2975     def coap_delete(self, ipaddr, uri, con=False, payload=None):  argument
2979         return self._coap_rq('delete', ipaddr, uri, con, payload)
2981     def coap_get(self, ipaddr, uri, con=False, payload=None):  argument
2985         return self._coap_rq('get', ipaddr, uri, con, payload)
2993     def coap_observe(self, ipaddr, uri, con=False, payload=None):  argument
2997         return self._coap_rq('observe', ipaddr, uri, con, payload)
2999     def coap_post(self, ipaddr, uri, con=False, payload=None):  argument
3003         return self._coap_rq('post', ipaddr, uri, con, payload)
3011     def coap_put(self, ipaddr, uri, con=False, payload=None):  argument
3015         return self._coap_rq('put', ipaddr, uri, con, payload)
3023     def _coap_rq(self, method, ipaddr, uri, con=False, payload=None):  argument
3028         if con: