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Java example source code file (SocketRstTest.java)
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The SocketRstTest.java Java example source code
/*
* Copyright 2016 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.testsuite.transport.socket;
import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import org.junit.Test;
import java.io.IOException;
import java.util.Locale;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
public class SocketRstTest extends AbstractSocketTest {
protected void assertRstOnCloseException(IOException cause, Channel clientChannel) {
if (Locale.getDefault() == Locale.US || Locale.getDefault() == Locale.UK) {
assertTrue("actual message: " + cause.getMessage(),
cause.getMessage().contains("reset") || cause.getMessage().contains("closed"));
}
}
@Test(timeout = 3000)
public void testSoLingerZeroCausesOnlyRstOnClose() throws Throwable {
run();
}
public void testSoLingerZeroCausesOnlyRstOnClose(ServerBootstrap sb, Bootstrap cb) throws Throwable {
final AtomicReference<Channel> serverChannelRef = new AtomicReference();
final AtomicReference<Throwable> throwableRef = new AtomicReference();
final CountDownLatch latch = new CountDownLatch(1);
final CountDownLatch latch2 = new CountDownLatch(1);
// SO_LINGER=0 means that we must send ONLY a RST when closing (not a FIN + RST).
sb.childOption(ChannelOption.SO_LINGER, 0);
sb.childHandler(new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel ch) throws Exception {
serverChannelRef.compareAndSet(null, ch);
latch.countDown();
}
});
cb.handler(new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel ch) throws Exception {
ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
throwableRef.compareAndSet(null, cause);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) {
latch2.countDown();
}
});
}
});
Channel sc = sb.bind().sync().channel();
Channel cc = cb.connect(sc.localAddress()).sync().channel();
// Wait for the server to get setup.
latch.await();
// The server has SO_LINGER=0 and so it must send a RST when close is called.
serverChannelRef.get().close();
// Wait for the client to get channelInactive.
latch2.await();
// Verify the client received a RST.
Throwable cause = throwableRef.get();
assertTrue("actual [type, message]: [" + cause.getClass() + ", " + cause.getMessage() + "]",
cause instanceof IOException);
assertRstOnCloseException((IOException) cause, cc);
}
@Test(timeout = 3000)
public void testNoRstIfSoLingerOnClose() throws Throwable {
run();
}
public void testNoRstIfSoLingerOnClose(ServerBootstrap sb, Bootstrap cb) throws Throwable {
final AtomicReference<Channel> serverChannelRef = new AtomicReference();
final AtomicReference<Throwable> throwableRef = new AtomicReference();
final CountDownLatch latch = new CountDownLatch(1);
final CountDownLatch latch2 = new CountDownLatch(1);
sb.childHandler(new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel ch) throws Exception {
serverChannelRef.compareAndSet(null, ch);
latch.countDown();
}
});
cb.handler(new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel ch) throws Exception {
ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
throwableRef.compareAndSet(null, cause);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) {
latch2.countDown();
}
});
}
});
Channel sc = sb.bind().sync().channel();
cb.connect(sc.localAddress()).syncUninterruptibly();
// Wait for the server to get setup.
latch.await();
// The server has SO_LINGER=0 and so it must send a RST when close is called.
serverChannelRef.get().close();
// Wait for the client to get channelInactive.
latch2.await();
// Verify the client did not received a RST.
assertNull(throwableRef.get());
}
}
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