HTML: application/x-www-form-urlencoded

[agmorgan]

Im only sending a series of numbers added together in a string.

To demonstrate what is happening download CVMichaels example CGI program
http://www.vbforums.com/showthread.p...&highlight=cgi
(bottom post in thread) and add a couple of lines to write the buffer to a log file e.g

Sub GetFormData()
    Dim DataLen As Long, sData As String, lBytesRead As Long, rc As Long
    
    If UCase(Trim(Environ("REQUEST_METHOD"))) = "POST" Then
        DataLen = Val(Environ("CONTENT_LENGTH"))
 
        If DataLen > 0 Then
            sData = String(DataLen, 0)
            rc = ReadFile(hStdIn, ByVal sData, DataLen, lBytesRead, ByVal 0&)
            sData = Left$(sData, lBytesRead)
[B]            Open "log.txt" For Append As #29
                Write #29, sData
            Close #29[/B]
        End If
    End If
    
    PairData sData
    PairData Environ("QUERY_STRING")
End Sub

Now paste 70kb of data into the form field and submit it.
Depending on your server you wont necessarily have all the data in the log file.

Note that it is a string not a file upload.
This is because my application is an ActiveX control that collects lots of data from a measureing instrument and adds it all together as a string.
The Onclick command of the (HTML) button then passes this string value to the (HTML) form and submits it.