Presently device-coap-c is a proof of concept. Below are ideas for future development, more or less in priority order.
- Define security parameters in Vault/Consul rather than configuration file
- Require use of DTLS client identity
- Support a DTLS pre-shared key per client; presently supports a single key shared by all clients
- Use OpenSSL for TLS library rather than tinydtls; OpenSSL available in Alpine v3.11 Docker base image, so don't have to build it
- Define libcoap ports in device config