socket:send integer

User 11441214

how can i send integer ??:confused: ---help---

/*
Clent socket tcp
*/
#include //printf
#include //strlen
#include //socket
#include //inet_addr

int main(int argc , char *argv[])
{
int sock;
struct sockaddr_in server;
char message[1000] , server_reply[2000];
int a;
char r1;

//Creation d1 socket
sock = socket(AF\_INET , SOCK\_STREAM , 0);
if (sock == -1)
{
    printf("impossible de creer une socket\\n");
}
puts("Socket creer!!!! good job");
 
server.sin\_addr.s\_addr = inet\_addr("127.0.0.1");//adresse ipv4
server.sin\_family = AF\_INET;// famille d'@
server.sin\_port = htons( 8880 );//\*\*en utilisent big endien NBO   pour la sérialiser , htons (host to network short) 

//Connection au serveur

puts ("connection au serveur\n") ;
if (connect(sock , (struct sockaddr *)&server/*pointeur sur l'@ du serveur est qui est passé en parametre**/ , sizeof(server)) < 0)
{
perror("peut pas connecter au serveur");
return 1;
}

puts("vous etnSes Connecté\\n");
     //communition server
while(1)
{
    printf("Enter votre nbres : ");
    scanf("%d " ,&a );
    
     
    //envoyer data
    if  (( send(sock , (char \* )& a , sizeof(&a) , 0) < 0)  ) 

    {
        puts("l'envoie a ete echoué");
        return 1;
    }
     
    //la réponse du serveur
    if( recv(sock , (char \*)& a , 2000 , 0) < 0)
    {
        puts("recv echoué");
        break;
    }
     
    
}
 
close(sock);
return 0;

}

/*
C socket server TCP
*/

#include
#include //strlen
#include
#include //inet_addr
#include //write

int main(int argc , char *argv[])
{
int socket_desc , client_sock , c , read_size,read_size1;
struct sockaddr_in server , client;
char client_message[2000];
int a;
char t ;

//Creation d1 socket
socket\_desc = socket(AF\_INET , SOCK\_STREAM , 0);
if (socket\_desc == -1)
{
    printf("on peut pas creer la socket");
}
puts("Socket bien creer");
 
//Preparer sockaddr\_in structure
server.sin\_family = AF\_INET;//\*\*\*fammille d'@
server.sin\_addr.s\_addr = INADDR\_ANY;//\*\*\*\*\*\*\*\*@ qqn
server.sin\_port = htons( 8880);//\*\*\*\*\*en utilisen

Lost User

Your code already sends and receives an integer; what is the problem?

Jochen Arndt

There are some errors in your. The first is the buffer size when sending an integer;

if (( send(sock , (char * )& a , sizeof(&a) , 0) < 0) )

The passed buffer size is wrong. It should be:

if (( send(sock , (char * )& a , sizeof(a) , 0) < 0) )

When reading replies, you probably want to read them into another buffer (as indicated by the size). So change

if( recv(sock , (char *)& a , 2000 , 0) < 0)

to

if( recv(sock , server_reply , sizeof(server_reply) , 0) < 0)

Similar for the server where you should first read an integer and then send the reply. So change this

if ( (read_size = recv(client_sock , (char *)&a , 2000 , 0)) > 0 )

to

if ( (read_size = recv(client_sock , (char *)&a , sizeof(a) , 0)) > 0 )

and send the reply afterwards.

User 11441214

thank you Richard McCutchan, the problem is that I wanted to display the number at the server level. :doh:

User 11441214

merci beaucoup Jochen Arndt :thumbsup:

Lost User

So what is the problem?