File: com_2.adb

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------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                         Copyright (C) 2000-2001                          --
--                                ACT-Europe                                --
--                                                                          --
--  This library is free software; you can redistribute it and/or modify    --
--  it under the terms of the GNU General Public License as published by    --
--  the Free Software Foundation; either version 2 of the License, or (at   --
--  your option) any later version.                                         --
--                                                                          --
--  This library is distributed in the hope that it will be useful, but     --
--  WITHOUT ANY WARRANTY; without even the implied warranty of              --
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       --
--  General Public License for more details.                                --
--                                                                          --
--  You should have received a copy of the GNU General Public License       --
--  along with this library; if not, write to the Free Software Foundation, --
--  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.          --
--                                                                          --
------------------------------------------------------------------------------

--  Com_1 and Com_2 are two demos programs which are using the AWS
--  communication protocol. See documentation about these demos on com_1.adb.

with Ada.Command_Line;
with Ada.Strings.Unbounded;
with Ada.Text_IO;

with AWS.Communication.Client;
with AWS.Communication.Server;
with AWS.Response;
with AWS.Utils;

procedure Com_2 is

   use Ada;
   use Ada.Strings.Unbounded;
   use AWS;

   type String_Access is access all String;

   N : Natural := 0;

   Last_Message_Received : Boolean := False;

   function Receive
     (Server     : in String;
      Message    : in String;
      State      : in String_Access;
      Parameters : in Communication.Parameter_Set
        := Communication.Null_Parameter_Set)
     return Response.Data;
   --  Communication Callback

   -------------
   -- Receive --
   -------------

   function Receive
     (Server     : in String;
      Message    : in String;
      State      : in String_Access;
      Parameters : in Communication.Parameter_Set
        := Communication.Null_Parameter_Set)
     return Response.Data is
   begin
      Text_IO.Put_Line ("Server " & Server
                        & " send me the message " & Message);
      Text_IO.Put_Line ("State " & State.all);

      for K in Parameters'Range loop
         Text_IO.Put_Line ("   P" & Utils.Image (K) & " = "
                           & To_String (Parameters (K)));
      end loop;
      Text_IO.New_Line;

      N := N + 1;

      Text_IO.Put_Line ("================== " & Natural'Image (N));

      if N = 10 then
         Last_Message_Received := True;
      end if;

      return Response.Build ("text/html", "Ans [" & Utils.Image (N) & ']');
   end Receive;

   Name : aliased String := "com_2, local server1";

   package Local_Server is
      new Communication.Server (String, String_Access, Receive);

   Answer : Response.Data;

begin
   if Command_Line.Argument_Count = 0 then
      Text_IO.Put_Line ("Usage: com_2 <computer>");
      return;
   end if;

   Local_Server.Start (3456, Name'Access);

   for K in 1 .. 10 loop
      Answer := Communication.Client.Send_Message
        (Command_Line.Argument (1), 1234, "mes_2." & Utils.Image (K));
      Text_IO.Put_Line ("< reply " & Response.Message_Body (Answer));
   end loop;

   --  Exit when last message received

   loop
      exit when Last_Message_Received;
      delay 1.0;
   end loop;

   Local_Server.Shutdown;

end Com_2;