=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 302 Found
Date: Mon, 29 Jul 2019 00:39:32 GMT
Server: Apache/2.2.15 (Red Hat)
Location: http://hls.harvard.edu/
Connection: close
Content-Type: text/html; charset=iso-8859-1

HTTP/1.1 301 Moved Permanently
Date: Mon, 29 Jul 2019 00:39:06 GMT
Server: Apache/2.2.15 (Red Hat)
X-Powered-By: PHP/7.2.18
Vary: Cookie,User-Agent,Accept-Encoding
Location: https://hls.harvard.edu/
Cache-Control: public
Connection: close
Content-Type: text/html; charset=UTF-8

HTTP/1.1 200 OK
Date: Mon, 29 Jul 2019 00:39:06 GMT
Server: Apache/2.2.15 (Red Hat)
X-Powered-By: PHP/7.2.18
Vary: Cookie,User-Agent,Accept-Encoding
Link: &lt;https://hls.harvard.edu/wp-json/&gt;; rel=&quot;https://api.w.org/&quot;
Link: &lt;https://hls.harvard.edu/&gt;; rel=shortlink
X-ET-API-VERSION: v1
X-ET-API-ROOT: https://hls.harvard.edu/wp-json/tribe/tickets/v1/
X-ET-API-ORIGIN: https://hls.harvard.edu
X-TEC-API-VERSION: v1
X-TEC-API-ROOT: https://hls.harvard.edu/wp-json/tribe/events/v1/
X-TEC-API-ORIGIN: https://hls.harvard.edu
Cache-Control: public
Connection: close
Content-Type: text/html; charset=UTF-8
X-FRAME-OPTIONS: SAMEORIGIN

Request headers
================
HEAD / HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Host: hls.harvard.edu
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.