internal override MqttMessage Decode(byte[] message)
{
UnsubscribeMessage unsubscribeMessage = new UnsubscribeMessage();
int index = 0;
byte fixedHeader = message[index];
base.DecodeFixedHeader(fixedHeader);
int remainingLength = base.DecodeRemainingLength(message);
int temp = remainingLength; //increase the fixed header size
do
{
index++;
temp = temp / 128;
} while (temp > 0);
index++;
byte[] buffer = new byte[remainingLength];
Buffer.BlockCopy(message, index, buffer, 0, buffer.Length);
ushort messageId = (ushort)((buffer[0] << 8) & 0xFF00);
messageId |= buffer[1];
this.MessageId = messageId;
while (index < buffer.Length)
{
int length = 0;
string topic = ByteContainer.DecodeString(buffer, index, out length);
index += length;
this.Topics.Add(topic);
}
return(unsubscribeMessage);
}
public static MqttMessage DecodeMessage(byte[] message)
{
byte fixedHeader = message[0];
byte msgType = (byte)(fixedHeader >> 0x04);
MqttMessageType messageType = (MqttMessageType)msgType;
MqttMessage mqttMessage = null;
switch (messageType)
{
case MqttMessageType.CONNECT:
mqttMessage = new ConnectMessage();
break;
case MqttMessageType.CONNACK:
mqttMessage = new ConnectAckMessage();
break;
case MqttMessageType.PUBLISH:
mqttMessage = new PublishMessage();
break;
case MqttMessageType.PUBACK:
mqttMessage = new PublishAckMessage();
break;
case MqttMessageType.PUBREC:
mqttMessage = new PublishAckMessage();
break;
case MqttMessageType.PUBREL:
mqttMessage = new PublishAckMessage();
break;
case MqttMessageType.PUBCOMP:
mqttMessage = new PublishAckMessage();
break;
case MqttMessageType.SUBSCRIBE:
mqttMessage = new SubscribeMessage();
break;
case MqttMessageType.SUBACK:
mqttMessage = new SubscriptionAckMessage();
break;
case MqttMessageType.UNSUBSCRIBE:
mqttMessage = new UnsubscribeMessage();
break;
case MqttMessageType.UNSUBACK:
mqttMessage = new UnsubscribeAckMessage();
break;
case MqttMessageType.PINGREQ:
mqttMessage = new PingRequestMessage();
break;
case MqttMessageType.PINGRESP:
mqttMessage = new PingResponseMessage();
break;
case MqttMessageType.DISCONNECT:
mqttMessage = new DisconnectMessage();
break;
default:
throw new InvalidOperationException("Unknown message type.");
}
mqttMessage.Decode(message);
return(mqttMessage);
}