Add new node static server example

tshemsedinov · tshemsedinov · commit c7405e36e35e · 2022-09-17T23:28:54.000+03:00
diff --git a/native-2022/main.js b/native-2022/main.js
@@ -0,0 +1,47 @@
+'use strict';
+
+const fs = require('node:fs');
+const http = require('node:http');
+const path = require('node:path');
+
+const PORT = 8000;
+
+const MIME_TYPES = {
+  default: 'application/octet-stream',
+  html: 'text/html; charset=UTF-8',
+  js: 'application/javascript; charset=UTF-8',
+  css: 'text/css',
+  png: 'image/png',
+  jpg: 'image/jpg',
+  gif: 'image/gif',
+  ico: 'image/x-icon',
+  svg: 'image/svg+xml',
+};
+
+const STATIC_PATH = path.join(process.cwd(), './static');
+
+const toBool = [() => true, () => false];
+
+const prepareFile = async (url) => {
+  const paths = [STATIC_PATH, url];
+  if (url.endsWith('/')) paths.push('index.html');
+  const filePath = path.join(...paths);
+  const pathTraversal = !filePath.startsWith(STATIC_PATH);
+  const exists = await fs.promises.access(filePath).then(...toBool);
+  const found = !pathTraversal && exists;
+  const streamPath = found ? filePath : STATIC_PATH + '/404.html';
+  const ext = path.extname(streamPath).substring(1).toLowerCase();
+  const stream = fs.createReadStream(streamPath);
+  return { found, ext, stream };
+};
+
+http.createServer(async (req, res) => {
+  const file = await prepareFile(req.url);
+  const statusCode = file.found ? 200 : 404;
+  const mimeType = MIME_TYPES[file.ext] || MIME_TYPES.default;
+  res.writeHead(statusCode, { 'Content-Type': mimeType });
+  file.stream.pipe(res);
+  console.log(`${req.method} ${req.url} ${statusCode}`);
+}).listen(PORT);
+
+console.log(`Server running at http://127.0.0.1:${PORT}/`);
diff --git a/native-2022/main.mjs b/native-2022/main.mjs
@@ -0,0 +1,45 @@
+import * as fs from 'node:fs';
+import * as http from 'node:http';
+import * as path from 'node:path';
+
+const PORT = 8000;
+
+const MIME_TYPES = {
+  default: 'application/octet-stream',
+  html: 'text/html; charset=UTF-8',
+  js: 'application/javascript; charset=UTF-8',
+  css: 'text/css',
+  png: 'image/png',
+  jpg: 'image/jpg',
+  gif: 'image/gif',
+  ico: 'image/x-icon',
+  svg: 'image/svg+xml',
+};
+
+const STATIC_PATH = path.join(process.cwd(), './static');
+
+const toBool = [() => true, () => false];
+
+const prepareFile = async (url) => {
+  const paths = [STATIC_PATH, url];
+  if (url.endsWith('/')) paths.push('index.html');
+  const filePath = path.join(...paths);
+  const pathTraversal = !filePath.startsWith(STATIC_PATH);
+  const exists = await fs.promises.access(filePath).then(...toBool);
+  const found = !pathTraversal && exists;
+  const streamPath = found ? filePath : STATIC_PATH + '/404.html';
+  const ext = path.extname(streamPath).substring(1).toLowerCase();
+  const stream = fs.createReadStream(streamPath);
+  return { found, ext, stream };
+};
+
+http.createServer(async (req, res) => {
+  const file = await prepareFile(req.url);
+  const statusCode = file.found ? 200 : 404;
+  const mimeType = MIME_TYPES[file.ext] || MIME_TYPES.default;
+  res.writeHead(statusCode, { 'Content-Type': mimeType });
+  file.stream.pipe(res);
+  console.log(`${req.method} ${req.url} ${statusCode}`);
+}).listen(PORT);
+
+console.log(`Server running at http://127.0.0.1:${PORT}/`);
diff --git a/native-2022/static/404.html b/native-2022/static/404.html
@@ -0,0 +1 @@
+<h1>File not found</h1>
diff --git a/native-2022/static/index.html b/native-2022/static/index.html
@@ -0,0 +1 @@
+<h1>Hello world</h1>
