Hi Tommy,
in general with MQTT, the answer is no. Any fragmentation is done
at the TCP level. If you want to achieve this you have to do it at
the application level by splitting the payload into smaller chunks
and send each separately in an MQTT publish. MQTT was designed
primarily with smaller payloads in mind. The lack of such features
is what helps to keep MQTT small, so it does have an upside :-)
Ian
On 08/21/2014 03:17 PM, Tommy Svensson
wrote:
Hi,
maximum publish payload size is 256MB.
I cannot see anything in the spec, therefore I ask if there is
a restart mechanism in Mosquitto/MQTT so that the entire
message does not have to be resent in case of a network
disconnect; instead the message transfer is restarted where it
left off when network connection has been reestablished?
Regards,
/Tommy
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Ian Craggs
icraggs@xxxxxxxxxx IBM United Kingdom
Committer on Paho, Mosquitto
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