feat(ext/http): Make http server parameters configurable

ext/http/http_next.rs

@@ -70,6 +70,7 @@ use std::io;
 use std::pin::Pin;
 use std::ptr::null;
 use std::rc::Rc;
+use std::time::Duration;
 
 use super::fly_accept_encoding;
 use fly_accept_encoding::Encoding;
@@ -165,6 +166,25 @@ pub enum HttpNextError {
   UpgradeUnavailable(#[from] crate::service::UpgradeUnavailableError),
 }
 
+/// A set of configuration parameters for HTTP/2.
+/// If a field is `None`, the default value from the hyper crate will be used.
+/// The default values may change in future versions.
+#[derive(Default, Clone, Copy)]
+pub struct Http2Config {
+  pub max_pending_accept_reset_streams: Option<usize>,
+  pub max_local_error_reset_streams: Option<usize>,
+  pub initial_stream_window_size: Option<u32>,
+  pub initial_connection_window_size: Option<u32>,
+  pub adaptive_window: Option<bool>,
+  pub max_frame_size: Option<u32>,
+  pub max_concurrent_streams: Option<u32>,
+  pub keep_alive_interval: Option<Duration>,
+  pub keep_alive_timeout: Option<Duration>,
+  pub max_send_buf_size: Option<usize>,
+  pub max_header_list_size: Option<u32>,
+  pub auto_date_header: Option<bool>,
+}
+
 #[op2(fast)]
 #[smi]
 pub fn op_http_upgrade_raw(
@@ -829,9 +849,48 @@ fn serve_http2_unconditional(
   io: impl HttpServeStream,
   svc: impl HttpService<Incoming, ResBody = HttpRecordResponse> + 'static,
   cancel: Rc<CancelHandle>,
+  h2_config: Http2Config,
 ) -> impl Future<Output = Result<(), hyper::Error>> + 'static {
-  let conn =
-    http2::Builder::new(LocalExecutor).serve_connection(TokioIo::new(io), svc);
+  let mut builder = http2::Builder::new(LocalExecutor);
+
+  if let Some(v) = h2_config.max_pending_accept_reset_streams {
+    builder.max_pending_accept_reset_streams(v);
+  }
+  if let Some(v) = h2_config.max_local_error_reset_streams {
+    builder = builder.max_local_error_reset_streams(v);
+  }
+  if let Some(v) = h2_config.initial_stream_window_size {
+    builder.initial_stream_window_size(v);
+  }
+  if let Some(v) = h2_config.initial_connection_window_size {
+    builder.initial_connection_window_size(v);
+  }
+  if let Some(v) = h2_config.adaptive_window {
+    builder.adaptive_window(v);
+  }
+  if let Some(v) = h2_config.max_frame_size {
+    builder.max_frame_size(v);
+  }
+  if let Some(v) = h2_config.max_concurrent_streams {
+    builder.max_concurrent_streams(v);
+  }
+  if let Some(v) = h2_config.keep_alive_interval {
+    builder.keep_alive_interval(v);
+  }
+  if let Some(v) = h2_config.keep_alive_timeout {
+    builder.keep_alive_timeout(v);
+  }
+  if let Some(v) = h2_config.max_send_buf_size {
+    builder.max_send_buf_size(v);
+  }
+  if let Some(v) = h2_config.max_header_list_size {
+    builder.max_header_list_size(v);
+  }
+  if let Some(v) = h2_config.auto_date_header {
+    builder.auto_date_header(v);
+  }
+
+  let conn = builder.serve_connection(TokioIo::new(io), svc);
   async {
     match conn.or_abort(cancel).await {
       Err(mut conn) => {
@@ -847,11 +906,12 @@ async fn serve_http2_autodetect(
   io: impl HttpServeStream,
   svc: impl HttpService<Incoming, ResBody = HttpRecordResponse> + 'static,
   cancel: Rc<CancelHandle>,
+  h2_config: Http2Config,
 ) -> Result<(), HttpNextError> {
   let prefix = NetworkStreamPrefixCheck::new(io, HTTP2_PREFIX);
   let (matches, io) = prefix.match_prefix().await?;
   if matches {
-    serve_http2_unconditional(io, svc, cancel)
+    serve_http2_unconditional(io, svc, cancel, h2_config)
       .await
       .map_err(HttpNextError::Hyper)
   } else {
@@ -866,6 +926,7 @@ fn serve_https(
   request_info: HttpConnectionProperties,
   lifetime: HttpLifetime,
   tx: tokio::sync::mpsc::Sender<Rc<HttpRecord>>,
+  h2_config: Http2Config,
 ) -> JoinHandle<Result<(), HttpNextError>> {
   let HttpLifetime {
     server_state,
@@ -877,21 +938,21 @@ fn serve_https(
     handle_request(req, request_info.clone(), server_state.clone(), tx.clone())
   });
   spawn(
-    async {
+    async move {
       let handshake = io.handshake().await?;
       // If the client specifically negotiates a protocol, we will use it. If not, we'll auto-detect
       // based on the prefix bytes
       let handshake = handshake.alpn;
       if Some(TLS_ALPN_HTTP_2) == handshake.as_deref() {
-        serve_http2_unconditional(io, svc, listen_cancel_handle)
+        serve_http2_unconditional(io, svc, listen_cancel_handle, h2_config)
           .await
           .map_err(HttpNextError::Hyper)
       } else if Some(TLS_ALPN_HTTP_11) == handshake.as_deref() {
         serve_http11_unconditional(io, svc, listen_cancel_handle)
           .await
           .map_err(HttpNextError::Hyper)
       } else {
-        serve_http2_autodetect(io, svc, listen_cancel_handle).await
+        serve_http2_autodetect(io, svc, listen_cancel_handle, h2_config).await
       }
     }
     .try_or_cancel(connection_cancel_handle),
@@ -903,6 +964,7 @@ fn serve_http(
   request_info: HttpConnectionProperties,
   lifetime: HttpLifetime,
   tx: tokio::sync::mpsc::Sender<Rc<HttpRecord>>,
+  h2_config: Http2Config,
 ) -> JoinHandle<Result<(), HttpNextError>> {
   let HttpLifetime {
     server_state,
@@ -914,7 +976,7 @@ fn serve_http(
     handle_request(req, request_info.clone(), server_state.clone(), tx.clone())
   });
   spawn(
-    serve_http2_autodetect(io, svc, listen_cancel_handle)
+    serve_http2_autodetect(io, svc, listen_cancel_handle, h2_config)
       .try_or_cancel(connection_cancel_handle),
   )
 }
@@ -924,6 +986,7 @@ fn serve_http_on<HTTP>(
   listen_properties: &HttpListenProperties,
   lifetime: HttpLifetime,
   tx: tokio::sync::mpsc::Sender<Rc<HttpRecord>>,
+  h2_config: Http2Config,
 ) -> JoinHandle<Result<(), HttpNextError>>
 where
   HTTP: HttpPropertyExtractor,
@@ -935,14 +998,14 @@ where
 
