aldap_req_starttls
int aldap_req_starttls(struct aldap *);
if (aldap_req_starttls(ctx->ld) == -1) {
int aldap_req_starttls(struct aldap *);
if (aldap_req_starttls(ldap->ldap_al) == -1) {
int aldap_req_starttls(struct aldap *);
if (aldap_req_starttls(al) == -1)