UDPSocketIODevice.h

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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4; -*-
// vim: set shiftwidth=4 softtabstop=4 expandtab:
/*
 ********************************************************************
 ** NIDAS: NCAR In-situ Data Acquistion Software
 **
 ** 2008, Copyright University Corporation for Atmospheric Research
 **
 ** 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.
 **
 ** The LICENSE.txt file accompanying this software contains
 ** a copy of the GNU General Public License. If it is not found,
 ** write to the Free Software Foundation, Inc.,
 ** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **
 ********************************************************************
*/
#ifndef NIDAS_CORE_UDPSOCKETIODEVICE_H
#define NIDAS_CORE_UDPSOCKETIODEVICE_H
 
#include <nidas/util/Socket.h>
#include "SocketIODevice.h"
 
#include <iostream>
 
namespace nidas { namespace core {
 
class UDPSocketIODevice : public SocketIODevice {
 
public:
 
    UDPSocketIODevice();
 
    ~UDPSocketIODevice();
 
    void open(int flags);
 
    int getReadFd() const
    {
        if (_socket) return _socket->getFd();
        return -1;
    }
 
    int getWriteFd() const {
        if (_socket) return _socket->getFd();
        return -1;
    }
 
    size_t read(void *buf, size_t len)
    {
        return _socket->recv(buf,len);
    }
 
    size_t read(void *buf, size_t len, int msecTimeout);
 
    size_t write(const void *buf, size_t len)
    {
        return _socket->send(buf,len);
    }
 
    void close();
 
protected:
 
    nidas::util::DatagramSocket* _socket;
 
    UDPSocketIODevice(const UDPSocketIODevice&);
 
    UDPSocketIODevice& operator=(const UDPSocketIODevice&);
 
};
 
}}  // namespace nidas namespace core
 
#endif