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<?php |
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declare(strict_types=1); |
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namespace unreal4u\MQTT\Protocol; |
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use unreal4u\MQTT\Internals\ClientInterface; |
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use unreal4u\MQTT\Internals\ProtocolBase; |
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use unreal4u\MQTT\Internals\ReadableContent; |
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use unreal4u\MQTT\Internals\ReadableContentInterface; |
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use unreal4u\MQTT\Internals\WritableContent; |
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use unreal4u\MQTT\Internals\WritableContentInterface; |
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use unreal4u\MQTT\Utilities; |
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/** |
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* A PUBACK Packet is the response to a PUBLISH Packet with QoS level 1. |
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*/ |
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final class PubAck extends ProtocolBase implements ReadableContentInterface, WritableContentInterface |
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{ |
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use ReadableContent, WritableContent; |
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public $packetIdentifier = 0; |
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const CONTROL_PACKET_VALUE = 4; |
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public function fillObject(string $rawMQTTHeaders, ClientInterface $client): ReadableContentInterface |
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{ |
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$this->packetIdentifier = $this->extractPacketIdentifier($rawMQTTHeaders); |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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* @throws \LogicException |
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*/ |
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public function performSpecialActions(ClientInterface $client, WritableContentInterface $originalRequest): bool |
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{ |
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/** @var Publish $originalRequest */ |
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if ($this->packetIdentifier !== $originalRequest->packetIdentifier) { |
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throw new \LogicException('Packet identifiers to not match!'); |
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} |
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return true; |
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} |
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public function createVariableHeader(): string |
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{ |
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return Utilities::convertNumberToBinaryString($this->packetIdentifier); |
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} |
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/** |
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* Creates the actual payload to be sent |
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* @return string |
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*/ |
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public function createPayload(): string |
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{ |
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return ''; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function expectAnswer(string $data, ClientInterface $client): ReadableContentInterface |
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{ |
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return $this; |
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} |
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/** |
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* Some responses won't expect an answer back, others do in some situations |
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* @return bool |
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*/ |
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public function shouldExpectAnswer(): bool |
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{ |
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return false; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getOriginControlPacket(): int |
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{ |
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return Publish::getControlPacketValue(); |
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} |
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} |
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unreal4u /
mqtt
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