LifetimeServices Class

Controls the.NET remoting lifetime services.

Namespace:  System.Runtime.Remoting.Lifetime
Assembly:  mscorlib (in mscorlib.dll)

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.Infrastructure)]
public sealed class LifetimeServices

Distributed garbage collection is responsible for controlling the lifetimes of server applications, and for deleting them when their lifetimes have expired. Traditionally, distributed garbage collection uses reference counts and pinging for control. This works well when there are a few clients per object, but does not work well when there are thousands of clients per each object. The lifetime service can assume the function of a traditional distributed garbage collector, and scales well when the number of clients increases.

The lifetime service associates a lease with each remotely activated object. When the lease expires, the object is removed.


This class makes a link demand. A SecurityException is thrown if the immediate caller does not have infrastructure permission. See Link Demands for more information.

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Runtime.Remoting.Lifetime;
using System.Security.Permissions;

public class Server {

   public static void Main() {

      Server myServer = new Server();

[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.Infrastructure)]
   public void Run()
      LifetimeServices.LeaseTime = TimeSpan.FromSeconds(5);
      LifetimeServices.LeaseManagerPollTime = TimeSpan.FromSeconds(3);
      LifetimeServices.RenewOnCallTime = TimeSpan.FromSeconds(2);
      LifetimeServices.SponsorshipTimeout = TimeSpan.FromSeconds(1);

      ChannelServices.RegisterChannel(new HttpChannel(8080), true);

      Console.WriteLine("The server is listening. Press Enter to exit....");

#using <mscorlib.dll>
#using <system.dll>
#using <system.runtime.remoting.dll>
#using "service.dll"

using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Http;
using namespace System::Runtime::Remoting::Lifetime;

int main() 
	LifetimeServices::LeaseTime = TimeSpan::FromSeconds(5);
	LifetimeServices::LeaseManagerPollTime = TimeSpan::FromSeconds(3);
	LifetimeServices::RenewOnCallTime = TimeSpan::FromSeconds(2);
	LifetimeServices::SponsorshipTimeout = TimeSpan::FromSeconds(1);

	ChannelServices::RegisterChannel(new HttpChannel(8080));

	Console::WriteLine(S"The server is listening. Press Enter to exit....");


	return 0;


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0