Preserve http headers from Django using NGINX and Gunicorn

Hi,

I posted a question on server fault on how to preserve the headers I set in the Django backend.
It seems as nginx "removes" the headers I have set in a Django middleware.

I described my problem in detail here:

http://serverfault.com/questions/508524/preserve-http-headers-from-django-using-nginx-and-gunicorn


Hope to get some help here. Thanks in advance!
Thomas