/* socket Internet de type STREAM - COTE CLIENT */
/* gcc client_tcp.c -o client_tcp */

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

main(int argc, char * argv[])

{  int i;
   int sock, lg_max, lg_rec;
   struct sockaddr_in nom_srv, nom;
   struct hostent *hp;
   char message[100];

   /* construction du socket local */ 
   
   if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
     {
      printf ("erreur creation socket\n");
      exit (1);
     }     


   /* construction du nom externe du socket distant */ 

   if ((hp = gethostbyname("SUN1")) == NULL)
     {
      printf ("erreur gethostbyname\n");
      exit (1);
     }      
   nom_srv.sin_family = AF_INET;
   nom_srv.sin_port = 9000;
   bcopy(hp->h_addr, (char *)&(nom_srv.sin_addr.s_addr), hp->h_length);

   /* connexion au serveur */ 

   if (connect(sock, (struct sockaddr *)&nom_srv, sizeof(nom_srv)) == -1)
     {
      printf ("echec ouverture de connexion\n");
      exit (1);
     }   
   printf ("\n*** Connexion etablie ***\n\n");   

   /* reception des messages */ 

    lg_max = 100;
    lg_rec = 0;

    for (i=1; i<= 5; i++) 
      {
       printf ("*** Attente Message ***\n\n");
       if ((lg_rec = read(sock,message,lg_max)) > 0)
         {
          printf ("taille du message recu : %d\n", lg_rec);
	  message[lg_rec]='\0';
          printf ("message recu : %s\n\n", message);
         }
       else
         {
          printf ("erreur en reception\n");
          exit(1);
         }          
      }

   /* fermeture du socket */ 
    close(sock);
}