Proxy authentication: the username and password format, explained

# the whole login in the proxy URL
curl -x "http://resi-lx_k3m9q2p7xa:[email protected]:7777" \
     https://api.ludaxproxy.com/whoami

# or the login on its own
curl -x "http://gw.ludaxproxy.com:7777" -U "resi-lx_k3m9q2p7xa:YOUR_PASSWORD-country-us" \
     https://api.ludaxproxy.com/whoami

# macOS and Linux (Windows PowerShell: $env:HTTPS_PROXY = "http://...")
export HTTP_PROXY="http://resi-lx_k3m9q2p7xa:[email protected]:7777"
export HTTPS_PROXY="$HTTP_PROXY"

# curl, Python requests, Go and many command-line tools now use the proxy on their own
curl https://api.ludaxproxy.com/whoami

import requests  # pip install requests

proxy = "http://resi-lx_k3m9q2p7xa:[email protected]:7777"

r = requests.get("https://api.ludaxproxy.com/whoami",
                 proxies={"http": proxy, "https": proxy}, timeout=30)
print(r.json())

import { fetch, ProxyAgent } from "undici"; // npm install undici

const proxy = new ProxyAgent("http://resi-lx_k3m9q2p7xa:[email protected]:7777");

const res = await fetch("https://api.ludaxproxy.com/whoami", { dispatcher: proxy });
console.log(await res.json());

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	proxy, _ := url.Parse("http://resi-lx_k3m9q2p7xa:[email protected]:7777")
	client := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxy)}}

	resp, err := client.Get("https://api.ludaxproxy.com/whoami")
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

<?php
$ch = curl_init("https://api.ludaxproxy.com/whoami");
curl_setopt_array($ch, [
    CURLOPT_PROXY => "http://gw.ludaxproxy.com:7777",
    CURLOPT_PROXYUSERPWD => "resi-lx_k3m9q2p7xa:YOUR_PASSWORD-country-us",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 30,
]);
echo curl_exec($ch);

import java.net.*;
import java.net.http.*;

public class Request {
  public static void main(String[] args) throws Exception {
    // Java turns Basic proxy login off for HTTPS tunnels by default: turn it back on first
    System.setProperty("jdk.http.auth.tunneling.disabledSchemes", "");

    URI gateway = URI.create("http://gw.ludaxproxy.com:7777");
    HttpClient client = HttpClient.newBuilder()
        .proxy(ProxySelector.of(new InetSocketAddress(gateway.getHost(), gateway.getPort())))
        .authenticator(new Authenticator() {
          @Override
          protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(
                "resi-lx_k3m9q2p7xa", "YOUR_PASSWORD-country-us".toCharArray());
          }
        })
        .build();

    HttpRequest request = HttpRequest.newBuilder(URI.create("https://api.ludaxproxy.com/whoami")).build();
    System.out.println(client.send(request, HttpResponse.BodyHandlers.ofString()).body());
  }
}

using System.Net;

var handler = new HttpClientHandler
{
    Proxy = new WebProxy("http://gw.ludaxproxy.com:7777")
    {
        Credentials = new NetworkCredential("resi-lx_k3m9q2p7xa", "YOUR_PASSWORD-country-us"),
    },
};
using var client = new HttpClient(handler);
Console.WriteLine(await client.GetStringAsync("https://api.ludaxproxy.com/whoami"));