问Netty 4 HttpContentCompressor文件区域

EN

        ChannelFuture flushFuture;
        if (context.pipeline().get(SslHandler.class) == null) {
            // SSL not enabled - can use zero-copy file transfer.
            context.write(new DefaultFileRegion(raf.getChannel(), 0, getLength()), context.newProgressivePromise());
            flushFuture = context.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
        } else {
            // SSL enabled - cannot use zero-copy file transfer.
            try {
                // HttpChunkedInput will write the end marker (LastHttpContent) for us.
                flushFuture = context.writeAndFlush(new HttpChunkedInput(new ChunkedFile(raf, 0, getLength(), 8192)),
                        context.newProgressivePromise());
            } catch (IOException e) {
                throw new CustomizableResponseTypeException("Could not read file", e);
            }
        }