hyper で HTTP/1 サーバー

01-README.md

hyper で HTTP/1 サーバー

構成

• Cargo.toml
• src/main.rs

実行

cargo run

サーバーが起動したら curl で確認します。

curl -v http://localhost:3000

02-Cargo.toml

[package]
name = "hyper-minimal"
version = "0.1.0"
edition = "2024"

[dependencies]
hyper = { version = "1.5", features = ["server", "http1"] }
hyper-util = { version = "0.1", features = ["tokio", "server", "http1"] }
tokio = { version = "1", features = ["full"] }

03-main.rs

use hyper::{Request, Response, body::Incoming};
use hyper::service::service_fn;
use hyper_util::rt::TokioIo;
use hyper_util::server::conn::auto::Builder;
use tokio::net::TcpListener;
use std::convert::Infallible;

async fn handle_request(_req: Request<Incoming>) -> Result<Response<String>, Infallible> {
    Ok(Response::new("Hello, World!".to_string()))
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let addr = "127.0.0.1:3000";
    let listener = TcpListener::bind(addr).await?;
    
    println!("Listening on http://{}", addr);

    loop {
        let (stream, _) = listener.accept().await?;
        let io = TokioIo::new(stream);

        tokio::spawn(async move {
            if let Err(err) = Builder::new(hyper_util::rt::TokioExecutor::new())
                .serve_connection(io, service_fn(handle_request))
                .await
            {
                eprintln!("Error serving connection: {:?}", err);
            }
        });
    }
}