public override IAsyncResult BeginGetResponse(AsyncCallback callback, object state)
{
if (asyncResult != null && !asyncResult.IsCompleted)
{
throw new InvalidOperationException("Cannot re-call BeginGetRequestStream/BeginGetResponse while a previous call is still in progress");
}
CheckIfAborted();
asyncResult = new FtpAsyncResult(callback, state);
lock (locker)
{
if (InFinalState())
{
asyncResult.SetCompleted(true, ftpResponse);
}
else
{
if (State == RequestState.Before)
{
State = RequestState.Scheduled;
}
#if SSHARP
ThreadPool.QueueUserWorkItem(ProcessRequest);
#else
Thread thread = new Thread(ProcessRequest);
thread.Start();
#endif
}
}
return(asyncResult);
}
private void ProcessRequest()
#endif
{
if (State == RequestState.Scheduled)
{
ftpResponse = new FtpWebResponse(this, requestUri, method, keepAlive);
try
{
ProcessMethod();
//State = RequestState.Finished;
//finalResponse = ftpResponse;
asyncResult.SetCompleted(false, ftpResponse);
}
catch (Exception e)
{
if (!GetServicePoint().UsesProxy)
{
State = RequestState.Error;
}
SetCompleteWithError(e);
}
}
else
{
if (InProgress())
{
FtpStatus status = GetResponseStatus();
ftpResponse.UpdateStatus(status);
if (ftpResponse.IsFinal())
{
State = RequestState.Finished;
}
}
asyncResult.SetCompleted(false, ftpResponse);
}
}