PassThrough is a Boolean property that indicates if the
socket-based IO handler should enable or disable its encryption capabilities during Send and Recv operations. PassThrough allows
TIdIOHandlerEncryptedSocket to revert to the behavior inherited from the
TIdIOHandlerSocket ancestor for Send and Recv method calls. Changing the value of PassThrough to False will cause a Connected
socket handle to perform the initalization and processing required to open the encoded connection.