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https://issues.apache.org/jira/browse/MODPYTHON-180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Graham Dumpleton closed MODPYTHON-180.
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> publisher wrongly generating warning that there is 'nothing to publish'
> -----------------------------------------------------------------------
>
> Key: MODPYTHON-180
> URL: https://issues.apache.org/jira/browse/MODPYTHON-180
> Project: mod_python
> Issue Type: Bug
> Components: publisher
> Affects Versions: 3.3
> Reporter: Graham Dumpleton
> Assigned To: Graham Dumpleton
> Fix For: 3.3
>
>
> Publisher handler contains the code:
> # we log a message if nothing was published, it helps with debugging
> if (not published) and (req.bytes_sent==0) and (req.next is None):
> log=int(req.get_config().get("PythonDebug", 0))
> if log:
> req.log_error("mod_python.publisher: nothing to publish.")
> The idea is that if the publisher didn't generate any output and simply
> returned None, that a warning would be generated which might be noticed by a
> developer and thus be helpful to debugging problems.
> Problem is that "req.bytes_sent" is only actually non zero when data is
> flushed and actually written back to the client by Apache. It does not take
> into consideration any buffered data.
> In other words, if "req.write()" is used but second optional argument is
> always being set to 0 indicating that data should not be flushed, then
> publisher will wrongly say nothing actually got published.
> Because the PSP classes are no longer flushing data so that output filters
> like "CONTENT_LENGTH" will work, this will mean you will get this warning all
> the time when using code like:
> from mod_python import apache, psp
> def index(req):
> page = psp.PSP(req, 'echo.psp')
> page.run()
> Question is, is there a way to determine from Apache that there is buffered
> data. We don't really want to be adding another special flag in the
> mod_python request wrapper like req._content_type_set do we???
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