FiddlerCore allows you to integrate HTTP/HTTPS traffic viewing and modification capabilities into your .NET application, without any of the Fiddler UI
Questions tagged [fiddlercore]
152 questions
1
vote
0 answers
Error - Failed to register Fiddler as the system proxy
When I try to run FiddleApplication.Startup(startupConfig)
FiddlerCoreStartupSettings startupSettings = newFiddlerCoreStartupSettingsBuilder()
.ListenOnPort(0)
.RegisterAsSystemProxy()
…
![](../../users/profiles/3206884.webp)
GiriB
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1
vote
1 answer
How to set FiddlerCore up to monitor all system traffic?
We are evaluating FiddlerCore for a use-case. Basically, for now we just want to catch all of the endpoints/urls being requested on a system. This works fine in Fiddler, no issues. But we only want to catch them while a certain vendor software is…
![](../../users/profiles/80209.webp)
eidylon
- 6,621
- 18
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1
vote
0 answers
Response body is empty for some sites FiddlerCore
I'm doing some test with Fiddler core and I'm able to intercept the traffic for almost all sites, but for some HTTPS sites I get empty response body.
I have found 2 sites by now:
Facebook.com
Google.com
I have tested other HTTPS sites (including…
![](../../users/profiles/3306955.webp)
Bloodday
- 171
- 13
1
vote
1 answer
AfterSessionComplete event not firing in Window Service(Debugging in Console). Fiddercore
My application is not firing the event AfterSessionComplete. Code Below
fiddler.cs
namespace proj
{
public static class Fiddler
{
public static void start()
{
startProxy();
}
public…
![](../../users/profiles/9269508.webp)
Talha Shafique
- 73
- 14
1
vote
1 answer
How to get type of HTTP POST data?
In the picture above, I have Request Body of a POST request with FiddlerCore dll.
Here is how I capture it:
private void FiddlerApplication_AfterSessionComplete(Session sess)
{
string requestBody = "";
if (sess.oRequest != null)
…
![](../../users/profiles/4892263.webp)
Cher
- 2,449
- 7
- 28
- 56
1
vote
1 answer
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…
![](../../users/profiles/2742511.webp)
Ravi Kanth
- 1,074
- 11
- 32
1
vote
1 answer
Fiddlers Jscript JSON.JsonDecode
This is what I have:
public static var users=Fiddler.WebFormats.JSON.JsonDecode('[{key:"20048039", value:"Some Name"}, {key:"204130"...);
This is what I want:
users.JSONObject[0].key or users.JSONObject[0].value
This what I use for…
![](../../users/profiles/7596845.webp)
999kkkfi222
- 35
- 4
1
vote
1 answer
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…
![](../../users/profiles/7596845.webp)
999kkkfi222
- 35
- 4
1
vote
0 answers
How to install Fiddler certificates for Firefox?
I use the following code to install the certificates using FiddlerCore.dll
public static bool InstallCertificate()
{
if (!string.IsNullOrEmpty(certmakerBcCert))
{
…
![](../../users/profiles/4892263.webp)
Cher
- 2,449
- 7
- 28
- 56
1
vote
0 answers
FiddlerCore with Python for .NET
I'm trying to make FiddlerCore work with Python for .NET, but I've got a "mscorlib recursive resource lookup bug". Here's code:
import os
import sys
import clr
clr.AddReference("FiddlerCore")
import Fiddler
def printReq(sesion):
…
![](../../users/profiles/643369.webp)
harungo
- 219
- 1
- 11
1
vote
0 answers
How can we avoid the security prompt while installing the Fiddler core certificate
i am using fiddler core to trace all the Request's but my problem is i am doing all this in windows service and i don't want the security prompt to come while installing the fiddler core root certificate how can i disable it and auto install the…
![](../../users/profiles/2742511.webp)
Ravi Kanth
- 1,074
- 11
- 32
1
vote
2 answers
Connect to SOCKS proxy that requires authentication
I'm using Fiddler Core in my project and have had success routing requests through a SOCKS proxy that does not require authentication.
oS["x-OverrideGateway"] = string.Format("socks={0}:{1}", ProxyHost, ProxyPort);
Now I'm trying to connect to a…
![](../../users/profiles/328968.webp)
Peter
- 9,445
- 6
- 55
- 103
1
vote
1 answer
HttpWebRequest timeout (being blocked) c#
I have a c# application that downloads multiple tiny files from websites (torrents). Some sites restrict the number of downloads per IP per day.
I do a HttpWebRequest and if the stream is a valid torrent, I save it to disk.
Is there a way for my c#…
![](../../users/profiles/3784340.webp)
user3784340
- 74
- 5
1
vote
2 answers
Fiddlercore - Requested resource URL's are generic (OSCP-related) instead of actual resource
I'm following this blogpost to try and see what Fiddlercore does.
The resulting console output, as per the blog, should be something like:
Requested resource from URL http://www.mozilla.org/
Requested resource from URL…
![](../../users/profiles/1901899.webp)
FDM
- 578
- 5
- 14
1
vote
0 answers
How can I setup fiddlercore catch http request/response that without AfterSessionComplete?
I want to catch a third-party made application's http/https messages with fiddlercore in C#.
I'm not sure what kind of the connection type is but what I did is
FiddlerApplication.OnReadRequestBuffer +=…
![](../../users/profiles/1377103.webp)
K--
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