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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| use std::convert::Infallible; | ||
| use std::net::SocketAddr; | ||
| use std::sync::Arc; | ||
| use std::time::Duration; | ||
|
|
||
| use bytes::Bytes; | ||
| use http_body_util::Full; | ||
| use hyper::body::Incoming; | ||
| use hyper::{Request, Response}; | ||
| use hyper_util::rt::TokioExecutor; | ||
| use hyper_util::server::conn::auto::Builder as HttpConnectionBuilder; | ||
| use hyper_util::service::TowerToHyperService; | ||
| use rustls::ServerConfig; | ||
| use tokio::net::TcpListener; | ||
| use tokio_stream::wrappers::TcpListenerStream; | ||
| use tower::{Layer, ServiceBuilder}; | ||
| use tracing::{debug, info, trace}; | ||
|
|
||
| use hyper_server::{load_certs, load_private_key, serve_http_with_shutdown}; | ||
|
|
||
| // Define a simple service that responds with "Hello, World!" | ||
| async fn hello(_: Request<Incoming>) -> Result<Response<Full<Bytes>>, Infallible> { | ||
| Ok(Response::new(Full::new(Bytes::from("Hello, World!")))) | ||
| } | ||
|
|
||
| // Define a Custom middleware to add a header to all responses, for example | ||
| struct AddHeaderLayer; | ||
|
|
||
| impl<S> Layer<S> for AddHeaderLayer { | ||
| type Service = AddHeaderService<S>; | ||
|
|
||
| fn layer(&self, service: S) -> Self::Service { | ||
| AddHeaderService { inner: service } | ||
| } | ||
| } | ||
|
|
||
| #[derive(Clone)] | ||
| struct AddHeaderService<S> { | ||
| inner: S, | ||
| } | ||
|
|
||
| impl<S, B> tower::Service<Request<B>> for AddHeaderService<S> | ||
| where | ||
| S: tower::Service<Request<B>, Response = Response<Full<Bytes>>>, | ||
| S::Future: Send + 'static, | ||
| { | ||
| type Response = S::Response; | ||
| type Error = S::Error; | ||
| type Future = std::pin::Pin< | ||
| Box<dyn std::future::Future<Output = Result<Self::Response, Self::Error>> + Send>, | ||
| >; | ||
|
|
||
| fn poll_ready( | ||
| &mut self, | ||
| cx: &mut std::task::Context<'_>, | ||
| ) -> std::task::Poll<Result<(), Self::Error>> { | ||
| self.inner.poll_ready(cx) | ||
| } | ||
|
|
||
| fn call(&mut self, req: Request<B>) -> Self::Future { | ||
| trace!("Adding custom header to response"); | ||
| let future = self.inner.call(req); | ||
| Box::pin(async move { | ||
| let mut resp = future.await?; | ||
| resp.headers_mut() | ||
| .insert("X-Custom-Header", "Hello from middleware!".parse().unwrap()); | ||
| Ok(resp) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[tokio::main(flavor = "current_thread")] | ||
| async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> { | ||
| let addr = SocketAddr::from(([127, 0, 0, 1], 8443)); | ||
| // 1. Set up the TCP listener | ||
| let listener = TcpListener::bind(addr).await?; | ||
| info!("Listening on https://{}", addr); | ||
| let incoming = TcpListenerStream::new(listener); | ||
|
|
||
| // 2. Create the HTTP connection builder | ||
| let builder = HttpConnectionBuilder::new(TokioExecutor::new()); | ||
|
|
||
| // 3. Set up the Tower service with middleware | ||
| let svc = tower::service_fn(hello); | ||
| let svc = ServiceBuilder::new() | ||
| .layer(AddHeaderLayer) // Custom middleware | ||
| .service(svc); | ||
|
|
||
| // 4. Convert the Tower service to a Hyper service | ||
| let svc = TowerToHyperService::new(svc); | ||
|
|
||
| // 5. Set up TLS config | ||
| let certs = load_certs("examples/sample.pem")?; | ||
| let key = load_private_key("examples/sample.rsa")?; | ||
|
|
||
| let mut config = ServerConfig::builder() | ||
| .with_no_client_auth() | ||
| .with_single_cert(certs, key) | ||
| .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?; | ||
| config.alpn_protocols = vec![b"h2".to_vec(), b"http/1.1".to_vec(), b"http/1.0".to_vec()]; | ||
| let tls_config = Arc::new(config); | ||
|
|
||
| // 6. Set up graceful shutdown | ||
| let (shutdown_tx, shutdown_rx) = tokio::sync::oneshot::channel::<()>(); | ||
|
|
||
| // Spawn a task to send the shutdown signal after 1 second | ||
| tokio::spawn(async move { | ||
| tokio::time::sleep(Duration::from_secs(1)).await; | ||
| let _ = shutdown_tx.send(()); | ||
| debug!("Shutdown signal sent"); | ||
| }); | ||
|
|
||
| // 7. Start the server | ||
| info!("Starting HTTPS server..."); | ||
| serve_http_with_shutdown( | ||
| svc, | ||
| incoming, | ||
| builder, | ||
| Some(tls_config), | ||
| Some(async { | ||
| shutdown_rx.await.ok(); | ||
| info!("Shutdown signal received, starting graceful shutdown"); | ||
| }), | ||
| ) | ||
| .await?; | ||
|
|
||
| info!("Server has shut down"); | ||
| // Et voilà! | ||
| // A flexible, high-performance server with custom services, middleware, http, tls, tcp, and graceful shutdown | ||
| Ok(()) | ||
| } |
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