Proxy for QuickCode

A proxy pool is a database that includes addresses for multiple proxy servers. For example, each VPN service has one. And it "distributes" them in order to the connected users.

Selenium is a powerful tool for automating web browsers, and it has various tools and bindings for different programming languages. If you are specifically interested in Selenium tools for JavaScript, you'll likely be working with the Selenium WebDriver bindings for JavaScript. Here are the key components and tools related to using Selenium with JavaScript

WebDriverJS (Selenium WebDriver for JavaScript)

WebDriverJS, also known as selenium-webdriver for JavaScript, is the official Selenium WebDriver binding for JavaScript. It allows you to write automated tests in JavaScript to control web browsers.

You can install WebDriverJS using npm:

npm install selenium-webdriver

Example code snippet using WebDriverJS

const { Builder, By, Key, until } = require('selenium-webdriver');

(async function example() {
  let driver = await new Builder().forBrowser('chrome').build();
  try {
    await driver.get('https://www.example.com');
    await driver.findElement(By.name('q')).sendKeys('webdriver', Key.RETURN);
    await driver.wait(until.titleIs('webdriver - Google Search'), 1000);
  } finally {
    await driver.quit();
  }
})();

Protractor

Protractor is an end-to-end testing framework specifically designed for Angular applications. It uses WebDriverJS internally and extends it to provide additional features for Angular applications.

Protractor can be installed using npm:

npm install -g protractor

Example Protractor configuration file:

exports.config = {
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: ['example-spec.js']
};

WebdriverIO

WebdriverIO is another popular JavaScript framework for end-to-end testing. It is built on top of WebDriverJS and provides a simplified interface for interacting with browsers.

WebdriverIO can be installed using npm:

npm install webdriverio

Example WebdriverIO test script

const { remote } = require('webdriverio');

(async () => {
    const browser = await remote({
        capabilities: {
            browserName: 'chrome'
        }
    });

    await browser.url('https://www.example.com');
    const title = await browser.getTitle();
    console.log('Title:', title);

    await browser.deleteSession();
})();

Nightwatch.js

Nightwatch.js is a testing framework built on top of WebDriverJS that simplifies the process of writing and executing end-to-end tests.

Nightwatch.js can be installed using npm:

npm install nightwatch

Example Nightwatch.js configuration file

module.exports = {
  'Demo Test': function (browser) {
    browser
      .url('https://www.example.com')
      .waitForElementVisible('body')
      .assert.title('Example Domain')
      .end();
  }
};

In WCF (Windows Communication Foundation), UDP communication is not supported directly as it is a point-to-point communication protocol. However, you can create a custom UDP duplex binding and use callbacks to send and receive data. Here's an example of how to do this:

1. Create a new WCF project or add a new service to an existing project.

2. Define the service contract for the UDP communication. For example:

[ServiceContract]
public interface IUdpService
{
    [OperationContract]
    void SendData(string data);

    [OperationContract]
    string ReceiveData();
}

3. Implement the service contract in a class:

public class UdpService : IUdpService
{
    private const int Port = 12345;
    private readonly UdpClient _udpClient = new UdpClient(Port);

    public void SendData(string data)
    {
        var bytes = Encoding.ASCII.GetBytes(data);
        _udpClient.Send(bytes, bytes.Length);
    }

    public string ReceiveData()
    {
        var bytes = _udpClient.Receive(ref EndPoint);
        var data = Encoding.ASCII.GetString(bytes);
        return data;
    }
}

4. Create a custom UDP duplex binding. Add the following code to a new class:

public class UdpDuplexBinding : Binding, IDisposable
{
    private UdpClient _udpClient;

    public UdpDuplexBinding()
    {
        _udpClient = new UdpClient();
    }

    public override void Close()
    {
        _udpClient?.Close();
    }

    public override void Dispose()
    {
        Close();
        GC.SuppressFinalize(this);
    }

    // Implement other required binding members
}

5. Implement a custom UdpDuplexSessionChannel for the UDP duplex binding. Add the following code to a new class:

public class UdpDuplexSessionChannel : DuplexSessionChannel
{
    private readonly UdpClient _udpClient;

    public UdpDuplexSessionChannel(UdpClient udpClient)
    {
        _udpClient = udpClient;
    }

    protected override void OnOpen(TimeSpan timeout)
    {
        base.OnOpen(timeout);
        _udpClient.EnableBroadcast = true;
    }

    protected override void OnClose()
    {
        _udpClient.Close();
        base.OnClose();
    }

    // Implement other required session channel members
}

6. Create a custom UdpDuplexSession for the UDP duplex binding. Add the following code to a new class:

public class UdpDuplex

On smartphones, when a proxy is turned on, the corresponding indicator (the "VPN" icon) appears in the status bar. In Windows you have to go to "Settings", open "Network and Internet". Under "Proxy Server", if the item "Manual" is activated, it means that the proxy is engaged right now.

Such proxy redirects requests from clients to different servers (globally or within a single local network). It can be used for load balancing in different Internet services, for testing web applications, for secured access to local network servers (all "non-client" traffic is ignored).