android Netty发送Http和Socket请求收不到服务器反馈的问题

Question

我在Android 和服务器都是用的Netty框架，原来采用的都是socket通讯，现在我需要增加Http请求。参考了网上一片博文后服务端可以同时处理socket和http通讯，浏览器和socket测试过 链接：Netty如何实现同一个端口接收TCP和HTTP请求 https://my.oschina.net/succy/blog/4724766

测试结果

现在遇到问题是android 端收不到 socket和http通讯返回的数据；并且多次请求后还会报错：
rejectedExecution: Failed to submit a listener notification task. Event loop shut down?
android端netty配置如下：

EventLoopGroup loopGroup = new NioEventLoopGroup();
        try {
            Bootstrap bootstrap = new Bootstrap();
            bootstrap.group(loopGroup).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    //.option(ChannelOption.SO_BACKLOG, 512)
                    .option(ChannelOption.RCVBUF_ALLOCATOR, AdaptiveRecvByteBufAllocator.DEFAULT)
                    .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 30000)
                    .remoteAddress(new InetSocketAddress(HOST, PORT))
                    .handler(new ChannelInitializer<SocketChannel>() {

                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                           // ch.pipeline().addLast(new StringEncoder(Charset.forName("GBK")));
                            ch.pipeline().addLast(new HttpRequestEncoder());
                            ch.pipeline().addLast(new HttpResponseDecoder());
                           // ch.pipeline().addLast(new ByteArrayEncoder());
                            ch.pipeline().addLast(new PortUnificationServerHandler());
                        }
                    });

            ChannelFuture future = bootstrap.connect().sync();
            future.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            LogUtils.e(TAG, e.getMessage());
            e.printStackTrace();

        } finally {
            try {
                loopGroup.shutdownGracefully().sync();
            } catch (InterruptedException e) {
                LogUtils.e(TAG, e.getMessage());
                e.printStackTrace();
            }
        }

PortUnificationServerHandler这个类和服务端基本一致，见上面链接中博文，我觉得客户端这样配置不对，但不知道怎么配置Netty客户端才能兼容发送Socket和Http请求。在 channelActive 等函数中都有打上日志但没有响应。