How to use MQTT retained messages in custom Greengrass components?

Question

Hello everyone,
I'd like to use MQTT retained messages in the Greengrass component. Is it possible?
The next [tutorial](https://docs.aws.amazon.com/iot/latest/developerguide/mqtt.html#mqtt-retain-using)  says about retained messages. But there is nothing on how to set the retained flag in the documentation about IPC communication.

Tim_P · Accepted Answer

Hello,

Tim here from Premium Support. Thanks for reaching out to us, we always love to see users of our IoT services and hearing about how they're using them!
The Greengrass IPC doesn’t support sending of MQTT retained messages at this time, but I recommend checking out a different solution like Shadow: https://docs.aws.amazon.com/greengrass/v2/developerguide/ipc-local-shadows.html

How to use MQTT retained messages in custom Greengrass components?

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