Observe VPN Related Events

Provides a simple way to watch any events required by your applications integrating with VPN SDK.

The VPN SDK provides an observer interface that can be implemented in order to handle any events that occur from the client.

iOS

The supported events that can be implemented are:

Status/Configuration Events

Property	Description
serverWillChange	The server defined in the client's configuration is about to change.
serverDidChange	The server defined in the client's configuration did change.
protocolWillChange	The protocol defined in the client's configuration is about to change.
protocolDidChange	The protocol defined in the client's configuration did change.

Connection Events

Property	Description
connectionWillBegin	The connection to the VPN server is about to start connecting.
connectionDidBegin	The connection to the VPN server did start connecting.
connectionWillReconnect	The connection to the VPN server is about to attempt to reconnect
connectionSucceeded	The connection to the VPN server was successful.
connectionFailed	The connection to the VPN server failed with error.
connectionWillDisconnect	The connection to the VPN server is about to disconnect.
connectionDidDisconnect	The connection to the VPN server did disconnect.

Miscellaneous Events

profileFailedToInstall	The iOS VPN profile failed to install and returned with error. Called on connect(withConfiguration:completion:) if the VPN pop-up fails or is denied.

Android

To subscribe to observing connection state events, use the subscribeToConnectionState method. An identifier of the subscription and an instance of a class that implements the ConnectionStateSubscriber interface must be passed in. This class will be notified of changes to the connection state when the connection traverses between DISCONNECTED, CONNECTING, CONNECTED and ERROR states.

Setting Up A Subscription

To setup the subscription, call the subscribeToConnectionState method as so:

val subscriptionId = UUID.randomUUID().toString()
val subscriber = object : ConnectionStateSubscriber {
    override fun onStateChanged(newState: SudoVPNState) {
        when (newState) {
            SudoVPNState.CONNECTED -> {
                // Handle change in connection state
            }
            SudoVPNState.CONNECTING -> {
                // Handle change in connection state
            }
            SudoVPNState.DISCONNECTED -> {
                // Handle change in connection state
            }
            SudoVPNState.ERROR -> {
                // Handle change in connection state
            }
        }
    }
}
launch {
    try {
        sudoVPNClient.subscribeToConnectionState(
            subscriptionId,
            subscriber
        )
    } catch (e: SudoVPNException) {
        // Handle/notify the user of exception
    }
}

Cancelling A Subscription

To cancel a subscription, use the unsubscribeFromConnectionState or unsubscribeAll method. For example:

val subscriptionId = // From where the subscription was set up
launch {
    try {
        sudoVPNClient.unsubscribeFromConnectionState(subscriptionId)
        // or
        sudoVPNClient.unsubscribeAll()
    } catch (e: SudoVPNException) {
        // Handle/notify the user of exception
    }
}

This will ensure that the subscription is cancelled and system resources are freed.