This property is not supported for SSL/TLS sockets. It can only be used if the SecureProtocol is set to None. Asynchronous behavior in SSL or TLS mode can be achieved by calling the asynchronous methods. Set microSeconds parameter to a negative integer if you would like to wait indefinitely for a response.
The mode parameter is not one of the SelectMode values -or- the socket is in SSL or TLS mode. An operating system error occurs while accessing the VirtualSocket. The VirtualSocket has been closed.