CoAP & UDP MTU over 6lowpan with IoT SDK

[jack]

Hi,

What is available MTU of CoAP and UDP over 6lowpan with IoT SDK ? In my application, I need to transfer dozens of kb data to ble node over 6lowpan with iot SDK. Do I need do package fragmentation and composition myself ? Have the iot sdk implemented already? Are there any best practices on my applications.

Thanks!

Jack

[Petter Myhre]

The maximum MTU of the 6LoWPAN implementation in the IoT SDK is 1280 bytes.

The fragmentation and reassembly is handled by the L2CAP layer.