-extern int send_meta(connection_t *, const char *, int);
-extern int broadcast_meta(connection_t *, const char *, int);
-extern int receive_meta(connection_t *);
+extern bool send_meta(struct connection_t *, const char *, int);
+extern void broadcast_meta(struct connection_t *, const char *, int);
+extern bool flush_meta(struct connection_t *);
+extern bool receive_meta(struct connection_t *);