import requests

username = "USER"
password = "PASS"
proxy = "gw.proxy.cc:4512"

proxies = {
  'http': f'http://{username}:{password}@{proxy}',
  'https': f'http://{username}:{password}@{proxy}'
}

response = requests.request(
    'GET',
    'https://api.ip.cc/',
    proxies=proxies,
)

print(response.text)

import fetch from 'node-fetch';
import createHttpsProxyAgent from 'https-proxy-agent'

const username = 'USER';
const password = 'PASS';
const proxy = 'gw.proxy.cc:4512'

const agent = createHttpsProxyAgent(
  f'http://${username}:${password}@${proxy}'
);

const response = await fetch('https://api.ip.cc/', {
  method: 'get',
  agent: agent,
});

console.log(await response.text());

<?php

$username = 'USER';
$password = 'PASS';
$proxy = 'gw.proxy.cc:4512';

$query = curl_init('https://api.ip.cc/');

curl_setopt($query, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($query, CURLOPT_PROXY, "http://$proxy");
curl_setopt($query, CURLOPT_PROXYUSERPWD, "$username:$password");

$output = curl_exec($query);
curl_close($query);
if ($output)
    echo $output;
?>

package main

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

func main() {
  const username = "USER"
  const password = "PASS"
  const proxy = "gw.proxy.cc:4512"

  proxyUrl, _ := url.Parse(
    fmt.Sprintf(
      "http://%s:%s@%s",
      username,
      password,
      proxy,
    ),
  )

  client := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxyUrl)}}
  request, _ := http.NewRequest("GET",
    "https://api.ip.cc/",
    nil,
  )

  request.SetBasicAuth(username, password)
  response, err := client.Do(request)
  if err != nil {
    fmt.Println(err)
    return
  }

  responseText, _ := ioutil.ReadAll(response.Body)
  fmt.Println(string(responseText))
}

package example;

import org.apache.http.HttpHost;
import org.apache.http.client.fluent.*;

public class Main {
  public static void main(String[] args) throws Exception {

    String username = "USER";
    String password = "PASS";
    String proxyHost = "gw.proxy.cc";
    int proxyPort = 4512;

    HttpHost entry = new HttpHost(proxyHost, proxyPort);
    String query = Executor.newInstance()
        .auth(entry, username, password)
        .execute(Request.Get("https://api.ip.cc/")
        .viaProxy(entry))
        .returnContent()
        .asString();
    System.out.println(query);
  }
}

using System;
using System.Net;

class Example
{
  static void Main()
  {
    var username = "USER";
    var password = "PASS";
    var proxy = "gw.proxy.cc:4512";

    var client = new WebClient();
    client.Proxy = new WebProxy(proxy);
    client.Proxy.Credentials = new NetworkCredential(username, password);
    Console.WriteLine(client.DownloadString("https://api.ip.cc/"));
  }
}

curl -x USER:PASS@gw.proxy.cc:4512 https://api.ip.cc/

require 'uri'
require 'net/http'

uri = URI.parse('https://api.ip.cc/')
proxy = Net::HTTP::Proxy('gw.proxy.cc', 4512, USER, PASS)

req = Net::HTTP::Get.new(uri.path)

result = proxy.start(uri.host,uri.port) do |http|
    http.request(req)
end

puts result.body