3.3.5 Processing Events and Sequencing Rules

A web browser requestor plays a passive role in the operation of the protocol. Its only function is to transport protocol message requests and responses between a requestor IP/STS and one or more relying parties. It is not required to understand the types or content of these protocol messages. The web browser requestor SHOULD transport all protocol message requests and responses between a requestor IP/STS and a relying party without changing the messages at all.<23>