MQTT C Client Libraries Internals: Connack Struct Reference

| MQTT C Client Libraries Internals

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Data Fields
Connack Struct Reference

Data for a connack packet. More...

`#include <MQTTPacket.h>`

Collaboration diagram for Connack:
[legend]

## Data Fields
Header | header
| MQTT header byte.
union { |
unsigned char all |
| all connack flags
struct { |
bit sessionPresent: 1 |
| was a session found on the server?
unsigned int reserved: 7 |
| message type nibble
} bits
} | flags
| connack flags byte
unsigned char | rc
| connack reason code
unsigned int | MQTTVersion
| the version of MQTT
MQTTProperties | properties
| MQTT 5.0 properties.

## Detailed Description

Data for a connack packet.

## Field Documentation

## ◆ properties

MQTTProperties Connack::properties

MQTT 5.0 properties.

Not used for MQTT < 5.0

The documentation for this struct was generated from the following file:

- MQTTPacket.h