3.2.1.1.1 Aggregated Result

When the Query String Response Transfer Protocol is used, the result of a wsignin1.0 action is transmitted by a series of message exchanges. When an aggregated result is not available, it is considered to be empty (with size 0). The relying party concatenates each portion of the result to the aggregated result when it is received, so the aggregated result must be available to the relying party when processing each message exchange. The method used to maintain the availability of the aggregated result is implementation-specific. The relying party MUST discard the aggregated result when it receives a wsignoutcleanup1.0 message (as specified in [MS-MWBF] section 3.3.5.4.2).<17>