快递限制上传速度

Question

Is it possible to limit the upload speed of a file in express?

Example: The user has 10Mbp/s of internet and I want to limit then to only upload 1/10 of him internet speed.

I attempted to use the module throttle as this post says https://stackoverflow.com/a/32340972/13539397 but doesn't seem to work.

My code:

const Throttle = require("throttle");

route.put("/api/upload", (req, res, next) => {
    req.pipe(new Throttle(1)).pipe(fs.createWriteStream(join(__dirname, "./file.png")));
})

Answer 1

Use the package express-throttle-bandwidth instead

var express = require('express')
var throttle = require('express-throttle-bandwidth');
var app = express()
app.use(throttle(100000)); // limits to 100000 bps

app.put("/api/upload", (req, res, next) => {
    req.pipe(fs.createWriteStream(join(__dirname, "./file.png"));
})

Since this limits the connection of the instance, use this instance only for file upload

You can also use express-throttle

var express = require("express");
var throttle = require("express-throttle");
  
var app = express();
  
// Allow 5 requests at any rate with an average rate of 5/s
app.put("/api/upload",throttle({ "rate": "5/s" }), (req, res, next) => {
    req.pipe(fs.createWriteStream(join(__dirname, "./file.png"));
})