Hi,

My app normally works fine, but certain POST data is causing it to
blow up with a 500 (internal server error).  The log contains the
message in the stack trace below.  Trouble is, my app hasn't even got
started yet!  It happens right at the run_wsgi_app line.  My
webapp.RequestHandler has not received control yet, so what can I do?

The error mentions ascii, but I don't know why it assumes the POST
data was ascii.  It's probably UTF-8.  I say probably since the POST
data isn't directly in my control (it's from Facebook, since this is a
Facebook app).

Some thoughts:
1) Is there a bug in the run_wsgi_app code?  Seems to me that data
arriving from outside shouldn't be able to cause an internal server
error.
2) Could the POST data be malformed?  I don't know much about POST
data -- perhaps it's identified as ascii, in error?  I'd like to trap
it and examine it but I don't know how to do that without the help of
webapp.RequestHandler (the app dies before this gets invoked).

My code is the standard mainline code

def main():
        run_wsgi_app(application)

if __name__ == "__main__":
        main()


Here's the stack trace from my log.  Thanks for any help!


<type 'exceptions.UnicodeDecodeError'>: 'ascii' codec can't decode
byte 0xc3 in position 10988: ordinal not in range(128)
Traceback (most recent call last):
  File "/base/data/home/apps/(my directory)/index.py", line 216, in
<module>
    main()
  File "/base/data/home/apps/(my directory)/index.py", line 213, in
main
    run_wsgi_app(application)
  File "/base/python_lib/versions/1/google/appengine/ext/webapp/
util.py", line 76, in run_wsgi_app
    result = application(env, _start_response)
  File "/base/python_lib/versions/1/google/appengine/ext/webapp/
__init__.py", line 521, in __call__
    response.wsgi_write(start_response)
  File "/base/python_lib/versions/1/google/appengine/ext/webapp/
__init__.py", line 241, in wsgi_write
    body = self.out.getvalue()
  File "/base/python_dist/lib/python2.5/StringIO.py", line 270, in
getvalue
    self.buf += ''.join(self.buflist)
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