/**
* Returns the current interval. If none is set, a new one is randomly created.
* @return int
*/
protected function getCurrentInterval()
{
if ($this->currentInterval === null) {
$this->currentInterval = $this->randomizer->randNum($this->from, $this->to);
}
return $this->currentInterval;
}
/**
* @param RequestInterface $request
* @return RotatingProxyInterface
*/
protected function getWorkingProxy(RequestInterface $request)
{
$waitingProxies = [];
$waitingProxyTimes = [];
while ($this->hasEnoughWorkingProxies()) {
$randKey = $this->randomizer->randKey($this->workingProxies);
// $randKey = array_rand($this->workingProxies);
$proxy = $this->workingProxies[$randKey];
if (!$proxy->isUsable()) {
unset($this->workingProxies[$randKey]);
continue;
}
if ($proxy->hasToWait()) {
$waitingProxyTimes[$randKey] = $proxy->getWaitingTime();
$waitingProxies[$randKey] = $proxy;
unset($this->workingProxies[$randKey]);
continue;
}
$this->workingProxies += $waitingProxies;
return $proxy;
}
if (count($waitingProxies) > 0) {
asort($waitingProxyTimes);
reset($waitingProxyTimes);
$minKey = key($waitingProxies);
/** @var RotatingProxyInterface $minWaitingProxy */
$minWaitingProxy = $waitingProxies[$minKey];
// $minimumWaitingTime = ceil(reset($waitingProxyTimes));
$event = new WaitingEvent($minWaitingProxy);
$this->getEmitter()->emit(self::EVENT_ON_WAIT, $event);
$minimumWaitingTime = $minWaitingProxy->getWaitingTime();
// the WaitingTime might have been changed by a listener to the WaitingEvent
if ($minimumWaitingTime > 0) {
sleep($minimumWaitingTime);
}
$this->workingProxies += $waitingProxies;
return $this->getWorkingProxy($request);
}
if ($this->useOwnIp) {
$event = new UseOwnIpEvent();
$this->getEmitter()->emit(self::EVENT_ON_USE_OWN_IP, $event);
return new NullProxy();
}
$msg = "No proxies left and usage of own IP is forbidden";
throw new NoProxiesLeftException($this, $request, $msg);
}
/**
* Switches the current identity to a randomly chosen one.
*/
public function switchIdentity()
{
$key = $this->randomizer->randKey($this->identities);
$this->currentIdentity = $this->identities[$key];
$this->randomCounter->restart();
}
