#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <sys/time.h>
#include <unistd.h>

int main(int argc, char *argv[]) {
  time_t currtime;
  int sock, nsock;
  fd_set rd;
  struct sockaddr_in my_info;
  struct sockaddr_in rem_info;
  struct timeval tv;
  char buff[1024], users[1024];
  int size;

  tv.tv_sec = 0;
  tv.tv_usec = 500000;

  sock = socket(AF_INET, SOCK_STREAM, 0);

  my_info.sin_family = AF_INET;
  my_info.sin_port = htons(atoi(argv[1]));
  my_info.sin_addr.s_addr = INADDR_ANY;
  memset(&(my_info.sin_zero), 0, 8);
  memset(buff, 0, sizeof(buff));
  memset(users, 0, sizeof(users));

  bind(sock, (struct sockaddr *)&my_info, sizeof(struct sockaddr));
  listen(sock, 10);

  size = sizeof(struct sockaddr_in);

//  fcntl(sock, F_SETFL, O_NONBLOCK);

//  FD_ZERO(&rd);
//  FD_SET(sock, &rd);

  while (1) {
    nsock = accept(sock, &rem_info, &size);
//    FD_SET(nsock, &rd);
//    select(nsock+1, &rd, NULL, NULL, &tv);
//    fcntl(nsock, F_SETFL, O_NONBLOCK);

    printf("Connect from %s\n", inet_ntoa(rem_info.sin_addr.s_addr));
//    time(&currtime);
//    strcpy(buff, ctime(&currtime));

    if (!fork()) {
      send(nsock, "Enter your name: ", 18, 0);
      recv(nsock, buff, sizeof(buff), 0);
      send(nsock, "Your name is ", 14, 0);
      send(nsock, buff, sizeof(buff), 0);
      memset(buff, 0, sizeof(buff));
    }
    close(nsock);
  }
}