[Knobot-devel] error handling

[<re...@gm...>]

david pointed out some problems with the error handling in KnoBot:

Situation:
- If an exception occurs before the body has been committed one get's an
errorpage, showing both the error message and the stack-trace
- If an exception occurs after the body has been committed a Jetty error
page for the error "response already committed" shows up
- If an exception in the transforming thread occurs, a white page is
returned

The first situation is what actually should happen, the template can be
changed not to display the stack-trace. The latest situation should
probably result n the exception being forwarded to the handler running
the thread, which would usually boil it down to the problematic
situation two: how to handle error when the response has already been
committed. The answer might be: do it as jetty does, not sure how though.=


Cheers,
reto