リモート処理の例 : 追跡サービス
TrackingServices クラスは、プラグ可能な追跡ハンドラを使用した汎用の追跡サービスを行うために使用します。ITrackingHandler インターフェイスのメソッドは、以下の状況で呼び出されます。
詳細については、参照ドキュメントの「TrackingServices」および「ITrackingHandler」を参照してください。
注意 : |
---|
.NET Framework リモート処理では、既定では認証または暗号化を実行しません。したがって、クライアントやサーバーとリモートで通信する前に、ID の確認に必要な手順をすべて実行することをお勧めします。.NET Framework リモート処理アプリケーションの実行には、FullTrust アクセス許可が必要です。認証されていないクライアントがサーバー上でのアクセスを許可された場合は、完全な信頼を与えられているものとして、コードを実行できます。インターネット インフォメーション サービス (IIS: Internet Information Services) でリモート型を管理するか、リモート型を管理するためのカスタム チャネル シンク ペアを作成して、常にエンドポイントを認証し、通信ストリームを暗号化してください。 |
このサンプルをコンパイルして実行するには
すべてのファイルを 1 つのディレクトリ内にコピーします。
コマンド プロンプトで次のコマンドを入力します。
vbc /t:library /r:System.Runtime.Remoting.dll TrackingHandler.vb vbc /t:library /r:System.Runtime.Remoting.dll RemoteType.vb vbc /r:RemoteType.dll /r:System.Runtime.Remoting.dll /r:TrackingHandler.dll server.vb vbc /r:RemoteType.dll /r:System.Runtime.Remoting.dll client.vb
csc /t:library /r:System.Runtime.Remoting.dll TrackingHandler.cs
csc /t:library /r:System.Runtime.Remoting.dll RemoteType.cs
csc /r:RemoteType.dll /r:System.Runtime.Remoting.dll /r:TrackingHandler.dll server.cs
csc /r:RemoteType.dll /r:System.Runtime.Remoting.dll client.cs
このアプリケーションは、1 台のコンピュータ上、またはネットワーク経由で実行されます。このアプリケーションをネットワーク上で実行する場合は、クライアント構成の "localhost" をリモート コンピュータの名前に置き換える必要があります。
TrackingHandler
Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Services
Public Class TrackingHandler
Implements ITrackingHandler
' Notifies a handler that an object has been marshaled.
Public Sub MarshaledObject(ByVal obj As Object, ByVal objref As System.Runtime.Remoting.ObjRef) Implements System.Runtime.Remoting.Services.ITrackingHandler.MarshaledObject
Console.WriteLine("Tracking: An instance of {0} was marshaled. The instance HashCode is: {1}", _
obj.ToString(), obj.GetHashCode().ToString())
Console.WriteLine("ObjRef dump:")
If (objref.ChannelInfo IsNot Nothing) Then
Console.WriteLine(" -- ChannelInfo: ")
DumpChannelInfo(objref.ChannelInfo)
End If
If (objref.EnvoyInfo IsNot Nothing) Then
Console.WriteLine(" -- EnvoyInfo: " + CType(objref.EnvoyInfo, Object).ToString())
End If
If (objref.TypeInfo IsNot Nothing) Then
Console.WriteLine(" -- TypeInfo: " + CType(objref.TypeInfo, Object).ToString())
Console.WriteLine(" -- " + objref.TypeInfo.TypeName)
End If
If (objref.URI IsNot Nothing) Then
Console.WriteLine(" -- URI: " + objref.URI.ToString())
End If
End Sub
Private Sub DumpChannelInfo(ByVal info As IChannelInfo)
Dim obj As Object
For Each obj In info.ChannelData
If (obj Is GetType(ChannelDataStore)) Then
Dim uri As String
For Each uri In CType(obj, ChannelDataStore).ChannelUris
Console.WriteLine(" -- ChannelUris:" + uri)
Next
End If
Next
End Sub
' Notifies a handler that an object has been unmarshaled.
Public Sub UnmarshaledObject(ByVal obj As Object, ByVal [or] As System.Runtime.Remoting.ObjRef) Implements System.Runtime.Remoting.Services.ITrackingHandler.UnmarshaledObject
Console.WriteLine("Tracking: An instance of {0} was unmarshaled. The instance HashCode is: {1}", obj.ToString(), obj.GetHashCode().ToString())
End Sub
' Notifies a handler that an object has been disconnected.
Public Sub DisconnectedObject(ByVal obj As Object) Implements System.Runtime.Remoting.Services.ITrackingHandler.DisconnectedObject
Console.WriteLine("Tracking: An instance of {0} was disconnected. The instance HashCode is: {1}", obj.ToString(), obj.GetHashCode().ToString())
End Sub
End Class
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Services;
namespace TrackingHandler
{
public class TrackingHandler : ITrackingHandler
{
// Notifies a handler that an object has been marshaled.
