Curl passes request header: Custom Header Configuration

Can't figure out how to pass Header? Hands on teaching you to play around with custom headers using curl

Have you ever encountered a website that just won't recognize your request? The code is fine but you can't get the data? Most likelyThe request header doesn't match.The first thing we're going to do is to use curl as a tool. Today we will chatter how to use curl as a magic tool, with ipipgo proxy service, the custom Header to play with flowers.

Why do you have to toss the request header?

For example, some websites are like security guards, they have to see your User-Agent before letting you in. There are also some to check the "health code" (Authorization), not with a specific mark is not allowed to enter. At this point, you have to include in the requestsmuggle personal goods (e.g. between individuals), stuffing the Header with the required validation information.

 The most basic way to play (without proxy)
curl -H "User-Agent: MySecretAgent" https://example.com

 Advanced version with ipipgo proxy
curl -x http://user:pass@proxy.ipipgo.com:9021 -H "X-Custom-Data: 2024VIP" https://target-site.com

Curl passes Header's six veins of divine sword

Remember this universal formula:-H followed by the key-value pairs, multiple Header to write more -H. Here's a list of configurations:

Proxy IP+Header Double Sword Combination

Straight to the hardcore example, using ipipgo's residential proxy to simulate mobile access:

curl -x http://user:pass@dynamic.ipipgo.com:9023
-H "User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15"
-H "Accept-Language: zh-CN"
https://m.example-site.com/api/data

There's a pit here:Some sites will detect the proxy protocol headerThis is the time to remember to add a-H "Proxy-Connection: Keep-Alive". Using ipipgo's proxy pool takes care of these details automatically, saving you the trouble!

Record of actual pitfalls

Case 1: An e-commerce site dead-end returns 403
Solution:In the Header addX-Forwarded-For: [exit IP provided by ipipgo]while using ipipgo'sLong-lasting static IP, keeping the IP and Header consistent.

Case 2: API interface prompts signature error
Root causes of the problem:Using a proxy causes the time to be out of sync, patch it in the HeaderDate: $(date -u +'%a, %d %b %Y %T GMT'), in conjunction with ipipgo'sMillisecond IP switchingThe function is perfectly solved.

question-and-answer session

Q：Why doesn't the Header take effect after I add it?
A: Check three things: 1. for spelling errors 2. for proxy override 3. with ipipgo'sRequest Log FunctionView the actual Header issued

Q: What should I do if my proxy IP always times out?
A: 80% are using low quality proxies. Switch to ipipgo'sEnterprise BGP Line, retry mechanism + intelligent routing, stable as a batch.

Q: What if I need to change UA frequently?
A: Directly from ipipgoBrowser FingerprintingThe header information is generated automatically, eliminating the need for manual configuration.

Why ipipgo?

1. ExclusiveHeader pass-through technologyThe customized header is guaranteed not to be tampered with
2. SupportHTTP/2 protocol headerAdvanced Configuration
3. ProvisionHeader Debugging SandboxThe request details can be viewed in real time.
4. Millions of IP pools can be switched at any time, perfectly matching various Header verification scenarios.

Next time you come across a Header validation site, don't freeze. Pull out your curl command, hook up an ipipgo proxy, and to hell with those pesky validation mechanisms!