Hi! I've made a program on C# and it's work perfectly but stops on POST method to the page. When I use Fiddler as a proxy there is no errors. So I would like to know, what does fiddler to with my POST query so it works? What does Fiddler do with it.

Hi,
I'm pretty new to fiddler so I beg your pardon if I'm posting a silly (or well-known) question... but I searched cygWing and wget keywords without success

I tried to use Fiddler in a test environment, in order to capture Http traffic from a REST web-service application.
Test stimulus comes from a cygWin shell running a wget GET & POST requests, on a Win7 PC. The response is a plain json text.

Fiddler traces http traffic when I issue GET requests from Firefox and from Fiddler itself, but nothing gets tracked when I use Fiddler
with my test suites based on cygWin + wget.

In first place I'd like to know if I'm trying something out of the scope of Fiddler (e.g: because of cygWing+wget implementation, or some other reason).
If you tell me it should work, I'll invest in studying in more depth the topic and I'll find how to do....
....although any quick additional suggestion will  be welcome !

thanks in advance

So I have recently been struggling to get my .NET client working with mutual authentication. In the process of debugging with Fiddler, I noticed that if I make my public cert available to Fiddler, it adds it to the response I get from the server, and I am able to successfully complete my next request(instead of HTTP 401).

So my question is, what is the purpose of this functionality? Has someone experienced something similar?

The latest (and previous versions) of Fidler2setup.exe /S (for Silent) fail to install with Return Code 4444.

If there is a log I don't know where to find it and as NSIS is used there is no logging command line switch (a good enough reason to switch I'd have thought). A windows installer version would be much better (you could look at my free MAKEMSI tool, for easy command line msi building).

The required dot net version is installed:

ASoft .NET Version Detector Report
Download latest version at http://www.asoft.be

==== INFO ====
Created :2014/07/02 - 08:08:57
Computer:XD77038345AA0C

==== FOLDERS ====
<32Bit>
2.0.50727.42
  ->C:\WINNT\Microsoft.NET\Framework\v2.0.50727

==== Installed .NET Frameworks ====
.NET FW 2.0
==== END REPORT ====

Any ideas? Any other ways of installing it? I don't want to manually do it, has to be automated.

Hello,

I too am having issues with Fiddler, I've been using it for years as well and have downloaded the latest version (although the issue showed up earlier today in the previous version I had installed). I can't say when this started - other than most probably sometime in the last week, I tend to use Fiddler a lot but just noticed it today.

The symptoms are as follows...

If I turn capture on, all HTTP requests fail. If I try in Chrome, I can view more error details and see ERR_CONNECTION_RESET at the bottom of the screen. 

I have "Use Filters" unchecked.
I have clicked "Troubleshoot Filters" but my requests are not showing up in Fiddler.
I have tried both http://localhost:8888 and http://ipv4.fiddler:8888 when Fiddler is capturing and I receive nothing in Fiddler, and an ERR_CONNECTION_RESET message when I drill down into the error shown by Chrome.
I have checked proxy information, it is being set to 127.0.0.1:8888 as expected for both Http and Https when capturing. When not capturing the details in WinInet are blank (no proxy server).
I usually see a raft of logs when I have Fiddler enabled from my Win8 apps, now it's all completely clear - which leads me to believe that it's a system wide issue. I've reset the Win8 config but that made no difference.
I have tried Chrome, IE and FF but all exhibit the same behaviour.
The version I am running is v4.4.8.4, 10th June 2014.
Looking at my Firewall (Windows Firewall only) I see "FiddlerProxy" enabled with both Private and Public checked.
When running a new instance I see the following in the log...

14:24:45:8803 Fiddler Running...
14:24:45:9143 Windows 8+ AppContainer isolation feature detected.

I am on Windows 8.1.

Any suggestions you have will be greatly appreciated!

Cheers,

Morgan

I'd like to see GET arguments of a URL, not in the URL itself but parsed. Does Fiddler show those?

Hi all,

It is possible to automatically filter traffic and then save the matches packets with fiddler?
For example if I have an attachment to a mail I want to save the packet where the file is uploaded and then based on an in-house application open the attached file and search in it for data leakage.

Thanks,
Adrian.

As of the beginning of June, we've started seeing a spike in the certificate-related issues out in the field for our production app.  This spike has caused an 8-fold increase in the number of certificate-related tickets we see - we've been unable to reproduce these issues in house, and examination of our customers' machines has showed that their Personal certificate store appears to be corrupted.  When we installed Fiddler .NET4 on their machines for debugging purposes and attempted to enable HTTPS traffic, we saw the attached "Creation of the interception certificate failed" - Googling this error yielded one possible solution of renaming or deleting the folder under C:\Users\[username]\AppData\Roaming\Microsoft\Crypto\RSA, and another solution of installing the FiddlerCert addon.

At this point, we believe either a recent Windows Update or potentially even new malware is responsible for this spike.  We wanted to see if the folks in the Fiddler community have also experienced a recent spike in this issue, and if so, then are there any other ways to resolve the issue on a machine once it appears?

Hi guys,

I'm using FiddlerCore with VB.Net as I have to manipulate some pages in my company.
The problem is its acting weird with the HTTPS and most of the images in the webpages doesn't load.

Here you have the code I'm using right now:

http://pastebin.com/cFQ7XJA1

Here you have a screenshot of the error:

http://prntscr.com/3um4jv

I don't know why this happens as I have the certificate in the trustable:

http://prntscr.com/3um4tm

What am I doing wrong?
Thanks for the help.

Add timeline(Overall Elapsed) into customize columns ,  I need to sort the timeline .  The purpose is I want to know which URL , which API are very slow.    So I can improve the URL performance.  
        The Overall Elapsed  already in the tab "Statistics" per URL.    Well  I need to add this data into right table to sort.



Thanks