What is Curl?
Curl is a command-line tool that allows users to transfer data over the network. Curl supports over 25+ protocols, including HTTP, HTTPS, FTP, and SFTP. When it comes to debugging network requests and APIs calls, Curl is one of the best tools out there, and it's free and open-source. Curl works on Linux, Mac, and Windows.
What is a Proxy Server?
A proxyserver is an intermediate server (software or hardware) between the user (browser, mobile app, etc.) and the website and transfers traffic between them. Proxies separate end-user clients from the websites they browse and provide multiple levels of functionality and security. For example, proxy servers can compress and encrypt network traffic, prevent intrusion into a local network from the Internet, and monitor employee Internet use during working hours. The word "proxy" means "to act on behalf of another," and the proxy server acts on behalf of the end-user. When using proxy servers, all requests to the Internet first go to the proxy server, which evaluates the request, applies a set of rules to it, and then, if necessary, forwards the request to the Internet. Likewise, server responses are first returned to the proxy, which evaluates and processes them and is only sent to the end-user. In some cases, a chain of proxy servers is used to provide greater anonymity on the Internet.
Summary
cURL is a very powerful tool for automation and is arguably the best command line interface in terms of proxy support. Lastly, as libcurl works very well with php, many web applications use it for web scraping projects, making it a must-have for any web scraper.
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