Before using an Message Queue for MQTT client (referred to here as the MQTT client) to send and receive messages, you need
to download an SDK based on the development languages that are supported by Message Queue for MQTT.
By default, Message Queue for MQTT supports the standard MQTT 3.1.1 protocol and is theoretically compatible with all
MQTT clients. However, some MQTT clients may still have compatibility issues.
Table 1 lists the recommended third-party SDKs for languages and platforms that are widely
used by MQTT users.
MQTT client SDKs in other languages have not been tested yet. To download these SDKs,