public async Task Close()
 {
     isExit = true;
     try
     {
         await connection.StopAsync();
     }
     catch (Exception ex)
     {
         RouteErrorEvent?.Invoke(ex.Message);
     }
 }
        public async Task Start()
        {
            try
            {
                await connection.StartAsync();
            }
            catch (Exception ex)
            {
                RouteErrorEvent?.Invoke(ex.Message);

                await Task.Delay(5000);
                await Start();
            }
        }