async Task EstablishMqttConnectionAsync(ConnectionPref pref)
{
//configure options
IMqttClientOptions options = new MqttClientOptionsBuilder()
.WithClientId(_mqttPref.Id.ToString())
.WithTcpServer(_mqttPref.HostAdress, _mqttPref.PortNumber)
// .WithCredentials("bud", "%spencer%")
.WithCleanSession()
.Build();
//Handlers
_clientMqtt.UseConnectedHandler(async e =>
{
_eventBus?.Print($"Connected successfully with MQTT Brokers.");
//Subscribe to topic
await _clientMqtt.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic("RemoteSrvrData/#").Build());
});
_clientMqtt.UseDisconnectedHandler(e =>
{
_eventBus?.Print($"Disconnected from MQTT Brokers. Reason:{e.Reason.ToString()}");
});
_clientMqtt.UseApplicationMessageReceivedHandler(async e => { await _eventBus?.OnMqqtEvent(e); });
//actually connect
await _clientMqtt.ConnectAsync(options);
}
public async Task EstablishConnectionAsync(ConnectionPref pref, MqttConnectionPref mqttPref)
{
_tcpClient ??= new TcpClient();
if (!_tcpClient.Connected)
{
try
{
_pref = pref;
_mqttPref = mqttPref;
_eventBus?.Print("Establishing connection");
await _tcpClient.ConnectAsync(_pref.HostNameOrAdress, _pref.PortNumber);
NetworkStream stream = _tcpClient.GetStream();
_sReader = new StreamReader(stream, Encoding.ASCII);
_sWriter = new StreamWriter(stream, Encoding.ASCII)
{
AutoFlush = true
};
await _sWriter.WriteLineAsync(_pref.UserName);
await _sWriter.WriteLineAsync(_pref.Id.ToString());
await EstablishMqttConnectionAsync(_pref);
WaitForData();
IsConnected = _tcpClient.Connected;
}
catch (Exception ex)
{
_eventBus?.Error(ex.Message);
IsConnected = false;
}
}
}
