| Interface | Description | 
|---|---|
| MqttConnectCallback | 
 The  
MqttConnectCallback interface provides connection callback
 and enumerates the message types. | 
| MqttMessageCallback | 
 The  
MqttMessageCallback interface provides connection callback
 and enumerates the message types. | 
| MqttPublishCallback | 
 The  
MqttPublishCallback interface provides subscription callback
 and enumerates the message types. | 
| MqttSubscribeCallback | 
 The  
MqttSubscribeCallback interface provides subscription
 callback and enumerates the message types. | 
| Class | Description | 
|---|---|
| MqttClient | 
 The  
MqttClient class can be used to create MQTT client
 instances. | 
| MqttConfig | 
 The  
MqttConfig class contains the configuration data used to
 connect a MqttClient. |