WIP on doing the connection using TLS.
TLS code written, but we don't have a cert yet, so untested.
Added test certificates & loading them now.

The SSL_accept call seems to be timing out when we try to point our cient at it. Misunderstanding something, probably.
DOH! Forgot the SSL_connect() call for client sockets.

Works now, with TLS & test certificates.
Take password for cert from a settings file.