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Hello,

 

I'm trying to capture HTTPS traffic made by a command line application I run on the cmd terminal.

I'm using Windows 10, proxy is defined and I capture all communication done from browsers or other applications, but don't see anything when I run this app (which I know for a fact does HTTPS communication).

Am I missing something? Should I define the proxy differently? Please assist.

 

Best,

Segev.

Nick Iliev
Telerik team
 answered on 02 Jun 2020
4 answers
282 views

I download Fiddler from fiddler-everywhere-osx. But I found no trust root certificate button in HTTPS tab in Settings.

Then I manually trust the fiddler root cert in KeyChain, but still can't capture any traffic from Safari.

Any one can help on this problem?

Yong
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 answered on 02 Jun 2020
2 answers
898 views

Hey,

In fiddler Option-Gateway, we can configure "Manual Proxy Configuration" which fiddler will redirect the traffict to,

I need to create an extension to specify different gateway proxy for different host name, could anyone give me any lead?

For instance, in the extension, If the request host is google.com, I will set Proxy as 192.168.0.1:8000,

if request host is yahoo.com, I will set set Proxy as 192.168.0.1:8001 ...

I can't find any api change the proxy, any help will be appreciated.

Best wishes,

Jessie

Jessie
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 answered on 02 Jun 2020
10 answers
776 views

Hi all,
I tried to start app but every time nothing happens except short appearing a splash screen. Bellow detail from terminal:

====

17:18:06.659 › Initializing splash screen.
17:18:06.821 › Attempting to run server - 5 attempts left.
17:18:06.822 › Generating random port.
17:18:06.823 › Trying to start server at port [23393].
17:18:08.446 › Fetching .NET Core server status.
17:18:08.586 › Error occurred while fetching .NET Core server [23393] status. Error message: connect ECONNREFUSED 127.0.0.1:23393
17:18:08.586 › Attempting to run server - 4 attempts left.
17:18:08.587 › Generating random port.
17:18:08.587 › Trying to start server at port [65187].
17:18:09.161 › Fetching .NET Core server status.
17:18:09.284 › Error occurred while fetching .NET Core server [65187] status. Error message: connect ECONNREFUSED 127.0.0.1:65187
17:18:09.285 › Attempting to run server - 3 attempts left.
17:18:09.285 › Generating random port.
17:18:09.286 › Trying to start server at port [27060].
17:18:09.882 › Fetching .NET Core server status.
17:18:10.017 › Error occurred while fetching .NET Core server [27060] status. Error message: connect ECONNREFUSED 127.0.0.1:27060
17:18:10.017 › Attempting to run server - 2 attempts left.
17:18:10.018 › Generating random port.
17:18:10.018 › Trying to start server at port [2140].
17:18:10.622 › Fetching .NET Core server status.
17:18:10.764 › Error occurred while fetching .NET Core server [2140] status. Error message: connect ECONNREFUSED 127.0.0.1:2140
17:18:10.765 › Attempting to run server - 1 attempts left.
17:18:10.766 › Generating random port.
17:18:10.767 › Trying to start server at port [6535].
17:18:11.363 › Fetching .NET Core server status.
17:18:11.493 › Error occurred while fetching .NET Core server [6535] status. Error message: connect ECONNREFUSED 127.0.0.1:6535
17:18:11.493 › Attempting to run server - 0 attempts left.
17:18:11.494 › Maximum number of attempts reached - quitting application.
17:18:11.509 › Generating random port.
17:18:11.509 › Trying to start server at port [1608].

Nick Iliev
Telerik team
 answered on 01 Jun 2020
3 answers
201 views

Hi 

I want to ask that when will be Fiddler Everywhere with all its webinar demo functionalities (new tabs for session view, filters, comments, auto responder, etc) will be launched

Currently i can't prefer using this version 5, because there are many functionalities of version 4 that are missing in it

Nick Iliev
Telerik team
 answered on 01 Jun 2020
2 answers
210 views

I recently installed Fiddler Everywhere for MacOS from the product page https://www.telerik.com/fiddler-everywhere.

However after install I noticed it doesn't have half of the features that all the screenshots and documentation are featuring. Attached is a screenshot of the features I see when inspecting a request to CNN. No Auto Responder features, and no Web Sessions toolbar with filtering. Definitely doesn't match screenshots seen on the product page and documentation.

Is this expected? If so, this essentially makes Fiddler Everywhere for MacOS a glorified Network Inspect panel.

I am also having problems using the "Capture" button as seen in other threads and cannot make it work with restarts, reinstalls, starting in sudo, etc.

Any help appreciated as Fiddler is unusable in this featureless state.

Nick Iliev
Telerik team
 answered on 01 Jun 2020
2 answers
8.5K+ views
If I activate fiddler, all my HTTPS requests start to fail...
Nick Iliev
Telerik team
 answered on 01 Jun 2020
3 answers
112 views

     I tried logging into my Telerik account using the latest FireFox browser and there are a boatload of error messages in the developer's console. I could not do it. I had to go back to Chrome to login to this website.

Also, the latest version of Fiddler which I downloaded and installed yesterday will correctly capture my Intranet Chrome traffic but none of my Intranet FireFox traffic. Where is the support for the FireFox web browser?

Nick Iliev
Telerik team
 answered on 01 Jun 2020
6 answers
660 views

I'm not sure how to describe this with any detail.  I have a JavaScript app.  It works fine without Fiddler running.  When I run Fiddler and enable capturing and decrypting of HTTPS, I get JavaScript errors when running the app.  All the other HTTPS stuff I've tried works fine.  (If I turn off HTTPS decrypting, the JavaScript app works too.  So it's something related to HTTPS decrypting.

I tried another product called Charles, and the JavaScript app works fine and Charles captures and decrypts all HTTPS traffic from this JavaScript app just fine.

But I'd rather use Fiddler.  But I can't figure out what the issue might be with Fiddler HTTPS decrypting.

I have already reset the Fiddler certs several times with no change.  Again, all other HTTPS works and decrypts correctly.

Eric R | Senior Technical Support Engineer
Telerik team
 answered on 29 May 2020
0 answers
170 views
Hello Telerik team,
Thanks for Fiddler, it is a powerful tool for testing. I am using Fiddler V5.0.20202.18 for NET 4 on Windows 7.

I am sniffing and capturing HTTPS traffic generated by selenium + chromedriver on YouTube. For testing purposes, I export each test as a HAR file to examine its content.

My problem is that for all exported HAR files, the query string section is empty ("queryString": [],) . Instead if I generate the HAR file using devtool, I get those values.

Can you give me some guide on how I can get this content using Fiddler.

I would greatly appreciate any help,
Laura
Top achievements
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 asked on 27 May 2020
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