require "faraday"
require "openssl"
connection = Faraday.new "https://some.domain.co.uk:443", :ssl => {
:client_cert => OpenSSL::X509::Certificate.new(File.read(ENV["DEV_CERT_PEM"])),
:client_key => OpenSSL::PKey::RSA.new(File.read(ENV["DEV_CERT_PEM"])),
:verify => false
}
response = connection.get "my/endpoint/for/some/domain"
body = response.body