fix(ext/node): handle connectionsCheckingInterval option and send 408 for request timeout (#33836)

## Summary

Enables `test-http-server-request-timeout-interrupted-headers` in
node_compat suite.

## Test plan
- [x] `cargo test --test node_compat --
test-http-server-request-timeout-interrupted-headers`

Co-authored-by: Divy Srivastava <me@littledivy.com>

Author: divybot

ext/node/polyfills/_http_server.js

@@ -200,7 +200,9 @@ class ConnectionsList {
 }
 
 function onRequestTimeout(socket) {
-  socketOnError.call(socket, new Error("ERR_HTTP_REQUEST_TIMEOUT"));
+  const err = new Error("ERR_HTTP_REQUEST_TIMEOUT");
+  err.code = "ERR_HTTP_REQUEST_TIMEOUT";
+  socketOnError.call(socket, err);
 }
 
 const STATUS_CODES = {
@@ -686,6 +688,8 @@ const badRequestResponse =
   "HTTP/1.1 400 Bad Request\r\nConnection: close\r\n\r\n";
 const requestHeaderFieldsTooLargeResponse =
   "HTTP/1.1 431 Request Header Fields Too Large\r\nConnection: close\r\n\r\n";
+const requestTimeoutResponse =
+  "HTTP/1.1 408 Request Timeout\r\nConnection: close\r\n\r\n";
 
 function socketOnError(e) {
   // Ignore further errors
@@ -708,6 +712,9 @@ function socketOnError(e) {
         case "HPE_HEADER_OVERFLOW":
           response = requestHeaderFieldsTooLargeResponse;
           break;
+        case "ERR_HTTP_REQUEST_TIMEOUT":
+          response = requestTimeoutResponse;
+          break;
         default:
           response = badRequestResponse;
           break;
@@ -1109,6 +1116,18 @@ function storeHTTPOptions(options) {
     this.keepAliveTimeout = 5_000;
   }
 
+  const connectionsCheckingInterval = options.connectionsCheckingInterval;
+  if (connectionsCheckingInterval !== undefined) {
+    validateInteger(
+      connectionsCheckingInterval,
+      "connectionsCheckingInterval",
+      1,
+    );
+    this.connectionsCheckingInterval = connectionsCheckingInterval;
+  } else {
+    this.connectionsCheckingInterval = 30_000;
+  }
+
   const requireHostHeader = options.requireHostHeader;
   if (requireHostHeader !== undefined) {
     validateBoolean(requireHostHeader, "options.requireHostHeader");

tests/node_compat/config.jsonc

@@ -1709,6 +1709,7 @@
     "parallel/test-http-server-options-incoming-message.js": {},
     "parallel/test-http-server-options-server-response.js": {},
     "parallel/test-http-server-reject-cr-no-lf.js": {},
+    "parallel/test-http-server-request-timeout-interrupted-headers.js": {},
     "parallel/test-http-server-request-timeout-upgrade.js": {},
     "parallel/test-http-server-response-standalone.js": {},
     "parallel/test-http-server-stale-close.js": {},