Hi Paul On Sep 25, 2007, at 7:04 PM, Paul Perez wrote:

Dear List:

I am having a heck of a time trying to figure out why this traceback is happening, and I was hoping that you could shed some light on the situation. I am sorry for bothering you with this simple thing, but I can't seem to figure it out!

No need to apologize, however twisted-web is a better list for this question. <snip>

---------------------------------------------------------------------- ------------------------------- 2007-09-25 18:38:38-0700 [-] Original exception: 2007-09-25 18:38:38-0700 [-] Unhandled Error Traceback (most recent call last): File "C:\Projects\PyServer\twisted\internet\defer.py", line 304, in _startRunCallbacks

File "C:\Projects\PyServer\twisted\internet\defer.py", line 317, in _runCallbacks

File "C:\Projects\PyServer\twisted\internet\defer.py", line 281, in _continue

File "C:\Projects\PyServer\twisted\internet\defer.py", line 277, in unpause

--- <exception caught here> --- File "C:\Projects\PyServer\twisted\internet\defer.py", line 317, in _runCallbacks

File "C:\Projects\PyServer\twisted\web2\server.py", line 518, in _cbFinishRender

exceptions.TypeError: html is not a resource or a response

this exception usually indicates that a render method didn't return an IResponse object but instead returned a string (or none.) The above code did not include anything that implemented IResource.

2007-09-25 18:38:39-0700 [-] Unhandled error in Deferred: 2007-09-25 18:38:39-0700 [-] Unhandled Error Traceback (most recent call last): File "C:\Projects\PyServer\twisted\internet\defer.py", line 317, in _runCallbacks

File "C:\Projects\PyServer\twisted\web2\server.py", line 476, in _processingFailed

File "C:\Projects\PyServer\twisted\internet\defer.py", line 200, in addErrback

File "C:\Projects\PyServer\twisted\internet\defer.py", line 182, in addCallbacks

--- <exception caught here> --- File "C:\Projects\PyServer\twisted\internet\defer.py", line 317, in _runCallbacks

File "C:\Projects\PyServer\twisted\web2\server.py", line 492, in _processingReallyFailed

File "C:\Python24\lib\site-packages\twisted\web2 \http.py", line 446, in writeResponse self.chanRequest.writeHeaders(response.code, response.headers) File "C:\Projects\PyServer\twisted\web2\channel\http.py", line 431, in writeHeaders

File "C:\Projects\PyServer\twisted\web2\channel\http.py", line 466, in _writeHeaders

exceptions.AttributeError: 'HTTPChannelRequest' object has no attribute 'transport'

This might have something to do with the fact that you're calling writeResponse. You should never call writeResponse directly on a request object. You should _return_ an IResponse or a deferred which results in an IResponse from an IResource's render method.