Server Close Event

The server 'close' event and a drain-accurate server.close(cb). Both fire once the server has stopped listening AND every in-flight connection has finished — not synchronously when close is called. Here the server closes itself from its 'listening' callback (no connections in flight), so it drains immediately, fires both handlers in registration order, and the process exits cleanly with no lingering event loop.

'close' event first, then the close(cb) one-shot — the order Node uses.

import http from 'http'

const server = http.createServer((req, res) => {
  res.end('hello from ' + req.url)
})

server.on('close', () => {
  console.log('server close event')
})

server.listen(8090, () => {
  console.log('listening on :8090')
  // Graceful shutdown: the callback settles once the server has fully drained.
  server.close(() => {
    console.log('server fully closed (callback)')
  })
})

View source on GitHubexamples/http/server_close_event.ts

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