Keeps track of a server's open sockets so they can be destroyed at a moment's notice. This way, the server connection can be killed very fast.

npm install killable

Using express: ('server' in the example is just an http.server, so other frameworks or pure Node should work just as well.)

var killable = require('killable');

var app = require('express')();
var server;

app.route('/', function (req, res, next) {
  res.send('Server is going down NOW!');

  server.kill(function () {
    //the server is down when this is called. That won't take long.
  });
});

var server = app.listen(8080);
killable(server);

The killable module is callable. When you call it on a Node http.Server object, it will add a server.kill() method on it. It returns the server object.

server.kill([callback]) closes all open sockets and calls server.close(), to which the callback is passed on.

Inspired by: http://stackoverflow.com/a/14636625

ISC