ServiceHostFactory

ServiceHostFactory.cs

public class ServiceHostFactory : ServiceHostFactoryBase
{
  private static readonly ProxyGenerator Generator = new ProxyGenerator();

  public override ServiceHostBase CreateServiceHost(string constructorString, Uri[] baseAddresses)
  {
    return this.CreateServiceHost(Type.GetType(constructorString), baseAddresses);
  }

  protected virtual ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
  {
    ServiceHost host = new ServiceHost(this.CreateService(), baseAddresses);
    host.Description.Behaviors.Find<ServiceBehaviorAttribute>().InstanceContextMode = InstanceContextMode.Single;
    host.AddServiceEndpoint(typeof(IServicioWeb), new BasicHttpBinding(), string.Empty);
    return host;
  }

  private ServicioWeb CreateService()
  {
    return Generator.CreateClassProxy<ServicioWeb>(this.CreateLogInterceptor());
  }

  private IInterceptor CreateLogInterceptor()
  {
    return new ErrorLoggingInterceptor();
  }
}

ServicioWeb.svc

<%@ ServiceHost 
    Language="C#" 
    Debug="true" 
    CodeBehind="ServicioWeb.cs" 
    Factory="EjemploAOPCastleWCF.ServiceHostFactory" %>