struct vconn *);
struct rconn *rconn_create(int txq_limit, int inactivity_probe_interval,
int max_backoff);
-void rconn_connect(struct rconn *, const char *name);
+int rconn_connect(struct rconn *, const char *name);
void rconn_connect_unreliably(struct rconn *,
const char *name, struct vconn *vconn);
void rconn_disconnect(struct rconn *);
bool rconn_is_alive(const struct rconn *);
bool rconn_is_connected(const struct rconn *);
int rconn_disconnected_duration(const struct rconn *);
+bool rconn_is_connectivity_questionable(struct rconn *);
uint32_t rconn_get_ip(const struct rconn *);