url_scheme_t url_check_scheme (const char *s);
int url_parse_ciss(ciss_url_t *ciss, char *src);
url_scheme_t url_check_scheme (const char *s);
int url_parse_ciss(ciss_url_t *ciss, char *src);
-int url_ciss_tostring(ciss_url_t *ciss, char *dst, ssize_t len, int flags);
+int url_ciss_tostring(const ciss_url_t *ciss, char *dst, ssize_t len, int flags);