Ejemplos prácticos para clientes y herramientas habituales.

# HTTP(S) proxy
curl -x http://USER-cc-us:PASS@res.proxy-cyber.com:9000 https://api.ipify.org

# SOCKS5 with remote DNS
curl --proxy socks5h://USER-cc-us:PASS@res.proxy-cyber.com:9001 https://api.ipify.org

# Sticky session for 30 minutes, verbose to see the CONNECT
curl -v -x http://USER-cc-us-sid-a1b2c3-ttl-30m:PASS@res.proxy-cyber.com:9000 https://api.ipify.org

https_proxy=http://USER-cc-us:PASS@res.proxy-cyber.com:9000 \
http_proxy=http://USER-cc-us:PASS@res.proxy-cyber.com:9000 \
wget -qO- https://api.ipify.org

# Most CLI tools and many libraries honour these
export HTTP_PROXY=http://USER-cc-us:PASS@res.proxy-cyber.com:9000
export HTTPS_PROXY=http://USER-cc-us:PASS@res.proxy-cyber.com:9000
export NO_PROXY=localhost,127.0.0.1

curl https://api.ipify.org

import requests

proxy = "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"
session = requests.Session()
session.proxies = {"http": proxy, "https": proxy}

r = session.get("https://api.ipify.org", timeout=30)
print(r.text)

# Sticky: build the username per session id
def proxy_for(sid: str, cc: str = "us", ttl: str = "10m") -> str:
    return f"http://USER-cc-{cc}-sid-{sid}-ttl-{ttl}:PASS@res.proxy-cyber.com:9000"

import httpx

proxy = "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"
with httpx.Client(proxy=proxy, timeout=30) as client:
    print(client.get("https://api.ipify.org").text)

# async
# async with httpx.AsyncClient(proxy=proxy) as client: ...

import asyncio
import aiohttp

async def main():
    auth = aiohttp.BasicAuth("USER-cc-us", "PASS")
    async with aiohttp.ClientSession() as session:
        async with session.get("https://api.ipify.org",
                               proxy="http://res.proxy-cyber.com:9000",
                               proxy_auth=auth, timeout=30) as r:
            print(await r.text())

asyncio.run(main())

import scrapy

class IpSpider(scrapy.Spider):
    name = "ip"

    def start_requests(self):
        # HttpProxyMiddleware (enabled by default) reads credentials from the URL
        yield scrapy.Request(
            "https://api.ipify.org",
            meta={"proxy": "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"},
        )

    def parse(self, response):
        yield {"ip": response.text}

import { fetch, ProxyAgent } from "undici";

const dispatcher = new ProxyAgent("http://USER-cc-us:PASS@res.proxy-cyber.com:9000");
const res = await fetch("https://api.ipify.org", { dispatcher });
console.log(await res.text());

import axios from "axios";
import { HttpsProxyAgent } from "https-proxy-agent";

const agent = new HttpsProxyAgent("http://USER-cc-us:PASS@res.proxy-cyber.com:9000");
const { data } = await axios.get("https://api.ipify.org", {
  httpsAgent: agent,
  proxy: false, // let the agent handle it
});
console.log(data);

import { chromium } from "playwright";

const browser = await chromium.launch({
  proxy: {
    server: "http://res.proxy-cyber.com:9000",
    username: "USER-cc-us-sid-a1b2c3-ttl-30m",
    password: "PASS",
  },
});
const page = await browser.newPage();
await page.goto("https://api.ipify.org");
console.log(await page.textContent("body"));
await browser.close();

import puppeteer from "puppeteer";

const browser = await puppeteer.launch({
  args: ["--proxy-server=res.proxy-cyber.com:9000"],
});
const page = await browser.newPage();
await page.authenticate({ username: "USER-cc-us-sid-a1b2c3", password: "PASS" });
await page.goto("https://api.ipify.org");
console.log(await page.evaluate(() => document.body.innerText));
await browser.close();

$ch = curl_init("https://api.ipify.org");
curl_setopt_array($ch, [
    CURLOPT_PROXY          => "http://res.proxy-cyber.com:9000",
    CURLOPT_PROXYUSERPWD   => "USER-cc-us:PASS",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT        => 30,
]);
echo curl_exec($ch);

$client = new \GuzzleHttp\Client();
$response = $client->get('https://api.ipify.org', [
    'proxy'   => 'http://USER-cc-us:PASS@res.proxy-cyber.com:9000',
    'timeout' => 30,
]);
echo $response->getBody();

package main

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

func main() {
    proxyURL, _ := url.Parse("http://USER-cc-us:PASS@res.proxy-cyber.com:9000")
    client := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxyURL)}}
    resp, err := client.Get("https://api.ipify.org")
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()
    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

import okhttp3.*;
import java.net.InetSocketAddress;
import java.net.Proxy;

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("res.proxy-cyber.com", 9000));
OkHttpClient client = new OkHttpClient.Builder()
    .proxy(proxy)
    .proxyAuthenticator((route, response) -> response.request().newBuilder()
        .header("Proxy-Authorization", Credentials.basic("USER-cc-us", "PASS"))
        .build())
    .build();

try (Response res = client.newCall(new Request.Builder().url("https://api.ipify.org").build()).execute()) {
    System.out.println(res.body().string());
}

// java.net.http.HttpClient: Basic auth on CONNECT is disabled by default since Java 8u111.
// Start the JVM with -Djdk.http.auth.tunneling.disabledSchemes= to enable it.

using System.Net;

var handler = new HttpClientHandler
{
    Proxy = new WebProxy("http://res.proxy-cyber.com:9000")
    {
        Credentials = new NetworkCredential("USER-cc-us", "PASS")
    },
    UseProxy = true,
};
using var http = new HttpClient(handler);
Console.WriteLine(await http.GetStringAsync("https://api.ipify.org"));