private async void ReceiveCloudToDeviceMessagesAsync()
{
Debug.WriteLine("\nReceiving cloud to device messages from service");
EnsureDeviceClient();
while (IsListening)
{
await Task.Delay(1000);
Message receivedMessage = await deviceClient.ReceiveAsync();
if (receivedMessage == null)
{
continue;
}
var messageBytes = receivedMessage.GetBytes();
var messageString = Encoding.ASCII.GetString(messageBytes);
//Fire the general message received event
NotifyMessageReceived(receivedMessage, messageBytes, messageString);
//Attempt to parse it into a CommandMessage
CloudToDeviceMessage commandMessage = null;
try
{
commandMessage = JsonConvert.DeserializeObject <CloudToDeviceMessage>(messageString);
}
catch
{
}
//if (serializationService.TryDeserialize<CommandMessage>(messageString, out commandMessage))
if (commandMessage != null)
{
string commandString = commandMessage.Command.Trim().ToLower();
string payload = commandMessage.Parameters;
switch (commandString)
{
case "ping":
PingCommandReceived?.Invoke(null, new PingCommandEventArgs(receivedMessage, messageBytes, messageString, commandMessage, payload));
break;
case "brew":
BrewCommandReceived?.Invoke(null, new BrewCommandEventArgs(receivedMessage, messageBytes, messageString, commandMessage, payload));
break;
//case "takepicture":
// int camera;
// if(int.TryParse(commandMessage.Parameters,out camera))
// {
// TakePictureCommandReceived?.Invoke(null, new TakePictureCommandEventArgs(receivedMessage, messageBytes, messageString, commandMessage, camera));
// }
// else
// {
// NotifyBadMessageReceived(receivedMessage, messageBytes, messageString);
// }
// break;
//case "answer":
// string answer = commandMessage.Parameters.Trim();
// if(!String.IsNullOrWhiteSpace(answer))
// {
// AnswerCommandReceived?.Invoke(null, new AnswerCommandEventArgs(receivedMessage, messageBytes, messageString, commandMessage, answer));
// }
// else
// {
// NotifyBadMessageReceived(receivedMessage, messageBytes, messageString);
// }
// break;
default:
// Send a generic event about the message being received
//NotifyMessageReceived(receivedMessage, messageBytes, messageString);
UnknownCommandReceived?.Invoke(null, new CommandEventArgs(receivedMessage, messageBytes, messageString, commandMessage, payload));
break;
}
}
else
{
NotifyBadMessageReceived(receivedMessage, messageBytes, messageString);
}
// Go ahead and "complete" every message, even if we don't know we've processed it
// We'll take the "UDP" approach for now. Consider doing this only after you know a message
// has been successfully processed in the future...
await deviceClient.CompleteAsync(receivedMessage);
}
}
protected virtual void OnUnknownCommandReceived(MessageInfo message)
{
UnknownCommandReceived?.Invoke(this, new MessageEventArgs(message));
}
protected virtual void OnUnknownCommandReceived(NodeEventArgs args)
{
UnknownCommandReceived?.Invoke(this, args);
}
