Hi all, we need urgent help in a matter.

We are trying to pass a COM object from the client to server and are

facing some problems in the same.

We've our client in C# as well as the Server in C# and we're using

remoting for client to server communication.

Out client first creates an object of type System.__ComObject and

then passes it to our server using remoting, the

scenario can be visualized as :-

Com Server

Component A Exposing Interface IA and IB

C# Client

Type comType = Type.GetTypeFromCLSID( CLSID_A )

object objDisp = Activator.CreateInstance( comType );

TcpChannel chnl = new TcpChannel( 8086 );

ChannelServices.RegisterChannel( chnl );

//Through Reflection now we call a method on this IA which returns

Dispatch of IB ( in C# we get this as System.__ComObject )

Now we're creating a CAO for our component CSA and call the method

which expects as parameter the System.__ComObject Created earlier

RemotingConfiguration.RegisterActivatedClientType( typeof( CSA ),

"tcp://8085" );

CSA objCSA = new CSA.CSA();

objCSA.getSomething( objDisp );

C# Assembly

Component CSA

protected object m_objSess;

CSA::getSomething( objDisp )

{

m_objSess = objDisp;

//Now using reflection we call a method of this

System.__ComObject passed as parameter

}

C# Server

BinaryServerFormatterSinkProvider prov = new

BinaryServerFormatterSinkProvider();

prov.TypeFilterLevel = TypeFilterLevel.Full;

IDictionary prop = new HashTable();

prop["port"] = 8085;

TcpChannel chnl = new TcpChannel( prop, null, prov );

ChannelServices.RegisterChannel( chnl );

RemotingConfiguration.RegisterActivatedServiceType( typeof( CSA ) );

System.Console.Readline();

Now on executing the code ,at line marked in red it throws an

exception telling that "System.Runtime.Remoting.RemotingException: This

remoting proxy has no channel sink which means either the server has

no registered server channels that are listening, or this application has

no suitable client channel to talk to the server."

To remove this we opened a bi-directional ( as shown in the code

with blue color ) channel but when we do this the call hangs ( does not come

out ) from the line marked in red ( while invoking the method using

reflection ).

Could you please throw some light on the missing snippets of code if

any and provide us some guideline as to how to proceed to make the calls

successful.

Thanks a lot for your time!