Multiclient server using fork()

Question

I am trying to create a socket programming server to handle multiple clients at the same time using fork().. But I am not able to implement it properly.I have been trying for a

Answer 1

Try this one might you get solution,

Server Program:

#include 
#include 
#include 
#include 
#include 
#include 

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_ANY);
server_address.sin_port = htons(9734);
server_len = sizeof(server_address);
bind(server_sockfd, (struct sockaddr *)&server_address,server_len);

/* Create a connection queue, ignore child exit details and wait for
clients. */

listen(server_sockfd, 5);

signal(SIGCHLD, SIG_IGN);

while(1) {
char ch;

printf("server waiting\n");

/* Accept connection. */

client_len = sizeof(client_address);
client_sockfd = accept(server_sockfd,(struct sockaddr *)&client_address, &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_sockfd, &ch, 1);
sleep(5);
ch++;
write(client_sockfd, &ch, 1);
close(client_sockfd);
exit(0);
}

/* Otherwise, we must be the parent and our work for this client is
finished. */

else {
close(client_sockfd);
}
}
}

Client Program:

#include
#include
#include
#include
#include
#include
#include
void main()
{
    int sid;
    char s[10]={},s1[10]={};
    struct sockaddr_in ssock,csock;
    sid=socket(AF_INET,SOCK_STREAM,0);
    ssock.sin_family=AF_INET;
    ssock.sin_addr.s_addr=inet_addr("127.0.0.1");
    ssock.sin_port=htons(9734);
    connect(sid,(struct sockaddr *)&ssock,sizeof(ssock));
    while(1)
    {
        printf("\n Enter the string:");
        scanf("%s",s);
        write(sid,(void*)s,strlen(s));
        if(strlen(s)==0)
            break;
        sleep(1);
        read(sid,(void*)s1,sizeof(s1));
        printf("\n The received string is:%s\n",s1);
    }
    close(sid);
}

Here code is doing communication for only one character.