public async Task HandleClientDisconnectedAsync(MqttServerClientDisconnectedEventArgs eventArgs)
{
var message = new MqttDisconnectMessage()
{
ClientId = eventArgs.ClientId,
};
if (string.Equals(message.ClientId, _configuration.GetSection("MQTT").GetSection("MqttClientEnactorName").Value) == false)
{
await _endpoint.Request <HttpStatusCode>(message).ConfigureAwait(false);
}
}
public void BasicSerialization()
{
// Message Specs________________
// <E0><00>
var expected = new[]
{
(byte)0xE0,
(byte)0x00
};
MqttDisconnectMessage msg = new MqttDisconnectMessage();
Console.WriteLine(msg);
byte[] actual = MessageSerializationHelper.GetMessageBytes(msg);
Assert.Equal <int>(expected.Length, actual.Length);
Assert.Equal <byte>(expected[0], actual[0]); // first header byte
Assert.Equal <byte>(expected[1], actual[1]); // message size byte
}
/// <summary>
/// Parse bytes for a DISCONNECT message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>DISCONNECT message instance</returns>
public static MqttDisconnectMessage Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
MqttDisconnectMessage msg = new MqttDisconnectMessage();
if (protocolVersion == MqttConnectMessage.PROTOCOL_VERSION_V3_1_1)
{
// [v3.1.1] check flag bits
if ((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_DISCONNECT_FLAG_BITS)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
}
// get remaining length and allocate buffer
int remainingLength = MqttMessage.DecodeRemainingLength(channel);
// NOTE : remainingLength must be 0
return(msg);
}