Conversely, HEAD sometimes doesn't accurately reflect the headers for a resource available via GET. For example this is the case with App Engine's broken webapp

Conversely, HEAD sometimes doesn't accurately reflect the headers for a resource available via GET. For example this is the case with App Engine's broken webapp framework (and every app that consumes it): $ curl -sD- http://appengine-cookbook.appspot.com/|head -1 HTTP/1.1 200 OK $ curl -s --head http://appengine-cookbook.appspot.com/|head -1 HTTP/1.1 405 Method Not Allowed