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<?php |
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declare(strict_types=1); |
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namespace unreal4u\MQTT\Internals; |
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use unreal4u\MQTT\Client; |
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use unreal4u\MQTT\Exceptions\InvalidResponseType; |
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trait ReadableContent |
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{ |
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/** |
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* Length of variable header |
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* @var int |
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*/ |
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protected $variableHeaderSize = 0; |
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final public function populate(string $rawMQTTHeaders): ReadableContentInterface |
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{ |
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//var_dump(base64_encode($rawMQTTHeaders)); // For now: make it a bit easier to create unit tests |
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$this |
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->checkControlPacketValue(\ord($rawMQTTHeaders[0]) >> 4) |
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->fillObject($rawMQTTHeaders); |
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return $this; |
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} |
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final public function checkControlPacketValue(int $controlPacketValue): ReadableContentInterface |
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{ |
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// Check whether the first byte corresponds to the expected control packet value |
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if (static::CONTROL_PACKET_VALUE !== $controlPacketValue) { |
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throw new InvalidResponseType(sprintf( |
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'Value of received value does not correspond to response (Expected: %d, Actual: %d)', |
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static::CONTROL_PACKET_VALUE, |
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$controlPacketValue |
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)); |
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} |
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return $this; |
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} |
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/** |
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* Extracts the packet identifier from the raw headers |
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* |
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* @param string $rawMQTTHeaders |
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* @return int |
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*/ |
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private function extractPacketIdentifier(string $rawMQTTHeaders): int |
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{ |
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// Fastest conversion? Turn the bytes around instead of trying to arm a number and passing it along |
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return \ord($rawMQTTHeaders{3} . $rawMQTTHeaders{2}); |
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} |
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/** |
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* Returns the number of bytes we'll have to read out from |
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* @return int |
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*/ |
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final public function readVariableHeader(): int |
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{ |
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// TODO |
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} |
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/** |
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* Any class can overwrite the default behaviour |
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* @param string $rawMQTTHeaders |
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* @return ReadableContentInterface |
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*/ |
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public function fillObject(string $rawMQTTHeaders): ReadableContentInterface |
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{ |
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return $this; |
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} |
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/** |
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* Any class can overwrite the default behaviour |
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* @param Client $client |
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* @param WritableContentInterface $originalRequest |
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* @return bool |
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*/ |
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public function performSpecialActions(Client $client, WritableContentInterface $originalRequest): bool |
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{ |
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return false; |
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} |
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} |
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unreal4u /
mqtt
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