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<?php |
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/** |
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* Async sockets |
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* |
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* @copyright Copyright (c) 2016, Efimov Evgenij <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace AsyncSockets\RequestExecutor; |
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use AsyncSockets\Event\DataAlertEvent; |
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use AsyncSockets\Event\Event; |
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use AsyncSockets\Event\EventType; |
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use AsyncSockets\Event\ReadEvent; |
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use AsyncSockets\Frame\EmptyFrame; |
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use AsyncSockets\Frame\EmptyFramePicker; |
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use AsyncSockets\Operation\ReadOperation; |
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/** |
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* Class SslDataFlushEventHandler. This decorator flushes unread data containing in socket buffer |
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* which will be evaluated to empty string |
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*/ |
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class SslDataFlushEventHandler implements EventHandlerInterface |
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{ |
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/** |
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* Next handler |
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* |
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* @var EventHandlerInterface|null |
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*/ |
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private $next; |
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/** |
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* Array of socket descriptors currently in flush |
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* |
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* @var bool[] |
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*/ |
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private $inFlushingOperations = []; |
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/** |
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* SslDataFlushEventHandler constructor. |
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* |
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* @param EventHandlerInterface|null $next Next event handler |
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*/ |
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public function __construct(EventHandlerInterface $next = null) |
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{ |
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$this->next = $next; |
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} |
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/** {@inheritdoc} */ |
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public function invokeEvent(Event $event) |
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{ |
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switch ($event->getType()) { |
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case EventType::DATA_ALERT: |
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/** @var DataAlertEvent $event */ |
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$this->onDataAlert($event); |
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break; |
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case EventType::READ: |
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/** @var ReadEvent $event */ |
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$this->onRead($event); |
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break; |
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default: |
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$this->callNextHandler($event); |
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} |
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} |
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/** |
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* Handle first data alert and try to flush ssl data by empty frame |
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* |
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* @param DataAlertEvent $event Event object |
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* |
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* @return void |
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*/ |
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private function onDataAlert(DataAlertEvent $event) |
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{ |
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if ($event->getAttempt() !== 1) { |
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$this->callNextHandler($event); |
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return; |
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} |
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1 |
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$event->nextIs( |
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new ReadOperation( |
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new EmptyFramePicker() |
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) |
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); |
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$key = spl_object_hash($event->getSocket()); |
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$this->inFlushingOperations[$key] = true; |
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} |
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/** |
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* Handle read data |
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* |
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* @param ReadEvent $event Read event |
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* |
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* @return void |
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*/ |
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private function onRead(ReadEvent $event) |
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{ |
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$key = spl_object_hash($event->getSocket()); |
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$frame = $event->getFrame(); |
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if (!($frame instanceof EmptyFrame) || !isset($this->inFlushingOperations[$key])) { |
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$this->callNextHandler($event); |
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return; |
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} |
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unset($this->inFlushingOperations[$key]); |
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} |
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/** |
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* Call next event handler |
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* |
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* @param Event $event Event object |
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* |
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* @return void |
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*/ |
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private function callNextHandler(Event $event) |
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{ |
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if ($this->next) { |
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$this->next->invokeEvent($event); |
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} |
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} |
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} |
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|
edefimov /
async-sockets
