public SdcpResponse(SdcpResult result)
{
this.result = result;
}
public SdcpResponse(SdcpResult result, SdcpError error)
: this(result)
{
this.error = error;
}
public SdcpResponse Send(SdcpRequest request)
{
if (request == null)
{
throw new ArgumentException(Properties.Resources.MSG_OBJECT_NULL, nameof(request));
}
if (!this.client.Connected)
{
throw new InvalidOperationException(Properties.Resources.MSG_NOT_CONNECTED);
}
if (this.Closed)
{
throw new InvalidOperationException(Properties.Resources.MSG_CONNECTION_CLOSED);
}
if ((this.stream == null) || !this.stream.CanWrite || !this.stream.CanRead)
{
this.Closed = true;
throw new InvalidOperationException(Properties.Resources.MSG_STREAM_ERROR);
}
byte[] buffer = request.ToByteArray();
byte[] readBuffer = new byte[READ_BUFFER_SIZE];
// only one command is allowed to be sent at a time,
// prevent any other threads from making simultaneous calls to send
lock (this.lockObject) {
this.stream.Write(buffer, 0, buffer.Length);
int bytesRead = 0;
// We need to wait until the projector has processed the command
if (!this.waitHandle.WaitOne(this.commandDelay))
{
// wait timed out without beig set, so read the data from the port
do
{
// note: technically this can overflow, but projector should never send more than ~150 bytes
bytesRead = this.stream.Read(readBuffer, bytesRead, readBuffer.Length - bytesRead);
} while (this.stream.DataAvailable);
}
else
{
// wait handle was signaled, we're closing
return(new SdcpResponse(SdcpResult.ERROR, SdcpError.OtherCommError));
}
}
SdcpResponse response;
SdcpResult result = (SdcpResult)readBuffer[6];
if (result == SdcpResult.ERROR)
{
int len = readBuffer[9];
if (len > 0)
{
int error = (256 * readBuffer[10]) + readBuffer[11];
response = new SdcpResponse(result, (SdcpError)error);
}
else
{
response = new SdcpResponse(result, SdcpError.UnknownResponse);
}
}
else
{
response = new SdcpResponse(result);
if (request.Request == RequestType.Get)
{
int len = readBuffer[9];
byte[] data = new byte[len];
for (int i = 0; i < len; i++)
{
data[i] = readBuffer[10 + i];
}
response.Data = data;
}
}
return(response);
}
