Websocket server with devtool will auto disconnect about devtool HOT 3 OPEN

i am using devtool with my websocket server and have no trouble i am running it with:

devtool app.js --watch --break

from devtool.

I'm experiencing the same issue with devtool index.js --watch.
I'm using express and socket.io with the following setup:

const http = require('http');
const express = require('express');

const app = express();
const server = http.createServer(app);
const io = require('socket.io')(server);

from devtool.

After fiddling with the cli options I found that the websockets work normally when using --no-node-timers.
I noticed that the first websocket connection succeeds to send a couple of frames back and forth (<1 second) but quickly stalls, and then constantly timesout at 10s, so I'd suspect some race condition taking place.

$ npm list -g --depth 0 | grep devtool
├── [email protected]

$ npm list --depth 0 | egrep 'socket.io|express'
├── [email protected]
├── [email protected]

$ node -v
v5.11.1

$ lsb_release -ds
Ubuntu 16.04 LTS

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