Fiddler listens 8888 but can send any responce to 8888 ?

Hi, Murat--

I think you're asking: "How can I configure things so that my program can load http://127.0.0.1:8888/?target=http://example.com/page and Fiddler will download the requested page and send it back to my program as the response"? 

Is that what you're asking?

If so, the task is pretty simple; you'd click Rules > Customize Rules. Scroll to OnBeforeRequest and add code inside it like:

   // If request targeted to Fiddler, change URL to the value of the TARGET= url parameter
   if (oSession.host == "127.0.0.1:8888") 
   {
     oSession.fullUrl = oSession.fullUrl.Substring(oSession.fullUrl.IndexOf("target=")+7);
   }

Regards,
Eric Lawrence
Telerik