Get test account for 60 minutes
Register an account and get a proxy for the test. You do not need to fill payment data. Support most of popular tasks: search engines, marketplaces, bulletin boards, online services, etc. tasksSimple tool for complete proxy management - purchase, renewal, IP list update, binding change, upload lists. With easy integration into all popular programming languages, PapaProxy API is a great choice for developers looking to optimize their systems.
Quick and easy integration.
Full control and management of proxies via API.
Extensive documentation for a quick start.
Compatible with any programming language that supports HTTP requests.
Ready to improve your product? Explore our API and start integrating today!
And 500+ more programming tools and languages
A VPN server address is an IP address or domain name through which you access the Internet. All traffic will be redirected through it. And the address is specified by the user, you can get it directly from the VPN-service, which provides such a service.
To scrape images in C#, you can use the HTMLAgilityPack library for parsing HTML and retrieving image URLs. Here's a basic example
Install HTMLAgilityPack
You can install the HTMLAgilityPack NuGet package using the following command in the Package Manager Console:
Install-Package HtmlAgilityPack
Write a C# script to scrape images:
using System;
using System.Collections.Generic;
using HtmlAgilityPack;
class Program
{
static void Main()
{
string url = "https://example.com"; // Replace with the URL of the page you want to scrape images from
// Download HTML content from the URL
HtmlWeb web = new HtmlWeb();
HtmlDocument document = web.Load(url);
// Extract image URLs
List imageUrls = ExtractImageUrls(document, url);
// Print the extracted image URLs
foreach (string imageUrl in imageUrls)
{
Console.WriteLine(imageUrl);
}
}
static List ExtractImageUrls(HtmlDocument document, string baseUrl)
{
List imageUrls = new List();
// Select image elements using XPath
var imageElements = document.DocumentNode.SelectNodes("//img[@src]");
if (imageElements != null)
{
foreach (var imageElement in imageElements)
{
// Extract image URL from the src attribute
string imageUrl = imageElement.GetAttributeValue("src", "");
// Make the URL absolute if it's a relative URL
imageUrl = new Uri(new Uri(baseUrl), imageUrl).AbsoluteUri;
// Add the URL to the list
imageUrls.Add(imageUrl);
}
}
return imageUrls;
}
}
This script uses HTMLAgilityPack to load the HTML content of a webpage and extract image URLs using XPath. The ExtractImageUrls method selects image elements with the XPath query "//img[@src]", retrieves the src attribute, and converts relative URLs to absolute URLs.
Run the script:
Replace the url variable with the URL of the webpage you want to scrape images from.
Run the script to see the list of image URLs.
To check if a port is available over UDP, you can try binding to the port for a short period. If the binding is successful, the port is available. If it fails, the port is already in use. Here's a simple example in Python:
import socket
def is_port_available(port, host='127.0.0.1', timeout=2):
with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
try:
sock.bind((host, port))
sock.settimeout(timeout)
return True
except OSError:
return False
finally:
sock.close()
if __name__ == "__main__":
port = 12345
if is_port_available(port):
print(f"Port {port} is available.")
else:
print(f"Port {port} is not available.")
In this example, the is_port_available function creates a UDP socket and attempts to bind to the specified port and host. If the binding is successful, the function returns True, indicating that the port is available. If the binding fails, the function returns False, indicating that the port is already in use.
A proxy server acts as an intermediary between the client and the requested Internet resource. It is assigned the role of a kind of gateway or filter, which is responsible for submitting a request, receiving the required information and providing it to the user. The proxy server, if necessary, can make changes in incoming and outgoing data, the nature of which will depend on the type of proxy and its settings.
There are many free VPN services. But it is not safe to use them. After all, they are just engaged in parsing. That is, they collect information about users. Most often - their IP-addresses, as well as text data (these are search queries and their personal information).
What else…