#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

#define SIZE 1024
char buf[SIZE];

#define TIME_PORT 9005

int main(int argc, 
         char *argv[])
{
  int sockfd, client_sockfd;
  int nread, len;
  struct sockaddr_in serv_addr,
                   client_addr;
  time_t t;

  /* create endpoint */
  if ((sockfd =
       socket(AF_INET,
              SOCK_STREAM, 0))
      < 0) {
    perror(NULL);
    exit(2);
  }

  /* bind address */
  serv_addr.sin_family =
            AF_INET;
  serv_addr.sin_addr.s_addr =
         htonl(INADDR_ANY);
  serv_addr.sin_port =
            htons(TIME_PORT);

  if (bind(sockfd, &serv_addr, sizeof(serv_addr)) < 0) {
    perror(NULL);
    exit(3);
  }

  /* specify queue */
  listen(sockfd, 5);
  for (;;) {
    len = sizeof(client_addr);
    client_sockfd =
          accept(sockfd,
                 &client_addr,
                 &len);
    if (client_sockfd == -1) {
      perror(NULL);
      continue;
    }

    /* transfer data */
    time(&t);
    sprintf(buf, "%s",
        asctime(localtime(&t)));
    len = strlen(buf) + 1;
    write(client_sockfd, buf, len);
    close(client_sockfd);
  }
}