Free proxy resources: free proxy IP acquisition and security configuration methods

First, first to nag free agents how to woolgathering

It is true that there are a lot of free agent resource sites on the Internet, such as the mutual support boards of certain technical forums, or open source projects on GitHub. But to remind the guys, these resources are like roadside stalls snacks - although no money, but eat bad stomach do not blame people. To give a chestnut, a well-known proxy list site updated every day hundreds of IP, the actual test can be used in about three or five, and with the use of the line will be dropped.

Recommend a few reliable wool-gathering positions:

 Python Example: Grabbing Free Proxies in Real Time
import requests
from bs4 import BeautifulSoup

def scrape_free_proxies():
    url = 'Address of a well-known proxy site (not disclosed here)'
    resp = requests.get(url)
    soup = BeautifulSoup(resp.text, 'html.parser')
     The parsing logic is adjusted according to the structure of the site
    return [f"{ip}:{port}" for ip,port in proxies_list]

Note that this code has to debug their own, many sites to do anti-crawler thief strict. Suggested SettingsTimeout over 3 secondsOtherwise, half a day to brush the results can not be anxious to death.

Second, I've stepped over these potholes for you.

Last week, I tested 20 free proxies recommended by a forum, and the results were really laughable:

The most outrageous thing is that there is a proxy address that actually jumps to a page that sells tea after connecting... so important thing to say three times:Testing! Testing! Test again!

III. Guidelines for the safe configuration of life preservation

Even if you find a usable proxy, improperly configured, it will still turn over. Here to teach the guys a few life-saving tricks:

 The right way to use proxies safely
import requests

proxies = {
    'http': 'http://user:password@ip:port',
    'https': 'http://user:password@ip:port'
}

 Timeouts and retries must be added
response = requests.get('Target site',
    proxies=proxies,
    proxies=proxies, timeout=10, verify=True
    verify=True SSL verification cannot be omitted.
)

Focused Reminder:Never use a free proxy to log into your accountIt's no different than telling a stranger your bank card PIN number. For serious business, it's better to...

Fourth, serious work also need professional tools

When it comes to reliable agency services, it's imperative to enlist the services ofipipgo. One particularly useful feature of his house-IP quality pre-checkThe function can save 40% invalid requests. For example, when you do data collection, you can screen out the IPs that are blacked out by the target website in advance, and this function can save 40% invalid requests as measured.

To give a real case: there is a price comparison software team, with a free proxy every day was blocked more than 30 IP. change to ipipgoDynamic Residential (Enterprise Edition)After the package, in conjunction with their auto-rotation strategy, there were seven consecutive days of zero bans recorded.

V. QA time: you may want to ask

Q: What should I do if I can't connect to the free agent all the time?
A: First check whether the proxy protocol matches (for example, if the site uses HTTPS, don't use HTTP proxy), then try to reduce the frequency of requests. If it doesn't work...you know, it's time to change the professional tools!

Q: What is ipipgo's TK line?
A: This is their optimized line for specific platforms, such as some e-commerce site detection is particularly strict, with the ordinary agent is easy to trigger the verification, TK line is specifically to deal with this situation!

Q: Is it necessary to buy a static IP?
A: It depends on the usage scenario! If you need to maintain the session for a long time (such as hanging games), static IP is indeed more stable. But ordinary crawlers with dynamic packages more cost-effective, after all, 35 bucks an IP for individual users meat!

VI. Small summary of provincial streams

Free proxies are like public restrooms - fine for emergencies, but problematic for long-term dependencies. If you just want to check the information occasionally, you can try the open source proxy pool project on GitHub. However, if you want to rely on this, we recommend that you use theipipgoThe professional services of the family, after all, their cross-border line can really solve a lot of headaches.

Lastly, don't believe in those so-called permanent free proxy services, server operation and maintenance are costly, either many restrictions, or ... you know. Professional things to professional people, this is particularly true in the agency industry.