(CharsetUtil.US_ASCII));
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buf.release();
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if (received.toString().equals(EXPECTED_PAYLOAD)) {
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if (client) {
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ctx.close();
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} else {
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ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII));
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}
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}
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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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if (exception.compareAndSet(null, cause)) {
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donePromise.tryFailure(new IllegalStateException("exceptionCaught: " + ctx.channel(), cause));
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ctx.close();
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}
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globalException.compareAndSet(null, cause);
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}
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@Override
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public void channelInactive(ChannelHandlerContext ctx) {
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if (remaining.decrementAndGet() == 0) {
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if (received.toString().equals(EXPECTED_PAYLOAD)) {
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donePromise.setSuccess(null);
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} else {
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donePromise.tryFailure(new Exception("Unexpected payload:" + received));
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}
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}
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}
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}
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}
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