#include <MQTTAsync.h>

Public 属性
char	struct_id [4]

int	struct_version

int	sendWhileDisconnected

int	maxBufferedMessages

int	MQTTVersion

int	allowDisconnectedSendAtAnyTime

int	deleteOldestMessages

int	restoreMessages

int	persistQoS0

详细描述

Options for the MQTTAsync_createWithOptions call

在文件 MQTTAsync.h 第 941 行定义.

类成员变量说明

int MQTTAsync_createOptions::allowDisconnectedSendAtAnyTime

Allow sending of messages while disconnected before a first successful connect.

在文件 MQTTAsync.h 第 964 行定义.

int MQTTAsync_createOptions::deleteOldestMessages

在文件 MQTTAsync.h 第 968 行定义.

int MQTTAsync_createOptions::maxBufferedMessages

The maximum number of messages allowed to be buffered while not connected.

在文件 MQTTAsync.h 第 954 行定义.

int MQTTAsync_createOptions::MQTTVersion

Whether the MQTT version is 3.1, 3.1.1, or 5. To use V5, this must be set. MQTT V5 has to be chosen here, because during the create call the message persistence is initialized, and we want to know whether the format of any persisted messages is appropriate for the MQTT version we are going to connect with. Selecting 3.1 or 3.1.1 and attempting to read 5.0 persisted messages will result in an error on create.

在文件 MQTTAsync.h 第 960 行定义.

int MQTTAsync_createOptions::persistQoS0

在文件 MQTTAsync.h 第 976 行定义.

int MQTTAsync_createOptions::restoreMessages

在文件 MQTTAsync.h 第 972 行定义.

int MQTTAsync_createOptions::sendWhileDisconnected

Whether to allow messages to be sent when the client library is not connected.

在文件 MQTTAsync.h 第 952 行定义.

char MQTTAsync_createOptions::struct_id[4]

The eyecatcher for this structure. must be MQCO.

在文件 MQTTAsync.h 第 944 行定义.

int MQTTAsync_createOptions::struct_version

The version number of this structure. Must be 0, 1, 2 or 3 0 means no MQTTVersion 1 means no allowDisconnectedSendAtAnyTime, deleteOldestMessages, restoreMessages 2 means no persistQoS0

在文件 MQTTAsync.h 第 950 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