private void DecoderOnMessageDecoded(object sender, MessageDecodedEventArgs eventArgs)
{
if (eventArgs.Message != null)
{
try
{
if (eventArgs.Message is DataFrame dataFrame && dataFrame.Items != null)
{
DataPointValue[] files = dataFrame.Items.Where(i => i is OPCUAFile)
.ToArray();
foreach (OPCUAFile file in files)
{
dataFrame.Items.Remove(file);
FileReceived?.Invoke(this, new FileReceivedEventArgs(file, eventArgs.Topic, dataFrame.NetworkMessageHeader.PublisherID.Value));
}
if (dataFrame.Items.Count > 0)
{
MessageReceived?.Invoke(this, eventArgs);
}
}
else if (eventArgs.Message is MetaFrame metaFrame)
{
MetaMessageReceived?.Invoke(this, eventArgs);
}
else
{
UnknownMessageReceived?.Invoke(this, eventArgs);
}
}
private void WebSocket_MessageReceived(object sender, MessageReceivedEventArgs e)
{
ICommandResponse response;
if (TryGetCommandResponse(e.Message, out response))
{
HandleResponse(response);
return;
}
IEvent evnt;
if (TryGetEvent(e.Message, out evnt))
{
HandleEvent(evnt);
return;
}
UnknownMessageReceived?.Invoke(e.Message);
}
protected virtual void OnUnknownMessageReceived(string data)
{
UnknownMessageReceived?.Invoke(this, data);
}
private Task Receiver(NetworkStream stream, CancellationTokenSource cts)
{
return(new Task(() =>
{
Trace.TraceInformation("Receiver task starting...");
//stream.ReadTimeout = 5000;
try
{
while (true)
{
if (cts.Token.IsCancellationRequested)
{
break;
}
DataPackage dataPackage = DataPackage.FromStream(stream);
switch (dataPackage.Type)
{
case MessageType.SYSTEM_LOGIN_OK:
{
LoginInfo info = Serializer.Deserialize <LoginInfo>(dataPackage.Data);
Name = info.Name;
LoginOK?.Invoke(this, info);
}
break;
case MessageType.SYSTEM_LOGIN_FAILED:
{
LoginInfo info = Serializer.Deserialize <LoginInfo>(dataPackage.Data);
LoginFailed?.Invoke(this, info);
}
break;
case MessageType.SYSTEM_JOIN_ROOM_OK:
{
RoomInfo roomInfo = Serializer.Deserialize <RoomInfo>(dataPackage.Data);
JoinedInRoom?.Invoke(this, roomInfo);
}
break;
case MessageType.SYSTEM_LEAVE_ROOM_OK:
{
RoomInfo roomInfo = Serializer.Deserialize <RoomInfo>(dataPackage.Data);
LeavedFromRoom?.Invoke(this, roomInfo);
}
break;
case MessageType.CLIENT_MESSAGE:
{
Message message = Serializer.Deserialize <Message>(dataPackage.Data);
MessageReceived?.Invoke(this, message);
}
break;
case MessageType.CLIENT_IMAGE_MESSAGE:
{
var imageMessage = Serializer.Deserialize <ImageMessage>(dataPackage.Data);
ImageMessageReceived?.Invoke(this, imageMessage);
}
break;
case MessageType.CLIENT_FILE_MESSAGE:
{
var fileMessage = Serializer.Deserialize <FileMessage>(dataPackage.Data);
FileMessageReived?.Invoke(this, fileMessage);
}
break;
case MessageType.SYSTEM_FILE_TRANSFER:
{
var fileMessage = Serializer.Deserialize <FileMessage>(dataPackage.Data);
FileReived?.Invoke(this, fileMessage);
}
break;
case MessageType.SYSTEM_MESSAGE_OK:
{
Receipt receipt = Serializer.Deserialize <Receipt>(dataPackage.Data);
MessageArrivied?.Invoke(this, receipt);
}
break;
case MessageType.SYSTEM_MESSAGE:
{
var message = Encoding.UTF8.GetString(dataPackage.Data);
SystemMessageReceived?.Invoke(this, message);
break;
}
case MessageType.CLIENT_LOGOUT:
{
Name = null;
LogoutOK?.Invoke(this, null);
goto default;
}
default:
UnknownMessageReceived?.Invoke(this, new SystemMessageEventArgs(dataPackage.Type, dataPackage.Data));
break;
}
}
}
catch (EndOfStreamException ex)
{
Debug.WriteLine($"Client {Name} Receiver: {ex.Message}");
}
catch (IOException ex)
{
if (ex.InnerException is SocketException)
{
SocketExceptionRaising?.Invoke(this, (SocketException)ex.InnerException);
}
else
{
Trace.TraceInformation($"{ex}");
}
}
ReceiverTaskExited?.Invoke(this, null);
Trace.TraceInformation("Receiver task exited");
}, TaskCreationOptions.LongRunning));
}