This interface defines event constants that are used for notifications of state changes of connections represented
by SCP81Connection:
connection established (corresponds to successful open())
connection setup failed (corresponds to unsuccessful open())
connection closed (corresponds to successful close())
communication error (corresponds to unexpected communication breakdown)
server switch to other application (corresponds to server selecting another application via Content-Type header field)
The object implementing SCP81ConnectionStatus interface is a Temporary Entry Point Object.