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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\PacketIdentifierFunctionality; |
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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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/** |
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* A PUBREC Packet is the response to a PUBLISH Packet with QoS 2. |
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* |
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* It is the second packet of the QoS 2 protocol exchange. |
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* |
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* First packet: PUBLISH (QoS lvl2) |
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* Second packet: PUBREC |
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* Third packet: PUBREL |
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* Fourth packet: PUBCOMP |
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* |
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* @see https://go.gliffy.com/go/publish/12498076 |
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*/ |
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final class PubRec extends ProtocolBase implements ReadableContentInterface, WritableContentInterface |
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{ |
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use ReadableContent, WritableContent, PacketIdentifierFunctionality; |
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const CONTROL_PACKET_VALUE = 5; |
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/** |
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* @param string $rawMQTTHeaders |
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* @param ClientInterface $client |
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* @return ReadableContentInterface |
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* @throws \OutOfRangeException |
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*/ |
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public function fillObject(string $rawMQTTHeaders, ClientInterface $client): ReadableContentInterface |
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{ |
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$this->setPacketIdentifierFromRawHeaders($rawMQTTHeaders); |
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return $this; |
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} |
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/** |
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* Creates the variable header that each method has |
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* @return string |
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* @throws \OutOfRangeException |
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*/ |
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public function createVariableHeader(): string |
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{ |
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return $this->getPacketIdentifierBinaryRepresentation(); |
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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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* 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 true; |
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} |
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/** |
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* Any class can overwrite the default behaviour |
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* @param ClientInterface $client |
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* @param WritableContentInterface $originalRequest |
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* @return bool |
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* @throws \LogicException |
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*/ |
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public function performSpecialActions(ClientInterface $client, WritableContentInterface $originalRequest): bool |
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{ |
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$this->controlPacketIdentifiers($originalRequest); |
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$pubRel = new PubRel($this->logger); |
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$pubRel->setPacketIdentifier($this->packetIdentifier); |
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$pubComp = $client->processObject($pubRel); |
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$this->logger->debug('Created PubRel as response, got PubComp back', ['PubComp' => $pubComp]); |
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return true; |
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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
