update: auth method

internal/auth.go

@@ -12,6 +12,10 @@ type auth struct {
 // authenticate
 // checks the user authentication.
 func (a *auth) authenticate(token string) bool {
+	if a.username == " " || a.password == " " {
+		return true
+	}
+
 	parts := strings.Split(token, ":")
 
 	return parts[0] == a.username && parts[1] == a.password

server.go

@@ -21,7 +21,7 @@ func NewServer(port string, metrics int, auth ...string) error {
 	)
 
 	// setting the authentication options
-	if len(auth) > 1 {
+	if len(auth) > 1 && auth[0] != "" && auth[1] != "" {
 		user = auth[0]
 		pass = auth[1]
 	} else {