/* socket functions */
public async Task socket_onDataReceived(string message, Windows.Storage.Streams.DataWriter writer)
{
System.Diagnostics.Debug.WriteLine("received: " + message);
if (message.Equals("@welcome@"))
{
//if the message is from the ScaleHub we don't use DRP, just send back the scale's name.
await tcp.Send("TAUIOT@devname=" + PermanentData.Devname, writer);
return;
}
//getting and parsing the messsage
DRP msg;
try
{
msg = DRP.deserializeDRP(message);
}
catch
{
System.Diagnostics.Debug.WriteLine("non-DRP message received.");
return;
}
/* taking care of illegal messages */
if (msg.DevType == DRPDevType.RBPI)
{
DRP response = new DRP(DRPDevType.RBPI, "", PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.ILLEGAL);
await tcp.Send(response.ToString(), writer);
return;
}
if (msg.MessageType == DRPMessageType.DATA || msg.MessageType == DRPMessageType.HARDWARE_ERROR || msg.MessageType == DRPMessageType.IN_USE)
{
DRP response = new DRP(DRPDevType.RBPI, "", PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.ILLEGAL);
await tcp.Send(response.ToString(), writer);
return;
}
/* taking care of SCANNED messages */
if (msg.MessageType == DRPMessageType.SCANNED)
{
if (uhl == null)
{
//if there is no uhl, return HARDWARE_ERROR
DRP response = new DRP(DRPDevType.RBPI, msg.UserName, PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.HARDWARE_ERROR);
await tcp.Send(response.ToString(), writer);
System.Diagnostics.Debug.WriteLine("message sent: " + response.ToString());
return;
}
TempProfile profile = new TempProfile(msg.UserName, msg.Token, 0);
if (uhl.currentServedUser() == null)
{
//if no user uses the weight
uhl.StartUser(profile);
try
{
double w = uhl.getWeight(UserHardwareLinker.WEIGH_AVG);
DRP response = new DRP(DRPDevType.RBPI, msg.UserName, PermanentData.Serial, PermanentData.Devname, (float)w, 0, DRPMessageType.DATA);
//sending result to client
Task sendTask = tcp.Send(response.ToString(), writer);
System.Diagnostics.Debug.WriteLine("message sent: " + response.ToString());
//sending to cloud
Dictionary <string, string> jsend = new Dictionary <string, string>();
jsend.Add("username", msg.UserName);
jsend.Add("weigh", w.ToString());
Task cloudTask = null;
if (msg.UserName != null)
{
string sendToCloud = JsonConvert.SerializeObject(jsend);
cloudTask = AzureIoTHub.SendDeviceToCloudMessageAsync(sendToCloud);
}
await sendTask;
uhl.FinishUser();
if (cloudTask != null)
{
await cloudTask;
}
return;
}
catch
{
DRP response = new DRP(DRPDevType.RBPI, msg.UserName, PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.HARDWARE_ERROR);
await tcp.Send(response.ToString(), writer);
System.Diagnostics.Debug.WriteLine("message sent: " + response.ToString());
uhl.FinishUser();
return;
}
}
else
{
//if somwone already uses the weight
DRP response = new DRP(DRPDevType.RBPI, msg.UserName, PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.IN_USE);
await tcp.Send(response.ToString(), writer);
System.Diagnostics.Debug.WriteLine("message sent: " + response.ToString());
}
}
else if (msg.MessageType == DRPMessageType.ILLEGAL)
{
//never actually happens.
DRP response = new DRP(DRPDevType.RBPI, "", PermanentData.Serial, PermanentData.Devname, 0, 0, DRPMessageType.ACK);
await tcp.Send(response.ToString(), writer);
System.Diagnostics.Debug.WriteLine("message sent: " + response.ToString());
}
else
{
throw new Exception();
}
}
public void StartUser(TempProfile user)
{
currUser = user;
}
public void FinishUser()
{
currUser = null;
}
public UserHardwareLinker(GpioPin sck, GpioPin dout) : base(dout, sck)
{
currUser = null;
}