I'm not really sure, to be honest. Something to do with data transfer over the network.
Do a cargo run
and I'm sure the awesome CLI generated by clap will guide you.
- Move to a more robust I/O library like mio, or tokio if needed.
- Write a custom protocol for the fun of it.
- GUI? Maybe.
- Cross platform? Possibly.
- Mobile support? Ask again a few years later.