EchoClient
/*
* Copyright 2012 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:
*
* https://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 com.netty.threadPoolHandler;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
/**
* Sends one message when a connection is open and echoes back any received
* data to the server. Simply put, the echo client initiates the ping-pong
* traffic between the echo client and server by sending the first message to
* the server.
*/
public final class EchoClient {
static final boolean SSL = System.getProperty("ssl") != null;
static final String HOST = System.getProperty("host", "127.0.0.1");
static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
static final int SIZE = Integer.parseInt(System.getProperty("size", "256"));
public static void main(String[] args) throws Exception {
final SslContext sslCtx;
if (SSL) {
sslCtx = SslContextBuilder.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE).build();
} else {
sslCtx = null;
}
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap b = new Bootstrap();
b.group(group)
.channel(NioSocketChannel.class)
.option(ChannelOption.TCP_NODELAY, true)
.handler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline p = ch.pipeline();
if (sslCtx != null) {
p.addLast(sslCtx.newHandler(ch.alloc(), HOST, PORT));
}
p.addLast(new EchoClientHandler());
}
});
ChannelFuture f = b.connect(HOST, PORT).sync();
f.channel().closeFuture().sync();
} finally {
group.shutdownGracefully();
}
}
}
EchoClientHandler
/*
* Copyright 2012 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:
*
* https://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 com.netty.threadPoolHandler;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
import java.nio.charset.Charset;
/**
* Handler implementation for the echo client. It initiates the ping-pong
* traffic between the echo client and server by sending the first message to
* the server.
*/
public class EchoClientHandler extends ChannelInboundHandlerAdapter {
private final ByteBuf firstMessage;
public EchoClientHandler() {
firstMessage = Unpooled.buffer(EchoClient.SIZE);
for (int i = 0; i < firstMessage.capacity(); i++) {
firstMessage.writeByte((byte) i);
}
}
@Override
public void channelActive(ChannelHandlerContext ctx) {
ctx.writeAndFlush(Unpooled.copiedBuffer("你好，我是客户端", CharsetUtil.UTF_8));
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
ByteBuf byteBuf = (ByteBuf) msg;
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(bytes);
String s = new String(bytes, Charset.forName("utf-8"));
System.out.println("客户端接收到：" + s);
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}
EchoServer
/*
* Copyright 2012 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:
*
* https://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 com.netty.threadPoolHandler;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.SelfSignedCertificate;
/**
* Echoes back any received data from a client.
*/
public final class EchoServer {
static final boolean SSL = System.getProperty("ssl") != null;
static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
public static void main(String[] args) throws Exception {
// Configure SSL.
final SslContext sslCtx;
if (SSL) {
SelfSignedCertificate ssc = new SelfSignedCertificate();
sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
} else {
sslCtx = null;
}
EventLoopGroup bossGroup = new NioEventLoopGroup(1);
EventLoopGroup workerGroup = new NioEventLoopGroup();
final EchoServerHandler serverHandler = new EchoServerHandler();
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.option(ChannelOption.SO_BACKLOG, 100)
.handler(new LoggingHandler(LogLevel.INFO))
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline p = ch.pipeline();
if (sslCtx != null) {
p.addLast(sslCtx.newHandler(ch.alloc()));
}
//p.addLast(new LoggingHandler(LogLevel.INFO));
p.addLast(serverHandler);
}
});
ChannelFuture f = b.bind(PORT).sync();
f.channel().closeFuture().sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
}
EchoServerHandler
/*
* Copyright 2012 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:
*
* https://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 com.netty.threadPoolHandler;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
import io.netty.util.concurrent.DefaultEventExecutorGroup;
import io.netty.util.concurrent.EventExecutorGroup;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.Callable;
/**
* Handler implementation for the echo server.
*/
@Sharable
public class EchoServerHandler extends ChannelInboundHandlerAdapter {
SimpleDateFormat date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//group就是线程池，此处建立了16个线程
static final EventExecutorGroup group = new DefaultEventExecutorGroup(16);
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
System.out.println(date.format(new Date()) +" EchoServerHandler 线程：" + Thread.currentThread().getName());
//将任务提交到group线程池
group.submit(new Callable<Object>() {
@Override
public Object call() throws Exception {
//接收客户端消息
ByteBuf byteBuf = (ByteBuf) msg;
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(bytes);
String s = new String(bytes, Charset.forName("utf-8"));
Thread.sleep(5 * 1000);
System.out.println(date.format(new Date()) +"group.submit call 线程池：" + Thread.currentThread().getName());
ctx.writeAndFlush(Unpooled.copiedBuffer(date.format(new Date()) +" 你好，我是服务端", CharsetUtil.UTF_8));
return null;
}
});
group.submit(new Callable<Object>() {
@Override
public Object call() throws Exception {
//接收客户端消息
ByteBuf byteBuf = (ByteBuf) msg;
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(bytes);
String s = new String(bytes, Charset.forName("utf-8"));
Thread.sleep(5 * 1000);
System.out.println(date.format(new Date()) +"group.submit call 线程池2：" + Thread.currentThread().getName());
ctx.writeAndFlush(Unpooled.copiedBuffer(date.format(new Date()) +" 你好，我是服务端", CharsetUtil.UTF_8));
return null;
}
});
group.submit(new Callable<Object>() {
@Override
public Object call() throws Exception {
//接收客户端消息
ByteBuf byteBuf = (ByteBuf) msg;
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(bytes);
String s = new String(bytes, Charset.forName("utf-8"));
Thread.sleep(5 * 1000);
System.out.println(date.format(new Date()) +"group.submit call 线程池3：" + Thread.currentThread().getName());
ctx.writeAndFlush(Unpooled.copiedBuffer(date.format(new Date()) +" 你好，我是服务端", CharsetUtil.UTF_8));
return null;
}
});
System.out.println("继续");
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}
