C# 无法连接到kafka群集时没有异常

当程序无法连接到kafka群集时，我无法获取异常。 代码在控制台日志中输出异常，但我需要它抛出异常。我正在使用这个c#库：

---

要获取应用程序中的实际异常，需要添加

.SetErrorHandler（）

：

ProducerBuilder\u kafkaProducer=新的ProducerBuilder（\u configKafka）；
使用（var kafkaProducer=_kafkaProducer.SetErrorHandler（（生产者，错误）=>
{
//您可以在这里处理错误
}).Build（））

---

错误。原因包含错误消息

谢谢！它起作用了。但是，将处理3个或更多错误。但我只想在生成消息后得到1个错误或异常。可能吗？

ProducerConfig _configKafka = new ProducerConfig { BootstrapServers ="localhost:9092/" };

ProducerBuilder<string, string> _kafkaProducer = new ProducerBuilder<string, string>(_configKafka);
using (var kafkaProducer = _kafkaProducer.Build())
{

    try
    {
        var dr = kafkaProducer.ProduceAsync("Kafka_Messages", new Message<string, string> { Key = null, Value = $"message {i++}" });
        dr.Wait(TimeSpan.FromSeconds(10));

        if(dr.Exception!=null)
        {
            Console.WriteLine($"Delivery failed:");
        }

        var status = dr.Status;

        //Console.WriteLine($"Delivered '{dr.Value}' to '{dr.TopicPartitionOffset}'");
    }

    catch (ProduceException<Null, string> e)
    {
        Console.WriteLine($"Delivery failed: {e.Error.Reason}");
    }
}

%3|1565248275.024|FAIL|rdkafka#producer-1| [thrd:localhst:9092/bootstrap]: localhst:9092/bootstrap: Failed to resolve 'localhst:9092': No such host is known.  (after 2269ms in state CONNECT)
%3|1565248275.024|ERROR|rdkafka#producer-1| [thrd:localhst:9092/bootstrap]: localhst:9092/bootstrap: Failed to resolve 'localhst:9092': No such host is known.  (after 2269ms in state CONNECT)
%3|1565248275.025|ERROR|rdkafka#producer-1| [thrd:localhst:9092/bootstrap]: 1/1 brokers are down

    ProducerBuilder<string, string> _kafkaProducer = new ProducerBuilder<string, string>(_configKafka);

    using (var kafkaProducer = _kafkaProducer.SetErrorHandler((producer, error) =>
                        {
                           //You can handle error right here

                        }).Build())