+YAZ_EXPORT int yaz_sru_get_encode(Z_HTTP_Request *hreq, Z_SRW_PDU *srw_pdu,
+ ODR encode, const char *charset);
+YAZ_EXPORT int yaz_sru_post_encode(Z_HTTP_Request *hreq, Z_SRW_PDU *srw_pdu,
+ ODR encode, const char *charset);
+YAZ_EXPORT int yaz_sru_soap_encode(Z_HTTP_Request *hreq, Z_SRW_PDU *srw_pdu,
+ ODR odr, const char *charset);
+