MQTT message queue (mosquitto)

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  • January 7, 2020 at 9:30 am #30160
    William Laing
    Participant

    Good Day –

    We are pushing sensor data from LoRaWAN connected devices to the cloud using MQTT nodes in Node-RED on various Conduit AEP models.

    This is for an industrial partner who needs to capture every sensor reading.

    I modified mosquitto.conf values for in-flight and queued messages to 256 and restarted mosquitto, but testing (pulling the Ethernet cable for 20 minutes) results in only 90 of the 120 expected messages (100 bytes each, publish interval of 10 seconds) being published.

    Thank you in advance for your guidance.

    William

    January 7, 2020 at 9:36 am #30161
    Jason Reiss
    Keymaster

    The mosquitto.conf file would configure the local broker settings.
    The local broker delivers packets from the network server to node-red.

    The connection from node-red to the cloud will not be affected by the local broker settings.

    What QoS setting does the MQTT out node use?

    January 7, 2020 at 9:59 am #30162
    William Laing
    Participant

    We’re publishing from Node-RED to an MQTT endpoint at AWS using QoS=1 on the Node-RED mqtt-out node.

    We like to buffer Node-RED to AWS messages during connections outages.

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