noxy 0.0.7

HTTP forward and reverse proxy with a pluggable tower middleware pipeline
Documentation 
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mod common;

use axum::Router;
use axum::routing::get;
use axum_server::tls_rustls::RustlsConfig;
use common::*;
use noxy::http::HttpService;
use noxy::middleware::BlockList;
use rcgen::{CertificateParams, KeyPair};
use tower::Layer;

#[tokio::test]
async fn block_list_blocks_matching_host() {
    let upstream_addr = start_upstream("hello").await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = BlockList::hosts(["localhost"]).unwrap();
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    assert_eq!(resp.status(), 403);
}

#[tokio::test]
async fn block_list_forwards_non_matching() {
    let upstream_addr = start_upstream("hello").await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = BlockList::hosts(["blocked.example.com"]).unwrap();
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    assert_eq!(resp.status(), 200);
    assert_eq!(resp.text().await.unwrap(), "hello");
}

#[tokio::test]
async fn block_list_path_blocks_and_forwards() {
    install_crypto_provider();
    let key_pair = KeyPair::generate().unwrap();
    let params = CertificateParams::new(vec!["localhost".to_string()]).unwrap();
    let cert = params.self_signed(&key_pair).unwrap();
    let cert_der = cert.der().to_vec();
    let key_der = key_pair.serialized_der().to_vec();

    let config = RustlsConfig::from_der(vec![cert_der], key_der)
        .await
        .unwrap();

    let app = Router::new()
        .route("/", get(|| async { "home" }))
        .route("/admin/settings", get(|| async { "admin" }));

    let handle = axum_server::Handle::new();
    let listener_handle = handle.clone();

    tokio::spawn(async move {
        axum_server::bind_rustls("127.0.0.1:0".parse().unwrap(), config)
            .handle(handle)
            .serve(app.into_make_service())
            .await
            .unwrap();
    });

    let upstream_addr = listener_handle.listening().await.unwrap();

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = BlockList::paths(["/admin/*"]).unwrap();
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    // Blocked path
    let resp = client
        .get(format!(
            "https://localhost:{}/admin/settings",
            upstream_addr.port()
        ))
        .send()
        .await
        .unwrap();
    assert_eq!(resp.status(), 403);

    // Allowed path
    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();
    assert_eq!(resp.status(), 200);
    assert_eq!(resp.text().await.unwrap(), "home");
}

#[tokio::test]
async fn block_list_custom_response() {
    let upstream_addr = start_upstream("hello").await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = BlockList::hosts(["localhost"])
            .unwrap()
            .response(http::StatusCode::NOT_FOUND, "not found");
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    assert_eq!(resp.status(), 404);
    assert_eq!(resp.text().await.unwrap(), "not found");
}