senchalabs/connect — pull request #591 by timkuijsten (2012-06-09 19:32:02+00:00)
Title: if request contains both if-modified-since and if-none-match, both shoul...

if both if-modified-since and if-none-match are given in the client request, both headers should hold in order to give a 304. If one of both headers does not hold, a 304 can't be send.

according to http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.4