LDAPS Integration

[shantanu-s-outdu]

I am running a custom CVAT application from base version=2.2.0 with ldap authentication. I want to upgrade my solution to ldaps(secure) but haven't had any success. While I can authenticate with CA certificates in CVAT version=2.40 it doesn't work in version=2.2.0.
I have used both:

AUTH_LDAP_CONNECTION_OPTIONS = {
ldap.OPT_REFERRALS: 0, # Set referrals first
ldap.OPT_X_TLS_NEWCTX: 0, # Then TLS context
ldap.OPT_X_TLS_CACERTDIR: CERT_DIR, # Then certificate directory
ldap.OPT_X_TLS_REQUIRE_CERT: ldap.OPT_X_TLS_DEMAND, # Finally require cert
}
and the newer :

ldap.set_option(ldap.OPT_X_TLS_CACERTDIR, CERT_DIR # Certificate directory)
ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_DEMAND) #require cert
ldap.set_option(ldap.OPT_X_TLS_NEWCTX, 0)

but neither seem to work in the old version. Is there a problem because django-auth-ldap and python-ldap versions are older or am I missing something more fundamental. If anyone knows anything about this feel free to help.