A client moniker is a string which can be used to uniquely
identify a specific client session aside from its socket handle. A
moniker can be assigned to the client session by setting the
ClientName property from within a class event handler such as
the OnConnect event.
Monikers are not case-sensitive, and they must be unique so that
no client socket for a particular server can have the same moniker.
The maximum length for a moniker is 127 characters.
This property only returns a meaningful value when accessed from
within an event handler, or a function that has been called from
within an event handler.