File Transfer (in Rust!)

WIP

Types of status code:

1xx: Informational - Request received, continuing process

2xx: Success - The action was successfully received, understood, and accepted

3xx: Redirection - Further action must be taken in order to complete the request

4xx: Client Error - The request contains bad syntax or cannot be fulfilled

5xx: Server Error - The server failed to fulfill an apparently valid request

Based on:

https://doc.rust-lang.org/book/ch20-01-single-threaded.html