// Handle TCPIP server commands
#region CommandServer
/// <summary>
/// Process a request from the TCPIP command server port
/// </summary>
private async Task <string> CommandServerProcessRequestAsync(string request)
{
try
{
UriArgParser args = new UriArgParser(request);
switch (args.Request)
{
case "loglevel":
return(ProcessChangeLogLevel(args));
case "recording":
return(await ProcessSetRecording(args));
case "srbset":
return(ProcessSrbSet(args));
case "streamset":
return(ProcessStreamSet(args));
default:
break;
}
}
catch (Exception e)
{
Logger.AddLog(new LogEventArgs(this, "CommandServerProcessRequest", e, LogLevel.WARN));
}
Logger.AddLog(new LogEventArgs(this, "CommandServerProcessRequest", $"Invalid request {request}", LogLevel.WARN));
return($"NAK?response=Invalid request&time={DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()}\n");
}
/// <summary>
/// Process set recording command
/// </summary>
private async Task <string> ProcessSetRecording(UriArgParser args)
{
try
{
var enable = bool.Parse(args.GetArg("enable"));
var fileName = args.GetArg("filename");
var formatType = args.GetArg("format");
if (BrainflowBoard == null)
{
return($"NAK?response=Board is not reading data.");
}
if (enable)
{
if (FileWriter.IsLogging)
{
return($"NAK?response=You must close the current recording file before starting a new one.");
}
FileWriterType format = FileWriterType.Bdf;
switch (formatType)
{
case "txt":
format = FileWriterType.OpenBciTxt;
break;
case "bdf":
format = FileWriterType.Bdf;
break;
}
var recordingDir = ConfigurationManager.AppSettings.Get("defaultDir");
var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), recordingDir);
await FileWriter.StartWritingToFileAsync(path, fileName, BrainflowBoard.BoardId, BrainflowBoard.SampleRate, format, new FileHeaderInfo()
{
SessionName = fileName
});
return($"ACK?response=File {Path.GetFileName(FileWriter.FileName)} started.");
}
else
{
if (FileWriter != null && !FileWriter.IsLogging)
{
return($"NAK?response=No recording in progress.");
}
await FileWriter.StopWritingToFileAsync();
return($"ACK?response=Recording stopped.");
}
}
catch (Exception)
{
return($"NAK?response=Invalid parameters");
}
}
/// <summary>
/// Process change log level command
/// </summary>
private string ProcessChangeLogLevel(UriArgParser args)
{
Logger.LogLevelDisplay = (LogLevel)int.Parse(args.GetArg("level"));
Logger.AddLog(new LogEventArgs(this, "CommandServerProcessRequest", $"Process request to set log level to {Logger.LogLevelDisplay}.", LogLevel.INFO));
if (LoggingWindow != null)
{
LoggingWindow.ChangeLogLevel();
}
return($"ACK?response=Log level set to {Logger.LogLevelDisplay}.");
}
private string ProcessStreamSet(UriArgParser args)
{
try
{
var enable = bool.Parse(args.GetArg("enable"));
BrainflowBoard.RequestEnableStreaming(enable);
return($"ACK?response=Request enable stream {enable}");
}
catch (Exception e)
{
Logger.AddLog(new LogEventArgs(this, "ProcessStreamSet", e, LogLevel.ERROR));
}
return($"NAK?response=bad arguments");
}
private string ProcessSrbSet(UriArgParser args)
{
try
{
var enable = bool.Parse(args.GetArg("enable"));
var board = int.Parse(args.GetArg("board"));
BrainflowBoard.RequestSetSrb1(board, enable);
return($"ACK?response=Request set SRB1 {enable}");
}
catch (Exception e)
{
Logger.AddLog(new LogEventArgs(this, "ProcessSrbSet", e, LogLevel.ERROR));
}
return($"NAK?response=bad arguments");
}