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Questions tagged [fiddler-dev]

24 questions
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In fiddler core's new version (4.6.3.50306) some preferences are missing

In fiddler core's new versions (4.6.3.50306) i can't able to get all the preferences (especially "fiddler.certmaker.bc.cert" & "fiddler.certmaker.bc.key") but in the old version (i.e. 4.5.1) its working…
Amit Chauhan
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Error - Failed to register Fiddler as the system proxy

When I try to run FiddleApplication.Startup(startupConfig) FiddlerCoreStartupSettings startupSettings = newFiddlerCoreStartupSettingsBuilder() .ListenOnPort(0) .RegisterAsSystemProxy() …
GiriB
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Modify the response using fiddler core

I am trying to intercept the response and alter the response html body of the specific url. i am able to update the string in the html content but when i check in browser i am not able to find the changes i made. i am using this for altering the…
Ravi Kanth
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Start and stop Fiddler from command line

I have the following requirement: I need to start Fiddler from the command line. It will start capturing my traffic immediately. After some time, I want to stop capturing the traffic, but not close Fiddler. What is the best way to achieve this ?…
Samir Joglekar
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Fiddlercore: how to block and redirect sites

Fiddler core .net api proxy server captures network traffic. how to redirect any http/https url to another site.? suppose if I browse yahoo.com, then proxy server should redirect to another site such as wikipedia.com. Browser should open wikipedia…
Bhartendu Bharti
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FiddlerScript class reference?

I am looking for a language or class reference for FiddlerScript. The Fiddler ScriptEditor has a class explorer. But this only contains a very limited amount of documentation. For example, what methods are available for the Hashtable or…
Dan Jameson
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Reapeat/replay a session x times with a different request header

is it possible to reapeat/replay a session x times with a different reaquest header. I was thinking of a for loop inside OnBeforeRequest which will iterate over the same request from the session, but with a different parameter for the request header…
999kkkfi222
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Using custom certificate in FiddlerCore

This is the process I followed :-` var certX = Fiddler.CertMaker.oCertProvider.GetCertificateForHost(""); File.WriteAllBytes(@"D:\PFX.pfx", certX.Export(X509ContentType.SerializedCert)); Once done with this. I restarted the Demo…
KillerTheLord
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Fiddler extension and inspectors in same assembly

I'm trying to create a fiddler Inspector2 and IFiddlerExtension in the same assembly. However, I can't get the extension to load if I host the assembly in the /Fiddler2/Inspectors/ folder and the inspector won't load when hosted in the…
Peter Oehlert
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How To Rewrite cookie headers in c# fiddler

I have a friend that built me a Browser extension that worked and rerouted a specific file on the network to his desired file. Here is the code in the Browser extension: if (typeof browser !== 'undefined') { chrome = browser } var cookievalue =…
Ryan Ellis
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dotnet not following system proxy settings

I installed fiddler the other week, and now some HTTPs requests only work when Fiddler is open and running. When Fiddler is not open. I have gone into Windows system proxy settings and confirmed that the proxy server is off. Uninstalling fiddler…
Phalanx
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How to edit body before send request with Fiddler(script)

How to edit body before send request with Fiddler(script) in my case path /login have body username: xxx pass: xxxx how to edit user pass before send send request
Teerapong
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Delay between ServerBeginResponse and GotResponseHeaders

I have been hitting my head against this but couldn't find a suitable article for the same. ClientConnected: 08:18:40.592 ClientBeginRequest: 08:18:40.616 GotRequestHeaders: 08:18:40.617 ClientDoneRequest: 08:18:40.967 Determine…
Subhranil Sengupta
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fiddler tunnelled http requests to port 443

I've got Fiddler to decrypt https traffic. which works just fine. http://fiddler2.com/documentation/Configure-Fiddler/Tasks/DecryptHTTPS But there are some requests that are shown as "Tunnel to" port 443. Also the protocol of these requests are…
Azzedine Cheikh
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Fiddler generated certificate has invalid digital signature

Fiddler: v5.0.20182.28034 for .NET 4.6.1 Cert Generator: Tried both CertEnroll & MakeCert Machine: Windows 10 Browser: Chrome I have tried installing fresh fiddler also but no success. I even installed and reinstalled Fiddler Root Cert.
coder
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