[OASIS Issue Tracker] (MQTT-252) Support for large message transmission

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

Andrew Schofield created MQTT-252:
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             Summary: Support for large message transmission
                 Key: MQTT-252
                 URL: https://issues.oasis-open.org/browse/MQTT-252
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: New Feature
          Components: core
    Affects Versions: 3.1.1
            Reporter: Andrew Schofield


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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