 |
Paho Asynchronous MQTT C Client Library
|
|
Paho Asynchronous MQTT C Client Library
|
#include <MQTTAsync.h>
Structure to define call options. For MQTT 5.0 there is input data as well as that describing the response method. So there is now also a synonym MQTTAsync_callOptions to better reflect the use. This responseOptions name is kept for backward compatibility.
| char struct_id[4] |
The eyecatcher for this structure. Must be MQTR
| int struct_version |
The version number of this structure. Must be 0 or 1 if 0, no MQTTV5 options
| MQTTAsync_onSuccess* onSuccess |
A pointer to a callback function to be called if the API call successfully completes. Can be set to NULL, in which case no indication of successful completion will be received.
| MQTTAsync_onFailure* onFailure |
A pointer to a callback function to be called if the API call fails. Can be set to NULL, in which case no indication of unsuccessful completion will be received.
| void* context |
A pointer to any application-specific context. The the context pointer is passed to success or failure callback functions to provide access to the context information in the callback.
| MQTTAsync_token token |
A token is returned from the call. It can be used to track the state of this request, both in the callbacks and in future calls such as MQTTAsync_waitForCompletion. This is output only - any change by the application will be ignored.
| MQTTAsync_onSuccess5* onSuccess5 |
A pointer to a callback function to be called if the API call successfully completes. Can be set to NULL, in which case no indication of successful completion will be received.
| MQTTAsync_onFailure5* onFailure5 |
A pointer to a callback function to be called if the API call successfully completes. Can be set to NULL, in which case no indication of successful completion will be received.
| MQTTProperties properties |
MQTT V5 input properties
| MQTTSubscribe_options subscribeOptions |
| int subscribeOptionsCount |
| MQTTSubscribe_options* subscribeOptionsList |
1.9.1