Netty实现Web Socket

原文链接：https://www.dubby.cn/detail.html?id=9104

获取代码 https://github.com/dubby1994/netty-study/tree/master

1.依赖

 
     io.netty
     netty-all
     4.1.28.Final
 

2.实现

WebSocketServer.java:

public final class WebSocketServer {
    static final int PORT = 8080;
    public static void main(String[] args) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup)
             .channel(NioServerSocketChannel.class)
             .childHandler(new WebSocketServerInitializer());
            Channel ch = b.bind(PORT).sync().channel();
            ch.closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }
}

WebSocketServerInitializer.java:

public class WebSocketServerInitializer extends ChannelInitializer {
    @Override
    public void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();
        pipeline.addLast(new HttpServerCodec());
        pipeline.addLast(new HttpObjectAggregator(65536));
        pipeline.addLast(new WebSocketServerHandler());
    }
}

WebSocketServerHandler.java:

public class WebSocketServerHandler extends SimpleChannelInboundHandler