public MqttClient(string server, string clientId)
{
Server = server;
ClientId = clientId;
conn = new MqttConnection();
conn.Recv += DecodeMessage;
connResetEvent = new AutoResetEvent(false);
}
public MqttClient(string server, string clientId = "")
{
Server = server;
if (string.IsNullOrEmpty(clientId))
{
clientId = Guid.NewGuid().ToString("N");
}
ClientId = clientId;
conn = new MqttConnection();
conn.Recv += DecodeMessage;
connResetEvent = new AutoResetEvent(false);
}
void DecodeMessage(byte[] buffer)
{
var msg = MqttMessage.DecodeMessage(buffer);
Debug.WriteLine("onRecv:{0}", msg.FixedHeader.MessageType);
switch (msg.FixedHeader.MessageType)
{
case MessageType.CONNACK:
var connAckMsg = (ConnAckMessage)msg;
if (connAckMsg.ReturnCode == MqttConnectReturnCode.BrokerUnavailable ||
connAckMsg.ReturnCode == MqttConnectReturnCode.IdentifierRejected ||
connAckMsg.ReturnCode == MqttConnectReturnCode.UnacceptedProtocolVersion ||
connAckMsg.ReturnCode == MqttConnectReturnCode.NotAuthorized ||
connAckMsg.ReturnCode == MqttConnectReturnCode.BadUsernameOrPassword)
{
ConnectionState = ConnectionState.Disconnecting;
Dispose();
conn = null;
ConnectionState = ConnectionState.Disconnected;
}
else
{
ConnectionState = ConnectionState.Connected;
}
connResetEvent.Set();
break;
case MessageType.PUBLISH:
var pubMsg = (PublishMessage)msg;
string topic = pubMsg.TopicName;
var data = pubMsg.Payload;
if (pubMsg.FixedHeader.Qos == Qos.AtLeastOnce)
{
var ackMsg = new PublishAckMessage();
ackMsg.MessageIdentifier = pubMsg.MessageIdentifier;
conn.SendMessage(ackMsg);
}
OnMessageReceived(topic, data);
break;
case MessageType.PUBACK:
var pubAckMsg = (PublishAckMessage)msg;
Debug.WriteLine("PUBACK MessageIdentifier:" + pubAckMsg.MessageIdentifier);
break;
case MessageType.PUBREC:
break;
case MessageType.PUBREL:
break;
case MessageType.PUBCOMP:
break;
case MessageType.SUBSCRIBE:
break;
case MessageType.SUBACK:
break;
case MessageType.UNSUBSCRIBE:
break;
case MessageType.UNSUBACK:
break;
case MessageType.PINGREQ:
conn.SendMessage(new PingRespMessage());
break;
case MessageType.DISCONNECT:
Disconnect();
break;
}
}