[C] Server concorrente

[Vincenzoflaminio]

Salve ragazzi avendo un server concorrente che di seguito posto mi potreste aiutare ad inserire una parte di codice che mi conteggi il numero dei client serviti (per servito intendo quando ha terminato la connessione con il server) e lo comunichi ad ogni server
Es.: “Sei il client #n, la data locale è: .....”



01: #include <sys/types.h> /* predefined types */
02: #include <unistd.h> /* include unix standard library */
03: #include <arpa/inet.h> /* IP addresses conversion utililites */
04: #include <sys/socket.h> /* socket library */
05: #include <stdio.h> /* include standard I/O library */
06: #include <time.h>
07:
08: int main(int argc, char *argv[])
09: {
10: int list_fd, conn_fd;
11: int i;
12: struct sockaddr_in serv_add, client;
13: char buffer[MAXLINE];
14: socklen_t len;
15: time_t timeval;
16: pid_t pid;
17: int logging=0;
18: ...
19: /* write daytime to client */
20: while (1) {
21: len = sizeof(client);
22: if ( (conn_fd = accept(list_fd, (struct sockaddr *)&client, &len))
23: <0 ) {
24: perror("accept error");
25: exit(-1);
26: }
27: /* fork to handle connection */
28: if ( (pid = fork()) < 0 ){
29: perror("fork error");
30: exit(-1);
31: }
32: if (pid == 0) { /* child */
33: close(list_fd);
34: timeval = time(NULL);
35: snprintf(buffer, sizeof(buffer), "%.24s\r\n", ctime(&timeval));
36: if ( (write(conn_fd, buffer, strlen(buffer))) < 0 ) {
37: perror("write error");
38: exit(-1);
39: }
40: if (logging) {
41: inet_ntop(AF_INET, &client.sin_addr, buffer, sizeof(buffer));
42: printf("Request from host %s, port %d\n", buffer,
43: ntohs(client.sin_port));
44: }
45: close(conn_fd);
46: exit(0);
47: } else { /* parent */
48: close(conn_fd);
49: }
50: }
51: /* normal exit, never reached */
52: exit(0);
53: }