public void MarshaledObject(Object obj, ObjRef objref)
{
Console.WriteLine("Tracking: An instance of {0} was marshaled. The instance HashCode is: {1}", obj.ToString(), obj.GetHashCode().ToString());
Console.WriteLine("ObjRef dump:");
if (objref.ChannelInfo != null)
{
Console.WriteLine(" -- ChannelInfo: ");
DumpChannelInfo(objref.ChannelInfo);
}
if (objref.EnvoyInfo != null)
Console.WriteLine(" -- EnvoyInfo: " + objref.EnvoyInfo.ToString());
if (objref.TypeInfo != null)
{
Console.WriteLine(" -- TypeInfo: " + objref.TypeInfo.ToString());
Console.WriteLine(" -- " + objref.TypeInfo.TypeName);
}
if (objref.URI != null)
Console.WriteLine(" -- URI: " + objref.URI.ToString());
}
private void DumpChannelInfo(IChannelInfo info)
{
foreach (object obj in info.ChannelData)
{
if (obj is ChannelDataStore)
{
foreach (string uri in ((ChannelDataStore)obj).ChannelUris)
Console.WriteLine(" -- ChannelUris:" + uri);
}
}
}
// Notifies a handler that an object has been unmarshaled.
public void UnmarshaledObject(Object obj, ObjRef or)
{
Console.WriteLine("Tracking: An instance of {0} was unmarshaled. The instance HashCode is: {1}", obj.ToString(), obj.GetHashCode().ToString());
}
// Notifies a handler that an object has been disconnected.
public void DisconnectedObject(Object obj)
{
Console.WriteLine("Tracking: An instance of {0} was disconnected. The instance HashCode is: {1}",
obj.ToString(), obj.GetHashCode().ToString());
}
}
}
RemoteType
Imports System
Public Class ServiceClass
Inherits MarshalByRefObject
Private starttime As DateTime
Public Sub New()
Console.WriteLine("A ServiceClass has been created.")
starttime = DateTime.Now
End Sub
Protected Overrides Sub Finalize()
Console.WriteLine("ServiceClass being collected after " & (New TimeSpan(DateTime.Now.Ticks - starttime.Ticks)).ToString() & " seconds.")
End Sub
Public Function GetServerTime() As DateTime
Console.WriteLine("Time requested by client")
Return DateTime.Now
End Function
End Class
using System;
namespace RemoteType
{
public class ServiceClass : MarshalByRefObject
{
private DateTime starttime;
public ServiceClass()
{
Console.WriteLine("A ServiceClass has been created.");
starttime = DateTime.Now;
}
~ServiceClass()
{
Console.WriteLine("ServiceClass being collected after " + (new TimeSpan(DateTime.Now.Ticks - starttime.Ticks)).ToString() + " seconds.");
}
public DateTime GetServerTime()
{
Console.WriteLine("Time requested by client.");
return DateTime.Now;
}
}
}
サーバー
[Visual Basic]
Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp
Imports System.Runtime.Remoting.Services
Imports TrackingHandler
Public Class Server
Public Shared Sub Main()
Dim channel As TcpChannel = New TcpChannel(8080)
ChannelServices.RegisterChannel(channel, False)
TrackingServices.RegisterTrackingHandler(New TrackingHandler())
Dim service As ServiceClass = New ServiceClass()
Dim obj As ObjRef = RemotingServices.Marshal(service, "TcpService")
Console.WriteLine("Press Enter to unmarshal the object.")
Console.ReadLine()
RemotingServices.Unmarshal(obj)
Console.WriteLine("Press Enter to disconnect the object.")
Console.ReadLine()
RemotingServices.Disconnect(service)
End Sub
End Class
[C#]
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Services;
using TrackingHandler;
using RemoteType;
namespace Server
{
public class Server
{
public static void Main(string[] Args)
{
TcpChannel channel = new TcpChannel(8080);
ChannelServices.RegisterChannel(channel, false);
TrackingServices.RegisterTrackingHandler(new TrackingHandler.TrackingHandler());
ServiceClass service = new ServiceClass();
ObjRef obj = RemotingServices.Marshal(service, "TcpService");
Console.WriteLine("\r\nPress Enter to unmarshal the object.");
Console.ReadLine();
RemotingServices.Unmarshal(obj);
Console.WriteLine("Press Enter to disconnect the object.");
Console.ReadLine();
RemotingServices.Disconnect(service);
}
}
}
クライアント
Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp
Public Class Client
Public Shared Sub Main()
ChannelServices.RegisterChannel(New TcpChannel(), False)
Dim remotetype As WellKnownClientTypeEntry = New WellKnownClientTypeEntry( _
GetType(ServiceClass), _
"tcp://localhost:8080/TcpService")
RemotingConfiguration.RegisterWellKnownClientType(remotetype)
Dim service As ServiceClass = New ServiceClass()
Console.WriteLine("Server time is: " & service.GetServerTime().ToLongTimeString())
End Sub
End Class
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using RemoteType;
namespace Client
{
public class ClientProcess
{
public static void Main(string[] Args)
{
ChannelServices.RegisterChannel(new TcpChannel(), false);
WellKnownClientTypeEntry remotetype = new WellKnownClientTypeEntry(
typeof(ServiceClass),
"tcp://localhost:8080/TcpService");
RemotingConfiguration.RegisterWellKnownClientType(remotetype);
ServiceClass service = new ServiceClass();
Console.WriteLine("Server time is: " + service.GetServerTime().ToLongTimeString());
}
}
}
関連項目
参照
ITrackingHandler
TrackingServices
その他の技術情報
Copyright © 2007 by Microsoft Corporation.All rights reserved.