The dropped baton

1const http = require('node:http');2const chain = [3  (req, res, next) => { console.log('logger'); next(); },4  (req, res, next) => { console.log('auth checks'); /* no next(), no res.end() */ },5  (req, res) => { console.log('handler'); res.end('ok'); },6];7function run(req, res, i) {8  chain[i](req, res, () => run(req, res, i + 1));9}10const server = http.createServer((req, res) => run(req, res, 0));11server.listen(0, async () => {12  const { port } = server.address();13  try {14    await fetch(`http://localhost:${port}`, { signal: AbortSignal.timeout(200) });15  } catch (err) {16    console.log('client: ' + err.name);17  }18  server.closeAllConnections();19  server.close();20});