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/*
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty the
Queen in Right of Canada (Communications Research Center Canada)
*/
/*
This file is part of CRC-DabMux.
CRC-DabMux 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 3 of the
License, or (at your option) any later version.
CRC-DabMux 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 CRC-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _UDPSOCKET
#define _UDPSOCKET
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "InetAddress.h"
#ifdef _WIN32
# include <winsock.h>
# define socklen_t int
# define reuseopt_t char
#else
# include <sys/socket.h>
# include <netinet/in.h>
# include <unistd.h>
# include <netdb.h>
# include <arpa/inet.h>
# include <pthread.h>
# define SOCKET int
# define INVALID_SOCKET -1
# define SOCKET_ERROR -1
# define reuseopt_t int
#endif
//#define INVALID_PORT -1
#include <stdlib.h>
#include <iostream>
class UdpPacket;
/**
* This class represents a socket for sending and receiving UDP packets.
*
* A UDP socket is the sending or receiving point for a packet delivery service.
* Each packet sent or received on a datagram socket is individually
* addressed and routed. Multiple packets sent from one machine to another may
* be routed differently, and may arrive in any order.
* @author Pascal Charest pascal.charest@crc.ca
*/
class UdpSocket {
public:
UdpSocket();
UdpSocket(int port, char *name = NULL);
~UdpSocket();
static int init();
static int clean();
int create(int port = 0, char *name = NULL);
int send(UdpPacket &packet);
int receive(UdpPacket &packet);
int joinGroup(char* groupname);
/**
* Connects the socket on a specific address. Only data from this address
* will be received.
* @param addr The address to connect the socket
* @warning Not implemented yet.
*/
void connect(InetAddress &addr);
int setBlocking(bool block);
protected:
/// The address on which the socket is binded.
InetAddress address;
/// The low-level socket used by system functions.
SOCKET listenSocket;
};
/**
* This class represents a UDP packet.
*
* UDP packets are used to implement a connectionless packet delivery service.
* Each message is routed from one machine to another based solely on
* information contained within that packet. Multiple packets sent from one
* machine to another might be routed differently, and might arrive in any order.
* @author Pascal Charest pascal.charest@crc.ca
*/
class UdpPacket {
public:
UdpPacket(unsigned int initSize = 1024);
// Not implemented
UdpPacket(const UdpPacket& packet);
~UdpPacket();
char *getData();
void addData(void *data, unsigned size);
unsigned long getLength();
unsigned long getSize();
unsigned long getOffset();
void setLength(unsigned long len);
void setOffset(unsigned long val);
void setSize(unsigned newSize);
InetAddress &getAddress();
// Not implemented
const UdpPacket &operator=(const UdpPacket&);
private:
char *dataBuf;
unsigned long length, size, offset;
InetAddress address;
};
#endif // _UDPSOCKET
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