// Fig. 22.18: IBlackjackService.cs
// Blackjack game WCF web service interface.
using System.ServiceModel;

[ServiceContract( SessionMode = SessionMode.Required )]
public interface IBlackjackService
{
   // deals a card that has not been dealt
   [OperationContract]
   string DealCard();

   // creates and shuffle the deck
   [OperationContract]
   void Shuffle();

   // calculates value of a hand
   [OperationContract]
   int GetHandValue( string dealt );
} // end interface IBlackjackService

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