The version of the RMI Connector Protocol understood by this
 connector server.  This is a string with the following format:
 
 protocol-version implementation-name
 
 The protocol-version is a series of
 two or more non-negative integers separated by periods
 (.).  An implementation of the version described
 by this documentation must use the string 1.0
 here.
 After the protocol version there must be a space, followed
 by the implementation name.  The format of the implementation
 name is unspecified.  It is recommended that it include an
 implementation version number.  An implementation can use an
 empty string as its implementation name, for example for
 security reasons.
        
        
Returns:
    a string with the format described here. 
Throws:
  - 
RemoteException - if there is a communication
 exception during the remote method call.