Hi,

Quick question regarding the ability to programmatically obtain the ui-comment set against a session item in C#.

Currently I can set a value:

oSession.oFlags["ui-comments"] = "Comment Added"; 

This is displayed in Fiddler comments column against the request.

But when I attempt to get the value back out, in AutoTamperRequestBefore or AutoTamperResponseBefore there isn't a 'ui-comments' flag available.

Any suggestions gratefully received. 

Many thanks, and keep up the good work.

 

How to fix "The certificate of the peer does not match the expected hostname"?

Ive installed Fiddler on my PC but whenever i enable capturing of web traffic i always am unable to load web pages.

This error appears...

This site can’t be reached
The webpage at https://www.google.com/ might be temporarily down or it may have moved permanently to a new web address.
ERR_TUNNEL_CONNECTION_FAILED

Im using Chrome browser is this important...

Why is this happening and how can i fix it? 

As far as I know, in fidlercore, you can use

oS["log-drop-request-body"] = "streamingThisRequest";

oS["log-drop-response-body"] = "streamingThisResponse";

to release the request body or response body.

So, in which event processing should I use these two flags?

And how long will the request body and response body be cached by default when these two flags are not used?

Hi, i have a question about https, if the browser make a https request to server with custom certificate that have key inside and i don't have private key for that certificate, will i be able to intercept that requests using fiddler and see response or it won't work without private key for certificate?

 

Thanks in advance.

Dear all,

I am working on a project that requires communicating and transferring files to a server that requires SSL communication. I'm currently developing in C# .NET 4.7.2 and have utilized RestSharp to communicate to this server via POST command. The issue I am running into now is I keep getting a certificate chain error, and I have captured this with fiddler. Fiddler gives me a popup as shown in the attachments. The curious thing is, if I don't have fiddler open, my code will not work and the file transfer fails, however, when fiddler is open and monitoring all processes, it will popup the certificate error, and if I click YES then the file will get transferred correctly.

Can any of the devs provide some insight on how I should implement my code to perform the same behavior that Fiddler does when ignoring unsafe errors? I have searched other resources online and have not been able to find a working solution.

I have found a few blog articles like this one: https://www.telerik.com/blogs/understanding-fiddler-certificate-generators

which have provided some insight but if anyone has more detail on how this implementation works I hope to build something similar like this in my application.

 

Really appreciate your help,

Thank you!

garyd

Cannot sniff python script from command-line anymore after new update.

the script is using python-requests to make a get or post requests.

Last seen working on v5.0.20182.28034

 

 I found that fiddlercore will customize the return content based on the HTTP status code. Can I ban this behavior?

This page has been personalized for various status codes, but Fiddlercore will turn the customized content into Fiddlercore error message. For example, the web 

page will display some contents like "Http status: 502 Fiddler - Connection Failed ajaxOptions: error thrownError..." if the status code is 502. But at this time, I only

 want the page to show that the connection has failed without the specific error message.

I wanna know what can I do to show original customized message in Fiddlercore.

Hi,

 

When i capture JSON files, (for this particular site) i use EXPORT RAW FILES. 

It seems to capture the text i need, Except that each Json file is just one long long line of text..  i created a php script to extract what i need & make it into multiple lines. (however this is a slow process).

 

Is there a way in Fiddler 4, to identify a special character - EG   curly brace { or }  and make it "save" a new-line after (or before) this character.  So when i view the resulting file, is already in multiple lines...

 

 

My Fiddler crashed the last Friday, and after that, something in the background always auto-enable proxy settings in Internet Options even though the Fiddler isn't running, as a result, I couldn't open any web pages and have to manually disable the proxy, but the proxy would be re-enabled again in few minutes and I have to repeat that again and again, any advice to identify and fix that? Thank you.