I'm trying to output information to the log, I do " Console.Write("22s");" . After looking at the Log, I do not find this text there. How to correctly output it to Log?

 

     if (oSession.url.Contains("google.com")) {
            Console.Out.Write("22s");
        }

I have two adapters work togather in same time and I use one for common stuff on my host and one for Android Emulator only, and the question is: Can I somehow define which network adapter Fiddler has to use for traffic capture? Is there any way to do it?

I am trying to save sessions to a file, there are around 58k of them

I am getting the error saying the number of entries is 65535 or greater.

The error says you can set 'UseZip64WhenSaving' property on the ZipFile instance... can you please do this or expose the option to us?  (Or do it automatically when needed...)

 

I see you said it was fixed in FiddlerCap in 2014, so I'm curious why it's still broken in Fiddler Classic... [see below link]

https://www.telerik.com/forums/fiddlercap-unable-to-write-traffic-to-file

 

Maybe because it already does enable it 'when needed' but it doesn't think it's needed because i only have < 60k sessions, but somehow it's expanded to > 65535 when it tries to save?

My client has installed Fiddler on their computers and have continuously been getting the attached error message. They only have Fiddler running for 4 hours max and they say each time they get this error message, the Fiddler log is showing less than 65,000 entries.

Hi, we are hosting web api controllers using kestrel (.net 7, c#, self hosted (not within IIS))

Within a controller we use a HttpClient to make a simple get request (https), but we are not seeing the request in fiddler everywhere (Http2 is activated in the settings and also the certificate stuff is activated).

The request to the controller (https & http2) is captured by fiddler, but not the httpclient call (the problem occurs on Win Server 2016), we are using the server name to call the controller (not localhost).

However if I create a console app, add the HttpClient call and start the console, fiddler does capture the call as expected.

I also tried netsh winhttp set proxy 127.0.0.1:8866 as admin, but that also doesn't work.

Any ideas?

 

Br

As soon as we start Fiddler Everywhere for profiling we got the following error in our application whenever a gRPC-call is executed:

Connection id "0HMT23GS5CF6U", Request id "0HMT23GS5CF6U:00000001": An unhandled exception was thrown by the application.

Error: Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Error starting gRPC call. HttpRequestException: Unable to get subchannel from HttpRequestMessage. (127.0.0.1:8866) InvalidOperationException: Unable to get subchannel from HttpRequestMessage.", DebugException="System.Net.Http.HttpRequestException: Unable to get subchannel from HttpRequestMessage. (127.0.0.1:8866)") ---> System.Net.Http.HttpRequestException: Unable to get subchannel from HttpRequestMessage. (127.0.0.1:8866) ---> System.InvalidOperationException: Unable to get subchannel from HttpRequestMessage. at Grpc.Net.Client.Balancer.Internal.BalancerHttpHandler.OnConnect(SocketsHttpConnectionContext context, CancellationToken cancellationToken) at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)

Any idea how to fix this?

 

br

Hello,

I have set up an upstream proxy that requires authentication. I'm using the Fiddler preference fiddler.defaultproxy to enter the IP address and port number.

Because this proxy requires authentication I'm also using fiddler.proxy.creds to store the user name and password in Base64 format as explained here: https://jegansblog.wordpress.com/2015/05/07/setup-fiddler-as-proxy-server-with-basic-authentication/

However, when I open a new browser window, I'm am getting the authentication prompt again:

Why is it not using the credentials stored in the fiddler.proxy.creds field? 

Hi, how would I in the BeforeRequest event return a file from the local computer?

This is related to FiddlerCore, and I'm trying to recreate the function of the Fiddler AutoResponder, to match a string and then respond with a file. Would BeforeRequest be the right thing?

I found this somewhere else on the forum: http://fiddler.wikidot.com/fiddlercore-autorespond

Hope someone has a bit more knowledge,

Thanks

I had to format my pc, and now I'm facing the issue where Fiddler is only capturing HTTP traffic, I have the root certificate installed, and capture/decrypt HTTPS traffic settings on too.   

What URL do I need to allow through the corporate firewall for Fiddler2 "Check for Updates"?