Fiddler Ideas

Currently, Microsoft Edge generates HAR files with a malformed HTTP version string, e.g. "httpVersion": "HTTPS" When Fiddler's HAR Import feature attempts to parse this data, it fails and this results in omitting *all* of ...

Sometimes Fiddler crushes when set a comment with Japanese IME. It doesn't occur when input with English IME. Perhaps it's related to session what is multi-part post in Inspectors.

Your software correctly throws up a big yellow warning message about when the system proxy has changed. But after that it seems not to realize when it's changed ....yet again ... back to being "checked" under the Windows "Lan Settings" dialog boxe...

You should delete the routes from IE connection settings and any mods your application makes to the registry when the user clicks on the X in Fiddler. It seems like when you exit using File > Exit it does a "clean" exit. Please make this consis...

When checking for updates I noticed that when I have 'offer upgrade to Beta versions' enabled, the response shows the latest version as 4.6.20171.14978 [03/22/2017]. I disabled checking for beta versions and it returned the latest released versio...

The Fiddler 4 installer thinks there's something still installed in c:\Program Files (x86)\Fiddler2, but that folder no longer exists and the old version of Fiddler is no longer listed in "Programs and Features". Error message when I run the new ...

code #!/usr/bin/env python3from urllib.request import urlopen# with fiddler open# no problem, see the slashresp = urlopen("http://www.baidu.com/")# with fiddler open# raises 400 Bad Requestresp = urlopen("http://www.baidu.com") # with fiddler cl...

Related to forum thread: https://www.telerik.com/forums/fiddler-no-longer-capturing-web-service-requests-in-netWe found that .NET Core projects use WinHTTP instead of WinINET. As Fiddler registers itself only as a proxy for WinINET, traffic from t...

I need help with inserting cookies through FiddlerScript. I have cookies like below which contains " inside cookie value, when I remove " from cookie value I stopped getting response from server. Now the real problem is FiddlerScript doesn't consi...