------------------------------------------------------------------------------
--                                                                          --
--                           POLYORB COMPONENTS                             --
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--           P O L Y O R B . T R A N S P O R T . D A T A G R A M            --
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--         Copyright (C) 2003-2004 Free Software Foundation, Inc.           --
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--                PolyORB is maintained by ACT Europe.                      --
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------------------------------------------------------------------------------

--  Abstract datagram transport service access points and transport endpoints.

with PolyORB.Transport.Handlers;

package PolyORB.Transport.Datagram is

   use PolyORB.Asynch_Ev;

   ------------------
   -- Access Point --
   ------------------

   type Datagram_Transport_Access_Point is
     abstract new Transport_Access_Point with private;
   type Datagram_Transport_Access_Point_Access is
     access all Datagram_Transport_Access_Point'Class;

   ---------------
   -- End Point --
   ---------------

   type Datagram_Transport_Endpoint
     is abstract new Transport_Endpoint with private;

   type Datagram_Transport_Endpoint_Access is
     access all Datagram_Transport_Endpoint'Class;

   function Handle_Message
     (TE  : access Datagram_Transport_Endpoint;
      Msg : Components.Message'Class)
     return Components.Message'Class;

   function Create_Endpoint
     (TAP : access Datagram_Transport_Access_Point)
      return Datagram_Transport_Endpoint_Access;
   --  This function create an Endpoint on the same socket
   --  This allow to receive data to datagram socket

private

   ----------------------------------------------------
   -- Connectionless transport service access points --
   ----------------------------------------------------

   type Datagram_TAP_AES_Event_Handler is
     new Handlers.TAP_AES_Event_Handler with null record;

   procedure Handle_Event
     (H : access Datagram_TAP_AES_Event_Handler);

   type Datagram_Transport_Access_Point is
     abstract new Transport_Access_Point with record
        Handler : aliased Datagram_TAP_AES_Event_Handler;
     end record;

   ----------------------------------------
   -- Connectionless transport endpoints --
   ----------------------------------------

   subtype Datagram_TE_AES_Event_Handler is
     Handlers.TE_AES_Event_Handler;

   type Datagram_Transport_Endpoint is
      abstract new Transport_Endpoint with null record;
   --  Only datagram in endpoints have a Handler.

end PolyORB.Transport.Datagram;
