最新版本客户端无法连接服务器

[aprilyush]

升级到最新版本后 客户端无法连接服务器
`
static async Task Main(string[] args)
{
Console.WriteLine("Hello, World!");

XTrace.UseConsole();
try
{
  
    var mqttClient = new MqttClient
    {
        Log = XTrace.Log,
        Server = $"tcp://127.0.0.1:1883",
        UserName = "fofia",
        Password = "123123",
        ClientId = "fofia_client_faker111",
        Reconnect = true,
        KeepAlive = 30
    };

    var ack =await mqttClient.ConnectAsync();
    if (ack.ReturnCode == ConnectReturnCode.Accepted)
    {
        XTrace.WriteLine("MQTT已连接");

    }
}
catch (Exception ex)
{
    XTrace.WriteException(ex);
}
Console.ReadKey();

}
`
报错：A task was canceled.