| Re: [wakaama-dev] COAP payload header flag 'C8' to indicate that a resource is of type string |
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John, The C8 doesn’t mean what you think it does. In fact, there is nothing in the TLV format to indicate what type the resource is. In the Wakaama source, have a look at the lwm2m_decode_TLV function in tlv.c. The C8 means it is a resource with an 8-bit long ID and an 8-bit long length. C4 is a resource with an 8-bit long ID and a length of 4. Regards, Scott From: wakaama-dev-bounces@xxxxxxxxxxx [mailto:wakaama-dev-bounces@xxxxxxxxxxx]
On Behalf Of Brady, John Hi, I have a Wakaama client talking to leshan server. I am looking at the COAP messages on the Leshan UI. I have attached a screenshot.
My question is – where (in either the client or server) is the
‘C8’ header flag set to indicate that the resource is of type string? For example when I read the manufacturer resource in the device object there is a ‘C8’ header flag at the beginning of the COAP payload when you view the messages on the Leshan UI.
My issue is that, I have created a new resource of type string in the object device but it is returning asci characters on the leshan UI and there is a ‘C4’ header flag at the beginning of the COAP payload.
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