WSGI question: reading headers before message body has been read
ron.garret at gmail.com
Sun Jan 18 21:25:45 CET 2009
On Jan 18, 11:29 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Ron Garret schrieb:
> > I'm writing a WSGI application and I would like to check the content-
> > length header before reading the content to make sure that the content
> > is not too big in order to prevent denial-of-service attacks. So I do
> > something like this:
> > def application(environ, start_response):
> > status = "200 OK"
> > headers = [('Content-Type', 'text/html'), ]
> > start_response(status, headers)
> > if int(environ['CONTENT_LENGTH'])>1000: return 'File too big'
> > But this doesn't seem to work. If I upload a huge file it still waits
> > until the entire file has been uploaded before complaining that it's
> > too big.
> > Is it possible to read the HTTP headers in WSGI before the request
> > body has been read?
> AFAIK that is nothing that WSGI defines - it's an implementation-detail
> of your server. Which one do you use?
Apache at the moment, with lighttpd as a contender to replace it.
More information about the Python-list