Fiddler Web Debugger

Fiddler is a web debugging tool which is owned, developed, and distributed by Eric Lawrence.

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  • Blog Post: Visual Studio 2012, IIS Express, and Fiddler

    From the mail bag... Q: When I use IE10 on Windows 8 to visit an IIS Express instance using the following URL http://ipv4.fiddler:2468/, I get an unexpected error message. HTTP/1.1 400 Bad Request Content-Type: text/html; charset=us-ascii Server: Microsoft-HTTPAPI/2.0 Date: Wed, 22 Aug 2012 19...
  • Blog Post: Revisiting Fiddler and Win8+ Immersive applications

    Back in September, I blogged about the configuration steps required to debug Windows 8 Immersive (“Metro-style”) apps using Fiddler . Since that post was originally written, I’ve made available a new version of Fiddler which runs natively on the .NETv4 Framework, enabling Windows 8...
  • Blog Post: Generating HTML5 AppCache Manifests with Fiddler

    HTML5 introduces the concept of an Application Cache, which allows a web developer to provide a manifest of pages that should be cached to permit offline use. You can see an instance of AppCache over on the IETestDrive site ; if you examine the markup, you can find that the HTML tag contains a manifest...
  • Blog Post: Fiddler and Windows 8 Metro-style applications

    Over on StackOverflow, a new Windows 8 user asked how to get Fiddler working with new Windows 8 Metro-style applications. These applications work somewhat differently than classic desktop applications, and require a bit of special configuration work to get Fiddler to work properly. Fear not, however...
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