mod_xsendfile with file url
<p>The apache mod_xsendfile is good for download script
but I want to download a file with a URL like </p>

<pre><code> header("X-Sendfile: http://site.com/a.zip");
</code></pre>

<p>but it does not work. It shows error 404. </p>

<p>Can you help me about that code?</p>
