Have you used Wireshark for network traffic analysis?

Wireshark is a powerful network traffic analysis tool that allows capturing and detailed examination of data packets passing through a network interface.

Typical usage of Wireshark includes:

• Capturing traffic to diagnose network or application issues.
• Analyzing protocols (HTTP, TCP, UDP, DNS, etc.) to understand network interactions.
• Searching for errors, delays, packet losses.
• Security checks and detecting suspicious activity.

For example, a QA engineer might use Wireshark to verify that a mobile application correctly sends requests to the server and receives expected responses, as well as to identify network problems affecting the application's performance.