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package com.github.javaclub.mq.common.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;


public class NettyServer {
	
	private int port;
	private ChannelPipelineFactory channelPipelineFactory;

	public NettyServer(int port, ChannelPipelineFactory channelPipelineFactory) {
		this.port = port;
		this.channelPipelineFactory = channelPipelineFactory;
	}

	public void start() throws InterruptedException {
		EventLoopGroup bossGroup = new NioEventLoopGroup();
		EventLoopGroup workerGroup = new NioEventLoopGroup();
		ServerBootstrap b = new ServerBootstrap();
		b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer() {
			@Override
			public void initChannel(SocketChannel ch) throws Exception {
				if (channelPipelineFactory != null) {
					channelPipelineFactory.initChannelPipeline(ch.pipeline());
				}
			}
		}).option(ChannelOption.SO_BACKLOG, 128)
		.childOption(ChannelOption.SO_KEEPALIVE, true)
		.childOption(ChannelOption.TCP_NODELAY, true);

		// Bind and start to accept incoming connections.
		b.bind(port).sync();
	}

}