How to convert the form-data body request to json body request automatically in fiddler everywhere

[Zh]

I have a C# rule script in fiddler classic, which convert the http request form-data body from "key1=value1" to json {"key1": "value1"}

I am trying to migrate to fiddler everywhere, but I have no idea how to achieve this in fiddler everywhere, where's rule script in fiddler everywhere?

[Nick Iliev]

Hello Zh,

 

Fiddler Everywhere does not include a scripting engine; instead, it features the Rules user interface. This interface allows you to create rules based on different matching conditions and actions.

In your situation, you can create a rule that targets the specific endpoints and modifies both the HTTP request headers and body. For example, you might create a rule similar to the following:

Once the rules are created, they should be activated in the Rules tab.

And then any matching endpoint will have its request headers and body modified.

 

You can learn more about the Rules engine and see various examples for creating and using rules through the following articles:

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/modify-and-filter-traffic/modify-traffic-with-rules 

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/modify-and-filter-traffic/mocking-traffic-with-rules 

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/modify-and-filter-traffic/conditions-and-actions 

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/rules-presets 

 

Regards,
Nick Iliev
Progress Telerik

[Zh]

How to modify body dynamically? likely

"key1=value1" to json {"key1": "value1"}

"anyKeyFromFrontend=anyValueFromFrontend" to json {"anyKeyFromFrontend": "anyValueFromFrontend"}



For number data, it will convert without quote

"anyKeyFromFrontend=1234" to json {"anyKeyFromFrontend": 1234}



I converted it in fiddler classic, with C# by parsing raw HTTP form-data body and human convention.

[Nick Iliev]

Hey Zh,

 

At present, Fiddler Everywhere does not support dynamic data modifications, so you must use hardcoded values to create the above rule. I have submitted this as a feature request on a public GitHub thread, which you can monitor for updates: https://github.com/telerik/fiddler-everywhere/issues/123.