=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 307 Temporary Redirect
Server: AkamaiGHost
Content-Length: 0
Location: https://www.amazon.com/gp/product/1566398606/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=390957&amp;creativeASIN=1566398606&amp;linkCode=as2&amp;tag=studentsforse-20&amp;linkId=ESYTCP7LYHOD2572
Date: Mon, 29 Jul 2019 00:31:40 GMT
Connection: close

HTTP/1.1 200 OK
Server: Server
Content-Type: text/html
Content-Length: 2221
Vary: Content-Type,Host,Cookie,Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment,User-Agent
Content-Encoding: gzip
x-amz-rid: M10BP7K8FVYHJY779TE5
Date: Mon, 29 Jul 2019 00:31:40 GMT
Connection: close

Request headers
================
HEAD /gp/product/1566398606/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=390957&amp;creativeASIN=1566398606&amp;linkCode=as2&amp;tag=studentsforse-20&amp;linkId=ESYTCP7LYHOD2572 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.amazon.com
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.