Mikrotik Proxy

In Node.js, you can introduce delays in your scraping logic using the setTimeout function, which allows you to execute a function after a specified amount of time has passed. This is useful for implementing delays between consecutive requests to avoid overwhelming a server or to comply with rate-limiting policies.

Here's a simple example using the setTimeout function in a Node.js script:

const axios = require('axios'); // Assuming you use Axios for making HTTP requests

// Function to scrape data from a URL with a delay
async function scrapeWithDelay(url, delay) {
  try {
    // Make the HTTP request
    const response = await axios.get(url);

    // Process the response data (replace this with your scraping logic)
    console.log(`Scraped data from ${url}:`, response.data);

    // Introduce a delay before making the next request
    await sleep(delay);

    // Make the next request or perform additional scraping logic
    // ...

  } catch (error) {
    console.error(`Error scraping data from ${url}:`, error.message);
  }
}

// Function to introduce a delay using setTimeout
function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

// Example usage
const urlsToScrape = ['https://example.com/page1', 'https://example.com/page2', 'https://example.com/page3'];

// Loop through each URL and initiate scraping with a delay
const delayBetweenRequests = 2000; // Adjust the delay time in milliseconds (e.g., 2000 for 2 seconds)
for (const url of urlsToScrape) {
  scrapeWithDelay(url, delayBetweenRequests);
}

In this example:

• The scrapeWithDelay function performs the scraping logic for a given URL and introduces a delay before making the next request.
• The sleep function is a simple utility function that returns a promise that resolves after a specified number of milliseconds, effectively introducing a delay.
• The urlsToScrape array contains the URLs you want to scrape. Adjust the delay time (delayBetweenRequests) based on your scraping needs.

Please note that introducing delays is crucial when scraping websites to avoid being blocked or flagged for suspicious activity.

In Selenium, you can find out the URL of a newly opened window by switching to that window and retrieving its URL. Here's a step-by-step guide in Python:

1. Switch to the New Window

After opening a new window, you need to switch the focus of the WebDriver to that window.

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

# Open a new window (e.g., by clicking a link)
new_window_link = driver.find_element_by_link_text("Open New Window")
new_window_link.click()

# Switch to the new window
new_window_handle = driver.window_handles[-1]
driver.switch_to.window(new_window_handle)

In this example, replace "Open New Window" with the actual link text or locator that opens the new window.

2. Retrieve the URL of the New Window

Once you have switched to the new window, you can retrieve its URL using current_url.

new_window_url = driver.current_url
print("URL of the new window:", new_window_url)

This will print the URL of the new window. You can then store it in a variable or use it as needed in your script.

3. Switch Back to the Original Window (Optional)

If you need to switch back to the original window after retrieving the URL from the new window, you can do so using a similar process.

original_window_handle = driver.window_handles[0]
driver.switch_to.window(original_window_handle)

Replace 0 with the index of the original window's handle in the window_handles list.

Here's the complete example:

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://example.com")

# Open a new window (replace with the actual link or action)
new_window_link = driver.find_element_by_link_text("Open New Window")
new_window_link.click()

# Switch to the new window
new_window_handle = driver.window_handles[-1]
driver.switch_to.window(new_window_handle)

# Retrieve the URL of the new window
new_window_url = driver.current_url
print("URL of the new window:", new_window_url)

# Switch back to the original window (optional)
original_window_handle = driver.window_handles[0]
driver.switch_to.window(original_window_handle)

# Continue with your script...

# Close the browser when done
driver.quit()

Make sure to adjust the code based on the actual actions and elements in your application that trigger the opening of a new window.

To run Selenium WebDriver on a Virtual Private Server (VPS), you need to follow these steps:

Choose a VPS provider and set up your VPS instance. Some popular VPS providers include DigitalOcean, Linode, and Vultr.

Connect to your VPS instance using SSH (Secure Shell) and update the package list:

sudo apt-get update

Install the required dependencies:

sudo apt-get install -y chromedriver

Download the appropriate version of the ChromeDriver for your browser version. You can download it from the ChromeDriver download page.

Move the downloaded ChromeDriver binary to a directory in your PATH, for example, /usr/local/bin/:

sudo mv chromedriver /usr/local/bin/

Give the ChromeDriver binary executable permissions:

sudo chmod +x /usr/local/bin/chromedriver

Install the required Python packages:

pip install selenium

Create a Python script to run Selenium WebDriver on your VPS instance:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get('https://example.com')

search_box = WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID, 'search-box')))
search_box.send_keys('your search query')
search_box.send_keys(Keys.RETURN)

driver.quit()

Run the Python script on your VPS instance using SSH:

python your_script.py

A DNS server is a remote computer that receives a domain request from a user device. And it converts it into an IP address. Sometimes it is through the DNS-server that ISPs block sites. And DNS-proxy, respectively, allows you to bypass these restrictions completely.

Incoming and outgoing Internet speeds are important indicators of proxy performance because they directly influence the speed of downloading the required information. The value of the ping is important for estimating the speed - the lower the value, the better. You can find out the real speed of your proxy server with the help of proxy checker.