# Version migration

### SDK version migration

#### 3.\*.\* - 4.0.0

* changes in import

```
import com.anchorfree.*

//replaced by

import unified.vpn.sdk.
```

* Removed
  * BrokenRemoteProcessException
  * ServiceBindFailedException
  * NoNetwork
  * NoVpnTransportsException
  * HydraVpnTransportException.HYDRA\_CONNECTION\_LOST
  * HydraVpnTransportException.TRAFFIC\_EXCEED
  * HydraVpnTransportException.HYDRA\_CANNOT\_CONNECT
  * HydraVpnTransportException.HYDRA\_ERROR\_CONFIG
* Renamed
  * OpenVpnTransportException **-** CaketubeTransportException
  * UnifiedSDK#getVPN - UnifiedSDK#getVpn
  * NotificationConfig - SdkNotificationConfig
  * VPNState - VpnState
  * CaketubeTransport - OpenVpnTransport

#### 3.3.3 - 3.4.0

* No changes required

#### 3.3.2 - 3.3.3

* No changes required

#### 3.3.1 - 3.3.2

* No changes required

#### 3.3.0 - 3.3.1

* No changes required

#### 3.2.0 - 3.3.0

* No changes required

#### 3.1.2 - 3.2.0

* No changes required

#### 3.1.1 - 3.1.2

* No changes required

#### 3.1.0 - 3.1.1

* No changes required

#### 3.0.0 - 3.1.0

* No changes required

#### 2.4.1 - 3.0.0

* Use UnifiedSDK.getInstance(ClientInfo) to get SDK instance
* HydraSdk.countries - UnifiedSDK.getInstance().getBackend().countries
* HydraSdk.addTrafficListener - UnifiedSDK.addTrafficListener
* HydraSdk.addVpnListener - UnifiedSDK.addVpnStateListener
* HydraSdk.removeTrafficListener - UnifiedSDK.removeTrafficListener
* HydraSdk.removeVpnListener - UnifiedSDK.removeVpnStateListener
* HydraSdk.deletePurchase - UnifiedSDK.getInstance().getBackend().deletePurchase
* HydraSdk.getStartVpnTimestamp - UnifiedSDK.getInstance().getVPN().getStartTimestamp
* HydraSdk.getVpnState - UnifiedSDK.getVpnState
* HydraSdk.getConnectionStatus - UnifiedSDK.getConnectionStatus
* HydraSdk.remainingTraffic - UnifiedSDK.getInstance().getBackend().remainingTraffic
* HydraSdk.restartVpn - UnifiedSDK.getInstance().getVPN().restart
* DnsRule - TrafficRule
* HydraSdk.setLoggingLevel - UnifiedSDK.setLoggingLevel
* HydraSdk.isPausedForReconnection - removed. Use UnifiedSDK.getVpnState
* HydraSdk.collectDebugInfo - removed
* HydraSdk.purchase - UnifiedSDK.getInstance().getBackend().purchase
* HydraSdk.getDeviceId - UnifiedSDK.getInstance().getInfo
* HydraSdk.currentUser - UnifiedSDK.getInstance().getBackend().currentUser
* HydraSdk.getSessionInfo - UnifiedSDK.getStatus
* HydraSdk.getAccessToken - UnifiedSDK.getInstance().getBackend().getAccessToken
* HydraSdk.requestVpnPermission - VpnPermissions.request
* HydraSdk.getConnectionAttemptId - removed, use UnifiedSDK.getStatus
* HydraSdk.getLoggingLevel - removed
* HydraSdk.isABISupported - removed
* HydraSdk.addVpnCallListener - UnifiedSDK.addVpnCallListener
* HydraSdk.removeVpnCallListener - UnifiedSDK.removeVpnCallListener
* HydraSdk.updateConfig - UnifiedSDK.getInstance().getVPN().updateConfig

#### 2.4.0 - 2.4.1

* no changes required

#### 2.3.1 - 2.4.0

* no changes required

#### 2.3.0 - 2.3.1

* no changes required

#### 2.2.4 - 2.3.0

* no changes required

#### 1.0.1 - 2.2.4

* removed HydraSdk.current(Callback): use HydraSdk.currentUser instead
* removed HydraSdk.getTrafficStats(): use HydraSdk.addTrafficListener instead
* removed HydraSdk.getVpnState(): use HydraSdk.getVpnState(Callback) instead
* removed HydraSdk.isLoggingEnabled: use HydraSdk.getLoggingLevel
* removed HydraSdk.getStartVpnTimestamp(): use HydraSdk.getStartVpnTimestamp(Callback)
* removed HydraSdk.isVpnStarted: use HydraSdk.getVpnState(Callback) and check if its VPNState.CONNECTED
* removed HydraSdk.startVPN(String, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.startVPN(String,String, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.startVPNExceptApps(String,List, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.startVPNExceptApps(String,List,String, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.startVPNForApps(String,List, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.startVPNForApps(String,List,String, Callback) use HydraSdk.startVPN(SessionConfig, Callback())
* removed HydraSdk.collectDebugInfo(Context, new Callback()) use HydraSdk.collectDebugInfo(new Callback()) instead
* **VpnStateListener** method **vpnError** parameter changed from **VPNException** to **HydraException**
* NotificationConfig.Builder#enableConnectionLost was removed. No action required.
* HydraSDKConfigBuilder#addBlacklistDomain removed. Use SessionConfig.Builder#addDnsRule instead
* HydraSDKConfigBuilder#addBlacklistDomains removed. Use SessionConfig.Builder#addDnsRule instead
* HydraSDKConfigBuilder#addBypassDomain removed. Use SessionConfig.Builder#addDnsRule instead
* HydraSDKConfigBuilder#addBypassDomains removed. Use SessionConfig.Builder#addDnsRule instead
* HydraSdk.restartVpn(String, String, AppPolicy, Bundle, Callback) removed use HydraSdk.restartVpn(SessionConfig, Callback) instead
* HydraSdk.isPausedForReconnection() removed use HydraSdk.isPausedForReconnection(Callback) instead
* HydraSdk.logout() removed, use HydraSdk.logout(CompletableCallback) instead


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