class Excon::Middleware::CaptureCookies

def response_call(datum)
  cookie = get_header(datum, 'Set-Cookie')
  if cookie
    cookie = extract_cookies_from_set_cookie(cookie)
    unless datum[:headers].key?("Cookie")
      datum[:headers]["Cookie"] = cookie
    else
      original_cookies = datum[:headers]["Cookie"]
      datum[:headers]["Cookie"] = original_cookies.empty? ? cookie : [original_cookies,cookie].join('; ')
    end
  end
  super(datum)
end