Get the response data.
The payload is available until nabto_client_coap_free is called.
NABTO_CLIENT_DECL_PREFIX NabtoClientError NABTO_CLIENT_API nabto_client_coap_get_response_payload(NabtoClientCoap* coap, void** payload, size_t* payloadLength)
- [in] the coap request response object.
- [out] start of the payload.
- [out] length of the payload
NABTO_CLIENT_EC_OK: if a payload exists and payload and payloadLength is set appropriately.
NABTO_CLIENT_EC_NO_DATA: if the response does not have a payload
NABTO_CLIENT_EC_INVALID_STATE: if no response is ready yet.