   match network_stream {
     NetworkStream::Tcp(conn) => {
-      serve_http(conn, connection_properties, lifetime, tx)
+      serve_http(conn, connection_properties, lifetime, tx, h2_config)
     }
     NetworkStream::Tls(conn) => {
-      serve_https(conn, connection_properties, lifetime, tx)
+      serve_https(conn, connection_properties, lifetime, tx, h2_config)
     }
     #[cfg(unix)]
     NetworkStream::Unix(conn) => {
-      serve_http(conn, connection_properties, lifetime, tx)
+      serve_http(conn, connection_properties, lifetime, tx, h2_config)
     }
   }
 }
@@ -1031,6 +1094,11 @@ where
 
   let lifetime = resource.lifetime();
 
+  let h2_config = {
+    let state = state.borrow();
+    *state.borrow::<Http2Config>()
+  };
+
   let listen_properties_clone: HttpListenProperties = listen_properties.clone();
   let handle = spawn(async move {
     loop {
@@ -1043,6 +1111,7 @@ where
         &listen_properties_clone,
         lifetime.clone(),
         tx.clone(),
+        h2_config,
       );
     }
     #[allow(unreachable_code)]
@@ -1079,11 +1148,17 @@ where
   let (tx, rx) = tokio::sync::mpsc::channel(10);
   let resource: Rc<HttpJoinHandle> = Rc::new(HttpJoinHandle::new(rx));
 
+  let h2_config = {
+    let state = state.borrow();
+    *state.borrow::<Http2Config>()
+  };
+
   let handle = serve_http_on::<HTTP>(
     connection,
     &listen_properties,
     resource.lifetime(),
     tx,
+    h2_config,
   );
 
   // Set the handle after we start the future

ext/http/lib.rs

@@ -87,6 +87,7 @@ mod service;
 mod websocket_upgrade;
 
 use fly_accept_encoding::Encoding;
+pub use http_next::Http2Config;
 pub use http_next::HttpNextError;
 pub use request_properties::DefaultHttpPropertyExtractor;
 pub use request_properties::HttpConnectionProperties;
@@ -134,6 +135,12 @@ deno_core::extension!(
     http_next::op_http_cancel,
   ],
   esm = ["00_serve.ts", "01_http.js", "02_websocket.ts"],
+  options = {
+    h2_config: Http2Config,
+  },
+  state = |state, options| {
+    state.put(options.h2_config);
+  }
 );
 
 #[derive(Debug, thiserror::Error)]

runtime/snapshot.rs

@@ -300,7 +300,9 @@ pub fn create_runtime_snapshot(
       deno_cron::local::LocalCronHandler::new(),
     ),
     deno_napi::deno_napi::init_ops_and_esm::<Permissions>(),
-    deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(),
+    deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(
+      deno_http::Http2Config::default(),
+    ),
     deno_io::deno_io::init_ops_and_esm(Default::default()),
     deno_fs::deno_fs::init_ops_and_esm::<Permissions>(fs.clone()),
     deno_node::deno_node::init_ops_and_esm::<Permissions>(None, fs.clone()),

runtime/web_worker.rs

@@ -488,7 +488,9 @@ impl WebWorker {
       ),
       deno_cron::deno_cron::init_ops_and_esm(LocalCronHandler::new()),
       deno_napi::deno_napi::init_ops_and_esm::<PermissionsContainer>(),
-      deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(),
+      deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(
+        deno_http::Http2Config::default(),
+      ),
       deno_io::deno_io::init_ops_and_esm(Some(options.stdio)),
       deno_fs::deno_fs::init_ops_and_esm::<PermissionsContainer>(
         services.fs.clone(),

runtime/worker.rs

@@ -405,7 +405,9 @@ impl MainWorker {
       ),
       deno_cron::deno_cron::init_ops_and_esm(LocalCronHandler::new()),
       deno_napi::deno_napi::init_ops_and_esm::<PermissionsContainer>(),
-      deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(),
+      deno_http::deno_http::init_ops_and_esm::<DefaultHttpPropertyExtractor>(
+        deno_http::Http2Config::default(),
+      ),
       deno_io::deno_io::init_ops_and_esm(Some(options.stdio)),
       deno_fs::deno_fs::init_ops_and_esm::<PermissionsContainer>(
         services.fs.clone(),