Have you had experience using network traffic analysis tools, such as sniffers?

Yes, I have experience using sniffers for network traffic analysis. These tools allow intercepting and examining data packets transmitted between client and server.

For example, Wireshark can track HTTP requests, verify header correctness, see delays and errors in data transfer. This helps identify network issues, debug APIs, and ensure security.

I also used proxy servers like Charles Proxy or Fiddler, which allow modifying requests and responses to test application behavior under different conditions.