Function ValidateDomainName

utils.go:97–100

(domain string)

	return hostChan
}
func ValidateDomainName(domain string) bool {
	r := regexp.MustCompile(`(?m)^[A-Za-z0-9\-.]+$`)
	return r.MatchString(domain)
}
func ExistOnlyOne(arr []string) bool {
	exist := false
	for _, item := range arr {