Network Traffic Analysis and Debugging with Charles Proxy

To build and test modern applications, you must understand exactly what is happening between the client and the server. This text-based course introduces you to Charles Proxy, the industry-standard tool for intercepting and analyzing network traffic. By learning how to monitor data flow, you can quickly diagnose issues and ensure your apps perform flawlessly under any network condition. You will transition from having zero knowledge of network debugging to confidently capturing, inspecting, and manipulating live application traffic. You will learn to isolate bugs, simulate slow network conditions, and mock API responses to verify how your application behaves under various real-world scenarios. What you'll learn: - Understand foundational HTTP/HTTPS protocols and how proxy servers intercept network data - Configure Charles Proxy to decrypt secure SSL/TLS traffic across different platforms - Analyze network requests and responses to identify performance bottlenecks and API errors - Modify live traffic using breakpoints and rewrite rules to test edge cases without changing backend code - Simulate slow network speeds and connection dropouts using throttling tools - Practice debugging scenarios through structured written exercises and step-by-step walkthroughs The course begins with core networking concepts and installation steps before moving into hands-on traffic capture techniques. You will then progress to advanced traffic modification tools, testing security configurations, and troubleshooting common mobile app integration issues. This course is designed entirely for beginners, QA engineers, and developers looking to expand their technical testing toolkit with no prior proxy experience required. Start reading today to master the art of network debugging and take control of your application testing.