XML/XSL Module privides what appears to be Basic authentication. This module would then be useless to any modern API. Any other modules out there that can consume XML/JSON endpoints while building in custom headers for authentication?  Example, Google Analytics API. I'd like to consume XML from this API but Google uses their own authentication by POSTING a specific request and using the returned auth token on subsequent GET requests by passing "Authorization: GoogleLogin auth=XXX.  Where XXX is your returned token from previous auth POST request.  Any way this can be done with an existing module?