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)
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)
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 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: 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.

 

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.

Under Review
Last Updated: 24 Dec 2018 18:18 by Jithin
There are some Files, fiddler needs write privileges:

rm: cannot remove '/opt/fiddler/listeningProcess.txt': Permission denied
rm: cannot remove '/opt/fiddler/gsettings.txt': Permission denied
rm: cannot remove '/opt/fiddler/proxiesFromInterfaces.txt': Permission denied
...

If this file is stored with the exe file, it is not possible to install fiddler in /bin or /opt and run without root privileges.

I think it would be good to locate that file in the users home folder or in /tmp.
New
Last Updated: 24 Dec 2018 15:51 by Den
Created by: Den
Comments: 3
Type: Feature Request
1

please add comments into a fiddler AutoResponder. And maybe hierarchy view for i can  create folders and create responses inside folders (for grouping). With group switch on|off.

 

 

In Development
Last Updated: 24 Dec 2018 12:27 by Alex
Created by: Kostas
Comments: 22
Type: Feature Request
56
I find myself applying the same filters again and again on each launch of Fiddler (I mean the filters listed below the list of requests).

I think it would be really great if you could allow the restoration of previously applied filters (e.g. by having a save/load filters option).

Also, allowing to filter out by "Request Method" would be great too.

Congratulations on this tool, by the way.

It is really great. :)
Under Review
Last Updated: 03 Dec 2018 22:50 by Christopher
Created by: Isaac
Comments: 2
Type: Feature Request
11
Lots of development software has dark themes because it is less stress on your eyes and looks cool.
Under Review
Last Updated: 08 Nov 2018 17:28 by Imported User
Sometimes,I need to know response json node's count,but I can only paste it into the json editor to see the quantity.

Please check the pictures in the attachment.
Under Review
Last Updated: 08 Nov 2018 06:00 by A
I'm using Fiddler v4.6.20173.38786 (Built: Friday, September 15, 2017). When I click on the Customize Rules menu entry there is a message box that says "Unable to load Fiddler for code-completion support". After I click OK to that the Fiddler script editor will open normally.
Under Review
Last Updated: 07 Nov 2018 17:19 by Imported User
Thanks for the note! P3P is now pretty much defunct (Windows 10 dropped it).

The redirector can be retargeted to the URL: https://web.archive.org/web/20080901012040/https://msdn.microsoft.com/en-us/library/ms537343.aspx#unsatisfactory_cookies
Under Review
Last Updated: 06 Nov 2018 11:04 by Imported User
Created by: Eric
Comments: 1
Type: Feature Request
1
See https://fiddler.ideas.aha.io/ideas/FID-I-255
Under Review
Last Updated: 06 Nov 2018 06:00 by Imported User
Fiddler swaps out the real proxy settings for localhost when in use. When you disconnect or close it, it restores the proxy settings. However, if the system crashes or power fails while Fiddler is in use, upon rebooting the real proxy settings are of course missing, they're still set to localhost. I would expect that if were to then run Fiddler, it would find those proxy settings again so that if I run Fiddler and close it again, my original proxy settings would be restored. Sadly this doesn't happen so in this scenario I have to manually set up my proxy settings again. Can this be implemented?
Under Review
Last Updated: 05 Nov 2018 06:00 by Eric
and all request from browsers are like this
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