How to stop downloading when the client cancels the request in nodejs - node.js

Question

In the nodeJs application, I'm downloading a file with Axios. when the client cancels the request I have to stop downloading. After starting downloading How can I stop downloading?
with the following code, I notice that the client cancel its request:
req.on('close', function (err){
// Here I want to stop downloading
});
complete code :
const express = require('express')
const app = express()
const Axios = require('axios')
app.get('/download', (req, res) => {
req.on('close', function (err){
// Here I want to stop downloading
});
downloadFile(res)
})
async function downloadFile(res) {
const url = 'https://static.videezy.com/system/resources/previews/000/000/161/original/Volume2.mp4'
console.log('Connecting …')
const { data, headers } = await Axios({
url,
method: 'GET',
responseType: 'stream'
})
const totalLength = headers['content-length']
let offset = 0
res.set({
"Content-Disposition": 'attachment; filename="filename.mp4"',
"Content-Type": "application/octet-stream",
"Content-Length": totalLength,
// "Range": `bytes=${offset}` // my problem is here ....
});
data.on('data', (chunk) => {
res.write(chunk)
})
data.on('close', function () {
res.end('success')
})
data.on('error', function () {
res.send('something went wrong ....')
})
}

Answer 1

Axios documentation has a section about cancelation.
The code would look like:
// before sending the request
const CancelToken = axios.CancelToken;
const source = CancelToken.source();
// then pass-in the token with request config object
axios.post('/user/12345', {
name: 'new name'
}, {
cancelToken: source.token
});
// upon cancelation
source.cancel('Operation canceled by the user');
Moreover, looks like there's an open issue for supporting AbortController/AbortSignal in Node.js 15+. You can check it out here.