simple chat coding exercise

[rsouvik]

Please check loom video here: https://www.loom.com/share/bf857f198af74d6f9638eb3c8b4f4114?sid=27f9a253-fc4a-406a-b48c-3a92bf8729a7

[rsouvik]

Description: My commit messages are not that descriptive. Here is high level architecture:

1. Server: I use a HashMap to save state about users based on socket/address. Server is not backed by persistent, if needed I can add persistent and have data backed by a db. Here, if we shutdown server, state is lost
2. The server keeps listening for join requests and messages from clients and send back to other connected clients. I am using Tokio crate.
3. Client: A client can send message to server using SEND . It can also leave whenever it wants to.

[rsouvik]

also both mypickly and rsouvik are just me; let me know if any other info is needed!!