Just updated to the latest version of Fiddler () and it ran the first time, but as soon as I installed the root certificate to decrypt HTTPS it won't run anymore. Nothing appears in the UI, but I get 2 event log errors. I'm on the latest Insiders fast build, VS 2017.3 is installed. If you need anything else let me know.

1)

Application: Fiddler.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException
   at Fiddler.FiddlerApplication..cctor()

Exception Info: System.TypeInitializationException
   at Fiddler.FiddlerApplication.ReportException(System.Exception, System.String)
   at Fiddler.CONFIG..cctor()

Exception Info: System.TypeInitializationException
   at Fiddler.frmViewer.•(System.Object, System.UnhandledExceptionEventArgs)

 

2)

Faulting application name: Fiddler.exe, version: 4.6.3.44034, time stamp: 0x580e4d17
Faulting module name: KERNELBASE.dll, version: 10.0.16257.1, time stamp: 0x7fd7fb50
Exception code: 0xe0434352
Fault offset: 0x0000000000051b88
Faulting process ID: 0x2610
Faulting application start time: 0x01d315ed66e8c274
Faulting application path: C:\Program Files (x86)\Fiddler2\Fiddler.exe
Faulting module path: C:\WINDOWS\System32\KERNELBASE.dll
Report ID: 883f6394-5736-4f47-8c39-d761608eb7c1
Faulting package full name: 
Faulting package-relative application ID: 

When I have Fiddler running and decrypting HTTPS traffic, I get an error message using the join.me app.  If I Turn off capture traffic or close Fiddler, then join.me works fine.  Why is the join.me application not working when I have Fiddler running?

Well, the title says it all. It is working correctly, and able to capture traffics and view them. But if the option to "Capture Traffic" is disabled (e.g. via F12 or File menu), Fiddler still captures traffic as usual, as if the option is enabled. The status bar correctly shows the capturing state.

Running Fiddler Beta v4.6.20171.26113 (Built: Monday, June 12, 2017) on Mono 5.2.0.215 64 bit on Ubuntu 16.04 AMD64.

Is it possible to filter requests based on the contents of JSON?

I have multiple JSON requests coming from the same host, URL, etc. and just want to filter out 1 particular type.

Essentially there is scroll tracking that is triggered constantly while trying to conduct QA for page load and click tracking, and it is just annoying :)

Is this possible through FiddlerScript?

The information I want to filter out:

JSON > data > baseData > actionType=S

If you leave Fiddler running for some time, it sooner or later run out of memory. Look at the attached picture. Fiddler uses more than 4 GB RAM!

Is there any fix for this issue available?

Hi,

Example, I have file (original) who it loads on a page: www.mysite.com/blabla.swf

Some people use software this great software to load a modified local to cheat.
I would like to prevent people from using a modified local .
Do you think that this code will solve the problem?
1) create a condition in the : /blabla.swf shows the content of blabla.php
blabla.php :

is this possible somehow?

 

cheers

Hello

I been trying to modify response.

my app send Accept-Encoding: gzip. i am trying to verify if modification break it or not.

response is ssl base and i am sending request 0x20 byte with POST but i can't break or find option to change buffer at OnBeforeResponse 

so far i am trying

var oBody =oSession.responseBodyBytes;

but i can't find docs or information how to modify body response if its raw data.. there bit lot documents for html and xml modification.

i want to change response body first or last byte. to see if my application detect change or not.

Thx in advance.

I use fiddlercore in my wpf application,which capture http/https info.

i use :

    FiddlerCoreStartupFlags oFCSF = FiddlerCoreStartupFlags.Default;
            int iPort = 8877;
            //Fiddler.FiddlerApplication.Startup(iPort, oFCSF);//启动
            //允许descript https请求
            //Fiddler.FiddlerApplication.Startup(iPort, true, false, true);//启动
            Fiddler.FiddlerApplication.Startup(iPort, oFCSF);

I noticed this issue today, and I wanted to point it out for anyone who might have seen a similar issue. When Fiddler starts up, it sets your LAN settings check box to use a proxy server for your LAN, and when it closes normally it unchecks the box. However, yesterday my computer shut down without closing all applications manually, so Fiddler was forced closed, and when this occurs the check box is not unchecked, and you are unable to use the internet because your browsers are attempting to connect to a proxy server that doesn't exist. It's a quick fix once you realize what's going on, you can either start Fiddler back up, or go into your internet properties -> Connections -> LAN Settings and uncheck the box manually.