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16 package io.netty.testsuite.transport.socket;
17
18 import io.netty.bootstrap.Bootstrap;
19 import io.netty.bootstrap.ServerBootstrap;
20 import io.netty.buffer.ByteBuf;
21 import io.netty.buffer.Unpooled;
22 import io.netty.channel.Channel;
23 import io.netty.channel.ChannelFuture;
24 import io.netty.channel.ChannelFutureListener;
25 import io.netty.channel.ChannelHandlerContext;
26 import io.netty.channel.ChannelInboundHandlerAdapter;
27 import io.netty.channel.ChannelInitializer;
28 import io.netty.channel.ChannelOption;
29 import io.netty.testsuite.transport.TestsuitePermutation;
30 import io.netty.util.CharsetUtil;
31 import io.netty.util.concurrent.ImmediateEventExecutor;
32 import io.netty.util.concurrent.Promise;
33 import org.junit.jupiter.api.Test;
34 import org.junit.jupiter.api.TestInfo;
35 import org.junit.jupiter.api.Timeout;
36
37 import java.io.IOException;
38 import java.net.SocketAddress;
39 import java.util.List;
40 import java.util.concurrent.TimeUnit;
41 import java.util.concurrent.atomic.AtomicInteger;
42 import java.util.concurrent.atomic.AtomicReference;
43
44 public abstract class AbstractSocketReuseFdTest extends AbstractSocketTest {
45 @Override
46 protected abstract SocketAddress newSocketAddress();
47
48 @Override
49 protected abstract List<TestsuitePermutation.BootstrapComboFactory<ServerBootstrap, Bootstrap>> newFactories();
50
51 @Test
52 @Timeout(value = 60000, unit = TimeUnit.MILLISECONDS)
53 public void testReuseFd(TestInfo testInfo) throws Throwable {
54 run(testInfo, new Runner<ServerBootstrap, Bootstrap>() {
55 @Override
56 public void run(ServerBootstrap serverBootstrap, Bootstrap bootstrap) throws Throwable {
57 testReuseFd(serverBootstrap, bootstrap);
58 }
59 });
60 }
61
62 public void testReuseFd(ServerBootstrap sb, Bootstrap cb) throws Throwable {
63 sb.childOption(ChannelOption.AUTO_READ, true);
64 cb.option(ChannelOption.AUTO_READ, true);
65
66
67
68 int numChannels = 100;
69 final AtomicReference<Throwable> globalException = new AtomicReference<Throwable>();
70 final AtomicInteger serverRemaining = new AtomicInteger(numChannels);
71 final AtomicInteger clientRemaining = new AtomicInteger(numChannels);
72 final Promise<Void> serverDonePromise = ImmediateEventExecutor.INSTANCE.newPromise();
73 final Promise<Void> clientDonePromise = ImmediateEventExecutor.INSTANCE.newPromise();
74
75 sb.childHandler(new ChannelInitializer<Channel>() {
76 @Override
77 public void initChannel(Channel sch) {
78 ReuseFdHandler sh = new ReuseFdHandler(
79 false,
80 globalException,
81 serverRemaining,
82 serverDonePromise);
83 sch.pipeline().addLast("handler", sh);
84 }
85 });
86
87 cb.handler(new ChannelInitializer<Channel>() {
88 @Override
89 public void initChannel(Channel sch) {
90 ReuseFdHandler ch = new ReuseFdHandler(
91 true,
92 globalException,
93 clientRemaining,
94 clientDonePromise);
95 sch.pipeline().addLast("handler", ch);
96 }
97 });
98
99 ChannelFutureListener listener = new ChannelFutureListener() {
100 @Override
101 public void operationComplete(ChannelFuture future) {
102 if (!future.isSuccess()) {
103 clientDonePromise.tryFailure(future.cause());
104 }
105 }
106 };
107
108 Channel sc = sb.bind().sync().channel();
109 for (int i = 0; i < numChannels; i++) {
110 cb.connect(sc.localAddress()).addListener(listener);
111 }
112
113 clientDonePromise.sync();
114 serverDonePromise.sync();
115 sc.close().sync();
116
117 if (globalException.get() != null && !(globalException.get() instanceof IOException)) {
118 throw globalException.get();
119 }
120 }
121
122 static class ReuseFdHandler extends ChannelInboundHandlerAdapter {
123 private static final String EXPECTED_PAYLOAD = "payload";
124
125 private final Promise<Void> donePromise;
126 private final AtomicInteger remaining;
127 private final boolean client;
128 volatile Channel channel;
129 final AtomicReference<Throwable> globalException;
130 final AtomicReference<Throwable> exception = new AtomicReference<Throwable>();
131 final StringBuilder received = new StringBuilder();
132
133 ReuseFdHandler(
134 boolean client,
135 AtomicReference<Throwable> globalException,
136 AtomicInteger remaining,
137 Promise<Void> donePromise) {
138 this.client = client;
139 this.globalException = globalException;
140 this.remaining = remaining;
141 this.donePromise = donePromise;
142 }
143
144 @Override
145 public void channelActive(ChannelHandlerContext ctx) {
146 channel = ctx.channel();
147 if (client) {
148 ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII));
149 }
150 }
151
152 @Override
153 public void channelRead(ChannelHandlerContext ctx, Object msg) {
154 if (msg instanceof ByteBuf) {
155 ByteBuf buf = (ByteBuf) msg;
156 received.append(buf.toString(CharsetUtil.US_ASCII));
157 buf.release();
158
159 if (received.toString().equals(EXPECTED_PAYLOAD)) {
160 if (client) {
161 ctx.close();
162 } else {
163 ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII));
164 }
165 }
166 }
167 }
168
169 @Override
170 public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
171 if (exception.compareAndSet(null, cause)) {
172 donePromise.tryFailure(new IllegalStateException("exceptionCaught: " + ctx.channel(), cause));
173 ctx.close();
174 }
175 globalException.compareAndSet(null, cause);
176 }
177
178 @Override
179 public void channelInactive(ChannelHandlerContext ctx) {
180 if (remaining.decrementAndGet() == 0) {
181 if (received.toString().equals(EXPECTED_PAYLOAD)) {
182 donePromise.setSuccess(null);
183 } else {
184 donePromise.tryFailure(new Exception("Unexpected payload:" + received));
185 }
186 }
187 }
188 }
189 }