Fired when a Telnet SubOption command comes from the Telnet server.
type TSubOptionEvent = procedure ( Sender: TObject; SubOption: String; SubOptionB: TBytes ) of Object;
property OnSubOption: TSubOptionEvent read FOnSubOption write FOnSubOption;
The SubOption parameter contains the suboption data as sent by the other end. The enclosing suboption command codes are stripped away.
For a list of valid Telnet suboptions and their descriptions please look at the Telnet RFCs.