Flask RESTful cross-domain issue with Angular: PUT, OPTIONS methods

Question

I\'ve developed a small write-only REST api with Flask Restful that accepts PUT request from a handful of clients that can potentially have changing IP addresses. My clients

Answer 1

I was facing the multiple types of CORS issue while connecting to my flask rest api from angular and tried almost all the approaches.
If you want to give access to all the websites without any restriction you can add below code in you app.py script :

from flask_cors import CORS , cross_origin

cors = CORS(app, resources={r"/*": {"origins": "*"}})

this will work, but its recommended to have some security which you can always edit in origin