django cross-domain request using iframe

settings.py

INSTALLED_APPS = [
    ...
    'corsheaders',
    ...
]

MIDDLEWARE = [
   ...
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    ...
]

X_FRAME_OPTIONS = 'ALLOWALL'
CORS_ORIGIN_ALLOW_ALL = True
CORS_ALLOW_CREDENTIALS = True
CORS_ALLOW_METHODS = ('DELETE', 'GET', 'OPTIONS', 'PATCH', 'POST', 'PUT', 'VIEW',)
CORS_ALLOW_HEADERS = (
    'XMLHttpRequest',
    'X_FILENAME',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
    'Pragma',
)