def receive_external(self, http_verb, host, url, http_headers):
        """
        Retrieve a streaming request for a file.
        :param http_verb: str GET is only supported right now
        :param host: str host we are requesting the file from
        :param url: str url to ask the host for
        :param http_headers: object headers to send with the request
        :return: requests.Response containing the successful result
        """
        if http_verb == 'GET':
            return self.http.get(host + url, headers=http_headers, stream=True)
        else:
            raise ValueError("Unsupported http_verb:" + http_verb)
Retrieve a streaming request for a file.
        :param http_verb: str GET is only supported right now
        :param host: str host we are requesting the file from
        :param url: str url to ask the host for
        :param http_headers: object headers to send with the request
        :return: requests.Response containing the successful result