PHP Curl Proxy SOCKS5

Go through the "Control Panel" to the "Browser Properties" section. Open the "Connections" tab, and then by clicking on the "Network settings" button at the bottom, uncheck the "Proxy server" box. Also uncheck the "Auto-detection" checkbox under "Auto-configuration".

Scraping data from a community wall on VK (Vkontakte) using the VK API requires authentication and making requests to the API endpoints. VK provides an official API that you can use to access various data, including posts from community walls.

Here's a general guide on how to scrape posts from a community wall using the VK API:

1. Create a VK App:

   • Go to the VK Developers website and create a VK app.
   • Obtain the "App ID" and "Secure Key" for your app.

2. Authentication:

   • Get an access token to authenticate your requests. You can use the Implicit Flow for user authentication or the Client Credentials Flow for app authentication.

3. Make API Requests:

   • Use the obtained access token to make requests to the VK API. The endpoint for getting wall posts is wall.get.
   • You'll need the community's ID or screen name to get its wall posts.

Here's an example using Python and the requests library:

import requests

# Replace with your VK app details and access token
app_id = 'your_app_id'
secure_key = 'your_secure_key'
access_token = 'your_access_token'

# Replace with the community ID or screen name
community_id = 'your_community_id_or_screen_name'

# API endpoint for getting wall posts
api_url = f'https://api.vk.com/method/wall.get?owner_id=-{community_id}&count=10&access_token={access_token}&v=5.131'

# Make the API request
response = requests.get(api_url)
data = response.json()

# Extract and print the posts
if 'response' in data and 'items' in data['response']:
    posts = data['response']['items']
    for post in posts:
        print(post['text'])
else:
    print('Error fetching wall posts')

Note: Make sure to handle errors and check the VK API documentation for more details on available parameters and responses.

In UDP, there is no built-in mechanism to know the size of an incoming packet before receiving it. The UDP protocol is a connectionless protocol, meaning it does not establish a connection between the sender and receiver before sending data. This makes UDP fast and efficient but also means that the receiver has no way to know the size of the incoming packet in advance.

When you receive a UDP packet, you can determine its size by examining the received data. In most programming languages, you can access the received data as a byte array or buffer. The size of the packet can be calculated by finding the length of the received data.

For example, in Python, you can use the recvfrom() function to receive a UDP packet and the len() function to calculate its size:

import socket

# Create a UDP socket
server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# Receive a UDP packet
data, address = server_socket.recvfrom(1024)

# Calculate the size of the received packet
packet_size = len(data)

print(f"Received packet of size: {packet_size} bytes")

In this example, the recvfrom() function receives a packet up to 1024 bytes in size, and the len() function calculates the length of the received data, which is the size of the packet.

Keep in mind that the maximum size of a UDP packet is limited by the maximum transmission unit (MTU) of the underlying network, which is typically 1500 bytes. However, it's always a good idea to handle cases where the received packet size exceeds your expectations, as this may indicate a packet fragmentation issue or an error in the communication.

Most often it is used to substitute your real IP address. An example of when this is needed: watching shows on Netflix that are only available to US users. A proxy can be used to make a user logging in from anywhere in the world will be identified by the IP address as a US user. Another option is to test your site through a local web server. A proxy in this case is used to intercept all the traffic in order to analyze it further for errors and failures.

VPN allows you to hide your real IP address, as well as further encrypt your traffic. VPN is also actively used for address spoofing. For example, the user is in the Russian Federation, but by connecting through a VPN server, the site "thinks" that the user is from the United States.