Background Process module tweakage

bgp_tweak.php

# ADDED AN "X-.*" TO THE END TO AVOID RE-SENDING CUSTOM HEADERS.

/**
 * Remove headers we do not wish to pass on to the next request.
 *
 * @param $headers
 *   Headers to filter
 * @return array
 *   Filtered headers
 */
function _background_process_filter_headers($headers) {
  $result = array();
  if (empty($headers)) {
    return $result;
  }
  foreach ($headers as $key => $value) {
    if (!preg_match('/^(Connection|Keep-Alive|Proxy-Authenticate|Proxy-Authorization|TE|Trailers|Transfer-Encoding|Upgrade|Set-Cookie|Content-Length|Host|Accept-Encoding|X-.*)$/i', $key)) {
      $result[$key] = $value;
    }
  }
  return $result;
}