Hello,
i want to know to have multiple clients connects to same server
program does following is correct code
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <signal.h>
#include <unistd.h>
int main()
{
int server_sockfd, client_sockfd;
int server_len, client_len;
struct sockaddr_in server_address;
struct sockaddr_in client_address;
server_sockfd = socket(AF_INET, SOCK_STREAM, 0);
server_address. sin_family = AF_INET;
server_address. sin_addr.s_addr = htonl(INADDR_AN Y);
server_address. sin_port = htons(9734);
server_len = sizeof(server_a ddress);
bind(server_soc kfd, (struct sockaddr *)&server_addre ss,
server_len);
/* Create a connection queue, ignore child exit details and wait for
clients. */
listen(server_s ockfd, 5);
signal(SIGCHLD, SIG_IGN);
while(1) {
char ch;
printf("server waiting\n");
/* Accept connection. */
client_len = sizeof(client_a ddress);
client_sockfd = accept(server_s ockfd,
(struct sockaddr *)&client_addre ss, &client_len) ;
/* Fork to create a process for this client and perform a test to see
whether we're the parent or the child. */
if(fork() == 0) {
/* If we're the child, we can now read/write to the client on
client_sockfd.
The five second delay is just for this demonstration. */
read(client_soc kfd, &ch, 1);
sleep(5);
ch++;
write(client_so ckfd, &ch, 1);
close(client_so ckfd);
exit(0);
}
/* Otherwise, we must be the parent and our work for this client is
finished. */
else {
close(client_so ckfd);
}
}
}
If yes then when to use then select call(i.e. FD_SET,FD_CLR,F D_SET)?
if no then select is only thing to have server socket program on one
pc and other clients on many pcs to have communication with server?
I want to have communication environment with many clients and one
server serving all at same time.
i want to know to have multiple clients connects to same server
program does following is correct code
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <signal.h>
#include <unistd.h>
int main()
{
int server_sockfd, client_sockfd;
int server_len, client_len;
struct sockaddr_in server_address;
struct sockaddr_in client_address;
server_sockfd = socket(AF_INET, SOCK_STREAM, 0);
server_address. sin_family = AF_INET;
server_address. sin_addr.s_addr = htonl(INADDR_AN Y);
server_address. sin_port = htons(9734);
server_len = sizeof(server_a ddress);
bind(server_soc kfd, (struct sockaddr *)&server_addre ss,
server_len);
/* Create a connection queue, ignore child exit details and wait for
clients. */
listen(server_s ockfd, 5);
signal(SIGCHLD, SIG_IGN);
while(1) {
char ch;
printf("server waiting\n");
/* Accept connection. */
client_len = sizeof(client_a ddress);
client_sockfd = accept(server_s ockfd,
(struct sockaddr *)&client_addre ss, &client_len) ;
/* Fork to create a process for this client and perform a test to see
whether we're the parent or the child. */
if(fork() == 0) {
/* If we're the child, we can now read/write to the client on
client_sockfd.
The five second delay is just for this demonstration. */
read(client_soc kfd, &ch, 1);
sleep(5);
ch++;
write(client_so ckfd, &ch, 1);
close(client_so ckfd);
exit(0);
}
/* Otherwise, we must be the parent and our work for this client is
finished. */
else {
close(client_so ckfd);
}
}
}
If yes then when to use then select call(i.e. FD_SET,FD_CLR,F D_SET)?
if no then select is only thing to have server socket program on one
pc and other clients on many pcs to have communication with server?
I want to have communication environment with many clients and one
server serving all at same time.
Comment