title: set referrer header using query string on apache configuration
body: <p>I need to take a parameter from the query string and set it in the referrer header in the Apache configuration file. 
  Do you know if this is possible? </p>
  
  <p>I'm able to do the same with the cookies but I need to do it using the query string.</p>
  
  <pre><code>setEnvIfNoCase ^Cookie$ "(referrer=\w*:\/\/\w*)" HTTP_MY_COOKIE=$1
  setEnvIfNoCase HTTP_MY_COOKIE "(http:\/\/.*\.\w*)" REFERRER=$1
  RequestHeader set Referer %{REFERRER}e
  </code></pre>
  
  <p>Regards</p>