MQTTAsync_failureData5(3)

💖 NAME 💖

MQTTAsync_failureData5 — bestie, this is the lil' struct that shows up when your API call does NOT slay 😭

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✨ SYNOPSIS ✨

#include <MQTTAsync.h>

🎀 Data Fields 🎀

char struct_id[4]
int struct_version
MQTTAsync_token token
enum MQTTReasonCodes reasonCode
MQTTProperties properties
int code
const char * message
int packet_type

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🌸 Detailed Description 🌸

Okay so picture this: you made an API call and it went absolutely nowhere 💀. This is the data you get handed back when that unsuccessful API call finishes, and it lands in the response callback onFailure. That's the whole vibe. No cap.

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🦋 Field Documentation 🦋

char struct_id[4]

The eyecatcher for this structure, bestie — it's the little "hey it's me" tag. It will be MQFD. 👑

int struct_version

The version number of this structure. It will be 0. That's it, that's the number. ✨

MQTTAsync_token token

A token identifying the failed request. This is the receipts for the one that flopped 🫶

enum MQTTReasonCodes reasonCode

The MQTT reason code that got returned. The why, if you will 💅

MQTTProperties properties

The MQTT properties riding along on the ack, if any. Could be none! Lowkey optional energy.

int code

A numeric code identifying the MQTT client library error. A whole number that says "yeah this is what went wrong" 🔥

const char* message

Optional further text explaining the error. It can be NULL, so don't come for it if it's empty, fr fr.

int packet_type

Packet type on which the failure occurred — this one's used for publish QoS 1/2 exchanges 🎀

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🌈 Author 🌈

Generated automatically by Doxygen for Paho Asynchronous MQTT C Client Library from the source code. Not me writing it by hand, it's the robot doing its thing 🤖✨

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And that's the whole page, bestie — this little icon was brought to you by Paho Asynchronous MQTT C..., dated Tue Jun 2 2026 00:00:00, and yeah it's literally just MQTTAsync_failureData5(3) again. Periodt. 💖