Trying to get fiddler to work in visual studio 2010 using chrome when run from the IDE

On the development machine the url looks like http://localhost:someport/somefile.aspx

I set a static port in the VS project properties and told fiddler to monitor that port - nothing.

I modified the .net framework machine.config to run on a proxy per internet suggestions - nothing

<system.net> <defaultProxy useDefaultCredentials="true" enabled="true"> <proxy autoDetect="false" bypassonlocal="false" proxyaddress="http://127.0.0.1:8888" usesystemdefault="false" /> </defaultProxy> </system.net>

Some internet suggestions were to change the proxy server in code, but gave only a snippet, not sure where such code should go.

I added proxy configurations to the web.config file per some suggestions - no help.

This should not be this difficult...please help!

Hi,

 

I just downloaded the latest version of Fiddler 4.6.20171.9220 and the FiddlerScript Editor, however it seems like the FiddlerScript Editor plugin is no longer compatible with the latest version of Fiddler. Whenever I open the FiddlerScript editor page I get an exception...

Is there a chance that the plugin will be updated?

Fiddler v4.6.20171.9220

Failed to import a pcap file thru (File->Import Sessions->Packet Capture), 'Host' field shows as 'PCAPImport' and 'URL' field shows "/MissingRequest" (as shown on the attached screenshot). Wireshark seems has no issue opening this pcap file.

Please help, thanks!

 Hello!

I was hoping someone here would have a solution for a little bloop I keep encountering; When I’m connected to the proxy I cannot download or send any MMS texting. I discovered when I put “mms.vtext.com” into the Bypass Proxy For list I am then able to send mms. However, in order to receive them I have to manually put in every IP address that got declined through fiddler into that same list. Doing this is really inconvenient especially if you have a lot of contacts! Is there another way to get MMS to work when connected to the fiddler proxy?

Any advice would be greatly appreciated, thank you!

Hi, 

I use fiddlercore C# dll frequently,

Is it possible to get FiddlerCore to listen to a unique localhost address? I know it normally listens to 127.0.0.1, but I want it to listen specifically to address 127.0.0.2 or 127.0.0.3 and NOT 127.0.0.1

How can I enter this information into the C# program code? 

Thanks

I installed Fiddler last Dec. and runs well in couple of days.But few days ago,Fiddler stop capturing any kind of request and block all the request.Recently,I installed a  printer driver of HP which I think might be the reason.Although I uninstall the driver and every software came with it,Fiddler still not working.BTW,Fiddler works well in save-mode with or without the printer dirver installed.Hope u can solve this for me.Thx.

The HP printer Driver package name:HP_Color_LaserJet_Pro_MFP_M176,was downloaded from the HP website.

Welcome to the Fiddler Insiders Forum!

This is a meeting place for the most frequent and active Fiddler users and the developers team behind Fiddler. 

New mainstream functionality as well as prototypes of exotic features that may never make it to production are shared and discussed here in an effort to shape the future of Fiddler. Feel free to bring up any topic of interest. Your insight is most welcome.

Membership here is invitation based. If you would like to add another Fiddler user, please, contact the admins.

 

 

 

Being the very noobie I am with https, how is it that Fiddler can decrypt what is in the headers?  Does that imply that any "man in the middle" could decrypt those?  Is it REQUIRED that I encrypt what is in the Header content?  Or, if it is https, everything is encrypted including the headers?

We have been experimenting with strictly per user installation of Fiddler for some time. Here you will find a stable beta of that flavor. All extensions are also attached since the original ones won't work in this setup.

 

The per user installation cannot coexist with the all users one. So if it finds Fiddler for all users installed it will remove it prior to installing. It leaves no traces on the system after uninstall so switching between per user and all users Fiddler is a matter of simple uninstall/reinstall.

 

---------------------------
Uncaught Exception in Session #20
---------------------------
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.

Object reference not set to an instance of an object.

Type: System.NullReferenceException
Source: Fiddler
   at Fiddler.ServerChatter.Ÿ.Ÿ(Object ƒ, EventArgs ‚Ÿ) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\ServerChatter.cs:line 1341

   at Fiddler.Session.set_state(SessionStates value) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 745

   at Fiddler.Session.€(Boolean ) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 6040

   at Fiddler.Session.‘() in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 3912

   at Fiddler.ServerChatter.Œ() in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\ServerChatter.cs:line 1454

   at Fiddler.Session.‘() in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 3554

   at Fiddler.Session.(Object ) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 3347


Fiddler v4.6.2.32002 (x64 AMD64) [.NET 4.0.30319.34209 on Microsoft Windows NT 6.1.7601 Service Pack 1] 
---------------------------
OK   
---------------------------