Free Proxy Server Sites: Free Proxy Server Resources

Are free proxy servers reliable or not? First look at these points

Nowadays, you can find dozens of free proxy sites in a random search on the internet, but90% are all pitsThe most important thing is that you can't use the proxy IP to access the Internet. Some proxy IP with two minutes on the failure, some secretly record your Internet data, more exaggerated will also be stuffed into your computer advertising plug-ins. Last month I tried a website's free proxy, the results of the browser home page was changed to a website, angry directly reinstalled the system.

There are two main types of free agents:

• Open proxy: anyone can use it at a snail's pace
• Temporary Trial: Experiential Products Released by Serious Service Providers

If you are in a hurry to deal with crawler tasks or grab a limited number of products, it is recommended that you look directly at the back of the recommended stable solution, so as not to waste time tossing.

Hands on with picking free agent resources

First of all, a cold knowledge - a lot of free proxy sites are actually taking the user's device as a node, before the one called Hola was exposed to secretly share the user's bandwidth. So when you see a site that requires the installation of plug-ins, quickly click the upper right corner to close.

A reliable free resource has to fulfill three conditions:

1. furnishreal time updateThe IP list of the
2. annotate (e.g. a character with its pinyin)geographic locationand responsiveness
3. be in favor ofMultiple protocols(HTTP/HTTPS/SOCKS5)

For example, ipipgo will release 200 free test IP every day, although it can only be used for 1 hour, but at least it is a serious server room resources. Sign up with a cell phone number to verify the next can be claimed, than those who have to pay attention to ten public number of the site is much more real.

The right way to open a free agent

Don't just shove the IP into the code when you get it, do a survival check first. I'll share a bash script I use:

curl -x http://代理IP:端口 --connect-timeout 5 https://api.ipipgo.com/check

This command measures whether the IP is available or not, and also shows the actual geographic location. If it returns "Connection refused", try another one.

For those who need long term stability, it is recommended to go directly to ipipgo's Dynamic Residential Proxy. Theirpay-per-use modelEspecially suitable for small and medium-sized projects, 1GB of traffic is only a few cents, cheaper than drinking milk tea. The key is that the IP pool is updated daily 20%, and there is no need to worry about being sealed.

QA time: the pitfalls you may have encountered

Q: Why does the free agent often fail to connect?
A: Because there are too many people using it at the same time, it is recommended to avoid the peak hours of 10:00 am and 8:00 pm

Q: How can I prevent the proxy from leaking the real IP?
A: Double verification is the safest, first turn on IP whitelisting in the ipipgo console, and then with the request signature function

Q: Which agent should I choose for my crawler program?
A: The data volume is less than 10,000 items / day can use free resources, more than this amount directly on the commercial agent. ipipgotiered pricingEspecially developer-friendly, the larger the usage the lower the unit price

Lastly, I would like to remind you that there are a lot of fake websites that imitate ipipgo. Recognize the official website with the blue certification mark, don't be fooled by those domain names with more letters. If you encounter technical problems, their customer service response speed is faster than a delivery boy, personally test 3:00 a.m. can find people.