CSock - To verify timeout socket class

Tuesday May 11th 1999 by Seung Kyung, Lee.
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CSock - To verify timeout socket class

Environment: VC6, WindosNT4 SP3


I'm korean and not good at English.

In case of using CSocket class, We have problem to verify connction between computers.
This class(CSock) is solving this problem with method below.
CSocket don't return the proper time when it disconnects another socket.
This cause performance of program to down.

I can find method to solve this problem. I make the class 'CSock'.

If input time-value exceed the time limit,
my Overrided function immediatily return the response.

CSock class is overriding ConnectHelper of CSocket class member functions



/// CSocket modify - timeout module.
BOOL CSock::ConnectHelper(const SOCKADDR* lpSockAddr, int nSockAddrLen)
{
	if (m_pbBlocking != NULL)
	{
		WSASetLastError(WSAEINPROGRESS);
		return  FALSE;
	}

	m_nConnectError = -1;

	if (!CAsyncSocket::ConnectHelper(lpSockAddr, nSockAddrLen))
	{
		if (GetLastError() == WSAEWOULDBLOCK)
		{
	// Insert....
			CTime		curt, st;
			CTimeSpan	span(0, 0, 0, m_nTimeOut);

			st = CTime().GetCurrentTime();
	//.......
			while (PumpMessages(FD_CONNECT))
			{
				if (m_nConnectError != -1)
				{
					WSASetLastError(m_nConnectError);
					return (m_nConnectError == 0);
				}
	// Insert....
				curt = CTime().GetCurrentTime();
				if(curt > (st+span))
					return FALSE;
	//..............
			}
		}
		return FALSE;
	}
	m_Kill = FALSE;
	return TRUE;
}


Download demo & source project - 35 Kb

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