1.5 Prerequisites/Preconditions

The protocol assumes that a transport session has been established. The management of the transport session (that is, how and when it is established, management of idle sessions, and closure of the transport session) is not a responsibility of the protocol. The protocol only uses the transport session to send and receive octets.

For the Singleton Sized mode, which is described in section 1.3.2, the size of the message is not contained as part of the message frame. The protocol assumes that the underlying transport has a means to compute the size and relay it to the protocol.