After a successful WS-Federation operation (single sign-on, single logout, or federation termination), a page is displayed. This page, generally the originally requested resource, is specified in the initiating request using the RelayState element. If a RelayState is not specified, the value of this defaultRelayState property is displayed.
When RelayState or defaultRelayState contains special characters (such as &), it must be URL-encoded. For example, if the value of RelayState is http://www.sun.com/apps/myapp.jsp?param1=abc¶m2=xyz, it must be URL-encoded as:
http%3A%2F%2Fwww.sun.com%2Fapps%2Fmyapp.jsp%3Fparam1%3Dabc%26param2%3Dxyz
and then appended to the URL. For example, the service provider initiated single sign-on URL would be:
http://host:port/deploy-uri/saml2/jsp/spSSOInit.jsp?metaAlias=/sp&idpEntityID=http://www.idp.com&RelayState=http%3A%2F%2Fwww.sun.com%2Fapps%2Fmyapp.jsp%3Fparam1%3Dabc%26param2%3Dxyz