Capture connection events of two socket servers

Question

I know I am overthinking this... but the answer is just not clicking.

I have two servers, one a TCP socket server and the other a SockJS server. I need to combine both of their connection events into one super event:

async.parallel({
  tcp: function (done) {
    self._tcp = net.createServer(function (sock) {
      done(null, sock);
    });
  },
  ws: function (done) {
    self._ws = sockjs.createServer(function (sock) {
      done(null, sock);
    });
  }
}, function (err, results) {
   // This never gets fired!!!
   // But I'd like to do stuff here with both 
   // socket instances – you know, like piping =)
});

Originally I had the TCP connection nested within the WS connection, but that's proving to be problematic as it requires a rigid connection sequence. What I really need is an event that is fired when both connections have been established and have access to their respective sock instances. Help jogging the brain would be much appreciated!

Answer 1

This might be overly simple - but looking at the sockjs documentation, there isn't a callback function for createServer() - so it's never going to loop back through the callback of your parallel function.

Try just calling done(null, sock); right after you do socket.createServer(); and you should be all set.

Doc: https://github.com/sockjs/sockjs-node