/*
    Copyright (c) 2007-2009 FastMQ Inc.

    This file is part of 0MQ.

    0MQ is free software; you can redistribute it and/or modify it under
    the terms of the Lesser GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    0MQ 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
    Lesser GNU General Public License for more details.

    You should have received a copy of the Lesser GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef __ZMQ_I_INOUT_HPP_INCLUDED__
#define __ZMQ_I_INOUT_HPP_INCLUDED__

#include "../bindings/c/zmq.h"

namespace zmq
{

    struct i_inout
    {
        //  Engine asks to get a message to send to the network.
        virtual bool read (::zmq_msg_t *msg_) = 0;

        //  Engine sends the incoming message further on downstream.
        virtual bool write (::zmq_msg_t *msg_) = 0;

        //  Flush all the previously written messages downstream.
        virtual void flush () = 0;
    
        //  Drop all the references to the engine.
        virtual void detach () = 0;
    };

}

#endif