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Capturing (and changing) a Web Site with Fiddler
Often, the IE team will encounter a problem in a complicated production website, and will need to "reduce the repro" in order to determine the root cause of a given bug. This is made more complicated...
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Swapping out JQuery with Fiddler
This morning, someone asked me to look into a site-compatibility problem on a HTML5 demo site. When loading the site into IE9 and IE10, the F12 Developer Tools’ Script Debugger showed the following...
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Find Proxy Authentication bugs with Fiddler
Over on my other blog, I just posted an article showing how you can use Fiddler to find bugs in applications that don't expect authenticating proxies.
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ThinkPad Scrolling and Fiddler
I’m a long-time ThinkPad fan and owner—the keyboards are sublime, and I love the TrackPoint interface. What I don’t love is the ThinkPad driver software, which doesn’t send the standard WM_MOUSEWHEEL...
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New Tricks in Fiddler 2.3.8.2
The new Fiddler Beta has a few useful tricks. First, you can copy a DataURI to your clipboard (from Fiddler itself, or anywhere else): and use the new Edit > Paste Files as Sessions command: … to...
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Cookie Scanning with Fiddler
With the recent kerfuffle about sites providing misleading P3P statements, I decided to throw together a quick Fiddler add-on that displays privacy information simply in the Fiddler UI. Install the new...
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.NET HTTPS connections timeout on SNI TLS Warning
Recently, a handful of folks have emailed me complaining that some HTTPS sites cannot be reached by their .NET programs or from any program when Fiddler is configured to decrypt traffic. Notably, these...
View ArticleSneak Peek at Table of Contents for the Upcoming Fiddler Book
Table of Contents Acknowledgements............................................................................................................................................................ iii Table...
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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...
View ArticleFind Proxy Authentication bugs with Fiddler
Over on my other blog, I just posted an article showing how you can use Fiddler to find bugs in applications that don't expect authenticating proxies.
View ArticleClik here to view.
Update on Fiddler Telemetry
Back in October of last year, I blogged the results of some surveys and announced that some telemetry features would be added to the Fiddler beta builds. Now that 10 months have passed, I’ll provide an...
View ArticleVisual 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...
View ArticleBlog Closed: Fiddler now a part of the Telerik family
Read more here http://ericlawrence.com/fiddler/letterfromeric.asp. Find the new Fiddler blog here: http://blogs.telerik.com/fiddler/posts
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