object MqttQoS
Quality of Service constants as defined in http://www.eclipse.org/paho/files/javadoc/org/eclipse/paho/client/mqttv3/MqttMessage.html#setQos-int-
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- settings.scala
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def
atLeastOnce: MqttQoS
Java API
Java API
Quality of Service 1 - indicates that a message should be delivered at least once (one or more times). The message can only be delivered safely if it can be persisted, so the application must supply a means of persistence using MqttConnectionSettings. If a persistence mechanism is not specified, the message will not be delivered in the event of a client failure. The message will be acknowledged across the network.
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def
atMostOnce: MqttQoS
Java API
Java API
Quality of Service 0 - indicates that a message should be delivered at most once (zero or one times). The message will not be persisted to disk, and will not be acknowledged across the network. This QoS is the fastest, but should only be used for messages which are not valuable.
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exactlyOnce: MqttQoS
Java API
Java API
Quality of Service 2 - indicates that a message should be delivered once. The message will be persisted to disk, and will be subject to a two-phase acknowledgement across the network. The message can only be delivered safely if it can be persisted, so the application must supply a means of persistence using MqttConnectionSettings. If a persistence mechanism is not specified, the message will not be delivered in the event of a client failure.
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object
AtLeastOnce extends MqttQoS
Quality of Service 1 - indicates that a message should be delivered at least once (one or more times).
Quality of Service 1 - indicates that a message should be delivered at least once (one or more times). The message can only be delivered safely if it can be persisted, so the application must supply a means of persistence using MqttConnectionSettings. If a persistence mechanism is not specified, the message will not be delivered in the event of a client failure. The message will be acknowledged across the network.
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object
AtMostOnce extends MqttQoS
Quality of Service 0 - indicates that a message should be delivered at most once (zero or one times).
Quality of Service 0 - indicates that a message should be delivered at most once (zero or one times). The message will not be persisted to disk, and will not be acknowledged across the network. This QoS is the fastest, but should only be used for messages which are not valuable.
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object
ExactlyOnce extends MqttQoS
Quality of Service 2 - indicates that a message should be delivered once.
Quality of Service 2 - indicates that a message should be delivered once. The message will be persisted to disk, and will be subject to a two-phase acknowledgement across the network. The message can only be delivered safely if it can be persisted, so the application must supply a means of persistence using MqttConnectionSettings. If a persistence mechanism is not specified, the message will not be delivered in the event of a client failure.