rc_tls_fd - Man Page

#include <radcli/>

int rc_tls_fd(
    rc_handle  *rh
);

This can also be used as a test for the application to see whether TLS or DTLS are in use.

rh

a handle to parsed configuration

the file descriptor used by the TLS session, or -1 on error

rc_check_tls(3)

radcli.h(3), rc_check_tls(3).