can jump 404 when that page does not exist

.changeset/red-snakes-fetch.md

@@ -0,0 +1,5 @@
+---
+'@astrojs/node': patch
+---
+
+can jump 404 when that page does not exist

packages/integrations/node/src/middleware.ts

@@ -2,16 +2,17 @@ import type { NodeApp } from 'astro/app/node';
 import type { IncomingMessage, ServerResponse } from 'http';
 import type { Readable } from 'stream';
 import { responseIterator } from './response-iterator';
+import type { Options } from './types';
 
-export default function (app: NodeApp) {
+export default function (app: NodeApp, options: Options) {
 	return async function (
 		req: IncomingMessage,
 		res: ServerResponse,
 		next?: (err?: unknown) => void
 	) {
 		try {
-			const route = app.match(req);
-
+			const route =
+				options.mode === 'standalone' ? app.match(req, { matchNotFound: true }) : app.match(req);
 			if (route) {
 				try {
 					const response = await app.render(req);

packages/integrations/node/src/server.ts

@@ -9,10 +9,10 @@ polyfill(globalThis, {
 	exclude: 'window document',
 });
 
-export function createExports(manifest: SSRManifest) {
+export function createExports(manifest: SSRManifest, options: Options) {
 	const app = new NodeApp(manifest);
 	return {
-		handler: middleware(app),
+		handler: middleware(app, options),
 	};
 }
 

packages/integrations/node/src/standalone.ts

@@ -37,7 +37,7 @@ export function getResolvedHostForHttpServer(host: string | boolean) {
 export default function startServer(app: NodeApp, options: Options) {
 	const port = process.env.PORT ? Number(process.env.PORT) : options.port ?? 8080;
 	const { client } = resolvePaths(options);
-	const handler = middleware(app);
+	const handler = middleware(app, options);
 
 	// Allow to provide host value at runtime
 	const host = getResolvedHostForHttpServer(