Questions on Fiddler Forum

0 answers

152 views

Is there a x-breakresponse in FiddlerCore?

static function OnBeforeRequest(oSession: Session) {      
        if (oSession.uriContains("/teste.json")) {     
            oSession["x-breakresponse"]="uri";                         
        }

I need to make a change to the text of a file that is large and if I do it the normal way this change doesn't happen, I think I don't have time to edit the response and that's why it loads without changing. Because in small files it replaces the normal load on the page with the modified response. Is there any way to get around this? Thanks.

FiddlerCore

asked on 01 Jan 2024

1 answer

314 views

[Solved] Custom rules loaded from a external program.

I will try to be very precise in the question. I have a C# program that uses fiddler, but I want to be able to modify the fiddler script using the program for example. When opening the program it would load the script I need into fiddler or edit it within fiddler automatically. I would like to know if there is a way to do this? Automatically load or edit the rules script in real time using an external program. I prefer to edit because unpacking the custom rules in the folder generally has difficulties as Windows blocks file modifications, etc. Thanks.

Fiddler Classic

answered on 01 Jan 2024

1 answer

168 views

How can I ignore the first request for the same URL

How can I ignore the first request for the same URL with fiddler auto responder

I want auto responder to work with the 2nd request from the same url

Fiddler Classic

answered on 28 Dec 2023

1 answer

243 views

Please Delete My Account

Please Delete My Account I Dont Know How To.

Fiddler Everywhere

Windows

answered on 26 Dec 2023

1 answer

396 views

Why origin and/or referer values are null?

Hi Fiddler Team,

I'm conducting an analysis on origin referer and have 4 scenarios:

No Origin, No Referer

No Origin, Referer Present

Origin Present, Referer Missing

Origin Present, Referer Present

Can you please help me to understand why origin and / or referer are missing (scenarios 1-3)?

Thanks!

Fiddler Classic

answered on 23 Dec 2023

2 answers

261 views

How to redirect unpkg.com to unpkg.zhimg.com?

In my network environment, I cannot access unpkg.com, which causes some of my web pages to load improperly. I can access unpkg.zhimg.com, which can replace unpkg.com. Therefore, I'm wondering if I can use Fiddler to replace all accesses to unpkg.com with accesses to unpkg.zhimg.com. To do this, I used the following code in FiddlerScript:

if (oSession.HTTPMethodIs("CONNECT") && (oSession.PathAndQuery == "unpkg.com:443")) { 
          oSession.PathAndQuery = "unpkg.zhimg.com:443"; 
}

if (oSession.HostnameIs("unpkg.com")) oSession.hostname = "unpkg.zhimg.com";

When I try to access unpkg.com, I encounter the following error:

"fiddler.network.https> HTTPS handshake to unpkg.com (for #2) failed. System.Security.Authentication.AuthenticationException."

From the error message, it seems like Fiddler is still attempting to establish a connection with unpkg.com before accessing unpkg.zhimg.com. Is it possible to configure Fiddler to directly access unpkg.zhimg.com without attempting to connect to unpkg.com first?

Fiddler Classic

answered on 19 Dec 2023

1 answer

548 views

Outlook 356 App and Fiddler Classic

My client said that they are having issues with Outlook 365 via the local Outlook app when Fiddler is also open/running.

The client goes to open outlook and it just sits and spins and never opens. But as soon as she closed out of Fiddler, she was able to open email no problem. They have even had to reboot their computer in order to open Outlook.

See attached for how I have their settings set up.

Fiddler Classic

answered on 14 Dec 2023

1 answer

402 views

Support for client certificates

I need to use client certificate for some requests. In old Fiddler I did this using FiddlerScript using

    static function OnBeforeRequest(oSession: Session) {

	if (oSession.host.toLowerCase() == "aaa.bbb.com")
	{
		oSession["https-Client-Certificate"] = "C:\certs\aaa.bbb.cer";
	}
    }

Is there any way how to do it in Fiddler Everywhere?

Fiddler Everywhere

answered on 11 Dec 2023

2 answers

212 views

Fiddler cannot intercept a request from spotify

Hi

Fiddler cannot intercept a request from spotify.com

TLS handshake failed

Fiddler Classic

answered on 08 Dec 2023

1 answer

543 views

Fiddler cannot find revocation server

I am getting the a popup message every 20 times a minute saying:

**it was not possible to connect to the revocation server or a definitive response could not be obtained**

I am using fiddler classic version:

v5.0.20204.45441 for .NET 4.6.1

We are on a very locked down network, so I am looking for work arounds, not blaming Teleric or Fiddler.

Fiddler Classic

answered on 06 Dec 2023