ERR_CONNECTION_RESET when upload large file nodejs multer

Question

I'm writing an web application that allow user to upload very large file (up to GB). My technical stack include: nodejs, express, multer and pure html. It works fine for small file. But when I upload big file (127 MB), I got error ERR_CONNECTION_RESET after waiting a while (about 2 minutes ).

I tried extended response time on server, using both req.setTimeout and res.setTimeout but it didn't help. It's may be because frontend waiting to long to get response.

Below is the error I got:

Thank you all.

Answer 1

Increasing the res -timeout for the corresponding upload-route should definitely work. Try doing it like this:

function extendTimeout (req, res, next) {
  // adjust the value for the timeout, here it's set to 3 minutes
  res.setTimeout(180000, () => { // you can handle the timeout error here })
  next();
})

app.post('/your-upload-route', extendTimeout, upload.single('your-file'), (req, res, next) => {
  // handle file upload
})