curl_progress_callback :: #type (clientp: *void, dltotal: float64, dlnow: float64, ultotal: float64, ulnow: float64) -> s32 #c_call
curl_progress_callback :: #type (clientp: *void, dltotal: float64, dlnow: float64, ultotal: float64, ulnow: float64) -> s32 #c_call