Hello guys, when I tried connect to google.com from I got this Certificate Error:

I don't know why because I add Trust Root Certificate, do you have some solve this error?

Thanks to the amazing FiddlerCore and quick replies on this forum.

 

I have developed a simple C# solution that uses FiddlerCore to mock the HTTPS requests of an application(.exe) which invokes an URL and responds with json data. I have made the changes in the BeforeRequest() and BeforeResponse() as below.

* BeforeRequest(oSession)

{

oSession.bBufferResponse = true;

}

* BeforeResponse(oSession){ session.utilSetResponseBody("myjson.json); }

I could see from the log that response has been modified but the response is not being sent back to client [my application is timing out]. 

I have checked with other URL's which are working as expected with Fiddler tool Autoresponder, but not working through my code.

 

Any help is highly appreciated..

 

Thanks,

Malleswari

 

hello, i have question....

i have rule:  http://prntscr.com/mly17z
so.... how i can get Original URL who worked with my rule? 

it is desirable to get something in the form of HTTP REFERRER

In trying to diagnose some request/response oddities from one of our web pages with Fiddler, I discovered that on some requests the Statistics tab would have this note listed:

"NOTE: This request was retried after a Receive operation failed."

Can anybody shed a little light on what this means? Whatever it is, it's not repeatable. Sometimes I get that message, and sometimes I don't. The request is going to an Apache web server that's then proxying the request to a Tomcat server.

The first part of the Statistics tab output looks like this:

>>>>>>>>>>>>>>>>>
Request Count:   1
Bytes Sent:      1,333 (headers:1,333; body:0)
Bytes Received:  10,243 (headers:776; body:9,467)

ACTUAL PERFORMANCE
--------------

NOTE: This request was retried after a Receive operation failed.

ClientConnected: 00:37:16.488
ClientBeginRequest: 00:37:42.189
GotRequestHeaders: 00:37:42.190
ClientDoneRequest: 00:37:42.190
Determine Gateway: 0ms
DNS Lookup: 17ms
TCP/IP Connect: 20ms
HTTPS Handshake: 0ms
ServerConnected: 00:37:42.228
FiddlerBeginRequest: 00:37:42.228
ServerGotRequest: 00:37:42.228
ServerBeginResponse: 00:37:42.190
GotResponseHeaders: 00:37:42.265
ServerDoneResponse: 00:37:42.266
ClientBeginResponse: 00:37:42.266
ClientDoneResponse: 00:37:42.266

Overall Elapsed: 0:00:00.077
>>>>>>>>>>>>>>>>>

Hi,

There is a desktop application with https as communication protocol between client and server. When I am trying to capture desktop application traffic in Fiddler with below option -

Tools -> Options -> Connections -> Fiddler listens on Port -> 443 / 8888, seeing no traffic being capturing in the tool.

Please suggest if I am missing.

 

 

Hello,

I can't download Fiddler from the website (https://telerik-fiddler.s3.amazonaws.com/fiddler/FiddlerSetup.exe).

It said that 

The connection to telerik-fiddler.s3.amazonaws.com was interrupted while the page was loading.

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Please contact the website owners to inform them of this problem.

Can someone please check this?

Thanks.

1、I set some Fiddler filter rules to capture only specific host and urls，and it works well except bellow two microsoft urls：

https://watson.telemetry.microsoft.com/Telemetry.Request

https://v10.vortex-win.data.microsoft.com/collect/v1

2、my filter setting and regular express is shown in the attached image, is my regular express written wrong?

 

Progress Telerik Fiddler Web Debugger
v5.0.20173.50948 for .NET 4.6.1
64-bit AMD64, VM: 305.0mb, WS: 309.0mb
.NET 4.6.2 WinNT 10.0.16299.0

Will there be a way to filter traffic while capturing to avoid "spamming" of the logs?

p.s using Fiddler on Mac.

I have followed the documentation and exported the fiddler cert to my machine, did the trust certificate through windows cert management and then in Settings for Chrome and Firefox I added the cert but still I get security denial when hitting any https site with Decrypt HTTPS traffic checked.

Anyone can help?

Thanks,

Maark

I'm using Fiddler to look at requestsare being made by a WPF/WCF application I'm developing in Visual Studio.

I changed the app.config file so that the WPF project makes requests to http://localhost.fiddler:50000/ instead of the usual http://localhost:50000/, but for each request, Fiddler shows multiple entries.

See the attached screenshot, where you can see three entries for the call I made to CustomerService.svc for a customer list. You can tell this is the list call from the size of the return data.

If I add breakpoints in VS, I can see that there is actually only one call being made, but Fiddler shows three.

Anyone able to explain why. This is making debugging very confusing.

Thanks