Tell me more about Charles Proxy: what features does it have and which ones have you used the most?

Charles Proxy is a tool for intercepting and analyzing HTTP/HTTPS traffic between the client and server. Main features of Charles Proxy:

• Viewing and analyzing requests and responses, including headers, body, parameters.
• Ability to edit requests on the fly and resend them.
• Session recording for later analysis.
• Simulating slow connections (throttling) for performance testing.
• SSL Proxying — decrypting HTTPS traffic.
• Modifying server responses (e.g., for testing application behavior with different data).

Most often, I used the intercepting and analyzing request functions, as well as editing requests to test various API scenarios. The ability to view the response body and headers was also useful for debugging network and authorization issues.