Telerik Forums
Fiddler Forum
1 answer
808 views

Hello, I want to implement a functionality with AutoResponder in fiddler classic, where only specific url requests are allowed to pass, and all other requests are blocked.

My solution is adding a rule: specificURL.com, and leave the Action and the "Unmatched requests passthrough" option empty.

But the result is, the specificURL.com request return the "404 Fiddled" status code ( and other requests are blocked as expect).

If I choose any of an Action, such as "200_SimpleHTML.dat" or any local file,  the request won't return 404. But I dont't want to choose any of the Actions. I just want the specificURL.com to be requested normally.

breylin
Top achievements
Rank 1
Iron
 answered on 02 Apr 2023
1 answer
458 views
Is there a way to disable Live Traffic being enabled in Fiddler Everywhere on startup? I went through the settings and I am not seeing any option.
Nick Iliev
Telerik team
 answered on 30 Mar 2023
1 answer
193 views

Looking to understand whether values that fall in the Inspectors -> Webforms tab can be updated without manually “Unlocking for Editing” each session

Nick Iliev
Telerik team
 answered on 28 Mar 2023
1 answer
276 views
I'm trying to use Fiddler to proxy an application that uses both HTTP and web sockets.  The web sockets are actually BLIP.

When the application runs, I see all the http traffic just fine in Fiddler, however I see no indication of the web sockets in Fiddler.  In the application logs I can see the web sockets timing out.  In this particular scenario the application waits for the data on the web sockets and no longer progresses as the data is required.  This only happens when using a fiddler proxy.

Is there something special I need to do in order to get fiddler to proxy the web sockets?  If there's a limitation, say due to not supporting BLIP, is there a way to configure fiddler to not proxy any web sockets but still proxy http?

TIA
Nick Iliev
Telerik team
 answered on 22 Mar 2023
1 answer
93 views
hi guys i have one header called x-mobile and value is MARCA=iPhone but i need change iPhone to random values automatically, it seems that with fiddler I could solve this, would it be possible? what would be the best alternative?
Nick Iliev
Telerik team
 answered on 21 Mar 2023
0 answers
50 views
hi guys i have one header called x-mobile and value is MARCA=iPhone but i need change iPhone to random values automatically, it seems that with fiddler I could solve this, would it be possible? what would be the best alternative?
Renata
Top achievements
Rank 1
 asked on 21 Mar 2023
1 answer
744 views

When I close fiddler, I can access to outlook; while using fiddler, I fail to visit it with the error message below:

UTC Date: isn't important
Client Id: isn't important
Session Id: isn't important
Client Version: 20230310007.15
BootResult: cdnError
Failed resource: https://res-geo.cdn.office.net/owamail/20230310007.15/scripts/../resources/locale/zh-hans/owa.MailBoot.json
Back Filled Errors: Unhandled Rejection: Error: Failed to load localized strings:undefined|Unhandled Rejection: Error: Failed to load localized strings:undefined|undefined:undefined|undefined:undefined
err: Error: Failed to load localized strings
esrc: InitLoc
et: ClientError
estack: c@https://outlook.live.com/mail/0/?bO=2&sessionId=isn't important
a/a<@https://outlook.live.com/mail/0/?bO=2&sessionId=isn't important
My ubuntu version is 18.04.6 and my fiddler version is v4.6.20171.26113.


Nick Iliev
Telerik team
 answered on 20 Mar 2023
1 answer
586 views

I'm trying to use fiddler v4.4.8.4 in my ubuntu 14.04 virtual machine to capture https connections, and I get "secure connection failed". Of course, when I close fiddler or don't check cature https connects, firefox works well.

I've done operations below:

1. Export root certificate to desktop, update proxy settings in firefox, import and trust fiddler certificate in firefox.

2. In firefox about:config, set:

  • security.tls.version.max=3
  • security.ssl.enable_ocsp_stapling=false

3. I've used openssl to recreate a crt ver. certificate, added it into /usr/share/ca-certificates/mozilla, and reconfigured it.

Does anybody know how to solve this problem?

Nick Iliev
Telerik team
 answered on 16 Mar 2023
1 answer
114 views

If I plug my laptop into my iMac to use the screen, the network adapter switches to  'Thunderbolt Bridge' and I stop capturing HTTP traffic.

Is it possible to configure Fiddler to always use 'Wi Fi' (which does capture HTTP traffic), so when I plug my laptop in, Fiddler continues to see traffic on the laptops internet connection?

 

(I created the shell file you suggested in your article 'Troubleshooting macOS Proxy Settings and Network Access' to determine the network adapter)

 

 

Nick Iliev
Telerik team
 updated answer on 08 Mar 2023
1 answer
471 views

HTTP/1.1 502 Fiddler - Connection Failed

 

http://static.cdninstagram.com:443

 

showing http? and port 443 this is normal?

it works but some subqueries don't work


Nick Iliev
Telerik team
 answered on 06 Mar 2023
Narrow your results
Selected tags
Tags
+? more
Top users last month
Rob
Top achievements
Rank 3
Iron
Iron
Iron
Atul
Top achievements
Rank 1
Iron
Iron
Iron
Alexander
Top achievements
Rank 1
Veteran
Iron
Serkan
Top achievements
Rank 1
Iron
Shawn
Top achievements
Rank 1
Iron
Iron
Want to show your ninja superpower to fellow developers?
Top users last month
Rob
Top achievements
Rank 3
Iron
Iron
Iron
Atul
Top achievements
Rank 1
Iron
Iron
Iron
Alexander
Top achievements
Rank 1
Veteran
Iron
Serkan
Top achievements
Rank 1
Iron
Shawn
Top achievements
Rank 1
Iron
Iron
Want to show your ninja superpower to fellow developers?
Want to show your ninja superpower to fellow developers?