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ChannelServices.SyncDispatchMessage Method

Synchronously dispatches the incoming message to the server-side chain(s) based on the URI embedded in the message.

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

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.Infrastructure)]
public static IMessage SyncDispatchMessage(
	IMessage msg
)

Parameters

msg
Type: System.Runtime.Remoting.Messaging.IMessage

The message to dispatch.

Return Value

Type: System.Runtime.Remoting.Messaging.IMessage
A reply message is returned by the call to the server-side chain.

ExceptionCondition
ArgumentNullException

The msg parameter is null.

SecurityException

The immediate caller does not have infrastructure permission.

// Create a custom 'RealProxy'. 
public class MyProxy : RealProxy
{
   String myURIString;
   MarshalByRefObject myMarshalByRefObject;   

   [PermissionSet(SecurityAction.LinkDemand)]
   public MyProxy(Type myType) : base(myType)
   {
      // RealProxy uses the Type to generate a transparent proxy.
      myMarshalByRefObject = (MarshalByRefObject)Activator.CreateInstance((myType));
      // Get 'ObjRef', for transmission serialization between application domains.
      ObjRef myObjRef = RemotingServices.Marshal(myMarshalByRefObject);
      // Get the 'URI' property of 'ObjRef' and store it.
      myURIString = myObjRef.URI;
      Console.WriteLine("URI :{0}", myObjRef.URI);
   }

   [SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure)]
   public override IMessage Invoke(IMessage myIMessage)
   {
      Console.WriteLine("MyProxy.Invoke Start");
      Console.WriteLine("");

      if (myIMessage is IMethodCallMessage)
         Console.WriteLine("IMethodCallMessage");

      if (myIMessage is IMethodReturnMessage)
         Console.WriteLine("IMethodReturnMessage");

      Type msgType = myIMessage.GetType();
      Console.WriteLine("Message Type: {0}", msgType.ToString());
      Console.WriteLine("Message Properties");
      IDictionary myIDictionary = myIMessage.Properties;
      // Set the '__Uri' property of 'IMessage' to 'URI' property of 'ObjRef'.
      myIDictionary["__Uri"] = myURIString;
      IDictionaryEnumerator myIDictionaryEnumerator = 
         (IDictionaryEnumerator) myIDictionary.GetEnumerator();

      while (myIDictionaryEnumerator.MoveNext())
      {
         Object myKey = myIDictionaryEnumerator.Key;
         String myKeyName = myKey.ToString();
         Object myValue = myIDictionaryEnumerator.Value;

         Console.WriteLine("\t{0} : {1}", myKeyName, 
            myIDictionaryEnumerator.Value);
         if (myKeyName == "__Args")
         {
            Object[] myObjectArray = (Object[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray.Length; aIndex++)
               Console.WriteLine("\t\targ: {0} myValue: {1}", aIndex, 
                  myObjectArray[aIndex]);
         }

         if ((myKeyName == "__MethodSignature") && (null != myValue))
         {
            Object[] myObjectArray = (Object[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray.Length; aIndex++)
               Console.WriteLine("\t\targ: {0} myValue: {1}", aIndex, 
                  myObjectArray[aIndex]);
         }
      }

      IMessage myReturnMessage;

      myIDictionary["__Uri"] = myURIString;
      Console.WriteLine("__Uri {0}", myIDictionary["__Uri"]);

      Console.WriteLine("ChannelServices.SyncDispatchMessage");
      myReturnMessage = ChannelServices.SyncDispatchMessage(myIMessage);

      // Push return value and OUT parameters back onto stack.

      IMethodReturnMessage myMethodReturnMessage = (IMethodReturnMessage)
         myReturnMessage;
      Console.WriteLine("IMethodReturnMessage.ReturnValue: {0}", 
         myMethodReturnMessage.ReturnValue);

      Console.WriteLine("MyProxy.Invoke - Finish");

      return myReturnMessage;
   }
}
// Create a custom 'RealProxy'.
public __gc class MyProxy : public RealProxy
{
   String* myURIString;
   MarshalByRefObject* myMarshalByRefObject;   

public:
   MyProxy(Type* myType) : RealProxy(myType)
   {
      // RealProxy uses the Type to generate a transparent proxy.
      myMarshalByRefObject = dynamic_cast<MarshalByRefObject*>(Activator::CreateInstance((myType)));
      // Get 'ObjRef', for transmission serialization between application domains.
      ObjRef* myObjRef = RemotingServices::Marshal(myMarshalByRefObject);
      // Get the 'URI' property of 'ObjRef' and store it.
      myURIString = myObjRef->URI;
      Console::WriteLine(S"URI :{0}", myObjRef->URI);
   }

   IMessage* Invoke(IMessage* myIMessage)
   {
      Console::WriteLine(S"MyProxy.Invoke Start");
      Console::WriteLine(S"");

      if (dynamic_cast<IMethodCallMessage*>(myIMessage))
         Console::WriteLine(S"IMethodCallMessage");

      if (dynamic_cast<IMethodReturnMessage*>(myIMessage))
         Console::WriteLine(S"IMethodReturnMessage");

      Type* msgType = myIMessage->GetType();
      Console::WriteLine(S"Message Type: {0}", msgType);
      Console::WriteLine(S"Message Properties");
      IDictionary* myIDictionary = myIMessage->Properties;
      // Set the '__Uri' property of 'IMessage' to 'URI' property of 'ObjRef'.
      myIDictionary->Item[S"__Uri"] = myURIString;
      IDictionaryEnumerator* myIDictionaryEnumerator = 
         dynamic_cast<IDictionaryEnumerator*> (myIDictionary->GetEnumerator());

      while (myIDictionaryEnumerator->MoveNext())
      {
         Object* myKey = myIDictionaryEnumerator->Key;
         String* myKeyName = myKey->ToString();
         Object* myValue = myIDictionaryEnumerator->Value;

         Console::WriteLine(S"\t{0} : {1}", myKeyName, 
            myIDictionaryEnumerator->Value);
         if (myKeyName->Equals(S"__Args"))
         {
            Object* myObjectArray[] = (Object*[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray->Length; aIndex++)
               Console::WriteLine(S"\t\targ: {0} myValue: {1}", __box(aIndex), 
                  myObjectArray[aIndex]);
         }

         if ((myKeyName->Equals(S"__MethodSignature")) && (0 != myValue))
         {
            Object* myObjectArray[] = (Object*[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray->Length; aIndex++)
               Console::WriteLine(S"\t\targ: {0} myValue: {1}", __box(aIndex), 
                  myObjectArray[aIndex]);
         }
      }

      IMessage* myReturnMessage;

      myIDictionary->Item[S"__Uri"] = myURIString;
      Console::WriteLine(S"__Uri {0}", myIDictionary->Item[S"__Uri"]);

      Console::WriteLine(S"ChannelServices.SyncDispatchMessage");
      myReturnMessage = ChannelServices::SyncDispatchMessage(myIMessage);

      // Push return value and OUT parameters back onto stack.

      IMethodReturnMessage* myMethodReturnMessage = dynamic_cast<IMethodReturnMessage*>(myReturnMessage);
      Console::WriteLine(S"IMethodReturnMessage.ReturnValue: {0}", 
         myMethodReturnMessage->ReturnValue);

      Console::WriteLine(S"MyProxy.Invoke - Finish");

      return myReturnMessage;
   }
};

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

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