Simple Static

Simple Static is a simple http web server that serves one simple http file and other possible resources. The reason for Simple Static's existance is to provide a back-end webserver for simple cases such as a maintenance page or a 404 page for cases where the proxy does not serve static sites itself.

Simple Static is able to embed javascript and css files from given paths to the html file and also handles Content-Security-Policy so that any inline styles or scripts are included in the CSP for maximum security.

Simple Static is also capable of serving other static content, but it's purpose is strictly to serve content like images for the main html file.

Deployment

Install from cargo

Run cargo install simplestatic

And then just run simplestatic. Use --help for help.

Docker

Simplestatic can be pulled from ghcr.io/transyhdistys/simplestatic:latest

So running it can be simple as docker run -dp 3333:3333 ghcr.io/transyhdistys/simplestatic:latest

Or for docker-compose

simplestatic:
    image: ghcr.io/transyhdistys/simplestatic:latest
    environment:
      - SSTATIC_PORT: 3333 # See configuring for more
    ports:
      - 3333:3333

Build manually

Simply install Rust and run cargo run. It should not have other dependencies, and at least Rust 1.48 is new enough.

Performance

On my personal computer when testing with wrk, Simple Static is able to serve about 150,000 requests per second, which should be plenty for anything.

100 MB of RAM is probably plenty for all kinds of maintenance websites (unless if you're using big javascript libraries, in which case you may need more).

As for CPU I can't quite tell. A toaster should be able to run this, but with enough traffic it will probably eat all of the CPU you give it.

Configuring Simple Static

Configuration can be done in three different ways.

The order in which these are prioritized from the first priority to last are

1. Command-Line Arguments
2. config.toml
3. Environment Variables

An example toml configuration can be found at config.sample.toml. The default config file is config.toml at working directory and config.sample.toml is configured to use the default configurations.

Templating

Simple Static supports a small bit of templating in order to customize the webpage for each request.

1. At the start of the program it looks for entries of {{ js }} and {{ css }} in the html file. This is where it embeds any external javascript and css files it finds respectively.
2. Every time when the page is rendered, a few additional templates are filled. Refer to the table below:

License

Simple Static is licensed under the AGPLv3 license.