OperationContext.Current == null

Hello,

I am trying to implement a duplex service with named pipes. But when I want
to call methods on the client
OperationContext.Current is null and I cannot get a CallBackChannel.
What could cause this? Security on the named pipe is set to transport,
SessionMode is required, Operationcontracts are oneway.

Thanks
Ralf

AFAIK Duplex work only with WSDualHTTPBinding ( TCP, not pipes )
Arkady

"Ralf Ziller" <nospam@none.de> wrote in message
news:e73Ra$KDHHA.4024@TK2MSFTNGP04.phx.gbl...
> Hello,
>
> I am trying to implement a duplex service with named pipes. But when I
> want to call methods on the client
> OperationContext.Current is null and I cannot get a CallBackChannel.
> What could cause this? Security on the named pipe is set to transport,
> SessionMode is required, Operationcontracts are oneway.
>
> Thanks
> Ralf
>