When we use proxy IP, we will always encounter various problems, often do not know how to start, at a loss. The editor lists some problems that may occur in the process of using proxy IP, let's understand together:
How to judge whether there is a problem with the proxy IP?
One, authorization problem. Some high-quality proxy IPs need to be authorized. If they are not authorized, they will become thousands of riders. There are two commonly used authorization methods, one is the binding machine IP mode, commonly known as adding a whitelist. (Note: here is the bound machine IP that uses the proxy, not the machine IP that uses the proxy); one is the user name + password mode, which requires user name and password authorization when using the proxy. A frequently encountered situation is that the machine IP is bound, but the authorization mode selects "user name + password", which causes problems.
2. Concurrency issues. The greater the development of a proxy IP, the more frequent the use of the IP, and the greater the possibility of blocking the IP for the target website. We know that the target website has an anti-crawl mechanism, mainly to relieve the pressure on the server. If too many requests are sent in a short period of time and the set threshold is reached, IP access will be restricted.
When using the browser to set the proxy IP to visit the target website successfully, but using the proxy IP in the software or program to request the target website but fails, it is very likely that the IP has been blocked due to excessive development.
There will be many problems in the process of using proxy IP. Only two are listed above, which are also relatively common problems.