My book “Debugging with Fiddler”, is now available

I’m delighted to announce that my new full-length book on Fiddler is now available. Weighing in at 330 pages, it covers every feature in Fiddler, and provides the most comprehensive available documentation of how to develop Fiddler extensions (including Inspectors, Transcoders, and IFiddlerExtensions) and build on the FiddlerCore class library. The book is available in…

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Sneak Peek at Table of Contents for the Upcoming Fiddler Book

Table of Contents Acknowledgements………………………………………………………………………………………………………………………………………… iii Table of Contents……………………………………………………………………………………………………………………………………………. iv Origins……………………………………………………………………………………………………………………………………………………………… 1 About this book…………………………………………………………………………………………………………………………………………… 3 A Quick Primer………………………………………………………………………………………………………………………………………………… 5 Basic Concepts…………………………………………………………………………………………………………………………………………….. 5 Fiddler Scenarios………………………………………………………………………………………………………………………………………… 6 Getting Started with Fiddler…………………………………………………………………………………………………………………………….. 8 System Requirements…………………………………………………………………………………………………………………………………. 8 Installing Fiddler………………………………………………………………………………………………………………………………………….. 8 Updating Fiddler………………………………………………………………………………………………………………………………………….. 9 The Fiddler User-Interface…………………………………………………………………………………………………………………………….. 10 The Web Sessions List……………………………………………………………………………………………………………………………….. 10 Web Sessions Context Menu…………………………………………………………………………………………………………………….. 13 Fiddler’s Main…

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News on Fiddler Surveys and Telemetry

For this morning’s post, I wanted to give everyone a quick picture of some of the data I’ve collected about Fiddler usage, how I plan to respond, and how I will continue to learn more. I’ve recently had the chance to run some surveys and spend some time with developers who are using Fiddler, and…

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New Features in FiddlerCore 2.2.9.9

Version 2.2.9.9 of the FiddlerCore .NET class library has been released. This new version includes a number of new features that make FiddlerCore more useful for a variety of traffic monitoring and capture scenarios. With the exception of the final improvement (Server Read Callback), all of these improvements are also available to extensions running inside…

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Fiddler’s New Import and Export Architecture

All versions of Fiddler support a rich extensibility model that enables developers to enhance Fiddler with new functionality useful for traffic inspection, analysis, and sharing. However, writing extensions that import traffic captured by other tools was difficult, and extensions that offered traffic export often extended the UI in confusing ways or failed to implement basic…

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FiddlerCore and the .NET Client Profile

As the .NET Framework grew in size from version to version, there was an increase in the clamor for a smaller version of the Framework. The idea was that this smaller version would be quicker to download and install, with the tradeoff that it would support only client applications, leaving out the assemblies used by…

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Announcing Fiddler 2.2.9

The Beta version of Fiddler 2.2.9 is now available for download. The update notification’s changelist hits the highlights, but there’s a ton of new goodies in the new version which I’ll be talking about over the next week or so. Beyond a huge crop of architectural and performance improvements, there are tons of bugfixes and…

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