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天嵌二次封装库使用手册
V2.1.2
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#include <MQTTClient.h>
Public 属性 | |
| char | struct_id [4] |
| int | struct_version |
| int | MQTTVersion |
Options for the MQTTClient_createWithOptions call
在文件 MQTTClient.h 第 536 行定义.
| int MQTTClient_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 MQTTClient.h 第 547 行定义.
| char MQTTClient_createOptions::struct_id[4] |
The eyecatcher for this structure. must be MQCO.
在文件 MQTTClient.h 第 539 行定义.
| int MQTTClient_createOptions::struct_version |
The version number of this structure. Must be 0
在文件 MQTTClient.h 第 541 行定义.
1.8.11 
