SP Logout, redirecting to the IDP

[Cantor, Scott]

>Is there any chance that the SP, when it does this redirect, could add 
>an attribute to the redirect url telling the IDP the entityID value of 
>the SP which is doing the redirect to the Logout endpoint ?

No, because I'm not going to duplicate what SAML already supports. You're 
not obligated to implement single logout fully in the IdP, but if you want 
to do logout, that's the way you're meant to pass the message.

-- Scott