curl Content-Type: Content-Type Setting Guide

When curl meets Content-Type, how to play with proxy IP without rolling over?

The old iron engaged in crawler must have encountered this situation: obviously proxy IP change diligently, the target site or you as a robot seal. At this time eighty percent is yourContent-TypeIn Naked! Today, we'll show you how to use the ipipgo proxy service with the right content type settings by hand, so that the request is disguised in such a way that your own mother won't recognize it.

What exactly is Content-Type a doorstop?

Simply put, this is an "ID card", tell the server what format you send the data. It's like when you go to the bank, wearing slippers or a suit and tie, can the reception be the same? If you don't set up the right proxy with ipipgo, the server will see through your disguise in minutes.

 Error Demonstration (bare bones type):
curl http://example.com

 Correct posture (suited and booted type):
curl -H "Content-Type: application/json"
  --proxy http://user:pass@ipipgo-proxy.com:8080
  http://api.example.com/data

A Survival Guide to Four Common Scenarios

Avoiding the pit: don't shake your hands and follow along

A treasure commodity data collection as an example, first use ipipgo console to choose a residential IP in Zhejiang (why?). You taste your fine taste). Then set it up like this:

curl -X POST
  -H "Content-Type: application/x-www-form-urlencoded; charset=GBK"
  -H "Referer: https://www.taobao.com/"
  --proxy http://vip123:动态密码@zhejiang.ipipgo.io:9023
  -d "q=mobile&page=1"
  "https://s.taobao.com/search"

Note here two tawdry operations: 1) charset with GBK more grounded 2) proxy username with dynamic authentication code, which are ipipgo's special features.

Old Driver QA Time

Q：What should I do if the Content-Type is invalid after setting up the proxy?
A: Ninety percent are using inferior proxies, some service providers will secretly change the request header. Use ipipgo's pure proxy pool that supports native header passthrough.

Q：Why does it return garbled code after using proxy?
A: Check two things: 1) whether the charset in the Content-Type is the same as the actual encoding 2) whether the ipipgo console is enabled with the encoding auto-conversion switch.

Q: How do I keep my content type stable during high concurrency?
A: Use ipipgo's intelligent load balancing and request header template functions together, and it is recommended that each thread be bound to an independent IP+fixed header combination.

The ultimate mystery: human-machine unity

Remember this triangle:Right type of content + real person behavioral IP + reasonable request frequency= Invincible. ipipgo's Residential Proxy comes with real-life device fingerprints, which, in conjunction with the Content-Type settings taught in this article, can make your requests act as if the real user is operating them.

One last egg: enter the promo code in the ipipgo consoleCURL2024The company has a three-day enterprise-level proxy service, which is enough for you to debug all kinds of Content-Type scenarios. Unable to get the problem directly to their technical small brother, the response speed than some of the big companies much faster (you know who I'm talking about).