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Add low-level-native-tls examples (#2860)
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[package] | ||
name = "example-low-level-native-tls" | ||
version = "0.1.0" | ||
edition = "2021" | ||
publish = false | ||
|
||
[dependencies] | ||
axum = { path = "../../axum" } | ||
futures-util = { version = "0.3", default-features = false } | ||
hyper = { version = "1.0.0", features = ["full"] } | ||
hyper-util = { version = "0.1" } | ||
tokio = { version = "1", features = ["full"] } | ||
tokio-native-tls = "0.3.1" | ||
tower = { version = "0.5.1", features = ["make"] } | ||
tower-service = "0.3.2" | ||
tracing = "0.1" | ||
tracing-subscriber = { version = "0.3", features = ["env-filter"] } |
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-----BEGIN CERTIFICATE----- | ||
MIIDkzCCAnugAwIBAgIUXVYkRCrM/ge03DVymDtXCuybp7gwDQYJKoZIhvcNAQEL | ||
BQAwWTELMAkGA1UEBhMCVVMxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM | ||
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AopvZ09uEQ== | ||
-----END CERTIFICATE----- |
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-----BEGIN PRIVATE KEY----- | ||
MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDTZXlmOaosH9VD | ||
BNquvP/fmqxrzcv4NsChrTTTX6NWaYL4b025+LR1qugVaP9SJy/Z9lYRNTwmhkpS | ||
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w37pCS7ykL+7gp7V0WShYsw= | ||
-----END PRIVATE KEY----- |
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//! Run with | ||
//! | ||
//! ```not_rust | ||
//! cargo run -p example-low-level-native-tls | ||
//! ``` | ||
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use axum::{extract::Request, routing::get, Router}; | ||
use futures_util::pin_mut; | ||
use hyper::body::Incoming; | ||
use hyper_util::rt::{TokioExecutor, TokioIo}; | ||
use std::path::PathBuf; | ||
use tokio::net::TcpListener; | ||
use tokio_native_tls::{ | ||
native_tls::{Identity, Protocol, TlsAcceptor as NativeTlsAcceptor}, | ||
TlsAcceptor, | ||
}; | ||
use tower_service::Service; | ||
use tracing::{error, info, warn}; | ||
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt}; | ||
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#[tokio::main] | ||
async fn main() { | ||
tracing_subscriber::registry() | ||
.with( | ||
tracing_subscriber::EnvFilter::try_from_default_env() | ||
.unwrap_or_else(|_| "example_low_level_rustls=debug".into()), | ||
) | ||
.with(tracing_subscriber::fmt::layer()) | ||
.init(); | ||
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let tls_acceptor = native_tls_acceptor( | ||
PathBuf::from(env!("CARGO_MANIFEST_DIR")) | ||
.join("self_signed_certs") | ||
.join("key.pem"), | ||
PathBuf::from(env!("CARGO_MANIFEST_DIR")) | ||
.join("self_signed_certs") | ||
.join("cert.pem"), | ||
); | ||
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let tls_acceptor = TlsAcceptor::from(tls_acceptor); | ||
let bind = "[::1]:3000"; | ||
let tcp_listener = TcpListener::bind(bind).await.unwrap(); | ||
info!("HTTPS server listening on {bind}. To contact curl -k https://localhost:3000"); | ||
let app = Router::new().route("/", get(handler)); | ||
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pin_mut!(tcp_listener); | ||
loop { | ||
let tower_service = app.clone(); | ||
let tls_acceptor = tls_acceptor.clone(); | ||
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// Wait for new tcp connection | ||
let (cnx, addr) = tcp_listener.accept().await.unwrap(); | ||
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tokio::spawn(async move { | ||
// Wait for tls handshake to happen | ||
let Ok(stream) = tls_acceptor.accept(cnx).await else { | ||
error!("error during tls handshake connection from {}", addr); | ||
return; | ||
}; | ||
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// Hyper has its own `AsyncRead` and `AsyncWrite` traits and doesn't use tokio. | ||
// `TokioIo` converts between them. | ||
let stream = TokioIo::new(stream); | ||
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// Hyper also has its own `Service` trait and doesn't use tower. We can use | ||
// `hyper::service::service_fn` to create a hyper `Service` that calls our app through | ||
// `tower::Service::call`. | ||
let hyper_service = hyper::service::service_fn(move |request: Request<Incoming>| { | ||
// We have to clone `tower_service` because hyper's `Service` uses `&self` whereas | ||
// tower's `Service` requires `&mut self`. | ||
// | ||
// We don't need to call `poll_ready` since `Router` is always ready. | ||
tower_service.clone().call(request) | ||
}); | ||
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let ret = hyper_util::server::conn::auto::Builder::new(TokioExecutor::new()) | ||
.serve_connection_with_upgrades(stream, hyper_service) | ||
.await; | ||
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if let Err(err) = ret { | ||
warn!("error serving connection from {addr}: {err}"); | ||
} | ||
}); | ||
} | ||
} | ||
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async fn handler() -> &'static str { | ||
"Hello, World!" | ||
} | ||
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fn native_tls_acceptor(key_file: PathBuf, cert_file: PathBuf) -> NativeTlsAcceptor { | ||
let key_pem = std::fs::read_to_string(&key_file).unwrap(); | ||
let cert_pem = std::fs::read_to_string(&cert_file).unwrap(); | ||
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let id = Identity::from_pkcs8(cert_pem.as_bytes(), key_pem.as_bytes()).unwrap(); | ||
NativeTlsAcceptor::builder(id) | ||
// let's be modern | ||
.min_protocol_version(Some(Protocol::Tlsv12)) | ||
.build() | ||
.unwrap() | ||
} |