Retrieve Cookie from a designated domain using Express

I am currently working on a React application that communicates with a Node/Express backend. To ensure the validity of requests, I am sending a cookie created by react-cookie from the React app to the Express app. To avoid issues related to naming conflicts or contamination from user's previous sessions or visits to other apps, I have specified the domain of the cookie using the following code snippet:

cookie.save("foo", "bar", {domain: 'localhost'})

Within the server-side code, I have implemented the cookie-parser middleware and within the specific route, I retrieve the cookie using req.cookies.foo. My question is, how can I access the domain property of the cookie to verify that it belongs to my domain?

Any help would be greatly appreciated!

javascriptnode.jsreactjsexpresscookies

Answer №1

My suggestion would be to opt for express-session over using a cookie:

https://github.com/expressjs/session

Note: Starting from version 1.5.0, the cookie-parser middleware is no longer required for the functionality of this module. It now directly handles reading and writing cookies on req/res. Using cookie-parser could lead to complications if the secret does not match between this module and cookie-parser."

If you still prefer to use the cookie, you can output req.cookies console.log(req.cookies)and examine the object details available so that you can determine how to access the specific cookie field you need.

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