-extern int send_meta(conn_list_t *, const char *, int)
-extern int broadcast_meta(conn_list_t *, const char *, int)
-extern int receive_meta(conn_list_t *)
+extern int send_meta(connection_t *, const char *, int);
+extern int broadcast_meta(connection_t *, const char *, int);
+extern int receive_meta(connection_t *);