QoS 2 inbound flow state (client → server).
Server receives PUBLISH → sends PUBREC → awaits PUBREL → sends PUBCOMP.
Readonly
The PUBLISH packet being tracked.
Packet identifier.
Timestamp when the packet was received.
Current flow state.
Flow type discriminator.
QoS 2 inbound flow state (client → server).
Server receives PUBLISH → sends PUBREC → awaits PUBREL → sends PUBCOMP.