#include <MQTTSubscribeOpts.h>

Public 属性
char	struct_id [4]

int	struct_version

unsigned char	noLocal

unsigned char	retainAsPublished

unsigned char	retainHandling

详细描述

The MQTT V5 subscribe options, apart from QoS which existed before V5.

在文件 MQTTSubscribeOpts.h 第 21 行定义.

类成员变量说明

unsigned char MQTTSubscribe_options::noLocal

To not receive our own publications, set to 1. 0 is the original MQTT behaviour - all messages matching the subscription are received.

在文件 MQTTSubscribeOpts.h 第 31 行定义.

unsigned char MQTTSubscribe_options::retainAsPublished

To keep the retain flag as on the original publish message, set to 1. If 0, defaults to the original MQTT behaviour where the retain flag is only set on publications sent by a broker if in response to a subscribe request.

在文件 MQTTSubscribeOpts.h 第 36 行定义.

unsigned char MQTTSubscribe_options::retainHandling

0 - send retained messages at the time of the subscribe (original MQTT behaviour) 1 - send retained messages on subscribe only if the subscription is new 2 - do not send retained messages at all

在文件 MQTTSubscribeOpts.h 第 41 行定义.

char MQTTSubscribe_options::struct_id[4]

The eyecatcher for this structure. Must be MQSO.

在文件 MQTTSubscribeOpts.h 第 24 行定义.

int MQTTSubscribe_options::struct_version

The version number of this structure. Must be 0.

在文件 MQTTSubscribeOpts.h 第 27 行定义.

该结构体的文档由以下文件生成:

tqinclude/paho_mqtt_c/MQTTSubscribeOpts.h

Public 属性

详细描述

类成员变量说明