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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\Exceptions\Connect\BadUsernameOrPassword; |
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use unreal4u\MQTT\Exceptions\Connect\GenericError; |
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use unreal4u\MQTT\Exceptions\Connect\IdentifierRejected; |
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use unreal4u\MQTT\Exceptions\Connect\NotAuthorized; |
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use unreal4u\MQTT\Exceptions\Connect\ServerUnavailable; |
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use unreal4u\MQTT\Exceptions\Connect\UnacceptableProtocolVersion; |
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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\WritableContentInterface; |
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use function ord; |
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use function sprintf; |
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/** |
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* The CONNACK Packet is the packet sent by the Server in response to a CONNECT Packet received from a Client. |
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*/ |
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final class ConnAck extends ProtocolBase implements ReadableContentInterface |
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{ |
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use ReadableContent; |
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private const CONTROL_PACKET_VALUE = 2; |
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/** |
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* The connect return code. If a server sends a CONNACK packet containing a non-zero return code it MUST then close |
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* the Network Connection |
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* |
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* @see http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Table_3.1_- |
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* |
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* 0 = Connection accepted |
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* 1 = Connection Refused, unacceptable protocol version |
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* 2 = Connection Refused, identifier rejected |
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* 3 = Connection Refused, Server unavailable |
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* 4 = Connection Refused, bad user name or password |
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* 5 = Connection Refused, not authorized |
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* 6-255 = Reserved for future use |
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* @var int |
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*/ |
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private $connectReturnCode = -1; |
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/** |
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* @inheritdoc |
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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 GenericError |
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* @throws NotAuthorized |
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* @throws BadUsernameOrPassword |
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* @throws ServerUnavailable |
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* @throws IdentifierRejected |
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* @throws UnacceptableProtocolVersion |
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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->connectReturnCode = ord($rawMQTTHeaders[3]); |
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if ($this->connectReturnCode !== 0) { |
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// We have detected a problem while connecting to the broker, send out the correct exception |
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$this->throwConnectException(); |
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} |
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return $this; |
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} |
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/** |
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* Don't know why you should ever need this, but don't allow to overwrite it |
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* @return int |
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*/ |
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public function getConnectReturnCode(): int |
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{ |
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return $this->connectReturnCode; |
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} |
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/** |
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* Will throw an exception in case there is something bad with the connection |
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* |
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* @see http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/errata01/os/mqtt-v3.1.1-errata01-os-complete.html#_Toc385349257 |
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* |
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* @return ConnAck |
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* @throws GenericError |
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* @throws NotAuthorized |
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* @throws BadUsernameOrPassword |
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* @throws ServerUnavailable |
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* @throws IdentifierRejected |
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* @throws UnacceptableProtocolVersion |
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*/ |
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private function throwConnectException(): self |
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{ |
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6 |
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switch ($this->connectReturnCode) { |
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6 |
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case 1: |
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1 |
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throw new UnacceptableProtocolVersion( |
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'The Server does not support the level of the MQTT protocol requested by the Client' |
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); |
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5 |
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case 2: |
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throw new IdentifierRejected('The Client identifier is correct UTF-8 but not allowed by the Server'); |
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case 3: |
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throw new ServerUnavailable('The Network Connection has been made but the MQTT service is unavailable'); |
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case 4: |
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throw new BadUsernameOrPassword('The data in the user name or password is malformed'); |
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case 5: |
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throw new NotAuthorized('The Client is not authorized to connect'); |
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default: |
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throw new GenericError(sprintf( |
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'Reserved for future use or error not implemented yet (Error code: %d)', |
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$this->connectReturnCode |
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)); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function performSpecialActions(ClientInterface $client, WritableContentInterface $originalRequest): bool |
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{ |
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$client |
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->setConnected(true) |
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->updateLastCommunication(); |
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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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1 |
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public function getOriginControlPacket(): int |
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{ |
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1 |
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return Connect::getControlPacketValue(); |
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} |
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} |
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unreal4u /
mqtt
