Fiddler: Is it possible to replace part of URL using OnBeforeResponse function?

Question

if (oSession.HostnameIs("www.youtube.com") && oSession.oResponse.headers.ExistsAndContains("Content-Type","text/html")){

                oSession.utilDecodeResponse();
                oSession.utilReplaceInResponse("old string","new string");
            }

Please tell me if I'm using the above script correctly or not.

Basically, How do I to replace/hide the word dolphin from the search query ? I don't want the client browser(my Google Chrome) to see it by any means.

Example : http://www.youtube.com/results?search_query=dolphin&page=3.

If this is not possible with Fiddler,then what other application do you recommend?

Thank you

Answer 1

You can replace anything in the url inside OnBeforeResponse, but doing so won't do anything useful, because the URL has already been sent to the server by then, so changing it that late has no visible impact to anything outside of Fiddler.

If you want to change the URL, do so inside OnBeforeRequest. In your FiddlerScript, look for the urlreplace handler to see how that works.