ip过滤

同样getty已经提供ip过滤插件IpFilterRuleHandler，只需注入到责任链即可方面的对连接的客户端ip进行过滤处理，该处理器只对服务器端有效

  AioServerStarter server = new AioServerStarter(8888);
        server.channelInitializer(new ChannelInitializer() {
            @Override
            public void initChannel(AioChannel channel) throws Exception {
                //获取责任链对象
                DefaultChannelPipeline defaultChannelPipeline = channel.getDefaultChannelPipeline();
                //需要过滤的ip起始段，可添加多个
                IpRange ir = new IpRange("192.168.1.100", "192.168.1.110");
                IpRange ir2 = new IpRange("192.168.1.110", "192.168.1.120");
                List<IpRange> list = new ArrayList<>();
                list.add(ir);
                list.add(ir2);
                //注入ip过滤器，IpFilterRuleType.ACCEPT表示接受，IpFilterRuleType.REJECT 表示拒绝
                //顾名思义就是运营上面配置的ip段连接，配置REJECT则拒绝连接
                defaultChannelPipeline.addLast(new IpFilterRuleHandler(list,IpFilterRuleType.ACCEPT));
                //添加 分隔符字符串处理器  按 "\r\n\" 进行消息分割
                defaultChannelPipeline.addLast(new DelimiterFrameDecoder(DelimiterFrameDecoder.lineDelimiter));
                //添加字符串解码器
                defaultChannelPipeline.addLast(new StringDecoder());
                //添加自定义的简单消息处理器
                defaultChannelPipeline.addLast(new SimpleHandler());
            }
        }).start();