sg_socket_udp.hxx

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// Written by Curtis Olson, started November 2001.
//
// Copyright (C) 2001  Curtis L. Olson - http://www.flightgear.org/~curt
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// $Id: sg__socket__udp_8hxx-source.html,v 1.15 2007-12-17 15:37:11 curt Exp $


#ifndef _SG_SOCKET_UDP_HXX
#define _SG_SOCKET_UDP_HXX


#ifndef __cplusplus
# error This library requires C++
#endif

#include <plib/netSocket.h>

#include <simgear/compiler.h>

#include STL_STRING

#include <simgear/math/sg_types.hxx>
#include <simgear/io/iochannel.hxx>

SG_USING_STD(string);

class SGSocketUDP : public SGIOChannel {

private:

    netSocket sock;

    string hostname;
    string port_str;

    char save_buf[ 2 * SG_IO_MAX_MSG_SIZE ];
    int save_len;

    short unsigned int port;

public:

    SGSocketUDP( const string& host, const string& port );

    ~SGSocketUDP();

    // If specified as a server (in direction for now) open the master
    // listening socket.  If specified as a client (out direction),
    // open a connection to a server.
    bool open( const SGProtocolDir d );

    // read data from socket
    int read( char *buf, int length );

    // read data from socket
    int readline( char *buf, int length );

    // write data to a socket
    int write( const char *buf, const int length );

    // write null terminated string to a socket
    int writestring( const char *str );

    // close file
    bool close();

    bool setBlocking( bool value );

    inline string get_hostname() const { return hostname; }

    inline string get_port_str() const { return port_str; }
};


#endif // _SG_SOCKET_UDP_HXX

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