Implement HTTP to HTTPS redirect with per-listener binding

Adds the HTTP redirect listener that redirects all plain HTTP requests to
the HTTPS equivalent URL. Each listener with http_port > 0 runs its own
redirect server on bind_addr:http_port.

- build_redirect_url: constructs https://{host}:{port}/{path}?{query},
  omitting port 443 and stripping the host port from the Host header
- redirect_handler: axum handler returning 301 with Location header,
  400 for missing/empty Host, 404 for ACME challenge paths
- redirect_router: creates axum Router with fallback handler
- start_http_redirect_listener: binds TCP and spawns redirect server
- ACME HTTP-01 challenge path returns 404 (placeholder for future)
- 19 unit tests for URL construction and host parsing
- 8 integration tests covering 301 redirect, 400 on missing Host,
  port 443 omission, non-443 port inclusion, query preservation,
  ACME challenge 404
This commit is contained in:
2026-06-11 13:14:27 +00:00
parent 2791070971
commit d893187c40
2 changed files with 481 additions and 2 deletions

View File

@@ -248,3 +248,238 @@ async fn test_rate_limit_eviction_task() {
handle.abort();
}
fn make_redirect_listener_config(
bind_addr: &str,
http_port: u16,
https_port: u16,
) -> reverse_proxy::config::static_config::ListenerConfig {
reverse_proxy::config::static_config::ListenerConfig {
bind_addr: bind_addr.to_string(),
http_port,
https_port,
tls: reverse_proxy::config::static_config::TlsConfig {
mode: "manual".to_string(),
acme_domains: vec![],
acme_cache_dir: String::new(),
acme_directory: "production".to_string(),
cert_path: String::new(),
key_path: String::new(),
},
sites: vec![],
}
}
#[tokio::test]
async fn test_http_redirect_returns_301_with_location() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::builder()
.redirect(reqwest::redirect::Policy::none())
.build()
.unwrap();
let resp = client
.get(format!("http://127.0.0.1:{}/some/path", addr.port()))
.header("Host", "example.com")
.send()
.await
.unwrap();
assert_eq!(resp.status(), reqwest::StatusCode::MOVED_PERMANENTLY);
let location = resp.headers().get("location").unwrap().to_str().unwrap();
assert_eq!(location, "https://example.com/some/path");
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_port_443_omitted_from_url() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::builder()
.redirect(reqwest::redirect::Policy::none())
.build()
.unwrap();
let resp = client
.get(format!("http://127.0.0.1:{}/", addr.port()))
.header("Host", "example.com")
.send()
.await
.unwrap();
let location = resp.headers().get("location").unwrap().to_str().unwrap();
assert_eq!(location, "https://example.com/");
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_non_443_port_included_in_url() {
let config = make_redirect_listener_config("127.0.0.1", 0, 8443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::builder()
.redirect(reqwest::redirect::Policy::none())
.build()
.unwrap();
let resp = client
.get(format!("http://127.0.0.1:{}/", addr.port()))
.header("Host", "example.com")
.send()
.await
.unwrap();
let location = resp.headers().get("location").unwrap().to_str().unwrap();
assert_eq!(location, "https://example.com:8443/");
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_empty_host_returns_400() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
use tokio::io::{AsyncReadExt, AsyncWriteExt};
let mut stream = tokio::net::TcpStream::connect(addr).await.unwrap();
stream
.write_all(b"GET / HTTP/1.1\r\nHost: \r\nConnection: close\r\n\r\n")
.await
.unwrap();
let mut response = vec![0u8; 4096];
let n = tokio::time::timeout(
std::time::Duration::from_secs(5),
stream.read(&mut response),
)
.await
.unwrap()
.unwrap();
let response_str = String::from_utf8_lossy(&response[..n]);
assert!(
response_str.contains(" 400 "),
"expected 400 status, got: {response_str}"
);
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_no_host_header_returns_400() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
use tokio::io::{AsyncReadExt, AsyncWriteExt};
let mut stream = tokio::net::TcpStream::connect(addr).await.unwrap();
stream
.write_all(b"GET / HTTP/1.0\r\nConnection: close\r\n\r\n")
.await
.unwrap();
let mut response = vec![0u8; 4096];
let n = tokio::time::timeout(
std::time::Duration::from_secs(5),
stream.read(&mut response),
)
.await
.unwrap()
.unwrap();
let response_str = String::from_utf8_lossy(&response[..n]);
assert!(
response_str.contains(" 400 "),
"expected 400 status, got: {response_str}"
);
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_strips_host_port() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::builder()
.redirect(reqwest::redirect::Policy::none())
.build()
.unwrap();
let resp = client
.get(format!("http://127.0.0.1:{}/path", addr.port()))
.header("Host", "example.com:8080")
.send()
.await
.unwrap();
let location = resp.headers().get("location").unwrap().to_str().unwrap();
assert_eq!(location, "https://example.com/path");
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_preserves_query_string() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::builder()
.redirect(reqwest::redirect::Policy::none())
.build()
.unwrap();
let resp = client
.get(format!(
"http://127.0.0.1:{}/search?q=test&page=1",
addr.port()
))
.header("Host", "git.alk.dev")
.send()
.await
.unwrap();
let location = resp.headers().get("location").unwrap().to_str().unwrap();
assert_eq!(location, "https://git.alk.dev/search?q=test&page=1");
handle.abort();
}
#[tokio::test]
async fn test_http_redirect_acme_challenge_returns_404() {
let config = make_redirect_listener_config("127.0.0.1", 0, 443);
let (addr, handle) = reverse_proxy::tls::redirect::start_http_redirect_listener(&config)
.await
.unwrap();
let client = reqwest::Client::new();
let resp = client
.get(format!(
"http://127.0.0.1:{}/.well-known/acme-challenge/abc123",
addr.port()
))
.header("Host", "example.com")
.send()
.await
.unwrap();
assert_eq!(resp.status(), reqwest::StatusCode::NOT_FOUND);
handle.abort();
}