Fiddler Classic has a "Hide CONNECT" feature that I find very useful for eliminating TLS negotiation clutter. In Fiddler Everywhere, I can achieve the similar effect by using a filter. However, this does not work when I also have to use OR conditions to filter out traffic from multiple hosts.

More generally, it seems that mixed-mode filter that supports both AND and OR may be required. In this specific case, the filter conditions needed would be "Method != CONNECT && (Host == localhost || Host == example.com)".

Can I at least hide CONNECTs while also filtering for multiple hosts today? I'm evaluating migration from Fiddler Classic to Fiddler Everywhere or some 3rd-party alternatives, since Fiddler Classic is lacking in support for newer protocols that some of our workloads need. I find Fiddler Everywhere to be generally great, other than a few blockers like this one.

Hello,

 

I am unable to log in to the software.

 

Checked my connectivity using "Connectivity Check (getfiddler.com)" and everything looks fine.

You have access to the required Fiddler Everywhere API endpoints.

 

Logs attached

 

  How to fix pls

 

Hey there!
I just started coding with fiddler core and i am trying to auto respond a single request url with a saved response from fiddler
How should i do it on OnBeforeRequest?

when i use flidder my wifi stops working i alreday enabled capture traffic and trusted certificates
log:
19:40:12:6198 !Fiddler.CertMaker> Tried to create cert for 'www.google.com', but can't find it from thread 19!
19:40:12:6198 !WARNING: Unable to find or create Certificate for www.google.com
19:40:12:6278 /Fiddler.CertMaker> Invoking CertEnroll for Subject: CN=www.google.com, O=DO_NOT_TRUST, OU=Created by http://www.fiddler2.com; Thread's ApartmentState: MTA
19:40:12:6278 /Fiddler.CertMaker> Reusing PrivateKey for 'www.google.com'
19:40:13:1304 !ERROR: Failed to generate Certificate using CertEnroll. System.Reflection.TargetInvocationException Se produjo una excepción en el destino de la invocación. < CertEnroll::CSignerCertificate::Initialize: La clave no existe. 0x8009000d (-2146893811 NTE_NO_KEY)
19:40:13:1304 !Fiddler.CertMaker> Failed to create certificate for 'www.google.com'.
19:40:13:1314 /Fiddler.CertMaker> Failed to identify private key location for Root Certificate. Exception: System.Security.Cryptography.CryptographicException El conjunto de claves no existe

I want to limit it to only capture and modify traffic from apps with a specific name or containing a particular string in the window title. Currently, it interferes with Chrome, preventing things like ChatGPT from functioning properly when it's running

The issue at hand involves correctly inputting the required data into the Speakatoo API, but it is not functioning as expected. Further investigation and troubleshooting are needed to identify and resolve the problem, ensuring the API operates as intended.

Hello,

I'm looking to write a fiddler extension following this article: https://docs.telerik.com/fiddler/extend-fiddler/createextension

In this article it suggests linking to fiddler at a hard coded local path.

Is there any way to link to fiddler from a nuget feed, git sub-module or other way or is it best practice to bundle the Fiddler.exe with your application so it can be built without hard-coded paths to locally installed tools? How is this normally done?

Thanks

I would like to use Fiddler Everywhere for remote support and trouble shooting in real time, Is there anyway for the Server to know that the Client is using Fiddler Everywhere as the proxy server if it doesn't modify any data, headers, or flags?

Thanks!

Hi,

I use OnDone to save responsebodies (mostly json data) that match some URL criteria.
I can set different filenames etc. This works fine.
However, SaveResponseBody overwrites the same file if it exists. 

Basically using something like:

if (oSession.url.Contains("some pattern")) {
var directory: String = "d:\\savedir\\";
var path: String = System.IO.Path.Combine(directory + Guid.NewGuid() + ".json" );
oSession.utilDecodeResponse();
oSession.SaveResponseBody(path);
}

Is there also an append mode available on SaveResponseBody so data is added and not overwritten?