test: add http.createServer inside VM integration test

Verifies that CJS scripts using http.createServer can listen on a port
and respond to HTTP requests through the kernel socket table.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: NathanFlurry

packages/nodejs/test/http-server.test.ts

@@ -0,0 +1,71 @@
+/**
+ * Tests for http.createServer inside the V8 runtime.
+ *
+ * Verifies that CJS scripts using http.createServer can listen on a port
+ * and respond to HTTP requests routed through the kernel's socket table
+ * and HostNetworkAdapter.
+ */
+
+import { describe, it, expect, afterEach } from 'vitest';
+import { createNodeRuntime } from '../src/kernel-runtime.ts';
+import { createNodeHostNetworkAdapter } from '../src/host-network-adapter.ts';
+import { createKernel, createInMemoryFileSystem, allowAll } from '@secure-exec/core';
+import type { Kernel } from '@secure-exec/core';
+
+describe('http.createServer inside VM', () => {
+	let kernel: Kernel;
+
+	afterEach(async () => {
+		await kernel?.dispose();
+	});
+
+	it('CJS http server listens and responds to requests', async () => {
+		kernel = createKernel({
+			filesystem: createInMemoryFileSystem(),
+			hostNetworkAdapter: createNodeHostNetworkAdapter(),
+			permissions: allowAll,
+		});
+		await kernel.mount(createNodeRuntime());
+
+		const serverScript = `
+const http = require("http");
+const server = http.createServer((req, res) => {
+  res.writeHead(200, { "Content-Type": "application/json" });
+  res.end(JSON.stringify({ status: "ok", method: req.method, url: req.url }));
+});
+server.listen(0, "0.0.0.0", () => {
+  console.log("LISTENING:" + server.address().port);
+});
+`;
+		await kernel.vfs.writeFile('/tmp/server.js', serverScript);
+
+		let resolvePort: (port: number) => void;
+		const portPromise = new Promise<number>((resolve) => {
+			resolvePort = resolve;
+		});
+
+		const proc = kernel.spawn('node', ['/tmp/server.js'], {
+			onStdout: (data) => {
+				const text = new TextDecoder().decode(data);
+				const match = text.match(/LISTENING:(\d+)/);
+				if (match) resolvePort(Number(match[1]));
+			},
+		});
+
+		const port = await portPromise;
+		expect(port).toBeGreaterThan(0);
+
+		// Make a request to the server running inside the VM
+		const response = await globalThis.fetch(`http://127.0.0.1:${port}/test`);
+		expect(response.ok).toBe(true);
+
+		const json = await response.json();
+		expect(json).toEqual({
+			status: 'ok',
+			method: 'GET',
+			url: '/test',
+		});
+
+		proc.kill();
+	}, 30_000);
+});