------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2012-2013, AdaCore                     --
--                                                                          --
--  This library is free software;  you can redistribute it and/or modify   --
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--  <http://www.gnu.org/licenses/>.                                         --
--                                                                          --
--  As a special exception, if other files instantiate generics from this   --
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--  covered by the  GNU Public License.                                     --
------------------------------------------------------------------------------

--  This implements the WebSocket protocol as defined in Draft-76
--  http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol-76

package AWS.Net.WebSocket.Protocol.Draft76 is

   type State is new Protocol.State with null record;

   overriding procedure Send
     (Protocol : in out State;
      Socket   : Object;
      Data     : Stream_Element_Array);
   --  Encode and send data to the WebSocket

   overriding procedure Send
     (Protocol : in out State;
      Socket   : Object;
      Data     : Unbounded_String);
   --  Same as above but for an Unbounded_String. This version supports large
   --  messages possibly sent fragmented.

   overriding procedure Receive
     (Protocol : in out State;
      Socket   : Object;
      Data     : out Stream_Element_Array;
      Last     : out Stream_Element_Offset);
   --  Receive and decode WebSocket data

   overriding function End_Of_Message (Protocol : State) return Boolean;
   --  Returns True if we have read a whole message

   procedure Send_Header
     (Sock : Net.Socket_Type'Class; Request : AWS.Status.Data);
   --  Send specific header for this protocol

end AWS.Net.WebSocket.Protocol.Draft76;
