public async Task <bool> BeginUploadFile(string name, FileUploadReadInputBytesDelegate readInputDelegate, FileUploadBytesWrittenDelegate bytesWrittenDelegate, FileUploadFinishedDelegate uploadFinishedDelegate, IOTaskIsCanceledDelegate taskCanceled, bool binaryMode = false)
{
//check parameter to be null
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("readInputDelegate");
}
if (readInputDelegate == null)
{
throw new ArgumentNullException("readInputDelegate");
}
if (bytesWrittenDelegate == null)
{
throw new ArgumentNullException("bytesWrittenDelegate");
}
if (uploadFinishedDelegate == null)
{
throw new ArgumentNullException("uploadFinishedDelegate");
}
if (taskCanceled == null)
{
throw new ArgumentNullException("taskCanceled");
}
IsIdled = false;
checkConnected();
if (_dataChannelSocket == null)
{
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
}
}
if (binaryMode)
{
EnterBinaryMode();
}
string answer;
if (!TrySendCommandReadAnswer("STOR " + name, out answer))
{
return(false);
}
if (answer == null)
{
return(false);
}
if (answer.Trim().StartsWith("425"))
{
_dataChannelSocket = null;
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
if (!TrySendCommandReadAnswer("STOR " + name, out answer))
{
return(false);
}
if (answer == null)
{
return(false);
}
}
}
if (answer.Trim().StartsWith("150") | answer.Trim().StartsWith("125"))
{
beginUploadData(readInputDelegate, bytesWrittenDelegate, new FileUploadFinishedDelegate((bool success) =>
{
try
{
answer = ReadAnswer(ClientType.ActiveClient);
}
catch (IOException) { throw; }
EnterASCIIMode();
IsIdled = true;
uploadFinishedDelegate(success && answer.Trim().StartsWith("226"));
}), taskCanceled);
}
return(false);
}
public async void BeginUploadFileWithUniqueName(FileUploadReadInputBytesDelegate readInputDelegate, FileUploadBytesWrittenDelegate bytesWrittenDelegate, FileUploadFinishedDelegate uploadFinishedDelegate, IOTaskIsCanceledDelegate taskCanceled, bool binaryMode = false)
{
//check parameter to be null
if (readInputDelegate == null)
{
throw new ArgumentNullException("readInputDelegate");
}
if (bytesWrittenDelegate == null)
{
throw new ArgumentNullException("bytesWrittenDelegate");
}
if (uploadFinishedDelegate == null)
{
throw new ArgumentNullException("uploadFinishedDelegate");
}
if (taskCanceled == null)
{
throw new ArgumentNullException("taskCanceled");
}
IsIdled = false;
checkConnected();
//check whether the passive client is already connected. If not connect a new one.
if (_dataChannelSocket == null)
{
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
}
}
//enter the binary mode when requested
if (binaryMode)
{
EnterBinaryMode();
}
string answer;
if (!TrySendCommandReadAnswer("STOU", out answer))
{
return;
}
if (answer == null)
{
return;
}
if (answer.Trim().StartsWith("425"))
{
_dataChannelSocket = null;
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
if (!TrySendCommandReadAnswer("STOU", out answer))
{
return;
}
if (answer == null)
{
return;
}
}
}
if (answer.Trim().StartsWith("150") & answer.Trim().StartsWith("125"))
{
beginUploadData(readInputDelegate, bytesWrittenDelegate, new FileUploadFinishedDelegate((bool success) =>
{
try
{
answer = ReadAnswer(ClientType.ActiveClient);
}
catch (IOException) { throw; }
EnterASCIIMode();
IsIdled = true;
uploadFinishedDelegate(success && answer.Trim().StartsWith("226"));
}), taskCanceled);
}
}
/// <summary>
/// Internal method to download the content of the download's client connection.
/// </summary>
/// <param name="bytesReadDelegate">A <see cref="FileDownloadBytesReadDelegate"/> which is called everytime an array of bytes has been read from the server. /></param>
/// <param name="downloadFinished">A <see cref="FileDownloadFinished"/> which is called after the entire download has been completed.</param>
/// <param name="taskCanceled">A <see cref="IOTaskIsCanceledDelegate"/> which is called before each reading cycle to cancel the download.</param>>
private void beginDownloadData(FileDownloadBytesReadDelegate bytesReadDelegate, FileDownloadFinished downloadFinished, IOTaskIsCanceledDelegate taskCanceled)
{
ulong totalReadBytes = 0;
int readbytes = 1;
byte[] buffer = new byte[10240];
while (readbytes > 0)
{
if (taskCanceled())
{
break;
}
try
{
readbytes = _dataChannelSocketReader.Read(buffer, 0, 1024);
}
catch (Exception) { break; }
finally
{
totalReadBytes += (ulong)readbytes;
bytesReadDelegate(readbytes, totalReadBytes, buffer);
}
}
_dataChannelSocket.Dispose();
_dataChannelSocket = null;
string answer = string.Empty;
try
{
answer = ReadAnswer(ClientType.ActiveClient);
}
catch (IOException) { throw; }
downloadFinished(totalReadBytes);
}
/// <summary>
/// Downloads a file.
