wasi-http: add the port to authority when opening a TCP connection (#…

…8671)

* wasi-http: add the port to authority when opening a TCP connection

* Ignore test on riscv64 and s390x

---------

Co-authored-by: Alex Crichton <alex@alexcrichton.com>

crates/test-programs/src/bin/api_proxy_forward_request.rs

@@ -0,0 +1,42 @@
+use test_programs::wasi::http::types::{
+    Headers, IncomingRequest, OutgoingBody, OutgoingResponse, ResponseOutparam,
+};
+
+struct T;
+
+test_programs::proxy::export!(T);
+
+impl test_programs::proxy::exports::wasi::http::incoming_handler::Guest for T {
+    fn handle(request: IncomingRequest, outparam: ResponseOutparam) {
+        let res = test_programs::http::request(
+            request.method(),
+            request.scheme().unwrap(),
+            request.authority().unwrap().as_str(),
+            request.path_with_query().unwrap().as_str(),
+            None,
+            None,
+            None,
+            None,
+            None,
+        )
+        .unwrap();
+
+        let hdrs = Headers::from_list(&res.headers).unwrap();
+        let resp = OutgoingResponse::new(hdrs);
+        resp.set_status_code(res.status).expect("status code");
+        let body = resp.body().expect("outgoing response");
+
+        ResponseOutparam::set(outparam, Ok(resp));
+
+        let out = body.write().expect("outgoing stream");
+        out.blocking_write_and_flush(res.body.as_ref())
+            .expect("writing response");
+
+        drop(out);
+        OutgoingBody::finish(body, None).expect("outgoing-body.finish");
+    }
+}
+
+// Technically this should not be here for a proxy, but given the current
+// framework for tests it's required since this file is built as a `bin`
+fn main() {}

crates/wasi-http/src/types.rs

@@ -187,7 +187,14 @@ pub async fn default_send_request_handler(
         between_bytes_timeout,
     }: OutgoingRequestConfig,
 ) -> Result<IncomingResponse, types::ErrorCode> {
-    let Some(authority) = request.uri().authority().map(ToString::to_string) else {
+    let authority = if let Some(authority) = request.uri().authority() {
+        if authority.port().is_some() {
+            authority.to_string()
+        } else {
+            let port = if use_tls { 443 } else { 80 };
+            format!("{}:{port}", authority.to_string())
+        }
+    } else {
         return Err(types::ErrorCode::HttpRequestUriInvalid);
     };
     let tcp_stream = timeout(connect_timeout, TcpStream::connect(&authority))

crates/wasi-http/tests/all/main.rs

@@ -527,6 +527,27 @@ async fn do_wasi_http_echo(uri: &str, url_header: Option<&str>) -> Result<()> {
     Ok(())
 }
 
+#[test_log::test(tokio::test)]
+// test uses TLS but riscv/s390x don't support that yet
+#[cfg_attr(any(target_arch = "riscv64", target_arch = "s390x"), ignore)]
+async fn wasi_http_without_port() -> Result<()> {
+    let req = hyper::Request::builder()
+        .method(http::Method::GET)
+        .uri("https://httpbin.org/get");
+
+    let response = run_wasi_http(
+        test_programs_artifacts::API_PROXY_FORWARD_REQUEST_COMPONENT,
+        req.body(body::empty())?,
+        None,
+        None,
+    )
+    .await??;
+
+    assert_eq!(response.status(), StatusCode::OK);
+
+    Ok(())
+}
+
 mod body {
     use http_body_util::{combinators::BoxBody, BodyExt, Empty, Full};
     use hyper::body::Bytes;

crates/wasi/tests/all/api.rs

@@ -120,6 +120,11 @@ fn api_proxy() {}
 #[allow(dead_code)]
 fn api_proxy_streaming() {}
 
+// This is tested in the wasi-http crate, but need to satisfy the `foreach_api!`
+// macro above.
+#[allow(dead_code)]
+fn api_proxy_forward_request() {}
+
 wasmtime::component::bindgen!({
     world: "test-reactor",
     async: true,