The code is organized into 3 files; client.rs, server.rs, and lib.rs. Rust automagically generates binaries for client and server, lib simply has a small amount of shared code.
To run the server, run
./server <IP> <PORT>
For the client, run
./client <MOBILE_ID> <IP> <SERVER_PORT> <CLIENT_PORT>
The client port is needed because multiple clients need to bind to their own port.
Run as many of clients as you want, so long as the ports are different.
If you wish to compile the code, install rust and cargo Link(https://www.rust-lang.org/en-US/install.html)
Then for the server just run;
cargo run --bin server 127.0.0.1 7788
For the client;
cargo run --bin client 1556 127.0.0.1 7788 7780