internal IAsyncResult BeginSendCommand(int timeout, string command, AsyncCallback cb, object state)
{
CheckDisposed();
if (null == command)
{
throw new ArgumentNullException("command", "'command' argument cannot be null");
}
command = AppendCRLF(command);
SetProgress(true);
_response = null;
try
{
_socket.SendTimeout = timeout;
byte[] cmdBytes = _encoding.GetBytes(command);
CCSendStateObject stateObj =
new CCSendStateObject(timeout, cmdBytes, cb, state);
_socket.BeginSend(cmdBytes,
0,
cmdBytes.Length,
new AsyncCallback(this.OnEndSend),
stateObj);
return(stateObj);
}
catch (SocketException e)
{
SetProgress(false);
CheckDisposed();
CheckTimeoutException(e);
throw;
}
catch
{
SetProgress(false);
CheckDisposed();
throw;
}
}
void OnEndSendEx(IAsyncResult ar)
{
CCSendStateObject stateObj = (CCSendStateObject)ar.AsyncState;
try
{
stateObj.UpdateContext();
stateObj.Sent += _socket.EndSend(ar);
int cmdLen = stateObj.Command.Length;
if (stateObj.Sent < cmdLen) //all data was sent?
{
_socket.BeginSend(stateObj.Command,
stateObj.Sent,
cmdLen - stateObj.Sent,
new AsyncCallback(this.OnEndSend),
stateObj);
}
else //all data was sent, read response
{
OnCommandSent(stateObj.Command);
try
{
_reader.BeginReadResponse(stateObj.Timeout, new AsyncCallback(this.OnResponse), stateObj);
}
catch (Exception e)
{
_response = _reader.Response;
throw e;
}
}
}
catch (SocketException e)
{
if (_disposed)
{
stateObj.Exception = GetDisposedException();
}
else if (e.ErrorCode == SockErrors.WSAETIMEDOUT)
{
stateObj.Exception = GetTimeoutException(e);
}
else
{
stateObj.Exception = e;
}
stateObj.SetCompleted();
}
catch (Exception e)
{
if (_disposed)
{
stateObj.Exception = GetDisposedException();
}
else
{
stateObj.Exception = e;
}
stateObj.SetCompleted();
}
catch
{
if (_disposed)
{
stateObj.Exception = GetDisposedException();
stateObj.SetCompleted();
}
else
{
NSTrace.WriteLineError("Non-CLS exception at: " + Environment.StackTrace);
throw;
}
}
}
