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    Types: TextFile
    Names: »B«

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TextFile

with Host_Name;
with Low_Level_Message;
with Mailbox_Msg_To_Send;
with Mailbox_Received_Msg;
with Physical_Layer;
with Socket_Defs;
with Socket_Port_Manager;
with Text_Io;
with Umps_Utilities;



package body Behavior_Link_Layer is


    task body T_Server is

        The_Behavior_Listen_Socket_Port : Socket_Port.Object;
        The_Behavior_Host_Name          : Low_Level_Message.Object;  
        The_Behavior_Listen_Socket_Id   : Socket_Defs.Socket_Id;

        The_Task_Performing_Mailbox_Received_Msg :
           Mailbox_Received_Msg.Access_Task_Mailbox;

    begin

        accept Start (Behavior_Listen_Socket_Port          : Socket_Port.Object;  
                      Task_Performing_Mailbox_Received_Msg :
                         Mailbox_Received_Msg.Access_Task_Mailbox) do

            The_Behavior_Listen_Socket_Port := Behavior_Listen_Socket_Port;  
            The_Task_Performing_Mailbox_Received_Msg :=
               Task_Performing_Mailbox_Received_Msg;

            The_Behavior_Listen_Socket_Id :=
               Physical_Layer.Create_Server (The_Behavior_Listen_Socket_Port);
            Text_Io.Put_Line ("(Behavior_Link_Layer).Start_Server : Finished.");
        end Start;


        declare

            The_Behavior_Service_Socket_Id    : Socket_Defs.Socket_Id;
            The_Buffer_To_Receive             : Low_Level_Message.Object;  
            The_Number_Of_Caracteres_Received : Integer;
            Result                            : Boolean;

        begin
            loop

                -- Connection to get a message :

                Text_Io.Put_Line
                   ("(Behavior_Link_Layer).Server Start waiting far a connection.");

                The_Behavior_Service_Socket_Id :=
                   Physical_Layer.Server_Wait_For_A_Connection
                      (The_Behavior_Listen_Socket_Id);

                Text_Io.Put_Line ("(Behavior_Link_Layer).Server I got one.");

                Physical_Layer.Receive_String
                   (The_Behavior_Service_Socket_Id, The_Buffer_To_Receive,
                    The_Number_Of_Caracteres_Received);

                Text_Io.Put_Line
                   ("(Behavior_Link_Layer).Server I received the message");


                -- Send the message to the received_message_fifo :

                The_Task_Performing_Mailbox_Received_Msg.Put
                   (The_Buffer_To_Receive, Result);

                Text_Io.Put_Line
                   ("(Behavior_Link_Layer).Server The message has been sent to the Mailbox");

                if Result = False then
                    Text_Io.Put_Line  
                       ("Behavior_Link_Layer).Server : Putting message into received messages fifo impossible");
                end if;

                Physical_Layer.Close_Socket (The_Behavior_Service_Socket_Id);

            end loop;
        end;


    end T_Server;






    task body T_Client is

        The_Broker_Listen_Socket_Port           : Socket_Port.Object;
        The_Broker_Host_Name                    : Host_Name.Object;
        The_Task_Performing_Mailbox_Msg_To_Send :
           Mailbox_Msg_To_Send.Access_Task_Mailbox;
        The_Msg                                 : Low_Level_Message.Object;
        Result                                  : Boolean;
        Service_Socket_Id                       : Socket_Defs.Socket_Id;
        Number_Of_Characters_Sent               : Integer;

    begin

        accept Start (Broker_Listen_Socket_Port           : Socket_Port.Object;
                      Broker_Host_Name                    : Host_Name.Object;
                      Task_Performing_Mailbox_Msg_To_Send :
                         Mailbox_Msg_To_Send.Access_Task_Mailbox) do

            The_Broker_Listen_Socket_Port := Broker_Listen_Socket_Port;
            The_Broker_Host_Name          := Broker_Host_Name;

            The_Task_Performing_Mailbox_Msg_To_Send :=
               Task_Performing_Mailbox_Msg_To_Send;

            Text_Io.Put_Line ("(Behavior_Link_Layer).Start_Client : Finished.");

        end Start;

        Text_Io.Put_Line
           ("(Behavior_Link_Layer).Client : Start waiting far a connection to establish.");

        loop
            select      -- Active wait ....


                The_Task_Performing_Mailbox_Msg_To_Send.Get (The_Msg, Result);
                if Result = True then
                    Text_Io.Put_Line
                       ("(Behavior_Link_Layer).Client : I've to send a message.");

                    Service_Socket_Id := Physical_Layer.Join_Server
                                            (The_Broker_Host_Name,
                                             The_Broker_Listen_Socket_Port);
                    Text_Io.Put_Line
                       ("(Behavior_Link_Layer).Client : I joined the Server.");

                    if Service_Socket_Id < 0 then
                        raise Socket_Defs.Join_Server_Error;
                    end if;  
                    Physical_Layer.Send_String (Service_Socket_Id, The_Msg,
                                                Number_Of_Characters_Sent);
                    Text_Io.Put_Line
                       ("(Behavior_Link_Layer).Client : The message was sent");

                    Physical_Layer.Close_Socket (Service_Socket_Id);
                    Text_Io.Put_Line
                       ("(Behavior_Link_Layer).Client : The connection is close.");
                else
                    Text_Io.Put_Line
                       ("(Behavior_Link_Layer).Client : No message present");
                    delay (Duration (2));
                end if;
            else  
                Text_Io.Put_Line
                   ("(Behavior_Link_Layer).Client : No connection.");
                delay (Duration (2));
            end select;
        end loop;
    end T_Client;

end Behavior_Link_Layer;