Miért küldi háromszor?

SZERVEROLDAL:
 case FtpPacket.FileDownloadPacket:
                    Log("File download packet");
                    Log("Everything sent: " + _isEverythingSent.ToString().ToUpper());
                    try
                    {
                        if (_isEverythingSent)
                        {
                            Log("Everything is sent!");
                            Send(Values.Success);
                            return true;
                        }
                        if (!_isFilenameSet)
                        {
                            Log("Send: no filename");
                            Send(Values.NoFilename);
                            return true;
                        }
                        Log("Filebuffer length: " + _fileBuffer.Length);
                        if (_fileBuffer.Length > CHUNK_SIZE) // file is smaller than CHUNK_SIZE, can be sent in one packet
                        {
                            Log("Filesize is bigger than 1024");
                            Log("| current chunk index: " + _currentChunkIndex);
                            if (_fileBuffer.Length - _currentChunkIndex > CHUNK_SIZE)
                            {
                                Log("The remaining data: " + (_fileBuffer.Length - _currentChunkIndex));
                                var tmp = GetSubArray(_fileBuffer, _currentChunkIndex, _fileBuffer.Length - _currentChunkIndex);
                                Send(tmp);
                                Console.WriteLine(tmp.GetString());
                                _currentChunkIndex += CHUNK_SIZE;
                            }
                            else
                            {
                                Log("Filesize is less then 1024");
                                var tmp = GetSubArray(_fileBuffer, _currentChunkIndex, _fileBuffer.Length - _currentChunkIndex);
                                Send(tmp);
                                Console.WriteLine(tmp.GetString());
                                _isEverythingSent = true;
                            }
                        }
                        else
                        {
                            Log("Send: filebuffer - " + _fileBuffer.GetString());
                            Send(_fileBuffer);
                            _isEverythingSent = true;
                        }
                    }
                    catch (Exception e)
                    {
                        Log(e.Message + "\n" + e);
                        Send(Values.Denied);

                        ResetState();
                    }

                    return true;



KLIENSOLDAL:

// Start downloading
            const int CHUNK_SIZE = 1024;
            List<byte> fileContent = new List<byte>();
            List<string> testList = new List<string>();
            bool succeeded = false;
            bytes = new byte[CHUNK_SIZE];
            while (true) // FileDownloadPacket
            {
                Send(Values.Download);
                Send(Values.Endvalue, true);
                Recieve(bytes);
                //Console.WriteLine(bytes.GetString());
                if (bytes.MembersEquals(Values.Success, 2))
                {
                    succeeded = true;
                    break;
                }
                else if (bytes.MembersEquals(Values.Denied, 2) || bytes.MembersEquals(Values.NoFilename, 2))
                {
                    break;
                }
                testList.Add(bytes.GetString());
                fileContent.AddRange(bytes);
                bytes = new byte[CHUNK_SIZE];

            }
            return succeeded ? fileContent.ToArray() : null;