Questions tagged [fiddlercore]

FiddlerCore allows you to integrate HTTP/HTTPS traffic viewing and modification capabilities into your .NET application, without any of the Fiddler UI

152 questions
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Please suggest an Alternative of Fiddler Core 3rd party library

I am developing an application in which I am monitoring the Internet traffic (using Fiddler Core) and if the the application finds the the URL not trust worthy then it do not let the user visit it. Now as per Fiddler License and agreement I will not…
Vikas Bansal
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How to manually set upstream proxy for fiddler core?

I'd like to be able to redirect http requests from fiddler code through upstream proxys, which I want to be able to specify at runtime. I've looked through FiddlerApplication functions, and I don't see anything that might fit, as well as I haven't…
Arsen Zahray
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Trust certs and capture traffic using Fiddler on Safari, IE and iOS devices

I have set-up my Fiddler Proxy like in the gist here. Code: public class ProxyConfig { private readonly string _secureEndpointHostname = IPAddress.Any.ToString(); private readonly int _secureEndpointPort = 4555; private…
Cosmin
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How do I get FiddlerCore programmatic Certificate Installation to 'stick'?

I'm using FiddlerCore to capture HTTP requests. Everything is working including SSL Captures as long as the Fiddler certificate is manually installed. I've been using manual installation through Fiddler's Options menu and that works fine. However,…
Rick Strahl
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SSL received a record that exceeded the maximum permissible length when modifying request with fiddler

I'm trying to implement a in-system SSL server using FiddlerCore: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace fiddlerCoreTest { using System.IO; using…
Arsen Zahray
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How to write a pass through tcp proxy in c++

I'm trying to write a proxy server that just pass what I read from remote to client. It should be something like FiddlerCore. I follow this study but confused with the server ip and server…
user3819226
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FiddlerCore decoding an sdch response

I'm getting an odd response from a site that I was looking to parse with FiddlerCore. In chrome developer tools if I inspect the response it looks completely normal, in fiddler it doesn't. Code snippet as follows(which used to work fine) String html…
Mrk Fldig
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How To Capture Data with FiddlerCore?

I'm developing a program in c# that will allow me to capture the requests made by the WebBrowser1. My problem is that the "request data" is always empty. I don't understand where I have to put the "webBrowser1.Navigate" command. For now my code is…
Ldg
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Sending HTTP to local FiddlerCore

I'm tring to build a proxy server to handle local request. For example - capture web browser printing request and sending them to the appropriate LAN printer. My idea so far is to host the FiddlerCore engine in a Windows Service. This is my code: …
toy4fun
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How does FiddlerCore decrypt HTTPS traffic

I wrote a little program for capture https traffic. I want to capture DECODED get and post data using that software. As you know, the Fiddler application can do that like a charm and now i am looking for a way to do that in my program. For instance,…
SilverLight
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FiddlerCore: HTTP Tunnel Issue

I have an application, and I am trying to intercept its requests with FiddlerCore. Using Fiddler, I see the requests as follows: https://i.stack.imgur.com/bhUqK.png (HTTP CONNECT tunnel into HTTPS request) When using FiddlerCore, I am only seeing…
Tr33s
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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…
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Fiddler doesn't capture traffic from my C# app

I've tried using Fiddler on Windows 10 x64 and on Windows 7 Ultimate x86 in Oracle VM as a guest, and on the Win 10 as well, with Fiddler2 and Fiddler4, FiddlerCore and Charles proxy. Those (Fiddler2, 4, Core, and Charles proxy) capture all the…
codingcoder
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fiddler core automatic streaming can't be disable?

disabling automatic video/audio streaming from fiddler core proxy without using ResponseHeadersAvailable not working . in my scenario I want to capture all video/audio requests and responses and this what I wrote so fat…
3
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Capture HTTPS request to nonexistent server with FiddlerCore

I am trying to send a response to an HTTPS request, using FiddlerCore. I need things to work like this: I put some fake URL in browser, like https://my_url_that_doesnt_exist.com/, then I intercept this request with FiddlerCore and respond to it with…
Yaroslav Yakovlev
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