private void ProcessReadRequest(IPEndPoint remoteEndPoint, TftpPacket requestPacket)
{
if (String.IsNullOrEmpty(requestPacket.FileName))
{
return; // TODO
}
if (requestPacket.Mode != TftpMode.Octet)
{
SendError(TftpError.IllegalOperation, "Transfer mode not supported", remoteEndPoint);
return;
}
var fileName = requestPacket.FileName.Replace('/', '\\');
if ('\\' == fileName[0])
{
fileName = fileName.Substring(1);
}
fileName = Path.Combine(_rootDirectory, fileName);
Console.WriteLine("Local file name: '{0}'", fileName);
_fileInfo = new FileInfo(fileName);
if (!_fileInfo.Exists)
{
SendError(TftpError.FileNotFound, "File not found", remoteEndPoint);
return;
}
var responsePacket = new TftpPacket(TftpPacketType.OptionAcknowledgment);
if (0 == requestPacket.TSize)
{
responsePacket.Options.Add("tsize", (Int32)_fileInfo.Length);
}
_blockSize = 512;
if (requestPacket.BlockSize > 0)
{
_blockSize = requestPacket.BlockSize;
responsePacket.Options.Add("blksize", _blockSize);
}
_fileBlock = new byte[_blockSize + 4];
_timeout = -1; // TODO: implement
if (requestPacket.Timeout > 0)
{
_timeout = requestPacket.Timeout;
responsePacket.Options.Add("timeout", _timeout);
}
SendData(responsePacket.ToArray(), remoteEndPoint);
}