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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