Chapter 7. Debugging and Inspecting Pages with Fiddler

Developers looking to make solid, performant applications must design, develop, and test not only applications but the interactions between applications, the messages sent between a server and clients, and how each uses that information. Enter Fiddler.

Fiddler is a web-debugging proxy, an application that lets you monitor and tamper with HTTP and HTTPS traffic being sent between a client computer and a server.

I begin this chapter by describing how to install Fiddler, run it for the first time, and perform basic session inspection. Following that, we'll walk through the process of setting filters and tampering with request/response sequences. Methods for using Fiddler in performance tuning follow, ...

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