Tls query

Description
The Tls query returns information about the current state of TLS.

Return values
The Tls query returns one of four values:
 * (empty)
 * There is no active connection.


 * There is an active connection that is not using TLS.
 * There is an active connection that is not using TLS.


 * There is an active connection that is using TLS, but the host certificate has not been verified.
 * There is an active connection that is using TLS, but the host certificate has not been verified.


 * There is an active connection that is using TLS, and the host certificate has been verified.
 * There is an active connection that is using TLS, and the host certificate has been verified.