Problem Statement

Demonstrate how to connect to a web server over HTTPS where that server requires that the client present a certificate to prove who (s)he is. Unlike with the HTTPS request with authentication task, it is not acceptable to perform the authentication by a username/password or a set cookie. This task is in general useful for use with webservice clients as it offers a high level of assurance that the client is an acceptable counterparty for the server. For example, Amazon Web Services uses this style of authentication.

Let's start with the solution:

local(sslcert = file('myCert.pem'))
local(x = curl('https://sourceforge.net'))
#x->set(CURLOPT_SSLCERT, #sslcert->readstring)
#sslcert->close
#x->result->asString