PythonCOM in ASP: very dodgy behaviour

[Dale Strickland-Clark]

This is turning into a bit of a puzzle. I posted about the problem a
while ago but didn't get much response. We really need to sort this
out now. 

We are trying to store a Python object in the ASP session object but
it won't play ball. The object retrieved isn't the same as the one
that went in.

I've reduced the problem to two small modules. One ASP/Python, the
other pure Python.

The Python module is a simple object with a COM interface. The ASP
module instantiates the Python object and then tries to wrap it as a
COM object to store in the ASP Session object.

The output and error is: 

246 -1- 492 
Python ActiveX Scripting Engine error '80020009' 

Traceback (most recent call last): File "<Script Block >", line 13, in
? objWibble = unwrap(wrapWibble) File
"C:\Python22\lib\site-packages\win32com\server\util.py", line 36, in
unwrap ob = pythoncom.UnwrapObject(ob) ValueError: argument is not a
COM object 

?, line 0 

ob = pythoncom.UnwrapObject(ob)

So in summary: what goes into the Session object doesn't seem to come
out again.

Any and all help gratefully received.

Further info: Python 2.2.2 with Win32all 150 (or 148) on Win2K

---- COMHarness.asp ----
<% @Language=Python %>
<%
import COMHarness2
from win32com.server.util import wrap, unwrap
objWibble = COMHarness2.COMWibble() # Get Object

Response.Write(objWibble.Wibble()) # Test object works
Response.Flush()       # Flush output

wrapWibble = wrap(objWibble) # wrap object in COM wrapper
objWibble = unwrap(wrapWibble) # unwrap again

Response.Write(" -1- ") # id. output
Response.Write(objWibble.Wibble()) # test unwrapped object
Response.Flush()

Session.SetValue("Wibble", wrapWibble) # store wrapped object in
Session object

wrapWibble = Session("Wibble") # retrieve from session object
objWibble = unwrap(wrapWibble) # unwrap retrieved object

Response.Write(" -2- ")	# id. output
Response.Write(objWibble.Wibble()) # test unwrapped object.
Response.Flush()
%>
----------END-----------

---- COMHarness2.py ----
class COMWibble:
    _public_methods_ = ['Wibble']
    _public_attrs_ = ['Wobble']
    _reg_progid_ = 'Wibble.Test.1'
    _reg_clsid_ = '{E871E6D2-BCBF-45E3-AF4A-791A7E153070}'

    def __init__(self):
        self.Wobble = 123

    def Wibble(self):
        self.Wobble *= 2
        return self.Wobble

    def Wobble(self):
        return self.Wobble

    _value_ = Wobble

if __name__ == '__main__':
    print "Registering COM server..."
    import win32com.server.register as reg
    reg.UseCommandLine(COMWibble)
----------END-----------

--
Dale Strickland-Clark
Riverhall Systems Ltd