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RasAdminReleaseIpAddress info  Overview  Group

The RasAdminReleaseIpAddress function is an application-defined function that is exported by a third-party RAS server administration DLL. RAS calls this function to notify your DLL that the remote client was disconnected and that the IP address should be released.

VOID RasAdminReleaseIpAddress(

    WCHAR *lpszUserName,

// pointer to the name of the remote user

    WCHAR *lpszPortName,

// pointer to the name of the port

    IPADDR *pipAddress

// pointer to the IP address



Pointer to a null-terminated Unicode string that contains the name of a remote user for whom an IP address was previously obtained using the RasAdminGetIpAddressForUser function.
Pointer to a null-terminated Unicode string that contains the name of the port on which the user specified by lpszUserName is connected.
Pointer to an IPADDR variable that contains the IP address returned for this user in a previous call to RasAdminGetIpAddressForUser.

Return Values

There is no extended error information for this function; do no call GetLastError.


The RAS server calls your RasAdminReleaseIpAddress function only if your application returned TRUE in the bNotifyRelease parameter during the earlier call to RasAdminGetIpAddressForUser for the user specified by the lpszUserName parameter.

The setup program for a third-party RAS administration DLL must register the DLL with RAS by providing information under the following key in the registry:



To register the DLL, set the following values under this key.

Value Name

Value Data


A REG_SZ string that contains the user-friendly display name of the DLL.


A REG_SZ string that contains the full path of the DLL.

For example, the registry entry for a RAS Administration DLL from a fictional company named Netwerks Corporation might be:


    DisplayName  :  REG_SZ  :  Netwerks RAS Admin DLL

    DLLPath      :  REG_SZ  :  C:\nt\system32\ntwkadm.dll


The setup program for a RAS Administration DLL should also provide remove/uninstall functionality. If a user removes the DLL, the setup program should delete the DLLís registry entries.

See Also


file: /Techref/os/win/api/win32/func/src/f69_25.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2022/5/26 13:14,

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