3.1.4.4 Mode Record
If the record type the participant read from the protocol stream is not Mode Record, it MUST be handled as described in section 3.1.4.2.
The participant MUST read the next octet, which contains the mode.
If the mode is incorrect for the session, a Fault Record MAY<10> be sent to indicate that an incorrect mode has been specified, and the session MUST be closed.