Use CoAP over the UDP transport protocol, with optional reliability.  
Use CoAP over the UDP transport protocol, with optional reliability. 
Module. Specify USEMODULE += unicoap_driver_udp in your application's Makefile.
- See also
 - unicoap_rfc7252_message_type_t
 
This is the dependency graph of this driver:
unicoap_driver_udp
├── unicoap_driver_rfc7252_common
│   ├── unicoap_driver_rfc7252_common_messaging
│   └── unicoap_driver_rfc7252_common_pdu
├── unicoap_sock_support
│   ├── sock_async
│   ├── sock_async_event
│   ├── sock_aux_local
│   └── sock_util
└── ... (operating system networking module)