If I recall correctly, when I wrote the code to read uploaded files, it was one chunk at a time (eg 4096 bytes). Wouldn't this give you the opportunity to stop at the right point?
take a look at github.com/appcove/AppStruct ... Python/AppStruct/WSGI/Lib.py (or related, maybe werkseug.py) to see the code. Take care. On Nov 24, 2011 1:48 PM, "Lisper" <ron.gar...@gmail.com> wrote: > I'm trying to implement a limit on the size of uploaded files which > depends on a user's status, i.e. a user who pays gets to upload larger > files than one who doesn't. I want to check the size of the upload BEFORE > reading the data because I don't want to read 27 gigabytes only to find > that this user is limited to 1MB. I can't user Apache's LimitRequestBody > directive. The filtering has to be done within the application because > it's the only part of the system that knows the user's status. > > I found this: > > http://mail.python.org/pipermail/web-sig/2008-November/003639.html > > which says: > > "If you use embedded mode, so long as your WSGI application doesn't > read the input and just returns the error response, the request > content wouldn't be read at all." > > So I tried this: > > def application(environ, start_response): > status = '200 OK' > headers = [('Content-type', 'text/html'),('Connection','close')] > out = start_response(status, headers) > out('--%s--<br>' % environ.get('CONTENT_LENGTH')) > return ['''<form method=post enctype="multipart/form-data"> > <input name=f type=file> > <input type=submit></form>'''] > > and ran it using: > > WSGIScriptAlias /wsgitest /path/to/driver.wsgi > <location /wsgitest> > WSGIApplicationGroup %{GLOBAL} > </Location> > > which as far as I can tell should result in running in embedded mode. > This seems like it *should* display the size of the uploaded file without > reading the file data. However, empirically, the data is being read. If I > upload a large file, there's a long delay before getting a response. > > So what am I doing wrong? > > Thanks, and Happy Thanksgiving! > > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/modwsgi/-/rEYG3K-zj74J. > To post to this group, send email to modwsgi@googlegroups.com. > To unsubscribe from this group, send email to > modwsgi+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/modwsgi?hl=en. > -- You received this message because you are subscribed to the Google Groups "modwsgi" group. To post to this group, send email to modwsgi@googlegroups.com. To unsubscribe from this group, send email to modwsgi+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/modwsgi?hl=en.
