What is Fiddler (Progress)?
Fiddler is a web debugging proxy tool for Windows, macOS, and Linux that helps identify and resolve issues in web applications. It inspects and modifies HTTP/S traffic, allowing developers and QA professionals to troubleshoot problems, optimize performance, and ensure security and functionality. The tool offers a suite of debugging solutions including Fiddler Everywhere, Fiddler Classic, Fiddler Everywhere Reporter, and FiddlerCore.
Why use it in the API Lifecycle?
- Traffic Capture: Provides multiple options for capturing web and network traffic, including from remote devices.
- Protocol Support: Supports the debugging of multiple network protocols.
- Traffic Modification Rules: Offers extensive rules for modifying intercepted web traffic.
- Advanced Filtering: Includes advanced filters for narrowing down and focusing on specific network traffic.
- Offline Mode Operation: Functions in an offline mode for analysis without an active internet connection.
Best Practices
- Use Fiddler Everywhere for cross-platform debugging across macOS, Windows, and Linux environments.
