get request and response info from Response() object.

def get_req_resp_record(self, resp_obj):
        """ get request and response info from Response() object.
        """
        def log_print(req_resp_dict, r_type):
            msg = "\n================== {} details ==================\n".format(r_type)
            for key, value in req_resp_dict[r_type].items():
                msg += "{:<16} : {}\n".format(key, repr(value))
            logger.log_debug(msg)

        req_resp_dict = {
            "request": {},
            "response": {}
        }

        # record actual request info
        req_resp_dict["request"]["url"] = resp_obj.request.url
        req_resp_dict["request"]["method"] = resp_obj.request.method
        req_resp_dict["request"]["headers"] = dict(resp_obj.request.headers)

        request_body = resp_obj.request.body
        if request_body:
            request_content_type = lower_dict_keys(
                req_resp_dict["request"]["headers"]
            ).get("content-type")
            if request_content_type and "multipart/form-data" in request_content_type:
                # upload file type
                req_resp_dict["request"]["body"] = "upload file stream (OMITTED)"
            else:
                req_resp_dict["request"]["body"] = request_body

        # log request details in debug mode
        log_print(req_resp_dict, "request")

        # record response info
        req_resp_dict["response"]["ok"] = resp_obj.ok
        req_resp_dict["response"]["url"] = resp_obj.url
        req_resp_dict["response"]["status_code"] = resp_obj.status_code
        req_resp_dict["response"]["reason"] = resp_obj.reason
        req_resp_dict["response"]["cookies"] = resp_obj.cookies or {}
        req_resp_dict["response"]["encoding"] = resp_obj.encoding
        resp_headers = dict(resp_obj.headers)
        req_resp_dict["response"]["headers"] = resp_headers

        lower_resp_headers = lower_dict_keys(resp_headers)
        content_type = lower_resp_headers.get("content-type", "")
        req_resp_dict["response"]["content_type"] = content_type

        if "image" in content_type:
            # response is image type, record bytes content only
            req_resp_dict["response"]["content"] = resp_obj.content
        else:
            try:
                # try to record json data
                req_resp_dict["response"]["json"] = resp_obj.json()
            except ValueError:
                # only record at most 512 text charactors
                resp_text = resp_obj.text
                req_resp_dict["response"]["text"] = omit_long_data(resp_text)

        # log response details in debug mode
        log_print(req_resp_dict, "response")

        return req_resp_dict