ClientSponsor 类

定义

为生存期主办方类提供默认实现。Provides a default implementation for a lifetime sponsor class.

public ref class ClientSponsor : MarshalByRefObject, System::Runtime::Remoting::Lifetime::ISponsor
[System.Runtime.InteropServices.ComVisible(true)]
[System.Security.SecurityCritical]
public class ClientSponsor : MarshalByRefObject, System.Runtime.Remoting.Lifetime.ISponsor
type ClientSponsor = class
    inherit MarshalByRefObject
    interface ISponsor
Public Class ClientSponsor
Inherits MarshalByRefObject
Implements ISponsor
继承
ClientSponsor
属性
实现

示例

下面的示例演示了 ClientSponsor 类, 以扩展类激活的远程对象的生存期。The following example illustrates the ClientSponsor class to extend the life of a class-activated remote object.

#using <system.dll>
#using <system.runtime.remoting.dll>
#using <ClientSponsor_Share.dll>

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

int main()
{
   // Register a channel.
   TcpChannel^ myChannel = gcnew TcpChannel;
   ChannelServices::RegisterChannel( myChannel );
   RemotingConfiguration::RegisterActivatedClientType(
      RemotingSamples::HelloService::typeid, "tcp://localhost:8085/" );
   
   // Get the remote Object*.
   RemotingSamples::HelloService ^ myService = gcnew RemotingSamples::HelloService;
   
   // Get a sponsor for renewal of time.
   ClientSponsor^ mySponsor = gcnew ClientSponsor;
   
   // Register the service with sponsor.
   mySponsor->Register( myService );
   
   // Set renewaltime.
   mySponsor->RenewalTime = TimeSpan::FromMinutes( 2 );
   
   // Renew the lease.
   ILease^ myLease = dynamic_cast<ILease^>(mySponsor->InitializeLifetimeService());
   TimeSpan myTime = mySponsor->Renewal( myLease );
   Console::WriteLine( "Renewed time in minutes is {0}", myTime.Minutes );
   
   // Call the remote method.
   Console::WriteLine( myService->HelloMethod( "World" ) );
   
   // Unregister the channel.
   mySponsor->Unregister( myService );
   mySponsor->Close();
}
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Lifetime;
namespace RemotingSamples
{

   class HelloClient
   {
       static void Main()
      {
         // Register a channel.
         TcpChannel myChannel = new TcpChannel ();
         ChannelServices.RegisterChannel(myChannel);
         RemotingConfiguration.RegisterActivatedClientType(
                                typeof(HelloService),"tcp://localhost:8085/");

         // Get the remote object.
         HelloService myService = new HelloService();

         // Get a sponsor for renewal of time.
         ClientSponsor mySponsor = new ClientSponsor();

         // Register the service with sponsor.
         mySponsor.Register(myService);

         // Set renewaltime.
         mySponsor.RenewalTime = TimeSpan.FromMinutes(2);

         // Renew the lease.
         ILease myLease = (ILease)mySponsor.InitializeLifetimeService();
         TimeSpan myTime = mySponsor.Renewal(myLease);
         Console.WriteLine("Renewed time in minutes is " + myTime.Minutes.ToString());

         // Call the remote method.
         Console.WriteLine(myService.HelloMethod("World"));

         // Unregister the channel.
         mySponsor.Unregister(myService);
         mySponsor.Close();
      }
   }
}
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp
Imports System.Runtime.Remoting.Lifetime

Namespace RemotingSamples

   Class HelloClient

      Shared Sub Main()
         ' Register a channel.
         Dim myChannel As New TcpChannel()
         ChannelServices.RegisterChannel(myChannel)
         RemotingConfiguration.RegisterActivatedClientType( _
                     GetType(HelloService), "tcp://localhost:8085")

         ' Get the remote object.
         Dim myService As New HelloService()

         ' Get a sponsor for renewal of time.
         Dim mySponsor As New ClientSponsor()

         ' Register the service with sponsor.
         mySponsor.Register(myService)

         ' Set renewaltime.
         mySponsor.RenewalTime = TimeSpan.FromMinutes(2)

         ' Renew the lease.
         Dim myLease As ILease = CType(mySponsor.InitializeLifetimeService(), ILease)
         Dim myTime As TimeSpan = mySponsor.Renewal(myLease)
         Console.WriteLine("Renewed time in minutes is " & myTime.Minutes)

         ' Call the remote method.
         Console.WriteLine(myService.HelloMethod("World"))

         ' Unregister the channel.
         mySponsor.Unregister(myService)
         mySponsor.Close()
      End Sub
   End Class


End Namespace 'RemotingSamples

注解

当前生存期赞助实现可用于通过指定所需的续订TimeSpan来发起对象。The current lifetime sponsor implementation can be used to sponsor objects by specifying the required renewal TimeSpan.

备注

此类在类级别建立链接要求和继承要求。This class makes a link demand and an inheritance demand at the class level. 当直接调用方或派生类没有基础结构权限时,将引发。SecurityExceptionA SecurityException is thrown when either the immediate caller or the derived class does not have infrastructure permission. 有关安全要求的详细信息, 请参阅链接要求继承要求For details about security demands, see Link Demands and Inheritance Demands.

构造函数

ClientSponsor()

使用默认值初始化 ClientSponsor 类的新实例。Initializes a new instance of the ClientSponsor class with default values.

ClientSponsor(TimeSpan)

用被发起对象的续订时间来初始化 ClientSponsor 类的新实例。Initializes a new instance of the ClientSponsor class with the renewal time of the sponsored object.

属性

RenewalTime

获取或设置当请求续订时被发起对象的生存期所延长的 TimeSpanGets or sets the TimeSpan by which to increase the lifetime of the sponsored objects when renewal is requested.

方法

Close()

清空注册到当前 ClientSponsor 的列表对象。Empties the list objects registered with the current ClientSponsor.

CreateObjRef(Type)

创建一个对象,该对象包含生成用于与远程对象进行通信的代理所需的全部相关信息。Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(继承自 MarshalByRefObject)
Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
Finalize()

在垃圾回收器回收当前 ClientSponsor 的资源之前释放它们。Frees the resources of the current ClientSponsor before the garbage collector reclaims them.

GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetLifetimeService()

检索控制此实例的生存期策略的当前生存期服务对象。Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(继承自 MarshalByRefObject)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
InitializeLifetimeService()

初始化 ClientSponsor 的新实例,为当前对象提供租约。Initializes a new instance of ClientSponsor, providing a lease for the current object.

MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
MemberwiseClone(Boolean)

创建当前 MarshalByRefObject 对象的浅表副本。Creates a shallow copy of the current MarshalByRefObject object.

(继承自 MarshalByRefObject)
Register(MarshalByRefObject)

为主办关系注册指定的 MarshalByRefObjectRegisters the specified MarshalByRefObject for sponsorship.

Renewal(ILease)

请求发起客户端续订指定对象的租约。Requests a sponsoring client to renew the lease for the specified object.

ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)
Unregister(MarshalByRefObject)

从由当前 MarshalByRefObject 发起的对象列表中注销指定的 ClientSponsorUnregisters the specified MarshalByRefObject from the list of objects sponsored by the current ClientSponsor.

安全性

SecurityPermission
用于处理基础结构代码。for operating with infrastructure code. 要求值: InheritanceDemand;权限值:InfrastructureDemand value: InheritanceDemand; Permission Value: Infrastructure

适用于