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2 answers
114 views

Hi there

I am trying to resolve an issue why it constantly takes 16 seconds (used to be 11 but then something changed (?)) to launch an intranet website using IE11 with a PAC file. But here is the most perculier thing if I install Fiddler then the website launches instantaneous.

I would like to know why Fiddler has this impact? 

Regards

Paul

Paul
Top achievements
Rank 1
 answered on 09 May 2016
1 answer
463 views
---------------------------
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.

VersionCheckFailed: Server Response Code = 502

Type: System.IO.InvalidDataException
Source: Fiddler
   at Fiddler.Updater.GetLatestVersion(Boolean includeBetaVersions, Boolean isEmergencyCall)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

   at System.Threading.ThreadPoolWorkQueue.Dispatch()


Fiddler v4.6.2.3 (x64 AMD64) [.NET 4.0.30319.18063 on Microsoft Windows NT 6.1.7601 Service Pack 1] 
Tsviatko Yovtchev
Telerik team
 answered on 09 May 2016
1 answer
292 views

Hello,

I have a .NET Application that I need to alter some WCF traffic headers on.  The Microsoft folks told me there is no way to really inject the headers I need in the request and pick them up out of the response with the current framework.  What I would like to do is just add FiddlerCore to the application, and if the header isn't there on the outgoing request from my application, then I would like to add it.  (Real simple).

I can get everything to work, however the events only fire if I register the FiddlerApplication as a system proxy.  I would like this transparent to the user so that it doesn't screw up their proxy settings in the OS. 

Fiddler.FiddlerApplication.Startup(8877, false, false);
Fiddler.FiddlerApplication.OnNotification += delegate(object sender, NotificationEventArgs oNEA) { System.Windows.Forms.MessageBox.Show("Here"); };

 

The event never gets called in this case, however if I change this over to the below it does:

Fiddler.FiddlerApplication.Startup(8877, true, false);
Fiddler.FiddlerApplication.OnNotification += delegate(object sender, NotificationEventArgs oNEA) { System.Windows.Forms.MessageBox.Show("Here"); };

 

Should the event be being fired if I have the RegisterAsASystemProxy turned OFF?

 

Thanks

 

Tsviatko Yovtchev
Telerik team
 answered on 09 May 2016
0 answers
389 views

Hi All

I am just wondering whether i have posted this in the correct place. I am looking for help or a tutorial on how to use FiddlerCore with a SWF file to inject data into a flash Game.

I have been using the normal way or swapping files on loadup but believe there is a specific way of doing this with FIDDLERCORE.

I have heard about people using this method but unfortunately they dont wanna tell or show me.Any guidance will be welcome Thank-You.

 

regards

Morgs

Robert
Top achievements
Rank 1
 asked on 01 May 2016
1 answer
338 views

Hi,  would like to add a context action that when clicked fiddler will launch an external program and send some data from the packet to that application,  still a noob and  know if that is even possible.

 

Thanks a lot

Tsviatko Yovtchev
Telerik team
 answered on 28 Apr 2016
1 answer
134 views

Hello,

Frequently, with a large (360MB FARX) autoresponder set, when Fiddler is forced to shut down unexpectedly, I get the following message (screenshot attached)

Failed to load AutoResponder rules from C:\Path\To\AutoResponder.xml. There is an unclosed literal string.

I have to re-import the rules from an exported FARX file whenever this happens to be sure I have all the rules in place.

I've seen this in other software that uses XML based configuration files

Any chance this could be made more robust? This is a killer when you're trying to run Fiddler on machine startup unattended.

Tsviatko Yovtchev
Telerik team
 answered on 28 Apr 2016
1 answer
278 views

Hi. Can anybody help me with simple extension. I am following fiddler's specification but even simple example wont work for me.

I did next steps:
1) Create new C# Class Library project
2) Put code from example in to the class1.cs
3) Compile Release version with Target framework.Net Framework 4.
4) Copy FiddlerTest.dll in to C:\Program Files (x86)\Fiddler2\Scripts directory and restart Fiddler.

After restart Fiddler Log tab doesn't contains my test messages. Also Extensions tab in the Fiddler option window shows only default extensions.

Fiddler version is v4.4.8.0, OS: Win 8.1 (64-bit).

Code:

01.using System;
02.using System.Windows.Forms;
03.using Fiddler;
04. 
05.[assembly: Fiddler.RequiredVersion("2.3.5.0")]
06. 
07.public class Violin : IAutoTamper
08.{
09.    string sUserAgent = "";
10. 
11.    public Violin()
12.    {
13.        sUserAgent = "Violin";
14. 
15.        FiddlerApplication.Log.LogString("Test message from custom extension");
16.    }
17. 
18.    public void OnLoad() {
19. 
20.        FiddlerApplication.Log.LogString("Test message from custom extension - method OnLoad");
21.    }
22.    public void OnBeforeUnload() {}
23. 
24.    public void AutoTamperRequestBefore(Session oSession)
25.    {
26.        oSession.oRequest["User-Agent"] = sUserAgent;
27.    }
28.    public void AutoTamperRequestAfter(Session oSession) { }
29.    public void AutoTamperResponseBefore(Session oSession) { }
30.    public void AutoTamperResponseAfter(Session oSession) { }
31.    public void OnBeforeReturningError(Session oSession) { }

Any suggestions?

Tsviatko Yovtchev
Telerik team
 answered on 27 Apr 2016
1 answer
293 views

Fiddler keeps on crashing with the following error

 

---------------------------
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.

VersionCheckFailed: Server Response Code = 502

Type: System.IO.InvalidDataException
Source: Fiddler
   at Fiddler.Updater.GetLatestVersion(Boolean includeBetaVersions, Boolean isEmergencyCall)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

   at System.Threading.ThreadPoolWorkQueue.Dispatch()


Fiddler v4.6.2.3 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 6.1.7601 Service Pack 1]
---------------------------
OK   
---------------------------

A.
Tsviatko Yovtchev
Telerik team
 answered on 26 Apr 2016
2 answers
1.4K+ views

hi team, is there any way we can capture IIS w3wp process traffic in fiddler?

or traffic generating from a windows service.

Andrew
Top achievements
Rank 1
 answered on 26 Apr 2016
1 answer
130 views

I have Fiddler v4.6.2.2 on my one of the laptop which has German keyboard. To add a splitter I am using key combination shift + "=" as there is not direct key to enter "=" character. But this does not work. I have another personal laptop with US english keyboard having Fiddler v4.6.2.3 and I am able to add splitter by pressing only "=" key. 

Is there are way to add splitter for with non-english keyboard?

Tsviatko Yovtchev
Telerik team
 answered on 25 Apr 2016
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