#include <MQTTAsync.h>

MQTTAsync_responseOptions 的协作图:

Public 属性
char	struct_id [4]

int	struct_version

MQTTAsync_onSuccess *	onSuccess

MQTTAsync_onFailure *	onFailure

void *	context

MQTTAsync_token	token

MQTTAsync_onSuccess5 *	onSuccess5

MQTTAsync_onFailure5 *	onFailure5

MQTTProperties	properties

MQTTSubscribe_options	subscribeOptions

int	subscribeOptionsCount

MQTTSubscribe_options *	subscribeOptionsList

详细描述

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.

在文件 MQTTAsync.h 第 698 行定义.

类成员变量说明

void* MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 722 行定义.

MQTTAsync_onFailure* MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 716 行定义.

MQTTAsync_onFailure5* MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 740 行定义.

MQTTAsync_onSuccess* MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 710 行定义.

MQTTAsync_onSuccess5* MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 734 行定义.

MQTTProperties MQTTAsync_responseOptions::properties

MQTT V5 input properties

在文件 MQTTAsync.h 第 744 行定义.

char MQTTAsync_responseOptions::struct_id[4]

The eyecatcher for this structure. Must be MQTR

在文件 MQTTAsync.h 第 701 行定义.

int MQTTAsync_responseOptions::struct_version

The version number of this structure. Must be 0 or 1 if 0, no MQTTV5 options

在文件 MQTTAsync.h 第 704 行定义.

MQTTSubscribe_options MQTTAsync_responseOptions::subscribeOptions

在文件 MQTTAsync.h 第 748 行定义.

int MQTTAsync_responseOptions::subscribeOptionsCount

在文件 MQTTAsync.h 第 753 行定义.

MQTTSubscribe_options* MQTTAsync_responseOptions::subscribeOptionsList

在文件 MQTTAsync.h 第 757 行定义.

MQTTAsync_token MQTTAsync_responseOptions::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.

在文件 MQTTAsync.h 第 728 行定义.

该结构体的文档由以下文件生成:

tqinclude/paho_mqtt_c/MQTTAsync.h

Public 属性

详细描述

类成员变量说明