=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Location: http://developers.google.com/google-apps/calendar/?csw=1
Content-Type: text/html; charset=UTF-8
X-Content-Type-Options: nosniff
Date: Thu, 02 Dec 2021 23:18:23 GMT
Expires: Thu, 02 Dec 2021 23:48:23 GMT
Cache-Control: public, max-age=1800
Server: sffe
Content-Length: 253
X-XSS-Protection: 0
Connection: close

HTTP/1.1 301 Moved Permanently
Location: https://developers.google.com/google-apps/calendar/?csw=1
X-Cloud-Trace-Context: c3925e9aacce7a6b29537c3039994988
Date: Thu, 02 Dec 2021 23:18:23 GMT
Content-Type: text/html
Server: Google Frontend
Transfer-Encoding: chunked
Connection: close

HTTP/1.1 301 Moved Permanently
Content-Type: text/html; charset=utf-8
Location: https://developers.google.com/calendar?csw=1
Cache-Control: no-cache, must-revalidate
Pragma: no-cache
Set-Cookie: _ga_devsite=GA1.3.3043339808.1638487103; Expires=Sat, 02-Dec-2023 23:18:23 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-22WyE/VzPOrz/MTKbWoNE6LDOiaVaZ' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 0
X-Content-Type-Options: nosniff
Expires: Fri, 01 Jan 1990 00:00:00 GMT
X-Cloud-Trace-Context: c49215830ea80533611171ab0a557216
Content-Length: 237
Date: Thu, 02 Dec 2021 23:18:23 GMT
Server: Google Frontend
Alt-Svc: h3=&quot;:443&quot;; ma=2592000,h3-29=&quot;:443&quot;; ma=2592000,h3-Q050=&quot;:443&quot;; ma=2592000,h3-Q046=&quot;:443&quot;; ma=2592000,h3-Q043=&quot;:443&quot;; ma=2592000,quic=&quot;:443&quot;; ma=2592000; v=&quot;46,43&quot;
Connection: close

HTTP/1.1 200 OK
Last-Modified: Tue, 15 Jun 2021 21:59:03 GMT
Content-Type: text/html; charset=utf-8
Set-Cookie: _ga_devsite=GA1.3.3201713096.1638487104; Expires=Sat, 02-Dec-2023 23:18:24 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-l9/eIUXIX7eiIln/4tUvjNBcnx2qlw' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 0
X-Content-Type-Options: nosniff
Cache-Control: no-cache, must-revalidate
Expires: 0
Pragma: no-cache
X-Cloud-Trace-Context: c4cb4c42f15b94e36d7bfa537e17929c
Content-Length: 81178
Date: Thu, 02 Dec 2021 23:18:24 GMT
Server: Google Frontend
Alt-Svc: h3=&quot;:443&quot;; ma=2592000,h3-29=&quot;:443&quot;; ma=2592000,h3-Q050=&quot;:443&quot;; ma=2592000,h3-Q046=&quot;:443&quot;; ma=2592000,h3-Q043=&quot;:443&quot;; ma=2592000,quic=&quot;:443&quot;; ma=2592000; v=&quot;46,43&quot;
Connection: close

Request headers
================
HEAD /calendar?csw=1 HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: developers.google.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.