upload large file failed via express+multer

I tired to uplaod a 7G tar file to my server (via postman) but failed.

I tried to upload same file several times, and my server only recieved 2.8G everytime (spend about 12-15 minutes) then postman's request got some error like read ECONNRESET, write EPIPE.

And my server got an error Unexpected end of multipart data, this error is evoked by multer package.

what I have tried?

• After google the errors, it seems like the problem of connection between client and server disrupt

• I also tried to upload a 3.5G video (because server only recived 2.8G in my question), then it succeed and spend 19 minutes!!

• Then I tar that 3.5G video, and upload it again. Also succeed!

My summary and How can I do?

In beginning, I think the problem is about request timeout, upload directory storage limit, tar file limitation or multer package problem.

• But upload the video (and its tar file) spend more than 12-15 minutes, so it seems not the timeout problem. And also not the tar file problem.

• And the 3.5G video (and its tar file) can be saved in the directory, so it is not the storage limitation problem.

• I execute same code in macOS, and it can uplaod that 7G file!! So, it seems not the problem about multer package.

I have no idea how to solve this problem. Anyone can help me?

My code

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

const app = express()
const server = require('http').Server(app)

const PORT = 5568
const uploader = multer({ dest: '/tmp' }).single('file')

app.post('/upload', (req, res) => {
  uploader(req, res, (err) => {
    if (err) {
      console.log('errrrrr');
      console.log(err);
      return res.status(400).json(err)
    }

    console.log('upload finish!!!')
    return res.status(200).json(req.file)
  })
})

server.listen(PORT, () => {
  console.log(server is running at ${PORT} ...)
})