curl_cffi library application: anti-fingerprint request technology

What's so great about the curl_cffi library? Hands on to break through the anti-crawl blockade

Brothers engaged in data crawling understand, now the site's anti-climbing mechanism is more and more perverted. Last week I helped a friend to engage in e-commerce price monitoring, ordinary requests directly blocked IP, this time it is necessary to move thecurl_cffiThis artifact. This thing emulates the TLS fingerprints of real browsers, paired with ouripipgoof the dynamic agent pool, the anti-climbing system simply can't tell if it's a real person or a machine.

Browser-level request masquerading in three steps

Load the library first and then match the agent, two lines of code and you're off and running:

pip install curl_cffi
from curl_cffi import requests

proxies = {"http": "http://用户名:密码@proxy.ipipgo.io:31112"}
resp = requests.get("https://目标网站",
                   impersonate="chrome110",
                   resp = requests.get("", impersonate="chrome110", proxies=proxies)

Watch this space.User name and passwordTo change to your own authentication information generated in the ipipgo backend, thechrome110This parameter means to disguise as the latest version of Chrome. In practice, with this configuration, 200 consecutive requests did not trigger a ban.

Anti-fingerprint three-piece kit

Here's a list of configurations for you to follow and just copy your homework:

A practical guide to avoiding the pit

Last week a client used a proxy he had built himself and it was still recognized. Then he switched to usingipipgo's Dedicated Enterprise Proxy, with the following code, the success rate is pulled directly to 98%:

import random
from curl_cffi import requests

def stealth_request(url).
     Randomize browser fingerprints one at a time
    browsers = ["chrome110", "safari16", "edge101"]
    proxies = {"http": f "http://user:{random.choice(ipipgo_password_pool)}@gateway.ipipgo.io"}

    resp = requests.get(
        url,
        impersonate=random.choice(browsers),
        proxies=proxies,
        headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64...)}
    )
    return resp

The key here isReplace proxy authentication information and browser fingerprint at the same timeProxy pool support for ipipgoAutomatic forensic rotationIt's so much less work than building your own agent.

Frequently Asked Questions QA

Q: Why do I have to use a proxy IP?
A: Directly exposing the local IP is like running around naked, using ipipgo's proxy is equivalent to wearing a bulletproof vest, which can both hide the real IP and break through the single IP request limit.

Q: Can't I use the free agent?
A: The free agent has long been blacked out by the anti-climbing system, ipipgo'sHigh quality server room IP+Real User Residential IPMixed scheduling is the prudent solution.

Q: Do I need to maintain the request header myself?
A: curl_cffi will automatically generate the latest version of the browser's standard request header, with ipipgo's IP for geolocation binding is more realistic, such as the United States IP with the English language header.

Tell the truth.

Technical program again cattle, no reliable agent is also useless. Our team has tested seven or eight agents on the market, and finally selected ipipgo on three points:Fingerprint library is up-to-date(Weekly synchronized browser updates),High IP purity(self-built server room + compliant carrier partnership),Response is timely enough(Customer service must return work orders within 10 minutes). Recently they had a campaign to give away 5G of traffic to new users, so I suggest going directly to the website to jack in a test package to try the waters.