public void StartReceive(IPAddress Address, int Port, string FilePath)
{
// store destination path
_filePath = FilePath;
// initialize the file socket
_clientSocket = new TcpSocket();
// use the FileDataReceived callback
_clientSocket.DataReceived += new TcpSocket.DataReceivedDelegate(OnDataReceived);
_clientSocket.Connected += new TcpSocket.ConnectedDelegate(OnConnected);
_clientSocket.DisConnected += new TcpSocket.DisConnectedDelegate(OnDisConnected);
_clientSocket.Connect(Address, Port);
if (!_clientSocket.IsConnected)
{
// connect attempt failed
throw new CryptoSocketException("DtmFileTransfer:StartReceive", "Could not connect to the remote host!", new SocketException((int)SocketError.ConnectionAborted));
}
else
{
// create the temp file note: is WriteThrough more secure here?
_tempPath = Path.Combine(Path.GetDirectoryName(_filePath), Path.GetFileNameWithoutExtension(Path.GetRandomFileName()) + ".tmp");
using (new FileStream(_tempPath, FileMode.Create, FileAccess.Write, FileShare.Read)) { }
// set to hidden to avoid cross process errors
File.SetAttributes(_tempPath, File.GetAttributes(_tempPath) | FileAttributes.Hidden);
_clientSocket.ReceiveBufferSize = m_bufferSize;
_clientSocket.SendBufferSize = m_bufferSize;
// start receiving
_clientSocket.ReceiveAsync();
_clientSocket.ReceiveTimeout = -1;
// connection established
_isConnected = true;
}
}
private async Task ReceiveData(byte[] buffer, List <byte> backlog, CancellationToken token)
{
var byteCount = await tcpSocket.ReceiveAsync(buffer, 0, MAXIMUM_BUFFER_SIZE);
if (byteCount == 0) // The remote has shutdown the socket.
{
throw new TcpSocketIsClosedException();
}
byte[] data = new byte[byteCount];
Array.Copy(buffer, 0, data, 0, byteCount);
backlog.AddRange(data);
}