Wanting to write custom rules for Fiddler...

[Clio]

Hello, first time poster. 

I work for a mobile games company, and in my previous job we used Fiddler and custom rules for creating quite extensive QA debugging tools. 

However, the company I now work for severely underutilized 3rd party tooling in their processes so i'd like to work on writing custom rules in Fiddler for my team to use. 

Here's the kicker- While I understand the fundamentals of how Fiddler and web debugging works I have no prior knowledge of writing code languages in any context. 

I'm hoping someone here will be able to provide advice on where I should start in order to understand how I can achieve what I want. 

Thank you!

 

[Nick Iliev]

Hello Clio Adams,

 

With Fiddler, you have multiple options to add additional debugging functionalities through the UI and programmatically while using FiddlerScript. For example, via the UI, you can create your own Auto Responder MATCH rules and ACTIONS. This is a built-in tool that will allow you to use regex, external files, or the predefined templates.

 

You could also create custom rules (Rules > Custom Rules) to extend the core Fiddler functionality while using FiddlerScript programmatically. If you want to deep dive into that possibility, then I would suggest going through the following links:

 

Creating Custom Rules KB article - https://docs.telerik.com/fiddler/Extend-Fiddler/AddRules

Understanding FiddlerScript - https://www.telerik.com/blogs/understanding-fiddlerscript

FiddlerScript Cookbook - https://www.fiddlerbook.com/fiddler/dev/scriptsamples.asp

 

Given that FiddlerScript is based on JScript.NET, it would be good to have some knowledge about JScript.NET.

 

 

Regards,
Nick Iliev
Progress Telerik