static int uta_link2( char* target, nng_socket* nn_sock, nng_dialer* dialer );
static int rt_link2_ep( endpoint_t* ep );
static int uta_epsock_byname( route_table_t* rt, char* ep_name, nng_socket* nn_sock );
-static int uta_epsock_rr( route_table_t *rt, int mtype, int group, int* more, nng_socket* nn_sock );
+static int uta_epsock_rr( route_table_t *rt, uint64_t key, int group, int* more, nng_socket* nn_sock );
static inline int xlate_nng_state( int state, int def_state );