private static DPSServerSetting Load()
 {
     DPSServerSetting tmp = null;
     try
     {
         string json = File.ReadAllText(fileName);
         tmp = JsonConvert.DeserializeObject<DPSServerSetting>(json);
     }
     catch (Exception e)
     {
         tmp = new DPSServerSetting();
     }
     return tmp;
 }
 public static void Reload()
 {
     instance = Load();
 }