Cross-Domain Cookies

Question

I have two webapps WebApp1 and WebApp2 in two different domains.

1. I am setting a cookie in WebApp1 in the HttpResponse.
2. How to read the same cookie fro

Answer 1

I've created an NPM module, which allows you to share locally-stored data across domains: https://www.npmjs.com/package/cookie-toss

By using an iframe hosted on Domain A, you can store all of your user data on Domain A, and reference that data by posting requests to the Domain A iframe.

Thus, Domains B, C, etc. can inject the iframe and post requests to it to store and access the desired data. Domain A becomes the hub for all shared data.

With a domain whitelist inside of Domain A, you can ensure only your dependent sites can access the data on Domain A.

The trick is to have the code inside of the iframe on Domain A which is able to recognize which data is being requested. The README in the above NPM module goes more in depth into the procedure.

Hope this helps!