Does anybody know the specific configuration directives for Varnish 4 which can enable this?
If I do: curl -v 'http://SERVER/nps.json' -X OPTIONS
Right now for my varnish I get back
<h2>The server returned a "405 Method Not Allowed".</h2>
If I try to access the Apache behind it I get:
So it is Varnish which blocks the OPTION requests.