VPN Status Checking

# isConnected

This method returns true if this client has an active VPN connection with a Secure Gateway.

# getState

This method triggers the retrieval of the current VPN state. After the client is connected to the VPN service via the ClientIfc::attach method, both the current state and any changes in state are automatically delivered to the client. In general, this method should not be needed.

VPNState is delivered via ClientIfc::StateCB method.