Could you please provide a sample code that we can review and obtain a better perspective on what the issue might be.
Here is a sample application that you can use as a starter point for integrating Fiddler Core - Fiddler Core Demos. It is in .NET but it might be useful for you to better understand the concepts. Fiddler Core exposes a collection of events that your application can hook on. Keep in mind that if you do not provide a handler with the correct signature the integration won't work. This is an example of a possible reason why your solution might not work.
Could you please provide a sample code that we can review and obtain a better perspective on what the issue might be.
Here is a sample application that you can use as a starter point for integrating Fiddler Core - Fiddler Core Demos. It is in .NET but it might be useful for you to better understand the concepts. Fiddler Core exposes a collection of events that your application can hook on. Keep in mind that if you do not provide a handler with the correct signature the integration won't work. This is an example of a possible reason why your solution might not work.