commonMain.mqtt.packets.mqttv4.MQTT4Pubrel.kt Maven / Gradle / Ivy
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Kotlin Multiplatform MQTT client & embeddable and standalone broker
package mqtt.packets.mqttv4
import mqtt.MQTTException
import mqtt.packets.MQTTControlPacketType
import mqtt.packets.MQTTDeserializer
import mqtt.packets.mqtt.MQTTPubrel
import mqtt.packets.mqttv5.ReasonCode
import socket.streams.ByteArrayInputStream
import socket.streams.ByteArrayOutputStream
public class MQTT4Pubrel(
packetId: UInt
) : MQTTPubrel(packetId), MQTT4Packet {
override fun toByteArray(): UByteArray {
val outStream = ByteArrayOutputStream()
outStream.write2BytesInt(packetId)
return outStream.wrapWithFixedHeader(MQTTControlPacketType.PUBREL, 2)
}
public companion object : MQTTDeserializer {
override fun fromByteArray(flags: Int, data: UByteArray): MQTT4Pubrel {
checkFlags(flags)
val inStream = ByteArrayInputStream(data)
val packetId = inStream.read2BytesInt()
return MQTT4Pubrel(packetId)
}
override fun checkFlags(flags: Int) {
if (flags.flagsBit(0) != 0 ||
flags.flagsBit(1) != 1 ||
flags.flagsBit(2) != 0 ||
flags.flagsBit(3) != 0
)
throw MQTTException(ReasonCode.MALFORMED_PACKET)
}
}
}