Proxy IP Setting cURL Accept Header: cURL Proxy IP Setting Accept Header

When a crawler meets an Accept header, how can a proxy IP help you cover up?

engage in data collection of the old iron know, with curl grab data is like opening a blind box - sometimes the return of the pressure is not the desired content. At this timeAccept headerIt becomes the key to unlocking the right posture, especially with a reliable proxy IP service, which can make you less likely to step into the 80% pit.

What the hell is an Accept head?

Simply put, the client tells the server "I can eat what format data". Just like when you go to a restaurant and order food, you have to tell the waiter whether you want Chinese or Western food. For example, if you set it toapplication/jsonThe server will know to give you json data. If you do not set the right, light is to return garbled, heavy is to serve directly 403.

curl -H "Accept: text/html" http://example.com

Three major scenarios for proxy IP and Accept headers to mess with CPs

1. Disguise browser identity: Some sites are suspicious when they see the default Accept header in curl.
2. Switching Data Formats: precise control with Accept header when returning xml/json data from the same interface
3. Breaking the anti-climbing limit: Work with proxy IP rotation to make the site think it's being accessed by a different user

hands-on practical instruction

Take ipipgo's proxy service as an example of a three-step process:

curl -x http://user:pass@proxy.ipipgo.io:8080
-H "Accept: application/json"
https://target-site.com/api/data

Here's a couple.Easy to roll over.The Point:
- Don't write httpss:// for the proxy address (a few extra s's and you're screwed).
- Username password to urlencode special characters
- Maintain connection multiplexing to avoid frequent authentication

QA First Aid Kit

Q: What should I do if the Accept header is set right or 403?
A: eighty percent of the User-Agent exposed, it is recommended to use ipipgo's dynamic UA proxy pool, automatically adapted to the mainstream browser fingerprints

Q: What should I do if I can't connect to the proxy IP all the time?
A: check the whitelist settings, ipipgo support binding server IP whitelist, do not open the test (focus!)

Q: What should I do if I need to capture pictures and videos?
A: Accept header replaced withimage/, video/Remember to use ipipgo's dedicated download channel, which gives you plenty of bandwidth!

Why do you recommend ipipgo?

I've used 7 or 8 proxy services and ended up locking up ipipgo just to save my ass. He has aIntelligent RoutingThe black technology, can automatically select the fastest node, unlike some service providers always assign you a delay of 200ms + node. The last time I did a competitive analysis, using his proxy + correct Accept header settings, the collection success rate from 47% directly soared to 92%, really fragrant!

Final rant:Don't use free proxies!Blood lesson, before the cheap use of free IP, the results of Accept head by the intermediary tampering, pick back all the ads, almost the father of the party gas spit blood. Now honestly use ipipgo paid package, there are problems can also find technical small brother real-time troubleshooting, this money is worth spending.