using System;
using System.Runtime.Remoting.Lifetime;
using System.Runtime.Remoting;

namespace Server
{
   class DefaultLifeTimeSingleton: MarshalByRefObject
   {

      public DefaultLifeTimeSingleton()
      {
         Console.WriteLine("DefaultLifeTimeSingleton.CTOR called");
      }

      public void doSomething()
      {
         Console.WriteLine("DefaultLifeTimeSingleton.doSomething called");
      }
   }

   class LongerLivingSingleton: MarshalByRefObject
   {

     public override object InitializeLifetimeService()
     {
        ILease tmp = (ILease) base.InitializeLifetimeService();
        if (tmp.CurrentState == LeaseState.Initial)
        {
           tmp.InitialLeaseTime = TimeSpan.FromSeconds(5);
           tmp.RenewOnCallTime = TimeSpan.FromSeconds(1);
        }
        return tmp;
     }

      public LongerLivingSingleton()
       {
         Console.WriteLine("LongerLivingSingleton.CTOR called");
      }
      public void doSomething()
      {
         Console.WriteLine("LongerLivingSingleton.doSomething called");
      }
   }

   class InfinitelyLivingSingleton: MarshalByRefObject
   {
     public override object InitializeLifetimeService()
     {
        return null;
     }
      public InfinitelyLivingSingleton()
      {
         Console.WriteLine("InfinitelyLivingSingleton.CTOR called");
      }

      public void doSomething()
      {
         Console.WriteLine("InfinitelyLivingSingleton.doSomething called");
      }
   }

   class ServerStartup
   {
      public static void Main(String[] args)
      {
         RemotingConfiguration.Configure("Server.exe.config");
         Console.WriteLine("Press <enter> to exit");
         Console.ReadLine();
      }
   }
}