Please somebody help me

[eric]

Hi everyone ! Can please somebody help me with a fiddler - script , to compile me a fiddler script from zero to replace 2 Json values on a website before-request ! i tryed with this : 

 

  static function OnBeforeRequest(oSession: Session)

 if(oSession.HostnameIs("mywebsite") && oSession.HTTPMethodIs("POST") && oSession.uriContains("/some.web/data/Entry/Validate"))           
    
        {  
  oSession.utilDecodeResponse();  
  var body = oSession.GetResponseBodyAsString();



 try {
                var dataJson = Fiddler.WebFormats.JSON.JsonDecode(body).JSONObject;
            
            
                var Co = (null);   // HERE I MUST REPLACE WITH (null)
                var Cap = MY-VALUE-HERE-LETTERS-AND-NUMBERS;  //EXAMPLE: FATH45786544565342U7  
            
                dataJson["Dispo"]["{}"]["Ben"]["Co"] = Co;
                dataJson["Dispo"]["{}"]["Ben"]["Cap"] = Cap;
          
            }
            catch(e) {
                FiddlerObject.log(e);
            }
        
                    
            body = Fiddler.WebFormats.JSON.JsonEncode(dataJson);       
          

}


///// i want to place the code in fiddler-script JS ////  please help me with a solution ! i am also ready to pay in btc for who want to help me ! thank you in advice !

[Nick Iliev]

Hi Eric Mathew,

 

Once you get and update the JSON object, you need to convert it to bytes and set the modified bytes as HTTP Request body. Refer to the following SO thread for a basic example of how that would work:

https://stackoverflow.com/a/38461116/4936697

 static function OnBeforeRequest(oSession: Session) {

    if(oSession.HostnameIs("localhost")) {
        oSession["ui-backcolor"] = "lime";
        oSession["ui-bold"] = "Bold text here"

        // Convert the request body into a string
        var oBody = System.Text.Encoding.UTF8.GetString(oSession.requestBodyBytes);

        // Convert the text into a JSON object
        var j = Fiddler.WebFormats.JSON.JsonDecode(oBody);

        //Change the ConsistId value
        j.JSONObject["ConsistId"] = "A9C01636-0D8E-4C92-B09C-8413366E2D79";

        // Convert back to a byte array
        var modBytes = Fiddler.WebFormats.JSON.JsonEncode(j.JSONObject);

        // Convert json to bytes, storing the bytes in request body
        var mod = System.Text.Encoding.UTF8.GetBytes(modBytes);
        oSession.RequestBody = mod;

    }

 

Regards,
Nick Iliev
Progress Telerik