foreach ($this->socks as $k => $sock) {
if (isset($this->s2u[intval($sock)])) {
$user = $this->s2u[intval($sock)];
$response = $user->rd_cache_get();
if ($response == "") {
$content = "";
foreach ($this->socks as $k => $sock) {
if (isset($this->s2u[intval($sock)])) {
$user = $this->s2u[intval($sock)];
$response = $user->rd_cache_get();
if ($response == "") {
$content = "";