axum/examples/reverse-proxy/src/main.rs

//! Reverse proxy listening in "localhost:4000" will proxy all requests to "localhost:3000"
//! endpoint.
//!
//! Run with
//!
//! ```not_rust
//! cargo run -p example-reverse-proxy
//! ```

// TODO
fn main() {
    eprint!("this example has not yet been updated to hyper 1.0");
}

// use axum::{
//     body::Body,
//     extract::{Request, State},
//     http::uri::Uri,
//     response::{IntoResponse, Response},
//     routing::get,
//     Router,
// };
// use hyper::{client::HttpConnector, StatusCode};

// type Client = hyper::client::Client<HttpConnector, Body>;

// #[tokio::main]
// async fn main() {
//     tokio::spawn(server());

//     let client: Client = hyper::Client::builder().build(HttpConnector::new());

//     let app = Router::new().route("/", get(handler)).with_state(client);

//     let listener = tokio::net::TcpListener::bind("127.0.0.1:4000")
//         .await
//         .unwrap();
//     println!("listening on {}", listener.local_addr().unwrap());
//     axum::serve(listener, app).await.unwrap();
// }

// async fn handler(State(client): State<Client>, mut req: Request) -> Result<Response, StatusCode> {
//     let path = req.uri().path();
//     let path_query = req
//         .uri()
//         .path_and_query()
//         .map(|v| v.as_str())
//         .unwrap_or(path);

//     let uri = format!("http://127.0.0.1:3000{}", path_query);

//     *req.uri_mut() = Uri::try_from(uri).unwrap();

//     Ok(client
//         .request(req)
//         .await
//         .map_err(|_| StatusCode::BAD_REQUEST)?
//         .into_response())
// }

// async fn server() {
//     let app = Router::new().route("/", get(|| async { "Hello, world!" }));

//     let listener = tokio::net::TcpListener::bind("127.0.0.1:3000")
//         .await
//         .unwrap();
//     println!("listening on {}", listener.local_addr().unwrap());
//     axum::serve(listener, app).await.unwrap();
// }