public void Subscribe(string[] topics, MqttMsgPublishEventHandler eventHandler)
{
var mqttClient = new MqttClient(_server);
mqttClient.MqttMsgPublishReceived += eventHandler;
mqttClient.Subscribe(topics, _qosLevels);
Connect(mqttClient);
}
public static void Subscribe(string[] topics, MqttMsgPublishEventHandler eventHandler)
{
var qosLevels = new byte[] { MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE };
var mqttClient = new MqttClient(_server);
mqttClient.MqttMsgPublishReceived += eventHandler;
mqttClient.Subscribe(topics, qosLevels);
mqttClient.Connect(Guid.NewGuid().ToString());
}
public static void configFunctionMosquitto(MqttClient mClient, MqttMsgPublishEventHandler client_MqttMsgPublishReceived)
{
if (mClient != null && mClient.IsConnected)
{
mClient.MqttMsgPublishReceived += client_MqttMsgPublishReceived;
mClient.MqttMsgSubscribed += client_MqttMsgSubscribed;
mClient.MqttMsgUnsubscribed += client_MqttMsgUnsubscribed;
Console.WriteLine("Config functions with success!");
}
else
{
Console.WriteLine("Mosquitto is not connected!");
}
}
/**
* \fn Unsubscribe
* \brief unsubscribe from mqtt flow
* \param [in] mqttSubscribeInfo : mqtt subscribe informations
* \param [in] us_topics : target topics for unsubscription
* \return success or failed
*/
public bool Unsubscribe(MqttSubscribeInfo mqttSubscribeInfo, MqttMsgPublishEventHandler callBack)
{
try
{
//unsubscribe
if (null != callBack)
{
MqttMsgPublishReceived -= callBack;
}
Unsubscribe(mqttSubscribeInfo.Topics);
return(true);
}
catch (Exception ex)
{
throw new Exception($"Exception while trying to unsubscribe from broker (host={BrokerInfo.broker_address}, port={BrokerInfo.broker_port}) : {ex.Message}", ex);
}
}
/**
* \fn Subscribe
* \brief subscribe to mqtt flow
* \param [in] subscribeInfo : mqtt subscribe informations
* \param [in] callBack : callback for event association
* \return success or failed
*/
public bool Subscribe(MqttSubscribeInfo subscribeInfo, MqttMsgPublishEventHandler callBack)
{
try
{
// register to message received
if (null != callBack)
{
MqttMsgPublishReceived += callBack;
}
// subscribe to the topic
Subscribe(subscribeInfo.Topics, subscribeInfo.QoS);
return(true);
}
catch (Exception ex)
{
throw new Exception($"[ElaMqttSubscriber]\t[Subscribe]\tException while subscribing to broker (host={BrokerInfo.broker_address}, port={BrokerInfo.broker_port}): {ex.Message}", ex);
}
}
public void SubscribeEventHandler(MqttMsgPublishEventHandler MqttMsgPublishReceived)
{
_client.MqttMsgPublishReceived += MqttMsgPublishReceived;
}
public void MessagePublishReceived(MqttMsgPublishEventHandler eventHandler)
{
_client.MqttMsgPublishReceived += eventHandler;
}
