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

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

    [ https://issues.oasis-open.org/browse/MQTT-252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=59231#comment-59231 ] 

Rick Bullotta commented on MQTT-252:
------------------------------------

We've done it multiple ways.  Chunked transmission over XMPP or WebSockets, HTTP, FTP, you name it.  Usually it's best to do those transfers OOB if possible.  A similar scenario exists if you want to use the same connection (or communications channel) for streaming or tunneling (video, remote desktop, SSH, etc.).


> 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: futures
>    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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