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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;
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Description |
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The message arrives at the receiver either once or not at all. |
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Ensures the message arrives at the receiver at least once. |
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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>