@Override
    protected void addHttp1Handlers(ChannelPipeline pipeline) {
        pipeline.addLast(
                HTTP_CODEC_HANDLER_NAME,
                new HttpServerCodec(MAX_INITIAL_LINE_LENGTH.get(), MAX_HEADER_SIZE.get(), MAX_CHUNK_SIZE.get(), false));
        pipeline.addLast(new HttpObjectAggregator(8192));
    }
Use {@link #PushChannelInitializer(String, ChannelConfig, ChannelConfig, ChannelGroup)} instead.
zuul-core/src/main/java/com/netflix/zuul/netty/server/push/PushChannelInitializer.java