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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <pthread.h>
void* handle_client(void *);
int client_list[16];
int client_list_len;
int main(int argc, char *argv[]) {
int sockfd;
pthread_mutex_t list_lock;
pthread_mutex_init(&list_lock, NULL);
struct sockaddr_in servaddr, cli;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
int port = atoi(argv[1]);
servaddr.sin_port = htons(port);
bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
listen(sockfd, 128);
printf("Server started at %s...\n", inet_ntoa(servaddr.sin_addr));
fflush(stdout);
while(1) {
socklen_t len = sizeof(cli);
int connfd = accept(sockfd, (struct sockaddr*)&cli, &len);
int i = getpeername(connfd, (struct sockaddr*)&cli, &len);
client_list[client_list_len] = connfd;
client_list_len += 1;
printf("Clients connected: %d \nDescriptors: ", client_list_len);
for(int i = 0; i < client_list_len; i++) {
printf("%d ", client_list[i]);
}
printf("\n");
fflush(stdout);
pthread_t client_thread;
pthread_create(&client_thread, NULL, &handle_client, &connfd);
}
close(sockfd);
return 0;
}
void* handle_client(void* param) {
int *connfd = (int *) param;
int n;
char buf[100];
bzero(&buf, 100);
while ((n = recv(*connfd, buf, 100, 0)) > 0) {
printf("Client message (%d): %s", *connfd, buf);
fflush(stdout);
send(*connfd, buf, n, 0);
bzero(&buf, 100);
}
close(*connfd);
return 0;
}
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