New
Last Updated: 18 Mar 2019 15:45 by Alex
Created by: Alex
Comments: 0
Type: Bug Report
0

make windows have 2 languages for keyboard, e.g. en-us, and ru-ru; 

make key shortcut to switch langs: alt+shift as usual;

select current lang: eng

run fiddler until it accumulates some traces;

select one of the trace records, click on request panel, click on response panel, notice: lang has switched to RU now.

New
Last Updated: 18 Mar 2019 11:12 by Alexander
New
Last Updated: 12 Mar 2019 13:59 by Ravindhranad
Created by: Ravindhranad
Comments: 0
Type: Bug Report
0
I have Windows UWP app called HP Smart downloaded from Microsoft Store. When I enabled HP Smart application using Win Config menu and later I have enabled HTTPS traffic. After that I have started HP Smart application. But I see traffic from app as tunnel.. but app is not receiving any responses from the servers. I have exported the capture, please help me to fix this issue. Please notice packet no.2, I am not able to get any response. But if I stop fiddler then HP Smart App is able to communicate and get the data response for this request.
New
Last Updated: 11 Mar 2019 20:25 by Eric

"Target Any Process" feature no longer working with Chrome. It used to work but no longer works specifically with Chrome. Still works with other processes. Capturing still works with Chrome as long as I am not using the "Target Any Process" feature.

Approved
Last Updated: 11 Mar 2019 13:18 by ADMIN
Currently by listening to FiddlerApplication.OnWebSocketMessage it's possible to modify the incoming & outgoing messages but it's not possible to send independent direct messages in or out.

Adding the ability to send direct messages will give more freedom on injecting custom messages in both directions, repeating server response messages etc.
Currently if you need to inject an outgoing message you need to wait for the client to generate a message and only then intercept, modify and forward it. Sometimes the client may wait longer times to respond and a direct message mechanism would be quite useful to generate quicker responses.

From: How to send a new web socket message instead of modifying an existing one?
 (https://groups.google.com/forum/#!topic/httpfiddler/CC5XxiWfpuI) Related to: Add properties to WebSocket object (https://fiddler.ideas.aha.io/ideas/FID-I-146)
New
Last Updated: 25 Feb 2019 23:34 by Eric

The HTTP2 protocol has specific requirements about the characters that are valid in header names. If a server attempts to use one of these over a HTTP2 connection, the client will complain of a ERR_SPDY_PROTOCOL_ERROR.

This is particularly problematic because the problem will magically "disappear" when Fiddler is in use because Fiddler doesn't support HTTP2, and thus the problem characters are silently allowed by the browser using HTTP/1.1. https://twitter.com/ericlaw/status/1100175636595965957

Therefore, Fiddler's HTTP Protocol Violation feature should warn if a HTTPS response contains an illegal character in a HTTP header name or value.

Legal characters for names: abcdefghijklmnopqrstuvwxyz0123456789!#$%&'*+-.^_`|~

Legal characters for values '\t', '  ', 0x21 to 0x7E, and 0x80 to 0xFF.

https://tools.ietf.org/html/rfc7540#section-10.3


			
Under Review
Last Updated: 20 Feb 2019 23:45 by Roberto
Created by: Imported User
Comments: 1
Type: Feature Request
2
Once I had gotten Fiddler to run (had to tell Mono to run in 32 bit mode) and I had re-created the settings.txt file, I received this error when trying to capture traffic:

Fiddler/FiddlerAttach.applescript:7:87: execution error: /bin/sh: USB,127.0.0.1,8888,on,127.0.0.1,8888,on,0,0,off,0,0,off: command not found (127)
New
Last Updated: 20 Feb 2019 10:42 by ADMIN

This only occurs when double-clicking a SAZ file from Explorer when Fiddler isn't open.

v5.0.20182.28034 for .NET 4.6.1

---------------------------
Script Failure
---------------------------
Failed to load script.
 Microsoft.JScript.JScriptException: Type mismatch

   at Microsoft.JScript.Convert.CoerceT(Object value, Type t, Boolean explicitOK)

   at Fiddler.ScriptNamespace._Startup.Startup()

   at Microsoft.JScript.Vsa.BaseVsaEngine.Run()
Microsoft.JScript.JScriptException: Type mismatch

   at Microsoft.JScript.Convert.CoerceT(Object value, Type t, Boolean explicitOK)

   at Fiddler.ScriptNamespace._Startup.Startup()

   at Microsoft.JScript.Vsa.BaseVsaEngine.Run()   at Microsoft.JScript.Vsa.BaseVsaEngine.Run()

   at Fiddler.FiddlerScript._LoadScript(String sScriptFilename, Boolean bPlaySounds) in C:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Application\Scripting\Scripting.cs:line 315

   at Fiddler.ScriptBase.LoadRulesScript(Boolean bPlaySounds) in C:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Application\Scripting\ScriptBase.cs:line 198
---------------------------
OK   
---------------------------

 

This reproduces even when the FiddlerScript is basically empty, like so:

import Fiddler;

class Handlers
{

}

 

 

Sadly, because Fiddler's code has been obfuscated, it's difficult to see what caused this regression.

