Dynamic long-lasting proxy IP (how dynamic proxies are implemented)
Let's start with this piece of dynamic proxy, in the network world, sometimes we need to be invisible, such as to do some secret things, haha, just kidding. In fact, the dynamic agent is like a mask, so that others can not see the real IP address, as if wearing a vest, so that people can not understand.
Sometimes we need to stay invisible for a long time, this time we need to use dynamic long-lasting proxy IP. This is not an easy thing to do, just like hunting, you need to have the skill to constantly change the position in order to catch the target.
How does dynamic proxy work? First of all, we have to know what dynamic IP means. It's as if dynamic IP is like a chameleon that keeps switching as needed, making it elusive.
Now, let's look at the implementation of dynamic proxies. To implement dynamic proxies, you have to know a little bit of programming, such as writing a program that proxies an IP pool in Python. Let's take a look at the following simple Python code:
"`ipipgothon
import requests
from bs4 import BeautifulSoup
def get_proxy().
proxy = requests.get('http://your_proxy_api.com').text
return proxy
def crawl(url).
proxy = get_proxy()
proxies = {
'http': 'http://' + proxy.
'https': 'http://' + proxy
}
html = requests.get(url, proxies=proxies).text
soup = BeautifulSoup(html, 'lxml')
# do something here
“`
We can see that through a proxy IP pool API, we can constantly get new proxy IP, constantly changing, to maintain the effect of dynamic proxy. This is like a new dress, the appearance is constantly changing, so people can not understand.
The implementation of dynamic agents requires constant optimization and tweaking, just like polishing a sword to be sharper. However, if you master this technology, it's like having a magic cloak that makes it hard to notice and easy to do what you want to do.