Chapter 4: initial recipe samples

Chapter04/http-server/server.js

@@ -0,0 +1,28 @@
+const http = require('http')
+
+const HOSTNAME = process.env.HOSTNAME || '0.0.0.0'
+const PORT = process.env.PORT || 8080
+
+const server = http.createServer((req, res) => {
+    if (req.method !== 'GET') return error(res, 405)
+    if (req.url === '/todo') return todo(res)
+    if (req.url === '/') return index(res)
+    error(res, 404)
+});
+
+function error(res, code) {
+    res.statusCode = code
+    res.end(`{"error": "${http.STATUS_CODES[code]}"}`)
+}
+
+function todo(res) {
+    res.end('[{"task_id": 1, "description": "walk dog"}]}')
+}
+
+function index(res) {
+    res.end('{"name": "todo-server"}')
+}
+
+server.listen(PORT, HOSTNAME, () => {
+    console.log('Server listening on', server.address())
+})