RabbitMQ使用本地队列但发布到远程队列?

var factory = new ConnectionFactory() { HostName = hostname, UserName = "test", Password = "test" };
var connection = factory.CreateConnection();

我的问题是,我需要在这里创建两个连接吗?(1个用于本地队列,1个用于远程队列)

或者,我可以在 Send() RoutingKey

channel.BasicPublish(
            exchange: "",
            routingKey: some.remote.ip.address:1234,
            basicProperties: props,
            body: SerializationUtils.Serialize(message));