/// <summary>
/// Read from the given stream and send the data over a data connection
/// </summary>
private void SendData(Stream stream)
{
try {
bool passive = (dataPort == null);
using (Socket socket = OpenDataConnection()) {
if (socket == null)
{
return;
}
IPEndPoint remote = (IPEndPoint)socket.RemoteEndPoint;
IPEndPoint local = (IPEndPoint)socket.LocalEndPoint;
if (logHandler != null)
{
logHandler.NewDataConnection(remote, local, passive);
}
try {
while (true)
{
int bytes = stream.Read(dataBuffer, 0, dataBufferSize);
if (bytes <= 0)
{
break;
}
if (transferDataType == DataType.IMAGE || noAsciiConv)
{
// TYPE I -> just pass through
socket.Send(dataBuffer, bytes, SocketFlags.None);
}
else
{
// TYPE A -> convert local EOL style to CRLF
// if the buffer ends with a potential partial EOL,
// try to read the rest of the EOL
// (i assume that the EOL has max. two bytes)
if (localEolBytes.Length == 2 &&
dataBuffer[bytes - 1] == localEolBytes[0])
{
if (stream.Read(dataBuffer, bytes, 1) == 1)
{
++bytes;
}
}
byte[] convBuffer = null;
int convBytes = ConvertAsciiBytes(dataBuffer, bytes, true, out convBuffer);
socket.Send(convBuffer, convBytes, SocketFlags.None);
}
}
// flush socket before closing (done by using-statement)
socket.Shutdown(SocketShutdown.Send);
Respond(226, "Transfer complete.");
} catch (Exception ex) {
Respond(500, ex);
return;
} finally {
if (logHandler != null)
{
logHandler.ClosedDataConnection(remote, local, passive);
}
}
}
} finally {
stream.Close();
}
}