Req: POST coap://rd.example.com/rd?ep=lights&et=core.rd-group
                           &base=coap://[ff35:30:2001:db8:f1::8000:1]
Content-Format: 40
Payload:
</light>;rt="tag:example.com,2020:light";
     if="tag:example.net,2020:actuator",
</color-temperature>;if="tag:example.net,2020:parameter";u=K

Res: 2.01 Created
Location-Path: /rd/12