Angular 7 app getting CORS error from angular client

Question

I have developed an angular 7 app with express backend. Express running on localhost:3000 and angular client is running on localhost:4200.

In the

Answer 1

I changed the callback mechanism to get past the CORS issue, I am utilizing a OAuth flow for the user to get authenticated from https://example.com which was redirecting to https://example.com/auth/callback, I was initiating the request from http://localhost:4200 and then sending the callback url to the server http://localhost:3000 and I was getting the CORS error.

Now, I am redirecting it to the client http://localhost:4200 and got past the CORS problem. All other calls for GET, POST, DELETE, PATCH is from the http://localhost:3000 which is working fine.

Thank you all for your inputs.