SAML: Communication Between Service Providers?
Oct 25, 2010
I've been tasked with writing a SP (Service Provider) for SAML v2.0 in ASP.NET, and I wonder the following;If a user logs in on the main SP for a service (where my SP becomes accessible for a user as an anchor/link, unless previously bookmarked), and then requests access to my SP, how should I handle their login?
They will have logged in and become authorized by the IdP on the main SP, but how will that SP tell my SP that the user is logged in? Will I have to send a new authorization request to the IdP to determine whether the user is logged in or should it be passed on as post data/redirect with a query string from the SP? I've read the technical overview as well as the basics, but they don't cover this part. I will contact the main SP and ask how to proceed, but I wanted to cover my bases first and see if there's a standard way on how to deal with this situation.
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