imbo/imbo — pull request #205 by christeredvartsen (2013-09-19 14:43:02+00:00)
Title: Added a Varnish Hashtwo event listener

This event listener can be used to send X-HashTwo response headers on image resources which can be used by Varnish. Read more about this feature here: https://www.varnish-cache.org/utility/secondary-hash-hash-ninja