public function bindSockets($addrs = [], $max = 0)
{
if (is_string($addrs)) {
$addrs = array_map('trim', explode(',', $addrs));
}
$n = 0;
foreach ($addrs as $addr) {
if ($this->bindSocket($addr)) {
++$n;
}
if ($max > 0 && $n >= $max) {
return $n;
}
}
return $n;
}