57048dd6e9
CoIoT is a shelly specific extensions to CoAP: It adds a new Request code which is not part of the CoAP spec as well as using CoAP multicast (which is part of CoAP). This commit * renames "statusCode" to "reqRspCode" which describes the actual field more precisely as it is in fact a Request or Response code, not a status code. * Allows joining multicast groups, by default using the CoAP specified multicast address. * Allows setting custom Request codes in requests, as well as processing the PDUs Request/response code by the client.