let process_destroyed_message tdsc req =
         log_output Debug "In Rcomm.From_transport.process_destroyed_message";
         let rdsc = TransHash.find thash tdsc in
         To_group_from_transport.send_to_group_from_trans 
            (To_group_from_transport.ToGrp.Destroyed(rdsc)) None
            (Some begin fun () -> receive_request [req] end)