void UserCmd_End(IAsyncResult ar)
{
Login_SO stateObj = (Login_SO)ar.AsyncState;
try
{
stateObj.UpdateContext();
FtpResponse response = _cc.EndSendCommandEx(ar);
if (!response.IsCompletionReply &&
!response.IsIntermediateReply)
{
throw GetLoginFailedException(response);
}
if (response.IsCompletionReply)
{
stateObj.SetCompleted();
}
else
{
_cc.BeginSendCommandEx(stateObj.Timeout,
"PASS " + stateObj.Password,
new AsyncCallback(PasswordCmd_End),
stateObj);
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
}
internal IAsyncResult BeginExecute(int timeout,
string user,
string password,
string account,
AsyncCallback callback,
object state)
{
Login_SO stateObj = null;
SetProgress(true);
try
{
stateObj = new Login_SO(timeout,
password,
account,
callback,
state);
_cc.BeginSendCommandEx(timeout,
"USER " + user,
new AsyncCallback(UserCmd_End),
stateObj);
}
catch (Exception e)
{
SetProgress(false);
throw e;
}
return(stateObj);
}
void AccountCmd_End(IAsyncResult ar)
{
Login_SO stateObj = (Login_SO)ar.AsyncState;
try
{
stateObj.UpdateContext();
FtpResponse response = _cc.EndSendCommandEx(ar);
if (!response.IsCompletionReply)
{
throw GetLoginFailedException(response);
}
}
catch (Exception e)
{
stateObj.Exception = e;
}
stateObj.SetCompleted();
}
void PasswordCmd_End(IAsyncResult ar)
{
Login_SO stateObj = (Login_SO)ar.AsyncState;
try
{
stateObj.UpdateContext();
FtpResponse response = _cc.EndSendCommandEx(ar);
if (!response.IsCompletionReply &&
!response.IsIntermediateReply)
{
throw GetLoginFailedException(response);
}
if (response.IsCompletionReply)
{
stateObj.SetCompleted();
}
else
{
if (null == stateObj.Account)
{
throw new FtpAccountRequiredException("Unable to login, account is required.", response);
}
_cc.BeginSendCommandEx(stateObj.Timeout,
"ACCT " + stateObj.Account,
new AsyncCallback(AccountCmd_End),
stateObj);
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
}
