In the process of network data collection and access, CURL is a powerful tool. Combining CURL with agents can not only enhance the efficiency and accuracy of data collection and access, but also better protect privacy and detect the correctness of agents. .

This article explains what CURL is and the benefits of using CURL with proxies:

1: What is CURL:

CURL is a file transfer tool that uses URL syntax to work under the command line. It supports file upload and download, so it is a comprehensive transfer tool. However, according to tradition, it is customary to call cURL a download tool. CURL also includes libcurl for program development.

CURL is a powerful command line tool that can download or upload files through multiple protocols (such as http, ftp, etc.), and supports many other functions, such as POST requests, cookies, authentication, speed limit, file size, progress bar, etc. . In addition, CURL also supports downloading partial files, user agent strings, etc. from specified offsets. In addition to being used in the terminal, CURL can also be used by programming languages for network requests.

2: Benefits of using CURL in conjunction with proxies:

• Break through geographical restrictions: Some websites will restrict user access based on IP addresses. Using a proxy can hide the real IP address, thereby improving the access speed and stability of the crawler, and helping to break through some geographical restrictions.

• Improve access speed and stability: The proxy server can improve the access speed and stability of the crawler, and can also help hide the real IP address of the crawler and improve the availability and stability of the crawler.

• Protect privacy: Using a proxy can hide the user's real IP address and protect the user's privacy and security.

• Enhance network security: Accessing through a proxy can reduce the exposure of local IP addresses and sensitive information, thereby enhancing network security.

• Convenient for network debugging and testing: Using a proxy can facilitate network debugging and testing, such as simulating different network environments, testing the response speed of the website, etc.