Retrieving data from httprequest - vbscript

Question

I'm working on this server side asp script.It is supposed to receive a xml stream from a web app and save it in a xml file. The problem is I'm haven't been able to read this stream. I used different methods and I can't seem to find the right one. One other thing is for testing I'm using rest console add on for chrome and it seems to work with no problems but when my client sends the stream I'm unable to read it and they receive a code 500 error.
at first I tried reading the stream in binary mode then converting it
function readContent()
dim a,b
a=Request.TotalBytes
b=Request.BinaryRead(a)
writeInLogFile(" ")
writeInLogFile(Time & Request.ServerVariables("ALL_RAW"))
writeInLogFile(Time & " Data read in binary mode with a size of " & a)
readContent = URLDecode(BytesToStr(b))
writeInLogFile(Time & " the length of the converted string is : "& len(readContent))
end function
but here's what I keep getting on my log file
17:12:10Content-Length: 8416
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Authorization: Basic
Host:
User-Agent: Jakarta Commons-HttpClient/2.0.2
17:12:10 Data read in binary mode with a size of 8416
17:12:10 Converting binary to string
and then it crashes when I try to write the converted string
then I switched to request.form
function readContent()
'writeInLogFile(Time & " " & URLDecode(Request.Form))
writeInLogFile(Time & Request.ServerVariables("ALL_RAW"))
readContent = URLDecode(Request.Form)
writeInLogFile(Time & " the length of the converted string is : "& len(readContent))
end function
but yet again when testing via rest console all is working and when actually receiving the stream from my client it just crashes.
Anyone faced a similar problem, or has an idea to how can I solve this thing
thanks in advance
update :
here is the decoding function
FUNCTION URLDecode(str)
'// This function:
'// - decodes any utf-8 encoded characters into unicode characters eg. (%C3%A5 = å)
'// - replaces any plus sign separators with a space character
'//
'// IMPORTANT:
'// Your webpage must use the UTF-8 character set. Easiest method is to use this META tag:
'// <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
'//
Dim objScript
Set objScript = Server.CreateObject("ScriptControl")
objScript.Language = "JavaScript"
URLDecode = objScript.Eval("decodeURIComponent(""" & str & """.replace(/\+/g,"" ""))")
Set objScript = NOTHING
'writeInLogFile(Time & " the length of the converted string is : "& len(URLDecode))
END FUNCTION

Answer 1

The encoding that client said would be sent was not the same as actually sent by the stream.
Request.Form is the answer.