/// <summary>
/// Worker method for sending commands
/// </summary>
private async void CommandWorker()
{
while (!_commandCancellationToken.IsCancellationRequested)
{
CurrentCommand = null;
if (_queueSize == 0)
{
_queueEmptyEvent.Set();
}
try
{
if (_commandQueue.TryTake(out CurrentCommand, 10, _commandCancellationToken.Token))
{
_queueSize--;
Logger?.WriteLine("Writing Command: '" + CurrentCommand.CommandText.Replace('\r', '\'') + "'", OBDLogLevel.Verbose);
if (Connection.IsAsync)
{
await Connection.WriteAsync(Encoding.ASCII.GetBytes(CurrentCommand.CommandText));
}
else
{
Connection.Write(Encoding.ASCII.GetBytes(CurrentCommand.CommandText));
}
//wait for command to finish
_commandFinishedEvent.WaitOne();
}
}
catch (OperationCanceledException) { /*ignore, because it is thrown when the cancellation token is canceled*/ }
}
}
/// <summary>
/// Worker method for sending commands
/// </summary>
private async void CommandWorker()
{
while (!_commandCancellationToken.IsCancellationRequested)
{
try
{
CurrentCommand = null;
if (_queueSize == 0)
{
_queueEmptyEvent.Set();
}
try
{
if (_commandQueue.TryTake(out CurrentCommand, 10, _commandCancellationToken.Token))
{
Interlocked.Decrement(ref _queueSize);
Logger?.WriteLine("Writing Command: '" + CurrentCommand.CommandText.Replace('\r', '\'') + "'", OBDLogLevel.Verbose);
if (Connection.IsAsync)
{
await Connection.WriteAsync(Encoding.ASCII.GetBytes(CurrentCommand.CommandText));
}
else
{
// ReSharper disable once MethodHasAsyncOverload
Connection.Write(Encoding.ASCII.GetBytes(CurrentCommand.CommandText));
}
//wait for command to finish
if (CurrentCommand.WaitForResponse)
{
if (CurrentCommand.Timeout.HasValue)
{
_commandFinishedEvent.WaitOne(CurrentCommand.Timeout.Value);
}
else
{
_commandFinishedEvent.WaitOne();
}
}
}
}
catch (OperationCanceledException)
{
/*ignore, because it is thrown when the cancellation token is canceled*/
}
}
catch (Exception ex)
{
SocketError?.Invoke(this, new SocketErrorEventArgs(ex));
Connection.Dispose();
}
}
}
/// <summary>
/// Sends the command.
/// </summary>
/// <param name="command">command string</param>
/// <exception cref="System.InvalidOperationException">Not connected</exception>
protected virtual CommandResult SendCommand(string command)
{
if (!Connection.IsOpen)
{
throw new InvalidOperationException("Not connected");
}
command = PrepareCommand(command);
Logger?.WriteLine("Queuing Command: '" + command.Replace('\r', '\'') + "'", OBDLogLevel.Verbose);
QueuedCommand cmd = new QueuedCommand(command);
_queueEmptyEvent.Reset();
_queueSize++;
_commandQueue.Add(cmd);
return(cmd.CommandResult);
}
/// <summary>
/// Sends the command.
/// </summary>
/// <param name="command">command string</param>
/// <param name="waitForResponse"></param>
/// <exception cref="System.InvalidOperationException">Not connected</exception>
public virtual CommandResult SendCommand(string command, bool waitForResponse = true)
{
if (!Connection.IsOpen)
{
throw new InvalidOperationException("Not connected");
}
command = PrepareCommand(command);
Logger?.WriteLine("Queuing Command: '" + command.Replace('\r', '\'') + "'", OBDLogLevel.Verbose);
QueuedCommand cmd = new QueuedCommand(command, CommandTimeout)
{
WaitForResponse = waitForResponse
};
_queueEmptyEvent.Reset();
Interlocked.Increment(ref _queueSize);
_commandQueue.Add(cmd);
return(cmd.CommandResult);
}
