public bool Authenticate(ConnectMessage msg)
{
return(Authenticate(msg.Username, msg.Password));
}
internal override MqttMessage Decode(byte[] message)
{
MqttMessage connectMessage = new ConnectMessage();
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);
index = 0;
int protocolNameLength = ((buffer[index++] << 8) & 0xFF00);
protocolNameLength |= buffer[index++];
byte[] protocolName = new byte[protocolNameLength];
try
{
Buffer.BlockCopy(buffer, index, protocolName, 0, protocolNameLength);
}
catch (Exception ex)
{
Trace.TraceError(ex.Message);
}
_protocolName = Encoding.UTF8.GetString(protocolName);
//if (Encoding.UTF8.GetString(protocolName) != this.ProtocolName)
//{
//fault wrong protocol
//}
index += protocolNameLength;
this.ProtocolVersion = (int)buffer[index++];
//if (this.ProtocolVersion != (int)buffer[index++])
//{
// //fault wrong version
//}
byte connectFlags = buffer[index++];
this.usernameFlag = ((connectFlags >> 0x07) == 0x01) ? true : false;
this.passwordFlag = ((connectFlags & 0x64) >> 0x06 == 0x01) ? true : false;
this.WillRetain = ((connectFlags & 0x032) >> 0x05 == 0x01) ? true : false;
this.WillQualityOfServiceLevel = (QualityOfServiceLevelType)Convert.ToByte(((connectFlags & 0x1F) >> 0x03) | (connectFlags & 0x08 >> 0x03));
this.WillFlag = ((connectFlags & 0x04) >> 0x02 == 0x01) ? true : false;
this.CleanSession = ((connectFlags & 0x02) >> 0x01 == 0x01) ? true : false;
int keepAliveSec = ((buffer[index++] << 8) & 0xFF00);
keepAliveSec |= buffer[index++];
this.KeepAlive = keepAliveSec;
int length = 0;
this.ClientId = ByteContainer.DecodeString(buffer, index, out length);
index += length;
if (this.WillFlag)
{
this.WillTopic = ByteContainer.DecodeString(buffer, index, out length);
index += length;
this.WillMessage = ByteContainer.DecodeString(buffer, index, out length);
index += length;
}
if (this.usernameFlag)
{
this.Username = ByteContainer.DecodeString(buffer, index, out length);
index += length;
}
if (this.passwordFlag)
{
this.Password = ByteContainer.DecodeString(buffer, index, out length);
index += length;
}
return(connectMessage);
}
public bool Authenticate(byte[] message)
{
ConnectMessage msg = (ConnectMessage)MqttMessage.DecodeMessage(message);
return(Authenticate(msg.Username, msg.Password));
}
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);
}
