File uploads are very slow with large file sizes.

[thanathip41]

const uWS = require('uWebSockets.js');
const port = 9001;
const fs = require('fs');

uWS.App()
.post('/*', (res, req) => {
const header = req.getHeader('content-type');
let buffer = Buffer.from('');
res.onData((ab, isLast) => {
buffer = Buffer.concat([buffer, Buffer.from(ab)]);
if (isLast) {
for (const {name, filename, data} of uWS.getParts(buffer, header)) {
if (name === 'file' && filename) {
fs.writeFileSync(filename, Buffer.from(data));
}
}
res.end('Thanks for the data!');
}
});

res.onAborted(() => {
console.log('Eh, okay. Thanks for nothing!');
});

}).listen(port, (token) => {
if (token) {
console.log('Listening to port ' + port);
} else {
console.log('Failed to listen to port ' + port);
}
});

I'm using example code to write a file, but it takes a long time to complete. How can I fix this?

I'm using a file that is around 700 MB, and it takes about 3 minutes to upload.
** I tested the file upload with http + busboy, and it takes about 11 seconds for the same 700 MB file.

Thank you!