header set proxy ip: HTTP request header set proxy IP (X-Forwarded-For) method

Manually hooking up a proxy to a request header? Try this wild trick

Guys may have encountered this situation: some sites are particularly sensitive to IP addresses, not moving on the blocking of flow restrictions. At this time, many people's first reaction is on the proxy software, but today to teach you a more covert method ---Modify the X-Forwarded-For field in the HTTP request header directlyThe

The trick, to put it bluntly.Spoof a fake IP in the request headerIt's like filling in a collection point address when you're shopping online. But note that this trick is not foolproof, depending on the target site to recognize this field. Tested down, against ordinary anti-climbing mechanism effect is okay, if you encounter professional-level protection or have to use a serious proxy IP.

 Python Examples (requests library)
import requests

headers = {
    'X-Forwarded-For': '203.0.113.45', fill in any fake IP
    'User-Agent': 'Mozilla/5.0...'
}

response = requests.get('https://目标网站', headers=headers)

Hands on to change the request header

Here's an example of a three-step crawler scenario:

1. create a new headers dictionary in the code (don't use the default request headers)
2. Fill in a fake IP with the correct format (don't use an intranet address like 192.168)
3. Randomize IPs for each request (don't always use the same address)

Focused Reminder:This method is essentially justblindfoldIf the web server is serious about checking the real IP, it will be exposed in minutes. This time on the real proxy, such as dynamic residential IP with ipipgo, directly to the proxy channel to change the real export IP.

Comparison Table of Real and Fake Agents

QA session

Q: Why am I still blocked even though I've set the XFF header?
A: Eighty percent of the site is enabled TCP layer IP verification, this time must use the real proxy. Recommended ipipgo's dynamic residential package, 7 more than 1 G flow, IP pool automatically refreshed every hour.

Q: What if I need to switch IP frequently?
A: Go directly to their API extraction function and write a rotation logic in the code. Remember to set the whitelist authorization to avoid IP theft by others.

// Node.js example
const axios = require('axios');

const getProxy = async () => {
  const {data} = await axios.get('https://api.ipipgo.com/getproxy')
  return data.ip + ':' + data.port
}

How to choose a reliable agent

Having used seven or eight proxy services, ipipgo has two particularly useful features:
1. Client automatically switches IP(Less work than browser plug-ins)
2. Volume-based billing without the pitfalls(Unlike some platforms that force a monthly subscription)

Their static residential IPs are suitable for scenarios that require a fixed address, such as social media operations. Although 35 dollars a month is a little expensive, but the victory is that the IP is clean and not easy to be winded.

A final word of advice:Don't take free agents for granted.Those IPs have been used for a long time. If you really want to use it for a long time, it's more cost-effective to spend a little bit of money on professional services, so you don't have to toss half a day and still get blocked.