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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 = future -> {
100 if (!future.isSuccess()) {
101 clientDonePromise.tryFailure(future.cause());
102 }
103 };
104
105 Channel sc = sb.bind().sync().channel();
106 for (int i = 0; i < numChannels; i++) {
107 cb.connect(sc.localAddress()).addListener(listener);
108 }
109
110 clientDonePromise.sync();
111 serverDonePromise.sync();
112 sc.close().sync();
113
114 if (globalException.get() != null && !(globalException.get() instanceof IOException)) {
115 throw globalException.get();
116 }
117 }
118
119 static class ReuseFdHandler extends ChannelInboundHandlerAdapter {
120 private static final String EXPECTED_PAYLOAD = "payload";
121
122 private final Promise<Void> donePromise;
123 private final AtomicInteger remaining;
124 private final boolean client;
125 volatile Channel channel;
126 final AtomicReference<Throwable> globalException;
127 final AtomicReference<Throwable> exception = new AtomicReference<Throwable>();
128 final StringBuilder received = new StringBuilder();
129
130 ReuseFdHandler(
131 boolean client,
132 AtomicReference<Throwable> globalException,
133 AtomicInteger remaining,
134 Promise<Void> donePromise) {
135 this.client = client;
136 this.globalException = globalException;
137 this.remaining = remaining;
138 this.donePromise = donePromise;
139 }
140
141 @Override
142 public void channelActive(ChannelHandlerContext ctx) {
143 channel = ctx.channel();
144 if (client) {
145 ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII))
146 .addListener(f -> {
147 if (!f.isSuccess()) {
148 donePromise.tryFailure(f.cause());
149 }
150 });
151 }
152 }
153
154 @Override
155 public void channelRead(ChannelHandlerContext ctx, Object msg) {
156 if (msg instanceof ByteBuf) {
157 ByteBuf buf = (ByteBuf) msg;
158 received.append(buf.toString(CharsetUtil.US_ASCII));
159 buf.release();
160
161 if (received.toString().equals(EXPECTED_PAYLOAD)) {
162 if (client) {
163 ctx.close();
164 } else {
165 ctx.writeAndFlush(Unpooled.copiedBuffer(EXPECTED_PAYLOAD, CharsetUtil.US_ASCII))
166 .addListener(f -> {
167 if (!f.isSuccess()) {
168 donePromise.tryFailure(f.cause());
169 }
170 });
171 }
172 }
173 }
174 }
175
176 @Override
177 public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
178 if (exception.compareAndSet(null, cause)) {
179 donePromise.tryFailure(new IllegalStateException("exceptionCaught: " + ctx.channel(), cause));
180 ctx.close();
181 }
182 globalException.compareAndSet(null, cause);
183 }
184
185 @Override
186 public void channelInactive(ChannelHandlerContext ctx) {
187 if (remaining.decrementAndGet() == 0) {
188 if (received.toString().equals(EXPECTED_PAYLOAD)) {
189 donePromise.setSuccess(null);
190 } else {
191 donePromise.tryFailure(new Exception("Unexpected payload:" + received));
192 }
193 }
194 }
195 }
196 }