use fallback if not x-forwarded-for is present

main.go

@@ -1105,10 +1105,9 @@ func main() {
 	go housekeeping()
 
 	r := gin.New()
-
 	r.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string {
 		return fmt.Sprintf("%s - \"%s %s %s %d %s \"%s\" %s\"\n",
-			param.Request.Header.Get("X-Forwarded-For"),
+			utils.RealIP(&param.Request.Header, param.Request.RemoteAddr),
 			param.Method,
 			param.Path,
 			param.Request.Proto,