internal IAsyncResult BeginExecute(int timeout,
Stream userStream,
long length,
AsyncCallback cb,
object state)
{
PutFileUnique_SO stateObj = null;
SetProgress(true);
_uniqueFileName = null;
try
{
CreateDTP();
stateObj = new PutFileUnique_SO(userStream,
cb,
state);
_cc.ResponseReceived += new FtpControlConnection.ResponseReceivedEventHandler(CC_ResponseReceived);
string cmd = "STOU";
_currentDTP.BeginExecute(timeout,
cmd,
_client.DataType,
-1,
new DTPStreamCommon(userStream, DTPStreamType.ForReading, length),
new AsyncCallback(this.RunDTP_End),
stateObj);
}
catch (Exception e)
{
if (null != _currentDTP)
{
_currentDTP.Dispose();
_currentDTP = null;
}
_cc.ResponseReceived -= new FtpControlConnection.ResponseReceivedEventHandler(CC_ResponseReceived);
SetProgress(false);
throw e;
}
return(stateObj);
}
void RunDTP_End(IAsyncResult ar)
{
PutFileUnique_SO stateObj = (PutFileUnique_SO)ar.AsyncState;
try
{
stateObj.UpdateContext();
_currentDTP.EndExecute(ar);
}
catch (Exception e)
{
stateObj.Exception = e;
}
finally
{
_currentDTP.Dispose();
_currentDTP = null;
_cc.ResponseReceived -= new FtpControlConnection.ResponseReceivedEventHandler(CC_ResponseReceived);
stateObj.SetCompleted();
}
}