My socket server program is mentioned below. It works fine with the single client but when I try to connect it with another client at the same time, I am unable to connect. But I have defined MAX_CLIENTS in my program as 2 but still why I am unable to connect with multiple clients? What is the correct process to connect with multiple client? Will I be able to connect with multiple client by modifying this code? Any possible fix?
Socket Server Code:
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <error.h>
#include <strings.h>
#include <unistd.h>
#include <arpa/inet.h>
#define ERROR -1
#define MAX_CLIENTS 2
#define MAX_DATA 1024
main (int argc, char **argv){
struct sockaddr_in server;
struct sockaddr_in client;
int sock;
int new;
int sockaddr_len = sizeof (struct sockaddr_in);
int data_len;
char data [MAX_DATA];
if ((sock = socket (AF_INET, SOCK_STREAM, 0)) == -1)
{
perror ("socket: ");
exit (-1);
}
printf("after socket");
server.sin_family = AF_INET;
server.sin_port = htons(atoi(argv[2]));
server.sin_addr.s_addr = INADDR_ANY;
bzero (&server.sin_zero, 8);
printf("after server");
if ((bind (sock, (struct sockaddr*)&server, sockaddr_len)) == -1)
{
perror ("bind");
exit (-1);
}
printf("after bind");
if ((listen(sock, MAX_CLIENTS)) == ERROR)
{
perror ("listen");
exit (-1);
}
printf("after listen");
while(1)
{
if ((new = accept(sock, (struct sockaddr*)&client, &sockaddr_len)) == ERROR)
{
perror ("accept");
exit (-1);
}
printf("after new");
printf("New client connected from port no %d and IP %s\n",ntohs(client.sin_port), inet_ntoa(client.sin_addr));
data_len = 1;
while (data_len)
{
data_len = recv (new, data, MAX_DATA, 0);
if (data_len)
{
send (new, data, data_len, 0) ;
data [data_len]='\0';
printf("Sent mesg: %s", data);
}
printf("after datalen");
}
printf("Client Disconnected\n");
close(new);
}
printf("after close new");
close (sock);
}
