select_server.c

/* create socket */
serverSocket = socket(...);
/* bind the socket to an address and port */
bind(serverSocket, ...);
/* socket will listen for incoming connections */
listen(serverSocket, ...);

listen_fds = [];

listen_fds << serverSocket;

timeout = 10ms;

for(;;) {

  /* Listen to all file descriptors in listen_fds */
  active_fds = listen_on_all(listen_fds, timeout);
  if(active_fds.count > 0) {
    for_each active_fd in active_fds {
  
      if (serverSocket == active_fd) {
    
        new_fd = accept(serverSocket, (...));
        listen_fds << new_fd;
      
      } else {
    
        // handle data from a client
        (...)
      
        // disconnect if needed
        close(active_fd);
        listen_fds.delete(active_fd);
      
      }
    }
  } else { // if(active_fds.count > 0)
    // Timeout
    // do some more stuff
    do_some_other_stuff(...)
  }
}