Proxy Lite

A web proxy is a web application that is installed on a web server. It acts as an intermediary for downloading certain content from various websites. The user gets the opportunity, thanks to the web proxy, to remain anonymous while downloading all kinds of web resources. Web proxies are good for such tasks as speeding up the loading of websites, providing anonymous access to websites, bypassing restrictions and gaining access to closed websites.

And it depends on what purpose the proxy is used for. But you should definitely give preference to paid proxies. They are more reliable, always available, and with that comes a guarantee of privacy. Unfortunately, personal data is often stolen from free proxies.

To run GUI autotests in GitLab CI\CD using Docker, Selenium, and PyTest, you can follow these steps:

1. Create a .gitlab-ci.yml file in the root directory of your project. This file will define the pipeline and the jobs for your CI\CD process.

2. Configure the pipeline to use the appropriate image for your tests. In this case, you can use a Python image with the required dependencies installed.

3. Define the before_script section to set up the environment for the tests, including installing the necessary packages and downloading the required drivers for Selenium.

4. Define the test job to run the PyTest tests using the Selenium WebDriver.

Here's an example of a .gitlab-ci.yml file:

stages:
  - test

variables:
  SELENIUM_CHROME_DRIVER: '102.0.5005.62'
  SELENIUM_FIREFOX_DRIVER: '0.26.0'

image: python:3.8

cache:
  paths:
    - .venv
    - requirements.txt

before_script:
  - apt-get update -qq
  - apt-get install -y --no-install-recommends \
      build-essential \
      wget \
      xvfb \
      xvfb-run
  - pip install --upgrade pip
  - pip install --quiet --upgrade pytest
  - pip install --quiet selenium
  - pip install --quiet webdriver-manager
  - wget https://github.com/SeleniumHQ/selenium/releases/download/v${SELENIUM_CHROME_DRIVER}/chromedriver_linux64.zip
  - unzip chromedriver_linux64.zip chromedriver
  - wget https://github.com/SeleniumHQ/selenium/releases/download/v${SELENIUM_FIREFOX_DRIVER}/geckodriver-v${SELENIUM_FIREFOX_DRIVER}
  - mv geckodriver-v${SELENIUM_FIREFOX_DRIVER} geckodriver

test:
  stage: test
  script:
    - pytest tests/
  tags:
    - selenium
  artifacts:
    reports:
      - html
  only:
    - master
    - merge_requests

This .gitlab-ci.yml file defines a single stage called test that runs the PyTest tests in the tests/ directory. The before_script section installs the necessary dependencies, downloads the Selenium WebDriver for Chrome and Firefox, and sets up the environment for running the tests.

The tags: - selenium line ensures that the job runs on a runner with the selenium tag, which should have the appropriate Selenium WebDriver installed. The artifacts: reports: - html line enables the generation of HTML reports for the test results.

The only: - master - merge_requests line specifies that the tests should be run on every commit to the master branch and on every merge request.

Once you've set up the .gitlab-ci.yml file, commit and push it to your repository. Then, create a new merge request or push to the master branch to trigger the CI\CD pipeline and run the GUI autotests using Docker, Selenium, and PyTest.

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

SIP is a virtual telephony service. A proxy server in this case is used to collect traffic, its conversion and further transmission to the subscriber via cellular communication. It is mainly used by call centers to communicate with customers.