关闭Wordpress RSS feed的分块编码?

Firstly sorry if this has been answered elsewhere, but I can't find anything close to this.

For various reasons, I am importing an RSS feed into flash to get its content. Everything works fine, except that I can't get the size of the RSS file when loading it (via URLLoader and getBytesTotal. After some research I found that the feed itself it chunked, which as I understand it (and I am a novice at this!) means flash (evidently) can't access the file size of the feed because of the way it's being transferred. So my question is, can I turn this chunked encoding off, either on the server or in flash?

Failing this, is it possible to write some server code (perhaps php) that would periodically download and store the feed itself as a regular XML file?

Apologies if this post is vague, I'm very unfamiliar with this topic and there isn't any relevant code.

To receive "normal" output, send out an HTTP/1.0 request instead of an HTTP/1.1 in Flash. This forces the server to respond with an HTTP/1.0 response. HTTP/1.0 will never respond with chunked encoding, because HTTP/1.0 does not support chunked encoding.