rc_check_tls(3) Radius client library rc_check_tls(3) NAME rc_check_tls - Check established TLS/DTLS channels for operation and reconnect if needed. SYNOPSIS #include int rc_check_tls( rc_handle *rh ); DESCRIPTION Probes the TLS or DTLS session with a TLS heartbeat and reconnects if the session is dead. Must be called when no other thread is using the session (e.g., from a dedicated watchdog thread that holds the lock). PARAMETERS rh a handle to parsed configuration RETURN VALUE 0 on success or when TLS/DTLS is not in use, -1 if the session could not be re-established SEE ALSO rc_tls_fd(3) radcli 2026-08-19 rc_check_tls(3)