void uh_relay_open(struct client *cl, struct relay *r, int fd, int pid);
void uh_relay_close(struct relay *r, int ret);
void uh_relay_free(struct relay *r);
void uh_relay_open(struct client *cl, struct relay *r, int fd, int pid);
void uh_relay_close(struct relay *r, int ret);
void uh_relay_free(struct relay *r);