public void UploadFileByBlocking(BacnetClient comm, BacnetAddress adr, BacnetObjectId object_id, string filename, Action <int> progress_action)
{
Cancel = false;
//open file
System.IO.FileStream fs = null;
try
{
fs = System.IO.File.OpenRead(filename);
}
catch (Exception ex)
{
throw new System.IO.IOException("Couldn't open file", ex);
}
try
{
int position = 0;
int count = comm.GetFileBufferMaxSize();
byte[] buffer = new byte[count];
while (count > 0 && !Cancel)
{
//read from disk
count = fs.Read(buffer, 0, count);
if (count < 0)
{
throw new System.IO.IOException("Couldn't read file");
}
else if (count == 0)
{
continue;
}
//write to device
if (!comm.WriteFileRequest(adr, object_id, ref position, count, buffer))
{
throw new System.IO.IOException("Couldn't write file");
}
//progress
if (count > 0)
{
position += count;
if (progress_action != null)
{
progress_action(position);
}
}
}
}
finally
{
fs.Close();
}
}
public void DownloadFileByBlocking(BacnetClient comm, BacnetAddress adr, BacnetObjectId object_id, string filename, Action <int> progress_action)
{
Cancel = false;
//open file
System.IO.FileStream fs = null;
try
{
fs = System.IO.File.OpenWrite(filename);
}
catch (Exception ex)
{
throw new System.IO.IOException("Couldn't open file", ex);
}
int position = 0;
uint count = (uint)comm.GetFileBufferMaxSize();
bool end_of_file = false;
byte[] buffer;
int buffer_offset;
try
{
while (!end_of_file && !Cancel)
{
//read from device
if (!comm.ReadFileRequest(adr, object_id, ref position, ref count, out end_of_file, out buffer, out buffer_offset))
{
throw new System.IO.IOException("Couldn't read file");
}
position += (int)count;
//write to file
if (count > 0)
{
fs.Write(buffer, buffer_offset, (int)count);
if (progress_action != null)
{
progress_action(position);
}
}
}
}
finally
{
fs.Close();
}
}
private static void OnAtomicReadFileRequest(BacnetClient sender, BacnetAddress adr, byte invoke_id, bool is_stream, BacnetObjectId object_id, int position, uint count, BacnetMaxSegments max_segments)
{
lock (m_lockObject)
{
try
{
if (object_id.Type != BacnetObjectTypes.OBJECT_FILE)
{
throw new Exception("File Reading on non file objects ... bah!");
}
else if (object_id.Instance != 0)
{
throw new Exception("Don't know this file");
}
//this is a test file for performance measuring
int filesize = m_storage.ReadPropertyValue(object_id, BacnetPropertyIds.PROP_FILE_SIZE); //test file is ~10mb
bool end_of_file = (position + count) >= filesize;
count = (uint)Math.Min(count, filesize - position);
int max_filebuffer_size = sender.GetFileBufferMaxSize();
if (count > max_filebuffer_size && max_segments > 0)
{
//create segmented message!!!
}
else
{
count = (uint)Math.Min(count, max_filebuffer_size); //trim
}
//fill file with bogus content
byte[] file_buffer = new byte[count];
byte[] bogus = new byte[] { (byte)'F', (byte)'I', (byte)'L', (byte)'L' };
for (int i = 0; i < count; i += bogus.Length)
{
Array.Copy(bogus, 0, file_buffer, i, Math.Min(bogus.Length, count - i));
}
//send
HandleSegmentationResponse(sender, adr, invoke_id, max_segments, (seg) =>
{
sender.ReadFileResponse(adr, invoke_id, seg, position, count, end_of_file, file_buffer);
});
}
catch (Exception)
{
sender.ErrorResponse(adr, BacnetConfirmedServices.SERVICE_CONFIRMED_ATOMIC_READ_FILE, invoke_id, BacnetErrorClasses.ERROR_CLASS_DEVICE, BacnetErrorCodes.ERROR_CODE_OTHER);
}
}
}
private static void handler_OnAtomicReadFileRequest(BacnetClient sender, BacnetAddress adr, byte invoke_id, bool is_stream, BacnetObjectId object_id, int position, uint count, BacnetMaxSegments max_segments)
{
lock (device)
{
BaCSharpObject File = device.FindBacnetObject(object_id);
if (File is BacnetFile)
{
try
{
BacnetFile f = (BacnetFile)File;
int filesize = (int)f.PROP_FILE_SIZE;
bool end_of_file = (position + count) >= filesize;
count = (uint)Math.Min(count, filesize - position);
int max_filebuffer_size = sender.GetFileBufferMaxSize();
if (count > max_filebuffer_size && max_segments > 0)
{
//create segmented message!!!
