Gracefully closes SSL session.
This method causes
TElSimpleSSLClient to gracefully close SSL session.
Call this method after application has finished using the connection and is about to close it.
If SSL is not enabled (Enabled property is set to false) and UseInternalSocket is true, TElSimpleSSLClient closes connection and returns. If UseInternalSocket is false, the method does nothing.
If Silent parameter is set to False, TElSimpleSSLClient sends closing TLS notification to server.
Set this parameter to True to prevent sending of notification packet. In this case the session can't be resumed later.
Default value is False.