3.2.1.7 License
The license is an X.509 certificate chain that contains a certificate issued by the license server to the client. The leaf X.509 certificate in the certificate chain has the following information:
Version: The version of the terminal server that this client is allowed to access.
Type: Whether the license is temporary or permanent.
Validity Period: The period of validity of this license.
The server MUST send the license to the client in the Server New License message or the Server Upgrade License message.