}
else
{
count = (uint)Math.Min(count, max_filebuffer_size); //trim
}
byte[] file_buffer = f.ReadFileBlock(position, (int)count);
sender.ReadFileResponse(adr, invoke_id, sender.GetSegmentBuffer(max_segments), position, count, end_of_file, file_buffer);
}
catch (Exception)
{
sender.ErrorResponse(adr, BacnetConfirmedServices.SERVICE_CONFIRMED_ATOMIC_READ_FILE, invoke_id, BacnetErrorClasses.ERROR_CLASS_DEVICE, BacnetErrorCodes.ERROR_CODE_OTHER);
}
}
else
{
sender.ErrorResponse(adr, BacnetConfirmedServices.SERVICE_CONFIRMED_ATOMIC_READ_FILE, invoke_id, BacnetErrorClasses.ERROR_CLASS_DEVICE, BacnetErrorCodes.ERROR_CODE_OTHER);
}
}
}
/// <summary>
/// This method is based upon increasing the MaxInfoFrames in the MSTP.
/// In Bacnet/IP this will have bad effect due to the retries
/// </summary>
public void DownloadFileByAsync(BacnetClient comm, BacnetAddress adr, BacnetObjectId object_id, string filename, Action <int> progress_action)
{
Cancel = false;
//open file
System.IO.FileStream fs = null;
try
{
fs = System.IO.File.OpenWrite(filename);
}
catch (Exception ex)
{
throw new System.IO.IOException("Couldn't open file", ex);
}
uint max_count = (uint)comm.GetFileBufferMaxSize();
BacnetAsyncResult[] transfers = new BacnetAsyncResult[50];
byte old_max_info_frames = comm.Transport.MaxInfoFrames;
comm.Transport.MaxInfoFrames = 50; //increase max_info_frames so that we can occupy line more. This might be against 'standard'
try
{
int position = 0;
bool eof = false;
while (!eof && !Cancel)
{
//start many async transfers
for (int i = 0; i < transfers.Length; i++)
{
transfers[i] = (BacnetAsyncResult)comm.BeginReadFileRequest(adr, object_id, position + i * (int)max_count, max_count, false);
}
//wait for all transfers to finish
int current = 0;
int retries = comm.Retries;
while (current < transfers.Length)
{
if (!transfers[current].WaitForDone(comm.Timeout))
{
if (--retries > 0)
{
transfers[current].Resend();
continue;
}
else
{
throw new System.IO.IOException("Couldn't read file");
}
}
retries = comm.Retries;
uint count;
byte[] file_buffer;
int file_buffer_offset;
Exception ex;
comm.EndReadFileRequest(transfers[current], out count, out position, out eof, out file_buffer, out file_buffer_offset, out ex);
transfers[current] = null;
if (ex != null)
{
throw ex;
}
if (count > 0)
{
//write to file
fs.Position = position;
fs.Write(file_buffer, file_buffer_offset, (int)count);
position += (int)count;
if (progress_action != null)
{
progress_action(position);
}
}
current++;
}
}
}
finally
{
fs.Close();
comm.Transport.MaxInfoFrames = old_max_info_frames;
}
}
