Supported encoding formats
The following encoding formats are supported as per LWM2M specification:
- TLV
- JSON
- Opaque
- Text
- CBOR
- SenML CBOR
- SenML JSON
Note: If LWM2M client supports the JSON data format for
all objects, the client must inform the LWM2M server by including the content-type in the
root path link using the
ct= <link attribute>
.Following is an example:
</>;ct=110, </1/0>,</1/1>,</2/0>,</2/1>,</2/2>,</2/3>,</2/4>,</3/0>,</4/0>,</5>
Where,
content type (ct) value 110 is the value assigned in the CoAP Content-Format Registry in
SenML JSON format used by LWM2M.For more information on CBOR and SenML formats, see CBOR Support and Sensor Measurements List (SenML) Support.