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Represents the Quality of Service (QoS
) property of the PUBLISH
packets.
Defined in header <boost/mqtt5/types.hpp>
enum class qos_e : std::uint8_t;
Name |
Description |
---|---|
|
The message arrives at the receiver either once or not at all. |
|
Ensures the message arrives at the receiver at least once. |
|
All messages arrive at the receiver exactly once without loss or duplication of the messages. |
Determines how the PUBLISH
packets are delivered from
the sender to the receiver.
Convenience header <boost/mqtt5.hpp>