\param buf content buffer for HTTP request, NULL for empty content
\param len content length for HTTP request
\returns HTTP response; NULL on ERROR.
+
+ Use yaz_url_get_error to get details if NULL is returned.
*/
YAZ_EXPORT Z_HTTP_Response *yaz_url_exec(yaz_url_t p, const char *uri,
const char *method,
Z_HTTP_Header *headers,
const char *buf, size_t len);
+
+/** \brief get last error from yaz_url_exec
+ \param p handle
+ \returns message (possibly empty string no error occurred)
+*/
+YAZ_EXPORT const char *yaz_url_get_error(yaz_url_t p);
+
YAZ_END_CDECL
#endif