[DefaultClient] Use incoming http version to outer server

README.md

@@ -87,13 +87,7 @@ async fn main() {
         Some(Cache::new(128)),
     );
 
-    let client = DefaultClient::new(
-        tokio_native_tls::native_tls::TlsConnector::builder()
-            // You must set ALPN if you want to support HTTP/2
-            .request_alpns(&["h2", "http/1.1"])
-            .build()
-            .unwrap(),
-    );
+    let client = DefaultClient::new().unwrap();
     let server = proxy
         .bind(("127.0.0.1", 3003), move |_client_addr, req| {
             let client = client.clone();
@@ -111,8 +105,6 @@ async fn main() {
                     // Modifying upgraded traffic is not supported yet.
 
                     // You can try https://echo.websocket.org/.ws to test websocket.
-                    // But you need to disable alpn of DefaultClient to disable HTTP2 because echo.websocket.org does not support HTTP/2 for Websocket.
-                    // It should be match incoming and outgoing HTTP version on DefaultClient, I'll fix this later. #54
                     println!("Upgrade connection");
                     let Upgrade {
                         mut client_to_server,

examples/dev_proxy.rs

@@ -80,13 +80,7 @@ async fn main() {
         Some(Cache::new(128)),
     );
 
-    let client = DefaultClient::new(
-        tokio_native_tls::native_tls::TlsConnector::builder()
-            // You must set ALPN if you want to support HTTP/2
-            .request_alpns(&["h2", "http/1.1"])
-            .build()
-            .unwrap(),
-    );
+    let client = DefaultClient::new().unwrap();
     let proxy = proxy
         .bind(("127.0.0.1", 3003), move |_client_addr, mut req| {
             let client = client.clone();

examples/proxy.rs

@@ -74,13 +74,7 @@ async fn main() {
         Some(Cache::new(128)),
     );
 
-    let client = DefaultClient::new(
-        tokio_native_tls::native_tls::TlsConnector::builder()
-            // You must set ALPN if you want to support HTTP/2
-            .request_alpns(&["h2", "http/1.1"])
-            .build()
-            .unwrap(),
-    );
+    let client = DefaultClient::new().unwrap();
     let server = proxy
         .bind(("127.0.0.1", 3003), move |_client_addr, req| {
             let client = client.clone();
@@ -98,8 +92,6 @@ async fn main() {
                     // Modifying upgraded traffic is not supported yet.
 
                     // You can try https://echo.websocket.org/.ws to test websocket.
-                    // But you need to disable alpn of DefaultClient to disable HTTP2 because echo.websocket.org does not support HTTP/2 for Websocket.
-                    // It should be match incoming and outgoing HTTP version on DefaultClient, I'll fix this later. #54
                     println!("Upgrade connection");
                     let Upgrade {
                         mut client_to_server,

src/default_client.rs

@@ -3,7 +3,7 @@ use futures::channel::mpsc::{UnboundedReceiver, UnboundedSender};
 use http_body_util::Empty;
 use hyper::{
     body::{Body, Incoming},
-    client, header, Request, Response, StatusCode, Uri,
+    client, header, Request, Response, StatusCode, Uri, Version,
 };
 use hyper_util::rt::{TokioExecutor, TokioIo};
 use std::task::{Context, Poll};
@@ -37,10 +37,28 @@ pub struct Upgrade {
 }
 #[derive(Clone)]
 /// Default HTTP client for this crate
-pub struct DefaultClient(tokio_native_tls::TlsConnector);
+pub struct DefaultClient {
+    tls_connector_no_alpn: tokio_native_tls::TlsConnector,
+    tls_connector_alpn_h2: tokio_native_tls::TlsConnector,
+}
 impl DefaultClient {
-    pub fn new(tls_connector: native_tls::TlsConnector) -> Self {
-        Self(tls_connector.into())
+    pub fn new() -> native_tls::Result<Self> {
+        let tls_connector_no_alpn = native_tls::TlsConnector::builder().build()?;
+        let tls_connector_alpn_h2 = native_tls::TlsConnector::builder()
+            .request_alpns(&["h2", "http/1.1"])
+            .build()?;
+
+        Ok(Self {
+            tls_connector_no_alpn: tokio_native_tls::TlsConnector::from(tls_connector_no_alpn),
+            tls_connector_alpn_h2: tokio_native_tls::TlsConnector::from(tls_connector_alpn_h2),
+        })
+    }
+
+    fn tls_connector(&self, http_version: Version) -> &tokio_native_tls::TlsConnector {
+        match http_version {
+            Version::HTTP_2 => &self.tls_connector_alpn_h2,
+            _ => &self.tls_connector_no_alpn,
+        }
     }
 
     /// Send a request and return a response.
@@ -55,7 +73,7 @@ impl DefaultClient {
         B::Data: Send,
         B::Error: Into<Box<dyn std::error::Error + Send + Sync>>,
     {
-        let mut send_request = self.connect(req.uri()).await?;
+        let mut send_request = self.connect(req.uri(), req.version()).await?;
 
         let (req_parts, req_body) = req.into_parts();
 
@@ -99,7 +117,7 @@ impl DefaultClient {
         Ok((res, None))
     }
 
-    async fn connect<B>(&self, uri: &Uri) -> Result<SendRequest<B>, Error>
+    async fn connect<B>(&self, uri: &Uri, http_version: Version) -> Result<SendRequest<B>, Error>
     where
         B: Body + Unpin + Send + 'static,
         B::Data: Send,
@@ -120,7 +138,7 @@ impl DefaultClient {
 
         if uri.scheme() == Some(&hyper::http::uri::Scheme::HTTPS) {
             let tls = self
-                .0
+                .tls_connector(http_version)
                 .connect(host, tcp)
                 .await
                 .map_err(|err| Error::TlsConnectError(uri.clone(), err))?;

tests/test.rs

@@ -73,12 +73,7 @@ fn client_tls(proxy_port: u16, cert: &rcgen::CertifiedKey) -> reqwest::Client {
 }
 
 fn proxy_client() -> DefaultClient {
-    DefaultClient::new(
-        tokio_native_tls::native_tls::TlsConnector::builder()
-            .request_alpns(&["h2", "http/1.1"])
-            .build()
-            .unwrap(),
-    )
+    DefaultClient::new().unwrap()
 }
 
 async fn setup<B, E, E2, S, F>(app: Router, service: S) -> (u16, u16)