Due to all the changes, this is basically a new version for this
example. The main benefit is the use of sock_udp but also the client
side is now more robust and reliable.
The parameters required for the PSK and ECC (e.g. keys) modes are moved
to an unique header.
The integration of TinyDTLS for RIOT has been merged into the
development branch of the official repository.
It will be officially available on the master branch in the next
release of tinyDTLS.
Other minor updates:
- Support for the RIOT's memarray
- tinydtls/sha2 is removed from the compilation for giving priority
to RIOT's sha2 functions.