The incorporation of ASP.NET with Cors cookies enhances security and functionality

Currently, I am utilizing an MVC server with IIS express running on port x. My client code is executed using an express server on port y, and requests for data are sent to the server located at localhost:x.

An issue arises as the SessionId cookie is not consistently returned to the server on each request due to CORS limitations. I have learned that the cookie will not be transmitted to a different domain unless it is set to SameSite->none. However, in order to achieve this status, the cookie must also be marked as Secure, as advised by this resource: 

https://web.dev/samesite-cookies-explained/

If I intend to work with HTTP and require the client to forward cookies to the server, are there any viable alternatives available?

javascriptc#expresscookies

Answer №1

There are a couple of ways to address this issue:

  1. To ensure cookies are sent automatically for every request, you can configure the cookie as secure and set SameSite to None.
  2. Alternatively, you can manually instruct the browser to send cookies with each request using: Ajax method Fetch API method

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