CAPTCHA: captcha proxy ip crack program

When the crawler meets the CAPTCHA, how to play the proxy IP is reliable?

Friends engaged in data collection know that the CAPTCHA is like a speed limit zone that suddenly appears on the road, and every time you encounter it, you have to step on the brakes. Especially when it comes to picture selection, slider verification of such advanced goods, the traditional methods simply can not play. At this timeproxy IPIt becomes a lifesaver, but many people use it in the wrong position.

The CAPTCHA mechanism and the IP love affair

There are three main metrics to look for in a website's anti-climbing:Request Frequency, Behavioral Trajectory, IP AddressThe first two are easy to fix. The first two are good solutions, just slow down the speed and simulate mouse movement. But IP blocked is like being blacklisted, change a vest to be a new person.

 Typical IP Blocking Scenarios
import requests
for i in range(100):: response = requests.get('')
    response = requests.get('https://目标网站')
    if "CAPTCHA" in response.text: if "CAPTCHA" in response.text.
        print(f "The {i}th request was blocked!")

The right way to open a proxy IP

The difference between a regular agent and a high-end agent is like a public phone and a private line:

With ipipgo.Dynamic Residential AgentsIf you are not able to change the IP address for each request, the website wind control system will see the access records of ordinary users from different regions.

Practical four-step program

1. IP Pool Warm-up: Get at least 50 different C-segment IPs from ipipgo in advance
2. rotation strategy: Immediate IP change every 5 requests or CAPTCHA encounters
3. Request Fingerprints: Randomly switching User-Agent and browser fingerprints
4. failure handling: automatically stuffs failed requests back into the queue

 Sample code (with ipipgo API)
import random
from ipipgo import get_proxy hypothetical SDK method

def make_request(url).
    proxy = get_proxy(type='residential') Get residential proxy
    headers = {'User-Agent': random.choice(UA_LIST)}
    try.
        resp = requests.get(url, proxies={"http": proxy}, headers=headers)
        return resp.text
    except CaptchaEncountered: ipipgo.report_base_countered.
        ipipgo.report_bad_ip(proxy) flagging invalid IPs
        return make_request(url) auto-retry

Frequently Asked Questions QA

Q: Why do I still get a captcha after using a proxy?
A: Check three things: 1. Whether the same IP is used frequently 2. Whether the browser fingerprints are exposed 3. The anonymity level of the proxy IP (we recommend ipipgo's high stash of proxies)

Q: Do I need to maintain my own IP pool?
A: Not at all! ipipgo'sIntelligent Dispatch SystemIt will automatically weed out invalid IPs and also automatically matches the optimal node based on the geographic location of the target site.

Q: What should I do if I encounter Cloudflare protection?
A: The situation has to be solved withResidential Proxy + Browser Fingerprinting EmulationA two pronged approach. ipipgo's dynamic residential IPs in conjunction with their fingerprinting library bypass most 5 second shield detection.

Guide to avoiding the pit

Don't believe those tools that say "permanent anti-Captcha", it's essentiallyoffensive and defensive confrontation. Recommended for ipipgo'sCAPTCHA Dedicated ChannelTheir IP pool is updated daily with more than 20% IP resources, and with the randomization of the request interval (0.5-3 seconds), it is measured to be able to suppress the CAPTCHA trigger rate to within 5%.

One final piece of cold knowledge: some sites will intentionally release some requests tomixed judgment. If you find that you can occasionally skip the CAPTCHA, don't be too happy, you may have entered the honeypot system. This is the right time to use ipipgo's IP cleaning function to change all the associated IPs.