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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Critical
    • Resolution: No Action
    • Affects Version/s: 5
    • Fix Version/s: None
    • Component/s: futures
    • Labels:
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    • Proposal:
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      Provide a way of publishing a set of messages indicating that they are numbered fragments of a larger message, transmitting and acknowledging each of the fragments independently. This enables the interleaving of other messages in between the fragments and also retransmission of only the interrupted fragment following a network disconnection.

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      Provide a way of publishing a set of messages indicating that they are numbered fragments of a larger message, transmitting and acknowledging each of the fragments independently. This enables the interleaving of other messages in between the fragments and also retransmission of only the interrupted fragment following a network disconnection.
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      Description

      MQTT has an architected limit of 256MB for the message payload. In practice, transmitting a message this large is troublesome. First, the transmission of large messages ties up the network connection for a considerable time, potentially blocking smaller messages. Second, the longer a message takes to transmit, the higher the chance that a network outage will interrupt the transmission, which would then have to be restarted from the beginning. MQTT would make a good transport for delivery of large payloads, in particular device firmware, but only if they can be transmitted in a more manageable way.

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            • Assignee:
              andrew_schofield Andrew Schofield
              Reporter:
              andrew_schofield Andrew Schofield
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              • Created:
                Updated:
                Resolved: