C#. How to connect 2 mqtt-broker in one program?

Question

I'm trying to use 2 MQTT broker in one program with C#.
I'm using 'M2MQTT.Net' library to use MQTT application in my program.

First of all, I succeed to make single MQTT connection with broker.
Also, succeed to subscribe & publish with topic.

// Simple code that i make single connection with broker.
private void InitMqtt()
    {
        MqttClient = new MqttClient(brokerAddr);
    }

// MqttClinet() method in the M2MQTT.Net library, MQTTClient class.
public MqttClient(string brokerHostName)
        : this(brokerHostName, 1883, secure: false, null, null, MqttSslProtocols.None)
    {
    }

So what if i want to make MQTT connection over than 1, is this right code?

private void InitMqtt()
    {
        MqttClient = new MqttClient(brokerAddr);
        MqttClient2 = new MqttClient(brokerAddr2);
        MqttClient3 = new MqttClient(brokerAddr3);
    }

If it's possible to make multi-connection with various mqtt broker,
can i handle the events from 3 brokers individually?
Thanks for reading. Regards.

Answer 1

It's possible to connect multi Clients to Multi Brokers in a single task, but each Mqtt client has its own callbacks method. Somethings like this:

    protected MyMqttClient(string name ,MqttClientOptions options, List<string> TopicFiletrs)
    {
        //this._name = $"{GetType().Name}({name})";
        this._name = name;
        var factory = new MqttFactory();
        _client = factory.CreateMqttClient();
        
        _client.ApplicationMessageReceivedAsync += _client_ApplicationMessageReceivedAsync;
        _client.ConnectedAsync += _client_ConnectedAsync;
        _client.DisconnectedAsync += _client_DisconnectedAsync;

        _options = options;
        _TopicFiletrs = TopicFiletrs;
        
    }