title: Apache2: Change response headers
body: <p>I'm running on my ubuntu 12.04 system apache2 and playing around with response headers. I want to change the behavior of http response headers, especially the Content-Length header. I've tried adding following lines in my apache2.conf in the IfModule mod_headers.c section:<br>
  <br>
  <code>
  Header set Static-Header "Static Content with nonsense"<br>
  Header set Content-Length "1338"<br>
  </code>
  <br>If I run <i>curl -I localhost</i> I get the expected header field <i>Content-Length: 1338</i> (curl -I performs a HEAD request).
  <br>If I run <i>curl -i</i> the Content-Length is correctly calculated.
  <br>In RFC2616, section 9.4 is described that the HEAD request SHOULD be identical to the information sent in response to a GET request. 
  <br>
  Can someone explain me this behavior?!</p>