
package com.lin.netty4.tcp;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldPrepender;
import org.apache.log4j.Logger;
public class TcpServer {
private static final Logger logger = Logger.getLogger(TcpServer.class);
private static final String IP = "127.0.0.1";
private static final int PORT = 9999;
/**用于分配处理业务线程的线程组个数 */
protected static final int BIZGROUPSIZE = Runtime.getRuntime().availableProcessors()*2; //默认
/** 业务出现线程大小*/
protected static final int BIZTHREADSIZE = 1000;
private static final EventLoopGroup bossGroup = new NioEventLoopGroup(BIZGROUPSIZE);
private static final EventLoopGroup workerGroup = new NioEventLoopGroup(BIZTHREADSIZE);
protected static void run() throws Exception {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup);
b.channel(NioServerSocketChannel.class);
b.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {