Getting access to a binary response byte-by-byte in classic asp/JScript
- by user89691
I asked this question a few days ago but it seems to have gone cold fairly quickly. What I want to do is pretty simple and I can't believe someone hasn't figured it out.
Solution needs to be JScript classic ASP. I am reading a file from a remote server and I want to process that (binary) file on my server and spit the results back to the client as XML.
Here's a simplified version of what I am trying to do. This code runs, or will if the URL is filled in for your site. This test file is readbin.asp. It reads a file called test.bin, and writes the result to a stream. I used a stream because that makes it easier to read the file and parse the contents. Basically I want to:
while not end of stream
read byte from stream
process byte
here is readbin.asp:
<%@ LANGUAGE = JScript %>
<%
var url = "http:// (... your URL to the file test.bin goes here...) " ;
var xmlhttp = Server.CreateObject ("MSXML2.ServerXMLHTTP") ;
xmlhttp.open ("GET", url, false) ;
xmlhttp.send () ;
var BinaryInputStream = Server.CreateObject ("ADODB.Stream") ;
BinaryInputStream.Type = 1 ; // binary
BinaryInputStream.Open ;
BinaryInputStream.Write (xmlhttp.responseBody) ;
BinaryInputStream.Position = 0 ;
Response.Write ("BinaryInputStream.size = " + BinaryInputStream.size + "<br>") ;
Response.Write ("BinaryInputStream = " + BinaryInputStream + "<br>") ;
var ByteValue = BinaryInputStream.read (1) ;
Response.Write ("ByteValue = " + ByteValue + "<br>") ;
Response.Write ("typeof (ByteValue) = " + typeof (ByteValue) + "<br>") ;
%>
My problem is: how do I get ByteValue as a number 0..255? typeof (ByteValue) is "unknown".
Ord?? Byte()?? Asc?? Chr??
