unsigned long blocking = 0;  fd_set rf_fdset;  int retry = 5;  struct timeval tv;  char error;  int length;  network->address.sin_family = AF_INET;  len = sizeof(network->address);  ioctl(datalink->fd,FIONBIO,&non_blocking);  try_again:  ret = connect(datalink->fd, (const struct sockaddr *)&network->address, len); MOD_LOG(SYS_DATALINK_MOD,  FD_CLR(datalink->fd,&rf_fdset);  FD_ZERO(&rf_fdset);  FD_SET(datalink->fd, &rf_fdset);  tv.tv_sec = 0;  tv.tv_usec = 10;  length = sizeof(int);  if( select(datalink->fd+1, NULL, &rf_fdset, NULL, &tv) > 0)  {      if (FD_ISSET(datalink->fd,&rf_fdset))      {          length = sizeof(error);          if(getsockopt(datalink->fd, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&length) < 0)          {              ret =0;          } else {              if(error == 0)              { ret =1; }              else ret =0; }          }         else ret =0;      }      else          ret =0;   } else ret = 1;