Rocket cache control FileServer

A custom implementation of the Rocket FileServer, that supports headers for cache control. CCFileServer can be used as a drop in replacement for Rocket's FileServer.

Set your own caching rules, while keeping rockets FileServer Options

It is this easy to use:

```rust

[launch]

fn rocket() -> Rocket { let options = CCOptions::builder() .maxage(Some(300)) .nocache(Some(()));

rocket::build()
    .mount("/assets", CCFileServer::from("www/public/assets"))
    .mount("/js", CCFileServer::new("www/public/js", options))

} ```

Usage

Mount the CCFileServer the same way you mount a normal rocket FileServer.

Additionally, you need to provide a CCOptions struct to configure the headers of the CCFileServer. Every field that has Some value will be set as a header.

TODO's

Right now it is just a prototype. There are still some things to do:

• [x] Port the rocket Options
• [ ] Implement all caching options
  • [x] max-age header
  • [x] public/private, nocache and nostore
  • [x] Provide optional function to calculate expires date
  • [ ] Implement E-tags
• [ ] Cleaner api