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Represents the RETAIN flag in the PUBLISH packets.
Defined in header <boost/mqtt5/types.hpp>
enum class retain_e : std::uint8_t;
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Name |
Description |
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The Server will replace any existing retained message for this Topic with this message. |
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The Server will not store this message and will not remove or replace any existing retained message. |
This flag informs the Server about whether or not it should store the current message.
Convenience header <boost/mqtt5.hpp>