Example

[[route]]
matches = "/"
response = "static/index.html"

[[route]]
matches = "/:usr"
response = "static/hello.html"

[fallback]
response = "teapot"

The responses would receive the matching template variables.
So static/hello.html would get a {{usr}} variable.

teapot would be a well-known preset . 😉

Collaboration

I'm probably not gonna add the functionality in the foreseeable future, but it could be a fun
exercise for someone looking for a little project.
So if someone wants to work on this, please feel free to add a comment here.

Here's how I would do it:

Add axum or another web framework as a dependency.
Write a serde-toml-based parser for the routing format.
Set up dynamic routes from the TOML config in the web-framework. (I don't know if this is possible with Axum)

Open for other solutions, though.

Credits

In 7d271ba#r89222702 @aszlig and me started a discussion about server responses. I decided to move it here so that the idea doesn't get lost.

binserve has such functionality, even though I prefer TOML as a configuration language. They also don't provide any fallback route (or presets) as far as I can tell.