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ConnectivityFoundry / AwaLWM2M

Awa LWM2M is an implementation of the OMA Lightweight M2M protocol in C.
BSD 3-Clause "New" or "Revised" License
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Accept option (not Found) #365

Open fernandesson opened 6 years ago

fernandesson commented 6 years ago

Hi! I'm working on integration betwen a device using Awa Client and Ericsson Iot Accelerator.

During our tests we found that the gateway (one Leshan server) can do readings with the gateway diagnostic client, but the IOT Accelerator could not do readings internally.

Through traces we see that the only difference between the two requests is the presence of an option that specifies how the server wants to receive the message ("accept"). In the requests originated from the gateway (Leshan) this option is always sent, and we receive a response; in IOT Accelerator this option is not sent and the request fails.

This parameter is optional according to the specification, and in case it is not sent the client must respond with the format of preference. What happens in the case of the device we are testing is that we received an invalid response (not found):

On LWM2M specification, 8.1 Required Features, is possible verify the Accept option.

I'm using AwaLWM2M on orange pi zero plus, Linux 4.14.48-sunxi64

image001

Traces.zip

boyvinall commented 6 years ago

Hi. This project is largely unmaintained at the moment, since founding members and companies have mostly left and shutdown. If you would like to submit a pull request, we'd be happy to consider it but otherwise this continues as-is at the current time.