Using a proxy with a login in tools that only take IP and port

How a forwarder works

A forwarder is a tiny proxy that runs on your own computer. Your program connects to it without a login. The forwarder then connects to the real proxy and adds the username and password itself. To your program, the proxy is simply 127.0.0.1 and a port.

With gost

gost is a single program for Windows, macOS and Linux. One command starts a forwarder on port 8899:

Shell

gost -L=:8899 -F=http://USERNAME:PASSWORD@resi.piratproxies.com:8080

Now give your tool the proxy 127.0.0.1 with port 8899, and no login. Check it:

Shell

curl -x http://127.0.0.1:8899 https://api.ipify.org

With mitmproxy

If you already use mitmproxy, its upstream mode does the same job:

Shell

mitmdump --mode upstream:http://resi.piratproxies.com:8080 --upstream-auth USERNAME:PASSWORD -p 8899

In Node.js

The proxy-chain package starts a forwarder from code and gives you its address, which is convenient for Puppeteer and Selenium scripts:

Node.js

const proxyChain = require('proxy-chain');

(async () => {
  const local = await proxyChain.anonymizeProxy('http://USERNAME:PASSWORD@resi.piratproxies.com:8080');
  console.log(local); // http://127.0.0.1:<port>, no login needed
})();

One forwarder per address

A forwarder carries one username. To use several IP addresses at once, start several forwarders on different ports, each with a different session ID in its username.

Keep forwarders on 127.0.0.1. A forwarder that listens on your network lets anyone on that network use your plan.

Questions