void srtp_setrcc_rate (srtp_session_t *s, uint16_t rate);
int srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsize);
void srtp_setrcc_rate (srtp_session_t *s, uint16_t rate);
int srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsize);