# Package org.fourthline.cling.protocol.sync

- Class Summary
  Class | Description
  --- | ---
  ReceivingAction | Handles reception of control messages, invoking actions on local services.
  ReceivingEvent | Handles incoming GENA event messages.
  ReceivingRetrieval | Handles reception of device/service descriptor and icon retrieval messages.
  ReceivingSubscribe | Handles reception of GENA event subscription (initial and renewal) messages.
  ReceivingUnsubscribe | Handles reception of GENA event unsubscribe messages.
  SendingAction | Sending control message, transforming a local `ActionInvocation`.
  SendingEvent | Sending GENA event messages to remote subscribers.
  SendingRenewal | Renewing a GENA event subscription with a remote host.
  SendingSubscribe | Establishing a GENA event subscription with a remote host.
  SendingUnsubscribe | Disconnecting a GENA event subscription with a remote host.

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