curl -i http://pi.hole/admin/api.php?summary?
HTTP/1.1 200 OK
X-Pi-hole: The Pi-hole Web interface is working!
X-Frame-Options: DENY
Content-type: application/json
Set-Cookie: PHPSESSID=kp1rcg2ludkj4kshsjfjf582f1; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Transfer-Encoding: chunked
Date: Mon, 15 May 2017 22:12:01 GMT
Server: lighttpd/1.4.35
Connection timed out.