The rouille library is very easy to get started with.

Listening to a port is done by calling the start_server function:

use rouille::Request;
use rouille::Response;

rouille::start_server("0.0.0.0:1234", move |request| {
    Response::text("hello world")
});

Whenever an HTTP request is received on the address passed as first parameter, the closure passed as second parameter is called. This closure must then return a Response that will be sent back to the client.

See the documentation of start_server for more details.

Analyzing the request

The parameter that the closure receives is a Request object that represents the request made by the client.

The Request object itself provides some getters, but most advanced functionnalities are provided by other modules of this crate.

• In order to dispatch between various code depending on the URL, you can use the router! macro.
• In order to serve static files, use the match_assets function.
• ... TODO: write the rest

Returning a response

Once you analyzed the request, it is time to return a response by returning a Response object.

All the members of Response are public, so you can customize it as you want. There are also several constructors that you build a basic Response which can then modify.