Chengdu Ebyte Electronic Technology Co.,Ltd NB124E_User ManualCopyright ©2012–2023,Chengdu Ebyte Electronic Technology Co.,LtdInstructions for POST, in the header data configured as a POST request, there is no need to configure theheader of the data length separately (for example: Content-length: 2729), the device will automatically calculate thedata length and group the packet to send, other header data needs to be manually configured, and support up to 128bytes data configuration.4.5.6 MQTT clientSupport quick access to standard MQTT3.1.1 protocol servers (OneNET, Baidu Cloud, Huawei Cloud,user-built server types, etc.) and Ali cloud server. Support quality of service level configuration (Qos 0, Qos 1),support ultra-long text configuration, and facilitate better access to network service operators (server address, threeelements, subscription and publishing addresses support up to 128 character configuration, Ali Cloud productpassword key 64 characters).