RabbitMQ在运行CreateConnection（）时抛出ConnectFailureException

Question

我从RabbitMQ教程中复制了以下代码，并做了些微改动：

_factory = new ConnectionFactory() {HostName = "10.1.1.110"};
_factory.UserName = "admin";
_factory.Password = "admin";
_connection = _factory.CreateConnection();
_channel = _connection.CreateModel();
_channel.ExchangeDeclare("hello-exchange", "topic");
_channel.QueueDeclare(queue: "hello",
                durable: false,
                exclusive: false,
                autoDelete: false,
                arguments: null);
_channel.QueueBind("hello", "hello-exchange", "helloRoutingKey.#");

但是，当它运行到_factory.CreateConnection（）时，我会遇到一些异常：

Exception thrown: 'System.ArgumentException' in RabbitMQ.Client.dll
Exception thrown: 'System.ArgumentException' in mscorlib.dll
Exception thrown: 'System.ArgumentException' in mscorlib.dll
Exception thrown: 'RabbitMQ.Client.Exceptions.ConnectFailureException' in RabbitMQ.Client.dll
Exception thrown: 'RabbitMQ.Client.Exceptions.ConnectFailureException' in RabbitMQ.Client.dll

但是连接似乎正常，因为我仍然可以发布和接收。但是过了一会儿，接收者将再次抛出这些异常，然后与RabbitMQ服务器断开连接，但是发送者仍然可以发送消息。谁能帮忙看看有什么问题吗？

我的ASP.NET版本是4.7.2，RabbitMQ.Client版本是5.1.0。我也尝试了5.0.1，但仍然会引发异常。