[cf-dev] CoAP error while writing large LWM2M Object

[Mrinal Sharma <mrinals@xxxxxxxxx>]

Hello Everyone,

I am using Leshan LWM2M server for client server communication. It internally uses Californium CoAP server. I am seeing an error while writing a String resource with 1 MB of data.

During the send operation of resource from Server to Client, I see a given below error error. This is 100% reproducible.

ACK-5.00   MID=15578, Token=9233882e, OptionSet={"Block1":12358}, ""

This response is handled in method BlockwiseLayer::receiveResponse()

Below is the code snippet of method where the response is handled.
 else if (!response.getOptions().hasBlock2()) {
                // All request block have been acknowledged and we receive a piggy-backed
                // response that needs no blockwise transfer. Thus, deliver it.
                super.receiveResponse(exchange, response);
            } else {

Can someone help me to resolve this issue?

Thanks,

Mrinal