|  | MQTT C Client Libraries Internals
    | 
The data returned on completion of an unsuccessful API call in the response callback onFailure. More...
#include <MQTTAsync.h>

| Data Fields | |
| char | struct_id [4] | 
| The eyecatcher for this structure.  More... | |
| int | struct_version | 
| The version number of this structure.  More... | |
| MQTTAsync_token | token | 
| A token identifying the failed request. | |
| enum MQTTReasonCodes | reasonCode | 
| The MQTT reason code returned. | |
| MQTTProperties | properties | 
| The MQTT properties on the ack, if any. | |
| int | code | 
| A numeric code identifying the MQTT client library error. | |
| const char * | message | 
| Optional further text explaining the error.  More... | |
| int | packet_type | 
| Packet type on which the failure occurred - used for publish QoS 1/2 exchanges. | |
The data returned on completion of an unsuccessful API call in the response callback onFailure.
| const char* MQTTAsync_failureData5::message | 
Optional further text explaining the error.
Can be NULL.
| char MQTTAsync_failureData5::struct_id[4] | 
The eyecatcher for this structure.
Will be MQFD.
| int MQTTAsync_failureData5::struct_version | 
The version number of this structure.
Will be 0
 1.8.17
 1.8.17