cURL Request Header: Customizing User-Agents and Cookies

What to do when a crawler encounters an anti-crawler? Try this combo

Let's talk about this scenario first: you wrote a crawler script and just ran it for five minutes before the target site blocked your IP. don't be so quick to curse, take out your little notebook and memorize thisgolden partner--Customize User-Agent plus proxy IP. it's like playing a game of chicken, you have to wear a good ghillie suit (disguise the browser), but also learn to snakeskin walk (switch the exit IP).

How do you build a browser ID?

Every website has a security checker at the door, and the User-Agent is your ticket. Defaulting to that string of characters with curl is the equivalent of holding up a sign that says "I'm a robot" and barging in. Here are a few practical tips:

Real-world code example:

curl -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.102 Safari/537.36"
--proxy http://user:pass@gateway.ipipgo.com:9020
https://target-site.com

Look at the proxy address in thegateway.ipipgo.comThis is our secret channel. They keep millions of IPs in their home agent pool, which works better than the capsules in Dragon Ball 7.

Cookies aren't cookies they're passes.

Some sites are like nightclubs, where you have to check your membership card to get in. That's when you have to use cookies. But remember two things:

Take a real case: an e-commerce platform to catch price data, using ipipgo'sDynamic Residential AgentsThe first one is a real user in a different region, with a random User-Agent, and it has been running steadily for three months without flopping.

Hands-on debugging instruction

Three common stupidities that newbies make:

1. Forgetting to turn off local proxies (check IPs with sites like whoer.net)
2. Use an older version of User-Agent (remember to update browser fingerprints regularly)
3. Use an IP until it dies (set up automatic switching frequency, don't be too stingy)

Recommended for ipipgoIntelligent Rotation Model, people will automatically change the IP for you, it's much less of a hassle than doing it manually yourself. It's like the difference between autopilot and manual, you savor it.

Troubleshooting First Aid Kit

Q: How come I'm still blocked even though I've changed my IP?
A: Check these three points: ① Cookie is not with identity mark ② request header is complete ③ IP purity. It is recommended to use ipipgo's exclusive proxy, which is much cleaner than the shared pool.

Q: What about enterprise-level data collection?
A: Directly on ipipgo'sEnterprise Customized ServicesIt supports session keeping and accurate positioning of city-level IPs. last time we helped a financial company to capture competitor data, we relied on this solution to capture millions of pages on a daily basis.

Q: It was fine in beta and crashed online?
A: Eighty percent of the problem is the frequency of requests. Remember this mnemonic:Random delay + IP rotation + head camouflageThe Trinity is the only one that will last. ipipgo's API supports setting the switching frequency, and it is recommended to start debugging from 5-10 seconds/times.

Finally, the last nagging sentence, now the site wind control are on the AI, we also have to use black technology to fight. Instead of tossing your own server, why not go directly to a professional service? After all, time is money, save time to spend more time with your family is not good?