extern bool send_meta_sptps(void *, uint8_t, const void *, size_t);
extern bool receive_meta_sptps(void *, uint8_t, const void *, uint16_t);
extern void broadcast_meta(struct connection_t *, const char *, int);
extern bool send_meta_sptps(void *, uint8_t, const void *, size_t);
extern bool receive_meta_sptps(void *, uint8_t, const void *, uint16_t);
extern void broadcast_meta(struct connection_t *, const char *, int);