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//
//   MOOS - Mission Oriented Operating Suite 
//  
//   A suit of Applications and Libraries for Mobile Robotics Research 
//   Copyright (C) 2001-2005 Massachusetts Institute of Technology and 
//   Oxford University. 
//    
//   This software was written by Paul Newman at MIT 2001-2002 and Oxford 
//   University 2003-2005. email: pnewman@robots.ox.ac.uk. 
//      
//   This file is part of a  MOOS CORE Component. 
//        
//   This program 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 program 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 program; if not, write to the Free Software 
//   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 
//   02111-1307, USA. 
//
//   The XPC classes in MOOS are modified versions of the source provided 
//   in "Making UNIX and Windows NT Talk" by Mark Nadelson and Thomas Haga 
//


#ifndef _XPCUdpSocket
#define _XPCUdpSocket

#include "XPCSocket.h"
#include <map>


class XPCUdpSocket : public XPCSocket
    {
    public:
        
        // Constructor.  Used to create a new udp socket  - it will receive on _iPort
        XPCUdpSocket(long int _iPort) ;
        
        // Sends a message to a specified host on a specified port. The number of bytes sent is returned
        int iSendMessageTo(void *_vMessage, int _iMessageSize,long int nPort,const std::string & sHost);
        
        //send a telegram to all local network nodes on specified ports
        int iBroadCastMessage(void *_vMessage, int _iMessageSize,long int nPort);
        
        // Receives a UDP message 
        int iRecieveMessage(void *_vMessage, int _iMessageSize, int _iOption = 0);
        
        // Binds the socket to listen on a port number
        void vBindSocket();
                        
        // allows a read with a timeout to prevent from blocking indefinitely
        //int iReadMessageWithTimeOut(void *_vMessage, int _iMessageSize, double dfTimeOut,int _iOption=0);
        
    protected:
        bool GetAddress(long int nPort,const std::string & sHost,sockaddr_in & Address);

        std::map< std::pair< long int , std::string >, sockaddr_in >   m_KnownAdresses ;

        
    };

#endif