+YAZ_EXPORT void z_HTTP_header_add_basic_auth(ODR o, Z_HTTP_Header **hp,
+ const char *username,
+ const char *password);
+YAZ_EXPORT const char *z_HTTP_header_lookup(const Z_HTTP_Header *hp,
+ const char *n);
+YAZ_EXPORT const char *z_HTTP_header_remove(Z_HTTP_Header **hp,
+ const char *n);