Discussion :

[babacar0]

j essai de faire un chat simple en utilisant des threads ! le probléme c est que le programme n arrive pas a s exécuter et on me signal des erreur sur le serveur et notamment sur le client !

serveur.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/ioctl.h>
 
#define SIZE 10000
#define port 1000
 
 
struct thread_info{
	int socket_tmp;}
 
int create_tcp_server( int port, int nb_max_clients ) {
	int socket_id;
	int optval = 1;
	struct sockaddr_in sockname;
 
	//On établi la connexion
	if( -1 == (socket_id = socket( AF_INET, SOCK_STREAM, 0 ) ) ) {
		fprintf( stderr, "problème création socket\n" );
		exit( EXIT_FAILURE );
	}
 
	setsockopt( socket_id, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof( int ) );
	memset( (char*)&sockname, 0, sizeof( struct sockaddr_in ) );
 
	/* Bind socket to a port */
 
	sockname.sin_family = AF_INET; /* Internet address family */
	sockname.sin_port = htons( port ); /* Local port */
	sockname.sin_addr.s_addr = htonl( INADDR_ANY );/* Any incoming interface */
 
	if( (bind( socket_id, (struct sockaddr*)&sockname, sizeof(struct sockaddr_in))) == -1)
	{
		fprintf( stderr, "problème avec bind\n" );
		exit( EXIT_FAILURE );
	}
	/* Set socket to listen : Mark the socket so it will listen for incoming connections */
	if((listen(socket_id,nb_max_clients)) == -1)
	{
		fprintf( stderr, "problème avec listen\n" );
		exit( EXIT_FAILURE );
	}
 
	return socket_id;
}
 
static void search(char *chaine){
 
    	char *p = strchr(chaine, '\n');
 
   	if (p)
      	*p = 0;
}
 
static void* envoi(void* arg){
	char msg[32]="";
	short int client_id1=0;
	struct thread_info *info=(struct thread_info *)arg;
	int socket_id=info->socket_tmp;
 
	if((client_id1 = accept((int)socket_id,NULL,0)) == -1)
	{
		fprintf( stderr, "problème avec accept\n" );
		exit( EXIT_FAILURE );
	}
	do{
             printf ("Client1 %s\n >", inet_ntoa(sockname.sin_addr.s_addr)); 
		fgets(msg, sizeof(msg), stdin);
		search(msg);
		send(client_id1, msg,sizeof(msg),0);
	}
	while(strcmp(msg,"exit")!=0);
	return NULL;
}
 
int main( int argc, char** argv ) {
	int socket_id,client_id;
	char buffer[128]= "";
	pthread_t thread;
	//permet le passage d'arguments aux threads
	struct thread_info *info;
	info = malloc(sizeof(struct thread_info));
	//SERVEUR TEXTE
	socket_id = create_tcp_server(1000,4);
	info->socket_tmp=socket_id;
	pthread_create(&thread, NULL, envoi,info);
 
	if((client_id = accept(socket_id,NULL,0)) == -1){
		fprintf( stderr, "probleme avec accept texte\n" );
		exit( EXIT_FAILURE );
	}
	else{
		printf("Connexion serveur texte reussi sur socket %d\n",client_id);
		while(recv(client_id,buffer, sizeof(buffer),0)){
			printf("Stranger: %s\n", buffer);
		}
	}
 
	// 0, pour fermer la socket en réception, 1, en émission, 2 dans les deux sens.
	shutdown( socket_id, 2 );
	close( socket_id );
	shutdown( client_id, 2 );
	close( client_id );
 
	pthread_cancel(thread);
	free(info);
         exit( EXIT_SUCCESS );}

client.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#define port 1000
#define SIZE 10000
 
struct thread_info{
	int socket_tmp;
};
 
int create_tcp_client( const char* hostname, int port ) {
	struct hostent* host_address;
	struct sockaddr_in sockname;
	int optval;
	int socket_id;
 
	if( NULL == ( host_address = gethostbyname( hostname ) ) ) {
		fprintf( stderr, "machine %s inconnue\n", hostname );
		return( EXIT_FAILURE );
	}
	/* Create a reliable, stream socket using TCP */
	if( -1 == ( socket_id = socket( AF_INET, SOCK_STREAM, 0 ) ) ) {
		fprintf( stderr, "création de socket impossible\n" );
		return( EXIT_FAILURE );
	}
 
	optval = 1;
	setsockopt(socket_id, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(int) );
 
	/*Establish connection*/
	sockname.sin_family = host_address->h_addrtype;
        sockname.sin_addr.s_addr = inet_addr(“10.0.3.15”);
 /* l'adresse se trouve dans le champ h_addr de la structure host_adress */
	sockname.sin_port = htons( port );/* Server port */
	memcpy( (char*)&(sockname.sin_addr.s_addr), host_address->h_addr, host_address->h_length );
 
	if((connect( socket_id, (struct sockaddr*)&sockname, sizeof(struct sockaddr_in)))==-1) {
		fprintf( stderr, "connexion impossible socket au server %s\n", hostname );
		return( EXIT_FAILURE );
	}
 
	return socket_id;
}
 
static void search(char *chaine){
 
    	char *p = strchr(chaine, '\n');
 
   	if (p)
      	*p = 0;       
}
 
void* recep(void* socket_id){
 
	char buffer[64] = "";
	int socket_id1 = create_tcp_client( "localhost", 1000 );
 
	while(recv(socket_id1,buffer, sizeof(buffer), 0))
		printf("Stranger: %s\n", buffer);
	return 0;
}
 
int main( int argc, char** argv ) {
	int socket_id=0;
	char msg[128]="";
	pthread_t thread;
	struct thread_info *info; //permet le passage d'arguments aux threads
	info = malloc(sizeof(struct thread_info));
 
	//SOCKET TEXTE
	socket_id = create_tcp_client( "localhost", 2000);
	info->socket_tmp=socket_id;
	pthread_create(&thread, NULL, recep, info);
 
	//ENVOI DE TEXTE
	do{	
		fgets(msg, sizeof(msg), stdin);
		search(msg);
		send(socket_id, msg,sizeof(msg),0);
	}
	while(strcmp(msg,"exit")!=0);
 
	//On ferme les threads
	pthread_cancel(thread);
	//On ferme les sockets
	shutdown( socket_id, 2 );
	close( socket_id );
	free(info);
	exit( EXIT_SUCCESS );
 
}