mirror of
https://github.com/tokio-rs/axum.git
synced 2024-12-15 03:05:51 +01:00
32 lines
901 B
Rust
32 lines
901 B
Rust
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//! Run with
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//!
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//! ```not_rust
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//! cargo run -p example-hello-world
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//! ```
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use axum::{response::Html, routing::get, Router};
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use listenfd::ListenFd;
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use tokio::net::TcpListener;
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#[tokio::main]
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async fn main() {
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// build our application with a route
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let app = Router::new().route("/", get(handler));
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let mut listenfd = ListenFd::from_env();
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let listener = match listenfd.take_tcp_listener(0).unwrap() {
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// if we are given a tcp listener on listen fd 0, we use that one
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Some(listener) => TcpListener::from_std(listener).unwrap(),
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// otherwise fall back to local listening
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None => TcpListener::bind("127.0.0.1:3000").await.unwrap(),
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};
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// run it
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println!("listening on {}", listener.local_addr().unwrap());
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axum::serve(listener, app).await.unwrap();
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}
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async fn handler() -> Html<&'static str> {
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Html("<h1>Hello, World!</h1>")
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}
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