# Class: MqttSubAckMessage

## vertx-mqtt-server-js/mqtt_sub_ack_message~ MqttSubAckMessage

#### new MqttSubAckMessage()

Represents an MQTT SUBACK message

Source:
  - vertx-mqtt-server-js/mqtt_sub_ack_message.js, line 30

### Methods

#### grantedQoSLevels() → {Array.<number>}

Source:
  - vertx-mqtt-server-js/mqtt_sub_ack_message.js, line 58

##### Returns:

list of granted QoS levels

Type
  Array.<number>

#### messageId() → {number}

Source:
  - vertx-mqtt-server-js/mqtt_sub_ack_message.js, line 42

##### Returns:

Message identifier

Type
  number