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Editor to share with you how to better use the crawler agent, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

In daily network work, many network workers need to use agent IP to help complete tasks, such as common crawler work, marketing posts, online voting, effect supplement and so on. Some people use third-party tools, others write their own code programs, through the docking application interface to automatically call to get IP, and then finish the work.

When using the agent IP to work, we often encounter some problems, such as the software does not work, the agent IP is all invalid, and the return result is empty after the code runs. As a result, I don't know where the problem is, and I don't know where to start if I want to solve the problem.

Many friends are very anxious, once they can not use it, they will find that there is something wrong with the proxy IP. If they continue to use it, the result will be the same. When you encounter such a problem, don't worry, first find out the root of the problem, and then solve it.

First, whether the API withdrawal link is normal, whether the agent IP can withdraw cash normally, the first step of many software settings are incorrect, IP cannot withdraw cash at all, or the API cash back format does not meet the requirements, and there are many friends whose code deals with the IP partition is incorrect. There have been several friends, every time the use of proxy IP is successful for the first time, and all later uses have failed. After repeated checks, it is found that the partition processing is incorrect.

So, how can you tell if there is a problem with API extracting links? In fact, after copying the API extraction link to the browser bar to open, you can see the results: 1, can not open the web page, API has a problem 2, normal return IP, check whether the format meets the requirements 3, other reasons can not return normally, insufficient parameters or extract too fast, and so on.

Second, whether the agent IP license is correct, now many fee-based IP agents need a license, which is more secure. At present, there are three mainstream licensing methods: 1. Whitelist; 2. User name + password; 3.1 and 2 support, can be switched by yourself. If API fails to extract IP user agents, you need to check the authorization, for example, whether the fixed agent terminal IP is bound in IP whitelist authorization mode, whether the authorization is correct under user name + password authorization, and whether the authorization is confused in the two authorization modes.

So how to judge the authorization error? It's actually very simple: 1. Login agent IP website management background directly check 2. The browser sets the proxy IP test. Terminal IP whitelist authorization mode or user name + password authorization mode is not bound. After the browser sets up the proxy IP, the user name + password dialog box pops up, asking for a user name and password. 3. There are 7 errors in the code.

There are many questions about whether the anti-crawling strategy is correct. Obviously, everything is set up, and the code is correct, but the access fails, or the success rate is low, some of the previous visits are successful, and suddenly one day the access fails or fails. The first reaction of many friends is that the quality of agent IP is poor and has declined. Please change the proxy IP service provider as soon as possible.

The above is all the contents of the article "how to make better use of crawler agents". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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