modify response not working

[Raffael]

Hi

I set a breakpoint after response and changed a value

then i hit the run to completion button an the changed value shows up in the browser but after a few seconds the old value displayed again

 

but there is no new traffic shown in fiddler

so why the change is not working?

[Eric R | Senior Technical Support Engineer]

Hi Raffael,

This is happening because server will never see the Request changes and the original response will be sent to the client. For example, using the Automatic Breakpoints Rule for the OnBeforeResponse session event enables changing the Request. Although, the change will only be reflected in Fiddler since the request has already been sent and a Response has been received. 

If the issue persists, I'll need more information in order to troubleshoot. If this is the case, can you provide the following information?

1. Detailed explanation of how the Breakpoint is being set.

2. A Session Archive of the modified response. 

3. Output of the Fiddler Log Tab.

4. Any screenshots that you think may help.

I hope this helps. Please let me know if you need any additional information. Thank you for using the Fiddler Forums.

Regards,

Eric R | Technical Support Engineer
Progress Telerik