Empty reply after 2 minutes

[danidev]

Hello,

I'm running a server with pm2 and a node/express application.

There are some computational expensive operations that require more than 2 minutes to give a response and I've used an express middleware called connect-timeout to set the request timeout to 5 minutes. (I know it is not a good practice to keep the connection waiting for so long, but this is an internal tool/batch endpoint and it is acceptable).

I've ecountered this issue with pm2: even if the timeout is set to be longer than 2 minutes on the express side, the pm2 closes anyway the connection after 2 minutes.

I did a test using setTimeout and this is the minimal configuration for testing it:

const express         = require('express');
const timeout         = require('connect-timeout');

redis.flush();

const app = express();
app.use(timeout('5m'));

app.get('/testtimeout/:minutes?', (req, res) => {
  const minutes = req.params.minutes ? parseInt(req.params.minutes) : 1;
  setTimeout(() => {
    res.send('done');
  }, 1000 * 60 * minutes);
});

let port = 9018;

//start
app.listen(port, () => {
  logger.log('* starting server');
  logger.log('* env:', process.env.NODE_ENV);
  logger.log('* port:', port);
  logger.log('*** * * * ***');
});

module.exports = app;

then I run it by pm2

NODE_ENV=production pm2 start app.js -i 0 --name timeout-app

I use curl to test the endpoint:

curl localhost:9018/testtimeout/3

If the time is more than 2 minutes I get:

curl: (52) Empty reply from server

This doesn't happen if I run it in local using nodemon for developing. Is there a way to extend this time to more than 2 minutes?

Thanks!

[gilles-crealp]

Any update on this? I have the same problem.

[vladkrasn]

This seems to be happening to me as well. When an express server is ran using pm2, it times out after two minutes