idpSingleLogoutRedirect.jsp processes the LogoutRequest and the LogoutResponse received from the service provider using HTTP-Redirect. The endpoint for this JSP is protocol://host:port/service-deploy-uri/IDPSloRedirect. It takes the following required parameters:
SAMLRequest: The LogoutRequest from the service provider.
SAMLResponse: The LogoutResponse from the service provider.
Optionally, it can also take the RelayState parameter which specifies the target URL of the request.