On Thu, Jul 8, 2010 at 3:17 PM, DanEE <daniel.eg...@gmail.com> wrote: > Hello > > I posted this already in django-user. But because it is rather an > internal django/python problem I will repost it here > > I experienced a strange behaviour with my django application when I > wanted to deploy and test on my apache instance on my virtual server. > I could successfully deploy my application but when I wanted to access > any view the browser just took forever to load and it never showed the > view. Accessing any non existing view gave the correct debug error > view. > > After a long debugging session I could locate the problem to be in > django/middleware/csrf.py. The call which actually took a very long > time was the call to randrange(0, _MAX_CSRF_KEY). > > By playing around in a python session it seems that the call to the > system randrange with random.SystemRandom().randrange(0, > _MAX_CSRF_KEY) never stops (or doesn't seem to stop in less than 30 > minutes) whereas a call to the "normal" randrange with randrange(0, > _MAX_CSRF_KEY) happily returns the desired random number. > The problem seems to depend on the size of the argument. > random.SystemRandom().randrange happily returns the random values if > the arguments are significantly lower. (I just deleted some number > from the _MAX_CSRF_KEY and then it worked) > > I had to manully set the line "randrange = random.randrange" instead > of the if/else logic which checks for the system random generator to > make my app work on my virtual host. > > Now it seems that is not a django problem per se. But I am wondering > what I should to with this kind of error as I had to manually fiddle > around in the django-code to be able to successfully host my > application.
This is concerning, but I can't reproduce anything like it -- on every platform I have available for testing, randrange() returns almost instantaneously. If you call randrange from a normal python prompt, do you see the same sort of delays? What about if you call randrange() in a simple Django view? (i.e., start a new project with a simple view with no forms, and call randrange() in that view?). Do you get similar lockups if you run the CSRF tests in the Django test suite? If you can find the source of this problem, we will be only too happy to fix it -- but until we can narrow down the specific set of circumstances that causes the problem, there's not much we can do. Yours, Russ Magee %-) -- You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-develop...@googlegroups.com. To unsubscribe from this group, send email to django-developers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-developers?hl=en.
