serverbootstrap.java

ServerBootstrap b = new ServerBootstrap();
b.group(acceptorGroup, handlerGroup)
        .channel(NioServerSocketChannel.class)
        .childHandler(new MySocketInitialiser())
        .option(ChannelOption.SO_BACKLOG, 5)
        .childOption(ChannelOption.SO_KEEPALIVE, true);

b.localAddress(port).bind().sync();
LOG.info("Started on port {}", port);