最終的にクライアントでアクティブ化されたインスタンスを実行する方法を見つけましたが、それにはファイナライザーのマネージド コードが含まれます :( クラスを CrossAppDomain 通信用に特化しましたが、変更して他のリモート処理で試すことができます。バグが見つかったらお知らせください。
次の 2 つのクラスは、関連するすべてのアプリケーション ドメインに読み込まれたアセンブリに含まれている必要があります。
/// <summary>
/// Stores all relevant information required to generate a proxy in order to communicate with a remote object.
/// Disconnects the remote object (server) when finalized on local host (client).
/// </summary>
[Serializable]
[EditorBrowsable(EditorBrowsableState.Never)]
public sealed class CrossAppDomainObjRef : ObjRef
{
/// <summary>
/// Initializes a new instance of the CrossAppDomainObjRef class to
/// reference a specified CrossAppDomainObject of a specified System.Type.
/// </summary>
/// <param name="instance">The object that the new System.Runtime.Remoting.ObjRef instance will reference.</param>
/// <param name="requestedType"></param>
public CrossAppDomainObjRef(CrossAppDomainObject instance, Type requestedType)
: base(instance, requestedType)
{
//Proxy created locally (not remoted), the finalizer is meaningless.
GC.SuppressFinalize(this);
}
/// <summary>
/// Initializes a new instance of the System.Runtime.Remoting.ObjRef class from
/// serialized data.
/// </summary>
/// <param name="info">The object that holds the serialized object data.</param>
/// <param name="context">The contextual information about the source or destination of the exception.</param>
private CrossAppDomainObjRef(SerializationInfo info, StreamingContext context)
: base(info, context)
{
Debug.Assert(context.State == StreamingContextStates.CrossAppDomain);
Debug.Assert(IsFromThisProcess());
Debug.Assert(IsFromThisAppDomain() == false);
//Increment ref counter
CrossAppDomainObject remoteObject = (CrossAppDomainObject)GetRealObject(new StreamingContext(StreamingContextStates.CrossAppDomain));
remoteObject.AppDomainConnect();
}
/// <summary>
/// Disconnects the remote object.
/// </summary>
~CrossAppDomainObjRef()
{
Debug.Assert(IsFromThisProcess());
Debug.Assert(IsFromThisAppDomain() == false);
//Decrement ref counter
CrossAppDomainObject remoteObject = (CrossAppDomainObject)GetRealObject(new StreamingContext(StreamingContextStates.CrossAppDomain));
remoteObject.AppDomainDisconnect();
}
/// <summary>
/// Populates a specified System.Runtime.Serialization.SerializationInfo with
/// the data needed to serialize the current System.Runtime.Remoting.ObjRef instance.
/// </summary>
/// <param name="info">The System.Runtime.Serialization.SerializationInfo to populate with data.</param>
/// <param name="context">The contextual information about the source or destination of the serialization.</param>
public override void GetObjectData(SerializationInfo info, StreamingContext context)
{
Debug.Assert(context.State == StreamingContextStates.CrossAppDomain);
base.GetObjectData(info, context);
info.SetType(typeof(CrossAppDomainObjRef));
}
}
次に、CrossAppDomainObject であるリモート オブジェクトは、MarshalByRefObject ではなく、このクラスから継承する必要があります。
/// <summary>
/// Enables access to objects across application domain boundaries.
/// Contrary to MarshalByRefObject, the lifetime is managed by the client.
/// </summary>
public abstract class CrossAppDomainObject : MarshalByRefObject
{
/// <summary>
/// Count of remote references to this object.
/// </summary>
[NonSerialized]
private int refCount;
/// <summary>
/// Creates an object that contains all the relevant information required to
/// generate a proxy used to communicate with a remote object.
/// </summary>
/// <param name="requestedType">The System.Type of the object that the new System.Runtime.Remoting.ObjRef will reference.</param>
/// <returns>Information required to generate a proxy.</returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public sealed override ObjRef CreateObjRef(Type requestedType)
{
CrossAppDomainObjRef objRef = new CrossAppDomainObjRef(this, requestedType);
return objRef;
}
/// <summary>
/// Disables LifeTime service : object has an infinite life time until it's Disconnected.
/// </summary>
/// <returns>null.</returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public sealed override object InitializeLifetimeService()
{
return null;
}
/// <summary>
/// Connect a proxy to the object.
/// </summary>
[EditorBrowsable(EditorBrowsableState.Never)]
public void AppDomainConnect()
{
int value = Interlocked.Increment(ref refCount);
Debug.Assert(value > 0);
}
/// <summary>
/// Disconnects a proxy from the object.
/// When all proxy are disconnected, the object is disconnected from RemotingServices.
/// </summary>
[EditorBrowsable(EditorBrowsableState.Never)]
public void AppDomainDisconnect()
{
Debug.Assert(refCount > 0);
if (Interlocked.Decrement(ref refCount) == 0)
RemotingServices.Disconnect(this);
}
}