"Content-Length:" Header used for downloading/receiving.
If unset is -1.
@property response_content_length { get {} set @protected {} values { length: int64; } }
int64_t efl_net_dialer_http_response_content_length_get(const Eo *obj); void efl_net_dialer_http_response_content_length_set(Eo *obj, int64_t length);