network.h

即时通信程序(类似于QQ,MSN) 用C写的

/*    
 *   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
 *
 *********************************************************************************/
 

#ifndef _NETWORK
#define _NETWORK

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#ifndef _WIN32
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h> 
#else
#include <winsock.h>
#endif
    

//structure de paquet
// - un destinataire (numero du socket)
// - un tag (type de paquet)
// - une valeur
// - suivant dans la liste (facultatif)
struct _paquet
{
 short destinataire;
 char tag[20];
 char valeur[255];
 struct _paquet *next;
};

struct _client
{
 short socket;
 char ip[16];
 struct _client *next;
};

class network
{
 public :
  network(int);			//constructeur de la classe
  ~network();			//destructeur de la classe
  int demarre_serveur();	//lance l'interface reseau
  int demarre_client(char*);	//lance l'interface reseau en version client
  int update_input();		//met a jour le buffer d'entree
  int update_output();		//met a jour le buffer de sortie
  int envoi(int, char*, char*);	//cree un paquet et l'ajoute au buffer de sortie
  struct _paquet *get_paquets(); //renvoie la liste des paquets arriv閟
  void ferme_client(int);	//ferme un client
  void set_debug(short);	//acive/d閟active le mode debug
  void dump_liste_in();		//affiche le buffer d'entr閑
  void dump_liste_out();	//affiche le buffer de sortie
  char * get_ip(short);    //renvoie l'ip d'un client
  void broadcast_msg(char *, char *); //message pour tous
  int remove_id;      //id d'un client qui s'est deconnect