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  • Productivity Debugging

    Testing HTML5 AppCache with Fiddler

    A few weeks back, Jonathan Sampson noted that testing the HTML5 AppCache feature is a bit of a pain. One reason is that, in IE10, putting the browser into Work Offline mode is ineffective—the browser will detect that a network connection is available and exit the Work Offline mode automatically.
    February 15, 2013
  • Productivity Debugging

    Fiddler and Modern TLS Versions

    Recently, a Fiddler user contacted me to note that they discovered a client/server application which failed when the TLS version 1.1 option is enabled in Internet Explorer’s Advanced settings. They were surprised to find that when they attempted to use Fiddler to debug the communication, the connection was instead successful.
    February 11, 2013
  • Productivity Debugging Release

    Announcing Fiddler 2.4.3 Beta

    Yesterday, an updated Fiddler Beta was released, targeting .NET2 or .NET4. This update contains the usual set of bug fixes as well as a number of small features that I hope you’ll find useful.
    February 08, 2013
  • Productivity Debugging Release

    Announcing Fiddler 2.4.3 Beta

    Yesterday, an updated Fiddler Beta was released, targeting .NET2 or .NET4. This update contains the usual set of bug fixes as well as a number of small features that I hope you’ll find useful. Column Customization Fiddler has always permitted you to customize the set of displayed columns to show information you’re interested in directly inside the Web Sessions list. However, adding new columns isn’t as easy as it could be, and this Beta includes the first steps toward simplifying this process. Simply right-click on the column headers and choose Customize columns… A simple popup will open to allow you ...
    February 08, 2013
  • Productivity Debugging

    QuickTip - Marking and Selecting Traffic in Fiddler

    Fiddler offers numerous ways to tag Web Sessions so you can easily identify them later. For instance, you can use the Comment button on the toolbar (or hit the M key) after selecting items in Web Sessions list to add notes about the traffic...
    January 25, 2013