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Posted 9 Jan 2000

Calling RasHangUp without errors.

, 9 Jan 2000
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A way to call RasHangUp without hanging your applications or your modem
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The RasHangUp function terminates a remote access connection. The connection is specified with a RAS connection handle. The function releases all RASAPI32.DLL resources associated with the handle. (MSDN)

Then, in remarks, it is mentioned that the application should sleep about 3 seconds, or until RasGetConnectStatus returns ERROR_INVALID_HANDLE. If you realy just call RasHangUp and exit you can "hang" both the modem and rnaapp (the application that implements Dial-Up Services). Furthermore, if you do everything as described in MSDN you may still receive the following error message:

RNAAPP caused an invalid page fault in module xxxx.


This problem was a besetting sin when I wrote my Dial-up dialer program, until I found a solution that works in my program:

DWORD dwRet;
ZeroMemory(&rStatus, sizeof(RASCONNSTATUS));
rStatus.dwSize = sizeof(RASCONNSTATUS);
dwRet = RasGetConnectStatus(hRasConn, &rStatus);
	RasHangUp(hRasConn);  // hRasConn - valid handle to the RAS connection
	MSG msg;
	while (dwRet != ERROR_INVALID_HANDLE)
		while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		dwRet = RasGetConnectStatus(hRasConn, &rStatus);

Note: I removed some unimportant stuff so check this code before using...


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Alexander Fedorov
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GeneralWindows's dialer list Pin
phi-161816-Oct-07 22:49
memberphi-161816-Oct-07 22:49 
GeneralI've some question... Pin
Lee Joung Soo22-May-05 10:01
sussLee Joung Soo22-May-05 10:01 
QuestionHow to use RasDial() WITHOUT phonebook entry? Pin
soniko5-Oct-03 5:10
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AnswerRe: How to use RasDial() WITHOUT phonebook entry? Pin
Ramkrishna Pawar14-May-04 4:29
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GeneralTelephone number Pin
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GeneralRe: Telephone number - and - Does anyone know how to get the user and password ? Pin
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GeneralRe: Telephone number - and - Does anyone know how to get the user and password ? Pin
HackMan5-Dec-01 5:56
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QuestionThanks But ??? Pin
David Fields31-Mar-00 12:26
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QuestionThanks But ??? Pin
David Fields31-Mar-00 12:25
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GeneralRE: Pin
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