Completed
Last Updated: 19 Feb 2019 11:49 by Ian
Created by: Imported User
Comments: 5
Type: Feature Request
9
My Surface is work on 150% DPI , The App looks unclear.

THX
New
Last Updated: 13 Feb 2019 23:29 by Fergal
Response headers added from Fiddler-script (in reverse-proxy setup) are not sent to client. Even though the session shows them as sent. However, if I set a bpafter for that particular url it works! I Don't need to do anything else, just set the bpafter ang type 'g' to let it go. The client then see the response header.
New
Last Updated: 13 Feb 2019 21:19 by Eric
Created by: Qiu
Comments: 1
Type: Feature Request
0

Request a lighweight proxy forwarder like combination between Proxifier + AppContainer Loopback Excemption Utility in 1 desktop app. Since Fiddler is too heavy in CPU usage and Proxifier cannot forward any proxy to UWP desktop app (any apps from Windows Store).... no need extra feature but just a proxy forwarder like Proxifier + AppContainer Loopback Excemption Utility that works in any Desktop software environtment like OpenVPN adapter. Thanks.

New
Last Updated: 13 Feb 2019 21:17 by Eric
Created by: greg
Comments: 1
Type: Feature Request
0

The Tools -> HOSTS is a great feature, especially for situations that prevent local admin rights.  I find it difficult to know that the redirection is functioning when looking at the capture log.  It would be nice if something visual would standout to help draw attention that this rule was applied.

Thank you!

New
Last Updated: 08 Feb 2019 16:51 by Eric
Created by: Dave
Comments: 5
Type: Feature Request
1

It would be really great to be able to view requests and responses as a formatted json string.  Currently, you can show JSON, which uses some tree format, and you can show raw, which is just a flat hard to use string.

It would also be great to be able to format json inside the request composer so it can be easy to modify.

New
Last Updated: 01 Feb 2019 16:14 by Eric
Created by: Ashish
Comments: 1
Type: Feature Request
0
I use Fiddler to compose requests in addition to tracing HTTP requests going through my machine. However, Fiddler really lacks in maintaining history of your previously composed requests. In this area, POSTMAN really shines, and therefore, some folks might move to POSTMAN. We don't have to have fancy features but the ability to organize your requests in the History will be much appreciated.
New
Last Updated: 01 Feb 2019 16:12 by Eric
Created by: Ahsen
Comments: 2
Type: Bug Report
2

Hello,

I am getting the following error in fiddler and without Capture HTTPS CONNECTs it works, also in the Protocols I have enabled: <client>;ssl2;ssl3;tls1.0;tls1.1;tls1.2

fiddler.network.https> HTTPS handshake to <domain> (for #6) failed. System.Security.Authentication.AuthenticationException A call to SSPI failed, see inner exception. < The message received was unexpected or badly formatted

Win32 (SChannel) Native Error Code: 0x80090326

Ashen

[Edited by Telerik Staff to remove personal information and convert to bug report]

New
Last Updated: 01 Feb 2019 09:37 by sim

Some responses can not be shown in fiddler,for example,i am analysising the package of 植物大战僵尸2(pvz2) for ios.it shows "400 .net error response headers...",but other app like burpsuite can deal with it well...

 

so i've to set the proxy of iphone to "192.168.1.2:8080" and the gateway of fiddler to "127.0.0.1:8888" where burp listens, then fiddler works ok...but it's also too complicated.

 

thx for your reply...(may u have a try?)

New
Last Updated: 31 Jan 2019 20:55 by Via

Hi guys. 

I investigate responses from . And Fiddler is tool for this.

But now I need  logs from Fiddler for 2-5 days and compare responses.

Fiddler grabs a lot of memory during 1 day and may cause my PC out of memory.

Request:

Automate autosaving saz files 4 hours with time-date in saz name, clear capture dialog and do it in the loop each next 4 hours.

 

Initial Review
Last Updated: 29 Jan 2019 23:45 by Kevin

When the PDFView Inspector is installed (v1.1.0.3, whose public override int GetOrder() method returns 500), the Response Inspectors are rendered out of order, such that the Headers/Transformer inspectors are not at the front of the list.

 

 

New
Last Updated: 08 Jan 2019 18:19 by Eric
Created by: Jochen Wezel
Comments: 2
Type: Feature Request
5

Since more and more websites enforce you to use tls 1.2 (and don't support tls 1.0 any more), I suggest that the list of protocols is automatically extended with tls1.2 by a next fiddler update - or at least there should be a single-time question box with Yes-No-Cancel to extend it.

Also see reference at https://www.telerik.com/forums/some-https-sites-are-unaccessible-when-using-fiddler

New
Last Updated: 08 Jan 2019 09:18 by Franky
Created by: Franky
Comments: 4
Type: Feature Request
0

Hi,

I'm developing an application with Angular using Windows Authentication.

I tend to have Fiddler running all the time as it provides the authentication (using the Fiddler Automatically Authenticate flag).

As I have it running continuously the request pane gets quite large and the memory footprint increases as a result.  This is fine, and just the nature of the beast.

Periodically I clear the request pane out with CTRL+X but I have to maximize the Fiddler window first.

It would be really helpful if there was an additional option to clear the request pane from the menu on the system tray icon (please see attached).

Many thanks, and keep up the good work.  Cracking tool.

Franz.

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