/// </summary>
/// <param name="name">The name of the file.</param>
/// <param name="bytesReadDelegate">A <see cref="FileDownloadBytesReadDelegate"/> which is called everytime an array of bytes has been read from the server. /></param>
/// <param name="downloadFinished">A <see cref="FileDownloadFinished"/> which is called after the entire download has been completed.</param>
/// <param name="taskCanceled">A <see cref="IOTaskIsCanceledDelegate"/> which is called before each reading cycle to cancel the download.</param>
/// <param name="binaryMode">Indicates whether the file should be downloaded in binary or text mode.</param>
public async void BeginDownloadFile(string name, FileDownloadBytesReadDelegate bytesReadDelegate, FileDownloadFinished downloadFinished, IOTaskIsCanceledDelegate taskCanceled, bool binaryMode = false)
{
IsIdled = false;
checkConnected();
if (binaryMode)
{
EnterBinaryMode();
}
if (_dataChannelSocket == null)
{
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
}
}
string answer;
if (!TrySendCommandReadAnswer("RETR " + name, out answer))
{
return;
}
if (answer == null)
{
return;
}
if (answer.Trim().StartsWith("425"))
{
_dataChannelSocket = null;
if (EnterPassiveModeAutomatic)
{
await EnterPassiveMode();
if (!TrySendCommandReadAnswer("RETR " + name, out answer))
{
return;
}
if (answer == null)
{
return;
}
}
}
if (answer.Trim().StartsWith("150") | answer.Trim().StartsWith("125"))
{
beginDownloadData(bytesReadDelegate, new FileDownloadFinished((ulong readbytes) =>
{
EnterASCIIMode();
IsIdled = true;
downloadFinished(readbytes);
}), taskCanceled);
}
}
private void beginUploadData(FileUploadReadInputBytesDelegate readInputDelegate, FileUploadBytesWrittenDelegate bytesWrittenDelegate, FileUploadFinishedDelegate uploadFinishedDelegate, IOTaskIsCanceledDelegate taskCanceled)
{
ulong totalWrittenBytes = 0;
byte[] buffer;
try
{
buffer = readInputDelegate(1024);
while (buffer.Length != 0)
{
//break the loop when the task is marked as canceled
if (taskCanceled())
{
break;
}
_dataChannelSocketWriter.Write(buffer);
_dataChannelSocketWriter.Flush();
totalWrittenBytes += (ulong)buffer.Length;
bytesWrittenDelegate(totalWrittenBytes);
//read new bytes from the input to send them to the server in the next iteration
buffer = readInputDelegate(1024);
}
//dispose client to close connection
_dataChannelSocket.Dispose();
_dataChannelSocket = null;
//inform the caller that the upload is finished
uploadFinishedDelegate(true);
}
catch (Exception)
{
//if client is not null close and dispose it as well
if (_dataChannelSocket != null)
{
_dataChannelSocket.Dispose();
_dataChannelSocket = null;
}
//inform the caller about the failure of the upload
uploadFinishedDelegate(false);
}
}
public async void BeginUploadFile(string absoluteFileName, FileUploadReadInputBytesDelegate readInputDelegate, FileUploadBytesWrittenDelegate bytesWrittenDelegate, FileUploadFinishedDelegate uploadFinishedDelegate, IOTaskIsCanceledDelegate taskCanceled, bool binaryMode = false)
{
await(await getIdledConnection()).BeginUploadFile(absoluteFileName, readInputDelegate, bytesWrittenDelegate, uploadFinishedDelegate, taskCanceled, binaryMode);
}
public async void BeginDownloadFile(string absoluteFileName, FileDownloadBytesReadDelegate bytesReadDelegate, FileDownloadFinished downloadFinished, IOTaskIsCanceledDelegate taskCanceled, bool binaryMode = false)
{
(await getIdledConnection()).BeginDownloadFile(absoluteFileName, bytesReadDelegate, downloadFinished, taskCanceled, binaryMode);
}
