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description: All events that can be recieved from SDK service
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# Events

#### StateChanged

Will handle an event when the tunnel state was changed. Unified SDK use OperationalState enum instead of VpnConnectionState

#### ErrorOccurred

Will handle an event when a tunnel error occurs.

#### TrafficChanged

Will handle an event when a new traffic statistic.

#### ProcessExited

Will handle an event when the tunnel process exited (for instance openvpn.exe).

#### HydraProcessExiting

Will handle an event when hydra.exe is exiting.

#### HydraUnsafeBlockedResource

Will handle an event when hydra blocks a resource.

#### HydraFireshieldDomainBlocked

Will handle an event when hydra fireshield blocks a domain.

#### HydraSocketCreated

Will handle an event when hydra creates a socket.

#### HydraSocketClosed

Will handle an event when hydra closes a socket.

#### DomainQueried

Came when DNS monitor is enabled and domains queried.
