int vconn_open(const char *name, int min_version, struct vconn **);
void vconn_close(struct vconn *);
const char *vconn_get_name(const struct vconn *);
-uint32_t vconn_get_ip(const struct vconn *);
+uint32_t vconn_get_remote_ip(const struct vconn *);
+uint16_t vconn_get_remote_port(const struct vconn *);
+uint32_t vconn_get_local_ip(const struct vconn *);
+uint16_t vconn_get_local_port(const struct vconn *);
int vconn_connect(struct vconn *);
int vconn_recv(struct vconn *, struct ofpbuf **);
int vconn_send(struct vconn *, struct ofpbuf *);