=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Cache-Control: no-cache
Date: Mon, 29 Jul 2019 00:08:10 GMT
Location: https://www.cafepress.com/ssdp
Pragma: no-cache
Server: ECD (sjy/DE8F)
Content-Length: 0
Connection: close

HTTP/1.1 200 OK
Cache-Control: private
Content-Security-Policy: frame-ancestors https://*.cafepress.com https://*.cafepress.co.uk https://*.cafepress.ca https://*.cafepress.com.au ;
Content-Type: text/html; charset=utf-8
Date: Mon, 29 Jul 2019 00:08:10 GMT
Server: nginx/1.14.0
Set-Cookie: ASP.NET_SessionId=wudmtpyp4gqxkmgvscnzprkx; domain=cafepress.com; path=/; HttpOnly
Set-Cookie: cpvr=5bb5ed73-b07a-4eab-bed9-968c3803f162; domain=cafepress.com; expires=Sat, 29-Jul-2119 00:08:10 GMT; path=/
Set-Cookie: cpv=35f669c6-382b-43ae-997b-0ef959458a06; domain=cafepress.com; expires=Sat, 29-Jul-2119 00:08:10 GMT; path=/
Set-Cookie: cppid=1999; domain=cafepress.com; expires=Wed, 28-Aug-2019 00:08:10 GMT; path=/
Set-Cookie: xid=0; domain=cafepress.com; expires=Wed, 28-Aug-2019 00:08:10 GMT; path=/
Set-Cookie: jid=0; domain=cafepress.com; expires=Wed, 28-Aug-2019 00:08:10 GMT; path=/
Set-Cookie: pid.guid=ccd514cf-c7a6-44f4-a816-97046d0a2aa5; domain=cafepress.com; expires=Thu, 26-Jul-2029 00:08:10 GMT; path=/
Set-Cookie: cp-v=D9CB2A4E5E22A5CCD966A2256763E02F; domain=cafepress.com; expires=Sun, 29-Jul-2029 00:08:10 GMT; path=/
Set-Cookie: cppss=0x1; domain=cafepress.com; path=/
Strict-Transport-Security: max-age=157680000
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Length: 41703
Connection: close

Request headers
================
HEAD /ssdp 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: www.cafepress.com
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.