Resource
 Client     Server
    |         |
    |<=======>| DTLS Connection Establishment
    |         |   using Raw Public Keys
    |         |
    +-------->| Header: GET (Code=0.01)
    | GET     | Uri-Path: "temperature"
    |         |
    |         |
    |         |
F:  |<--------+ Header: 2.05 Content
    | 2.05    | Payload: <sensor value>
    |         |