HTTP Proxy: Web crawling dedicated proxy settings and protocol details

These days to engage in data capture without a proxy IP, you are afraid to be pulled by the website black family bucket.

Old iron is not recently found, with a script to catch the price of a commodity is always blocked IP, hard work to write the crawler program running on the run on the hiatus? This is because the target site's anti-climbing mechanism has evolved to the "would rather kill a thousand wrong" degree of perversion. At this time we have to sacrifice our life preservation weapon -HTTP proxy IP, especially for pros like ipipgo, is simply the renewal elixir for data workers.

Proxy IP what exactly is the principle of operation

To give a grounded example, you had to personally go to the supermarket to see the price (direct access to the site), and now changed to let a different generation of small brother (proxy IP) to help you run errands. Every time you change a different brother to ask the price, the supermarket manager (web server) simply do not recognize the same person in the matter. ipipgo home of 90 million residential IP resource pool, equivalent to at any time to mobilize the world's more than 240 countries on behalf of the purchase team, this lineup is luxurious enough, right?

Hands-on guide to configuring proxies (with a guide to avoiding the pitfalls)

Now the mainstream programming languages have built-in proxy support, take Python's requests library as an example:

proxies = {
    "http": "http://用户名:密码@gateway.ipipgo.net:端口",
    "https": "http://用户名:密码@gateway.ipipgo.net:端口"
}
response = requests.get("destination URL", proxies=proxies)

Pay attention to a fewThe key point that kills me.::
1. Don't use free agents, they're worse than winning the lottery!
2. Residential IPs have more than 3 times higher survival rate than server room IPs
3. Dynamic IPs remember to set the automatic switching frequency (adjustable in the background by ipipgo)

There is a way to choose the agreement

ipipgo多协议支持的好处这时候就显出来了，遇到复杂情况直接后台切换协议，不用重新配置连接参数。

Practical QA First Aid Kit

Q: What should I do if I always get a connection timeout?
A：First check whether the proxy address has been copied incorrectly, and then use the "IP survival detection" function provided by ipipgo, it is recommended to open 3-5 spare channels at the same time.

Q: What is the situation of returning 403 error?
A: 80% is identified by the site fingerprints, hurry to open the "browser environment simulation" function in the background of ipipgo, remember to check the randomization of the request header parameters!

Q: What should I do if I need to handle multiple tasks at the same time?
A: on ipipgo'smultithreaded agent poolFunctions, each thread is assigned an independent IP, crawling efficiency is directly doubled and not afraid of being blocked!

Why do the pros go with ipipgo?

Any old bird who has used seven or eight proxy services knows that dropping the ball when it counts can kill a person. ipipgo's three greatest hits really do hit the spot:
1. Real residential IPs come with whitelisting attributes (unlike server room IPs that come with suspicion)
2. Exclusive IP warm-up technology, new IP survival rate increased by 60%
3. Seconds switching without lagging, can also be as stable as a dog during peak hours

And finally, the big truth, in the business of data crawling.The right tool for the job is half the battle.. Instead of tossing free proxy waste of time, it is better to directly use ipipgo such professional players, especially their dynamic residential IP pool, who use who knows the fragrance. Of course, how to play around also depends on business needs, it is recommended to jerk a trial version of hands-on experience.