[Twisted-web] Strange Nevow / Athena error

[Niklas Landsberg]

I´ve observed the same error when playing around with twisted behind a
reverse proxy (apache/nginx).  Are your conditions similar?

On Tue, Jul 7, 2009 at 8:58 PM, Paul Reznicek <maillists at ivsn.com> wrote:

> Hello,
> I observe this error few times a day and have no idea about what is causing
> it, neither under which conditions it happen (Nevow-0.9.33):
>
> Traceback (most recent call last):
>   File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line
> 195, in addCallback
>     callbackKeywords=kw)
>   File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line
> 186, in
> addCallbacks
>     self._runCallbacks()
>   File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line
> 328, in
> _runCallbacks
>     self.result = callback(self.result, *args, **kw)
>   File "/usr/local/lib/python2.6/dist-packages/nevow/appserver.py", line
> 163, in
> gotPageContext
>     pageContext.tag.renderHTTP, pageContext
> --- <exception caught here> ---
>   File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line
> 106, in
> maybeDeferred
>     result = f(*args, **kw)
>   File "/usr/local/lib/python2.6/dist-packages/nevow/athena.py", line 440,
> in renderHTTP
>     messageData = json.parse(requestContent)
>   File "/usr/local/lib/python2.6/dist-packages/nevow/json.py", line 228, in
> parse
>     value, tokens = parseValue(tokens)
>   File "/usr/local/lib/python2.6/dist-packages/nevow/json.py", line 130, in
> parseValue
>     if tokens[0] == '{':
> exceptions.IndexError: list index out of range
>
> I asked some user, but nobody observed problems on the user site,
> any idea, what is wrong?
>
> Regards, Paul
>
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