MQTT-SN - Max payload length

[kalpino]

Hello,

I developed a code for nRF52840 Dongle to publish data on mqtt-sn topics (I'm currently using Nordic SDK for Thread and Zigbee). I need to know what are the limitations in terms on number of bytes that I can send over mqtt-sn in a single payload.

Is there any define that specifies this limitation?

Thanks!

[Nikhil Komalan]

I do see a limitation in nRF5 SDK for Thread for mqttsn_publish example.  https://devzone.nordicsemi.com/f/nordic-q-a/77369/nrf5-sdk-for-thread-mqttsnpacket_buffer_too_short-issue-while-publishing-payload-of-size-250-and-above

Also the MQTT-SN subscriber example, can only receive some where around 105 bytes of data based on the Topic length. I would like to know, how can i receive the full payload of data.