I downloaded the "fiddler...dmg" and installed it. When I try to run it, I get this error "“Progress Telerik Fiddler” can’t be opened because Apple cannot check it for malicious software.".

Is this ready for MacOS at this point. I can't disable the verification in a corporate environment.

Now what?

I had trouble using Fiddler for iOS in localhost env.

( PC browser（IE) and Android are OK !)

 

A heavy request posts to server in iOS,

but Fuddler capture request twice.

dose anyone some idea?

 

like this:

-------------------------------------------

# Result  Protocol　Host　URL 

↓              HTTPS　AAA　test/RestAAA

   200       HTTP      Tunnel to AAA:443

  500       HTTPS　AAA　test/RestAAA     ←not expectation

-------------------------------------------

after , first HTTPS request is return 200,and Collect Json Data.

 

:)

I am trying to get Fiddler running on a Mac and I keep getting the error that my connection is not private and I can't navigate to any sites, therefore rending Fiddler useless.  I've searched through the forums, but all of the solutions I've found have been for the Windows version.  I have verified that the "Decrypt HTTPS" box is checked, but if there's more that needs to be done on the Mac version, I have not found it.

I'm trying to parse some data from a socket in C#. The socket uses the Permessage-Deflate extension. While the packet types are all text, some of the packets show illegible characters. 

 

If I select a packet and go to the HexView tab, I can right-click the packet, choose Copy/Copy as Base64, paste it into the TextWizard and then transform it from DeflatedSAML. This parsed the packet perfectly. 

 

What is being done here in terms of encodings etc in C# equivalent code? I can't seem to go from a string received as a packet in C# to getting the same result as those steps in Fiddler, no matter what options in terms of encoding or decompression I cycle through. . . 

Is there a 'flag' byte at the start of a packet that indicates whether a packet contains plain text or compressed data, out of interest?

I'd appreciate any pointers at all on this. 

Hi,

I'm making an api call and trying to modify the status code in the https response but the response is failing without returning a status code and I'm also getting a ERR_TUNNEL_CONNECTION_FAILED.

I can see my https request coming in. Also managed to modify/add headers on the response to test if my code in the ScriptEditor works - works fine.

NOTE: The status code changes also works fine for http request.

 

I am probably missing something simple, here is the code below. For testing I also checked other https calls from different sites and the same is happening.

In OnBeforeResponse I have: oSession.responseCode = 500;

 

Any ideas?

Thanks

Hello guys, i am using fiddlercore4 and selenium, i am setting chromes proxy server to a custom proxy, but it prevents fiddler from working. It is mandatory for me to add proxies into my software, any reason to why this is happening?

 

log are as follows

---------------------------
Awww, Fiddlesticks!
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

无法加载或初始化请求的服务提供程序。

Type: System.Net.Sockets.SocketException
Source: System
   在 System.Net.SafeCloseSocketAndEvent.CreateWSASocketWithEvent(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType, Boolean autoReset, Boolean signaled)

   在 System.Net.NetworkInformation.NetworkChange.AddressChangeListener.StartHelper(NetworkAddressChangedEventHandler caller, Boolean captureContext, StartIPOptions startIPOptions)

   在 System.Net.NetworkInformation.NetworkChange.AvailabilityChangeListener.Start(NetworkAvailabilityChangedEventHandler caller)

   在 Fiddler.Proxy..ctor(Boolean isPrimary, ProxySettings upstreamProxySettings) 位置 C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Common\Core\Proxy.cs:行号 209

   在 Fiddler.frmViewer.‹•(String[] ˆ•) 位置 C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Viewer.cs:行号 2940

   在 Fiddler.frmViewer.‡•(String[] ˆ•) 位置 C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Viewer.cs:行号 2758


Fiddler v5.0.20194.41348 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.18362.0] 
---------------------------
确定   
---------------------------

How to solve this problem？

hi! fiddler not open

 

Hi team, 

I follow this article to collect log on mobile https://www.telerik.com/blogs/how-to-capture-android-traffic-with-fiddler. But after set proxy manually, I'm unable to access internet in my mobile anymore. Please help.

Regards,

Chinh.

Hi,

I have a 3 layer .NET application where i'm not able to capture the traffic between the frontend application server and the backend application server (both  windows server 2019 with IIS 10).

 

I opened fiddler in the frontend server, in order to capture all the requestes to the backend server and in my machine I use the application normally and I cannot see any traffic being captured by fiddler:

 

If I open the application in the frontend server, I'm able to see the html requests from the browser to the frontend server, but what I want is to capture the communication between the 2 servers.

 

I've another server, running windows server 2012 with IIS 8, where I can perfectly capture all traffic from the frontend server to the backend server.

 

Are there any issues with windows server 2019 version? I'm missing some configuration?

 

 

Any help is appeciated.

 

Regards,

LMC