void UserStreamRead_End(IAsyncResult ar)
{
TransStateObjectStream stateObj = (TransStateObjectStream)ar.AsyncState;
try
{
stateObj.UpdateContext();
int num = stateObj.UserStream.EndRead(ar);
if (0 == num) //for example coping zero-length file
{
FinishTransferingStream(DataStream);
OnDataTransfered(null, 0);
OnCompleted();
stateObj.SetCompleted();
}
else
{
DataStream.BeginWrite(_workBuffer,
0,
num,
new AsyncCallback(this.WriteDataStream_End),
stateObj);
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
catch
{
NSTrace.WriteLineError("Non-CLS exception at: " + Environment.StackTrace);
throw;
}
}
IAsyncResult BeginRunUploadingStream(DTPStream userStream, AsyncCallback cb, object state)
{
TransStateObjectStream stateObj = new TransStateObjectStream(userStream, cb, state);
userStream.BeginRead(_workBuffer,
0,
_workBuffer.Length,
new AsyncCallback(this.UserStreamRead_End),
stateObj);
return(stateObj);
}
void DataStreamRead_End(IAsyncResult ar)
{
TransStateObjectStream stateObj = (TransStateObjectStream)ar.AsyncState;
try
{
stateObj.UpdateContext();
int num = DataStream.EndRead(ar);
DTPStream userStream = (DTPStream)stateObj.UserStream;
if (num > 0)
{
long require = userStream.AvailableSpace;
if (num > require)
{
num = (int)require;
}
stateObj.Transfered += num;
OnDataTransfered(_workBuffer, num);
//write received data to user stream
userStream.BeginWrite(_workBuffer,
0,
num,
new AsyncCallback(this.UserStreamWrite_End),
stateObj);
}
else
{
userStream.Flush();
OnCompleted();
stateObj.SetCompleted();
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
catch
{
NSTrace.WriteLineError("Non-CLS exception at: " + Environment.StackTrace);
throw;
}
}
void UserStreamWrite_End(IAsyncResult ar)
{
TransStateObjectStream stateObj = (TransStateObjectStream)ar.AsyncState;
try
{
stateObj.UpdateContext();
DTPStream userStream = (DTPStream)stateObj.UserStream;
userStream.EndWrite(ar);
if (_aborted)
{
throw new FtpAbortedException();
}
if (userStream.AvailableSpace > 0)
{
DataStream.BeginRead(_workBuffer,
0,
_workBuffer.Length,
new AsyncCallback(this.DataStreamRead_End),
stateObj);
}
else
{
_manuallyClosed = true;
userStream.Flush();
OnCompleted();
stateObj.SetCompleted();
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
catch
{
NSTrace.WriteLineError("Non-CLS exception at: " + Environment.StackTrace);
throw;
}
}
void WriteDataStream_End(IAsyncResult ar)
{
TransStateObjectStream stateObj = (TransStateObjectStream)ar.AsyncState;
try
{
stateObj.UpdateContext();
DataStream.EndWrite(ar);
if (_aborted)
{
throw new FtpAbortedException();
}
if (stateObj.UserStream.AvailableSpace > 0)
{
//read and send more data
stateObj.UserStream.BeginRead(_workBuffer,
0,
_workBuffer.Length,
new AsyncCallback(this.UserStreamRead_End),
stateObj);
}
else
{
FinishTransferingStream(DataStream);
OnCompleted();
stateObj.SetCompleted();
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
catch
{
NSTrace.WriteLineError("Non-CLS exception at: " + Environment.StackTrace);
throw;
}
}
