kakserpom / phpdaemon

     */

    public function resolve($hostname, $cb, $noncache = false, $nameServers = false)

    {

        if (!$this->preloading->hasCompleted()) {

            $pool = $this;

            $this->preloading->addListener(function ($job) use ($hostname, $cb, $noncache, $pool, $nameServers) {

                $pool->resolve($hostname, $cb, $noncache, $nameServers);

            });

            return;

        }

        $hostname = rtrim($hostname, '.') . '.';

        if (isset($this->hosts[$hostname])) {

            $cb($this->hosts[$hostname]);

        if(!$nameServers){

            $nameServers = $this->nameServers;

        }

        if (!$this->preloading->hasCompleted()) {

            $this->preloading->addListener(function ($job) use ($hostname, $cb, $noncache, $pool, $nameServers, $proto) {

                $pool->get($hostname, $cb, $noncache, $nameServers, $proto);

            });

            return;

        }

        $nameServer = reset ($nameServers);

        $isIpv6 = filter_var($nameServer, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);

        if($isIpv6){