private void Tox_OnFileChunkRequested(object sender, ToxEventArgs.FileRequestChunkEventArgs e)
{
var transfer = FindTransfer(e.FriendNumber, e.FileNumber);
Stream stream = null;
if (transfer == null || !_transfers.TryGetValue(transfer, out stream))
{
Debugging.Write("Chunk requested for a transfer we don't know about, ignoring");
return;
}
if (e.Length == 0)
{
Debugging.Write("Transfer finished");
//time to clean up
RemoveTransfer(transfer, false);
//let's be nice and send an empty chunk to let our friend know we're done sending the file
_tox.FileSendChunk(e.FriendNumber, e.FileNumber, e.Position, new byte[0]);
return;
}
if (stream.Position != e.Position)
{
Debugging.Write("Position doesn't equal ours, rewinding");
try { stream.Seek(e.Position, SeekOrigin.Begin); }
catch (Exception ex)
{
Debugging.Write("Error while seeking in stream, exception: " + ex.ToString());
return; //TODO: should probably cancel the transfer here
}
transfer.TransferredBytes = e.Position;
}
byte[] buffer = new byte[e.Length];
try { stream.Read(buffer, 0, buffer.Length); }
catch (Exception ex)
{
Debugging.Write("Error while reading from stream, exception: " + ex.ToString());
return; //TODO: should probably cancel the transfer here
}
var error = ToxErrorFileSendChunk.Ok;
if (!_tox.FileSendChunk(e.FriendNumber, e.FileNumber, e.Position, buffer, out error))
{
Debugging.Write("Failed to send chunk: " + error);
}
else
{
transfer.TransferredBytes += e.Length;
}
}
public bool SendNextChunk(long position, int chunk_size)
{
if (_stream == null)
{
_stream = new FileStream(Path, FileMode.Open);
}
byte[] buffer = new byte[chunk_size];
long remaining = FileSize - position;
if (remaining >= chunk_size)
{
if (_stream.Read(buffer, 0, chunk_size) == 0)
{
Kill(true);
return(false);
}
var error = ToxErrorFileSendChunk.Ok;
if (!Tox.FileSendChunk(FriendNumber, FileNumber, position, buffer, out error))
{
_stream.Position -= chunk_size;
Debug.WriteLine("Could not send data, rewinding the stream");
return(false);
}
Debug.WriteLine(string.Format("Data sent: {0} bytes", buffer.Length));
}
/*else
* {
* buffer = new byte[remaining];
*
* if (_stream.Read(buffer, 0, (int)remaining) == 0)
* {
* Kill(true);
* return false;
* }
*
* Tox.FileSendData(FriendNumber, FileNumber, buffer);
* Debug.WriteLine(string.Format("Sent the last chunk of data: {0} bytes", buffer.Length));
*
* Kill(true);
* }*/
double value = (double)remaining / (double)FileSize;
Progress = 100 - (int)(value * 100);
return(true);
}
public void TestToxFileTransfer()
{
byte[] fileData = new byte[0xBEEEF];
byte[] receivedData = new byte[0xBEEEF];
new Random().NextBytes(fileData);
string fileName = "testing.dat";
bool fileReceived = false;
_tox2.OnFileSendRequestReceived += (sender, args) =>
{
if (fileName != args.FileName)
{
Assert.Fail("Filenames do not match");
}
if (args.FileSize != fileData.Length)
{
Assert.Fail("File lengths do not match");
}
var error2 = ToxErrorFileControl.Ok;
bool result = _tox2.FileControl(args.FriendNumber, args.FileNumber, ToxFileControl.Resume);
if (!result || error2 != ToxErrorFileControl.Ok)
{
Assert.Fail("Failed to send file control, error: {0}, result: {1}", error2, result);
}
};
var error = ToxErrorFileSend.Ok;
var fileInfo = _tox1.FileSend(0, ToxFileKind.Data, fileData.Length, fileName, out error);
if (error != ToxErrorFileSend.Ok)
{
Assert.Fail("Failed to send a file send request, error: {0}", error);
}
_tox1.OnFileChunkRequested += (sender, args) =>
{
byte[] data = new byte[args.Length];
Array.Copy(fileData, args.Position, data, 0, args.Length);
var error2 = ToxErrorFileSendChunk.Ok;
bool result = _tox1.FileSendChunk(args.FriendNumber, args.FileNumber, args.Position, data, out error2);
if (!result || error2 != ToxErrorFileSendChunk.Ok)
{
Assert.Fail("Failed to send chunk, error: {0}, result: {1}", error2, result);
}
};
_tox2.OnFileChunkReceived += (sender, args) =>
{
if (args.Position == fileData.Length)
{
fileReceived = true;
}
else
{
Array.Copy(args.Data, 0, receivedData, args.Position, args.Data.Length);
}
};
while (!fileReceived)
{
DoIterate();
}
if (!fileData.SequenceEqual(receivedData))
{
Assert.Fail("Original data is not equal to the data we received");
}
}