/// <summary>
/// Constructor
/// </summary>
/// <param name="disconnect">DISCONNECT message received from client</param>
public ConnectionClosedRequestEventArgs(MqttMsgDisconnect disconnect)
{
Message = disconnect;
}
/// <summary>
/// Parse bytes for a DISCONNECT message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">MQTT Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>DISCONNECT message instance</returns>
public static MqttMsgDisconnect Parse(byte fixedHeaderFirstByte, MqttProtocolVersion protocolVersion, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
MqttMsgDisconnect msg = new MqttMsgDisconnect();
if (((protocolVersion == MqttProtocolVersion.Version_3_1_1) || (protocolVersion == MqttProtocolVersion.Version_5)) &&
((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_DISCONNECT_FLAG_BITS))
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
// get remaining length and allocate buffer
int remainingLength = DecodeVariableByte(channel);
// NOTE : remainingLength must be 0
if ((remainingLength != 0) && (protocolVersion == MqttProtocolVersion.Version_5))
{
// V5.0 specific
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
msg.ResonCode = (MqttReasonCode)buffer[index++];
int propSize = EncodeDecodeHelper.GetPropertySize(buffer, ref index);
propSize += index;
MqttProperty prop;
while (propSize > index)
{
prop = (MqttProperty)buffer[index++];
switch (prop)
{
case MqttProperty.SessionExpiryInterval:
// 4 bytes
msg.SessionExpiryInterval = EncodeDecodeHelper.DecodeUint(buffer, ref index);
break;
case MqttProperty.ReasonString:
// UTF8 encoded
msg.Reason = EncodeDecodeHelper.GetUTF8FromBuffer(buffer, ref index);
break;
case MqttProperty.UserProperty:
// UTF8 key value encoding, so 2 strings in a raw
string key = EncodeDecodeHelper.GetUTF8FromBuffer(buffer, ref index);
string value = EncodeDecodeHelper.GetUTF8FromBuffer(buffer, ref index);
msg.UserProperties.Add(new UserProperty(key, value));
break;
case MqttProperty.ServerReference:
// UTF8 encoded
msg.ServerReference = EncodeDecodeHelper.GetUTF8FromBuffer(buffer, ref index);
break;
default:
// non supported property
index = propSize;
break;
}
}
}
return(msg);
}
