Question 1

How to handle automatic reconnection in gmqtt?

Accepted Answer

gmqtt provides configurable reconnection with unlimited retries by default. You can adjust the number of retries and delay using the set_config method, as detailed in the Reconnects section of the README, ensuring robust network recovery.

Question 2

Does gmqtt support MQTT version 3.1?

Accepted Answer

Yes, gmqtt supports MQTT v3.1 by automatically downgrading from 5.0 if the broker doesn't support it. You can also force the version in the connect method, as shown in the Version setup example.

Question 3

gmqtt vs paho-mqtt: which is better for async Python?

Accepted Answer

gmqtt is built natively on asyncio, offering better async integration and performance compared to paho-mqtt, which relies on async wrappers. For pure async applications, gmqtt is more straightforward and efficient.

Question 4

How to set custom properties when publishing messages in gmqtt?

Accepted Answer

You can include MQTT 5.0 properties like message_expiry_interval or user_property in the publish method, as demonstrated in the Publish properties example. This allows enhanced message control and metadata.

Question 5

Can I use gmqtt with synchronous code?

Accepted Answer

gmqtt is designed for asyncio, so using it in synchronous code requires running an event loop, which adds complexity. For fully synchronous projects, libraries like paho-mqtt might be a simpler choice.

Question 6

What are the performance benefits of using uvloop with gmqtt?

Accepted Answer

uvloop can significantly enhance event loop performance, making gmqtt faster for high-throughput scenarios. The README shows compatibility, but it requires setting the event loop policy, as seen in the Getting Started example.

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