Middleware class to simulate http errors.

middleware.py

from django.http import HttpResponse

IN_ERROR_MODE = False

class SimulatorMiddleware:
  """Modifies the HTTP response.
  """
  def process_request(self, request):
    if request.path.startswith('/http_simulate'):
      return None

    if IN_ERROR_MODE:
      response = HttpResponse()
      response.status_code = 408
      return response
    else:
      return None