logo just bounces up and down on my dock

Dear Fiddler support,

I'm working with lighttpd 1.4.32 server on Linux, and JavaScript application on ExtJs widget.
There a problem in my application during file  uploading (about 30MB) to the server.
SOMETIMES, in IE, file is failed to be uploaded.
No errors in lighttpd, all parameters for file uploading are defined well. In other browsers, file is uploaded.
While debuging this problem, the following error is observed in console:
SEC7111: HTTPS security is compromised by res://ieframe.dll/dnserrordiagoff.htm
.....
All suggestions by Google didn't lead to proper result (update windows, decrease IE security options etc.)
BUT, when I'm using Fiddler application to catch response code, file is uploaded!!!
Please note, that other HTTP analyzers doesn't make such effect.

I'm inside this bug for several months. Quite frustrating.
I will be very appreciate if you could give me some direction why in Fiddler file is uploaded.
Thank you in advance, Marianna

Followed answer from http://stackoverflow.com/questions/11863037/fiddler-how-to-disable-overwrite-header-host

The Link is for "fiddler: how to disable overwrite Header Host"

Q: When using Fiddler, it pops up an alert dialog.

Fiddler has detected a protocol violation in session #14.

The Request's Host header did not match the URL's host component.

URL Host: proxy.music.pp.com Header Host: 119.147.22.41

And it shows that Fiddler changed HTTP Header's host to "proxy.music.pp.com", is there any way to diable Fiddler changing it?

A:
You can do this with rules.

Go into Customize rules, and find the function: OnBeforeRequest(oSession: Session)

Then add the following as the last line of that function:

if (oSession.HostnameIs("proxy.music.pp.com")) { oSession.host = "119.147.22.41"; }

I had this same issue with auto-updates from Avira Servers (Anti Virus).

As the above suggests I added     
if (oSession.HostnameIs("personal.avira-update.com")) {oSession.host = "184.51.102.18";}

In order to find the appropriate host address(es) use cmd.exe and enter nslookup personal.avira-update.com

Hello, I'm not sure whether this is a bug or something else, when Fiddler is capturing traffic and HTTPS decryption is on I cannot browse https://archive.org/

I get the error message "The connection to the server was reset while the page was loading." in Firefox. Same thing in Chrome, error code ERR_CONNECTION_RESET.

As soon as I turn off either HTTPS decryption or traffic capture in Fiddler I can browse the site again.

Any idea what might be the problem? I can browse other https websites fine, for instance https://www.httpsnow.org/ and https://google.com/

Hi,

I have a bit of conundrum. We have a webapp wich has built-in NTLM support. However this only works with Fiddler running in capture mode. If Fiddler is not running, the NTLM type 1 message that's supposed to be sent back to the server, by Internet Explorer, for some reason never gets sent.

To clarify, from http://davenport.sourceforge.net/ntlm.html#ntlmHttpAuthentication

=============================================================================================================
3. The client resubmits the request with an "Authorization" header containing a Type 1 message parameter.
=============================================================================================================

(3) never happens, unless fiddler is running in capture mode, then the ntlm handshake works like a charm.

Anyone knows what's going here?

cheers,Ritch

Hi Everyone  ,

I am a BI developer who is moderate experience on C# . I am very a frequent visitor to MSDN forums page , every time i go to web browser to login for seeing recent questions and replies in different languages. Recently i have an idea of developing an WindowsPhone for reviewing these forums in my mobile . 
I thought of implementing  this using RSS feeds of  MSDN forums . I am able to display the content from the forums to my windows App , but i am facing a challenge to provide the ability to user for replying a thread in forums or to a post a new question in forums . As this action requires a login to Microsoft account and this account would validate the authentication of user to perform those actions .

  So i thought Fiddler would help to find out how the request is going to server when i login using my Microsoft account in MSDN forums.  But i am not able figure out how to comprehend this information out of Fiddler . Please find the below snapshot that i got from Fiddler .  As far i understood ,the below highlighted text in Fiddler output is the page which is using to make commuincation to server from my local box .

Please suggest me way to find out how the Microsoft user name and password as being passed to server from my localbox , So that i can use that page in my WindowsPhone  app to make my requirement works.

Thanks in advance  . Any idea would be greatly appreciated.  

The title probably isnt the best way to describe what I need.

I tried using AutoResponder with no luck.
So I need to write a Fiddler Script.

There is a site making a request to a desktop application. (Through a Chrome Plugin.)
Then data is sent to the application which then modifies settings/options (Somewhat) based on that.
The reason AutoResponder wont work as well is because the request has data that is different each time.
So I was thinking about using FiddlerScript to 'match' a certain part of the request that doesnt change and then 'Auto Respond' with a file, instead of the original one.

Can anyone help me on how I would do this in FiddlerScript?

Sorry if its hard to understand, I barely understand all this fiddler stuff with the scripts and such.

But still, if anyone could help I would be SOOO grateful!

Hi Everyone  ,

I am a BI developer who is moderate experience on C# . I am very a frequent visitor to MSDN forums page , every time i go to web browser to login for seeing recent questions and replies in different languages. Recently i have an idea of developing an WindowsPhone for reviewing these forums in my mobile . 
I thought of implementing  this using RSS feeds of  MSDN forums . I am able to display the content from the forums to my windows App , but i am facing a challenge to provide the ability to user for replying a thread in forums or to a post a new question in forums . As this action requires a login to Microsoft account and this account would validate the authentication of user to perform those actions .

  So i thought Fiddler would help to find out how the request is going to server when i login using my Microsoft account in MSDN forums.  But i am not able figure out how to comprehend this information out of Fiddler . Please find the below snapshot that i got from Fiddler .  As far i understood ,the below highlighted text in Fiddler output is the page which is using to make commuincation to server from my local box .

Please suggest me way to find out how the Microsoft user name and password as being passed to server from my localbox , So that i can use that page in my WindowsPhone  app to make my requirement works.

Thanks in advance  . Any idea would be greatly appreciated.  

Hello, I have a curious problem. I have written a program which uses an algorithm combining a few system variables to create a HWID, and then checks this against some code on my server. If the HWID does not match, the user is kicked out. It's a form of product registration. I am aware that Fiddler is commonly used to bypass such checks, so in curiosity I downloaded Fiddler to see if it could be used to spoof the check. Fortunately, when I loaded Fiddler and started a capture, it did not pick up the traffic. But I for sure am actually not sure why; other requests which the application sends are plainly captured. I have attached both a Wireshark capture and the Fiddler capture. The code to check the HWID is located in /license.php. Wireshark easily picks this up, but it is gone without a trace in Fiddler. So my question is: why is the traffic not being captured? I've checked the source and see no reason as to why it would not be captured.

Hey, Fiddler is a great tool! It's an invaluable part of my workflow, and I really appreciate the work put into it.

My question is , is it possible to use the AutoResponder to respond with a 500 status code, or any other status code than 200 and 404? I have read the AutoResponder docs and can't see anything, but perhaps there's something I'm missing, or some undocumented *action that can do this?

My use case is that I want to test the error handling in my application's REST API by selectively breaking different paths and checking that the UI handles it sensibly.