Sites built with Drupal, and using the standard configuration, will always use a specific date for the header expires. This date is set to the birthday of the founder of the project, Dries Buytaert.
expires: Sun, 19 Nov 1978 05:00:00 GMT
This header is not always set so it is not a perfect indication of whether or not a site is built in Drupal. However, if it is set one can assume with almost 100% certainty that the site is a Drupal site.
Sites built with Drupal, and using the standard configuration, will always use a specific date for the header
expires. This date is set to the birthday of the founder of the project, Dries Buytaert.expires: Sun, 19 Nov 1978 05:00:00 GMTThis header is not always set so it is not a perfect indication of whether or not a site is built in Drupal. However, if it is set one can assume with almost 100% certainty that the site is a Drupal site.
This check could be added to: https://github.com/urbanadventurer/WhatWeb/blob/master/plugins/drupal.rb
References: