conn, err = ldap.DialURL(fmt.Sprintf("ldap://%s:%d", ldap_host, ldap_port))
	if err != nil {
		log.Fatalf("dial connection error::::%v", err)
		return
	}
	err = conn.StartTLS(&tls.Config{
		InsecureSkipVerify: true,
	})
	if err != nil {
		log.Fatalf("ldap tls error::::%v", err)
	}
	err = conn.Bind(ldap_admin, ldap_pwd)
	if err != nil {
		log.Fatalf("bind admin user error::::%v", err)
	}
searchrequest := ldap.NewSearchRequest(
		baseDN, ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false, fmt.Sprintf(Filter, search_name, search_name), []string{}, []ldap.Control{})
	res, err := conn.Search(searchrequest)
	if err != nil {
		log.Fatalf("search error::::%v", err)
	}
	if len(res.Entries) != 1 {
		log.Fatalf("search username error::::%v", search_name)
	}

LDAP Result Code 2 "Protocol Error": 0000203D: LdapErr: DSID-0C0911AA, comment: Unknown extended request OID, data 0, v3839