code: def _meta_name(self, name):
          
          name = name.upper().replace('-', '_')
          if name not in self.UNPREFIXED_HEADERS:
              name = 'HTTP_' + name
          return name
docs: Translate HTTP header names to the format used by Django request objects.
  
          See https://docs.djangoproject.com/en/1.4/ref/request-response/#django.http.HttpRequest.META