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RASPPPIP info  Overview  Group

The RASPPPIP structure contains the result of a PPP Internet Protocol (IP) projection operation.

The RasGetProjectionInfo function returns a RASPPPIP data structure when its rasprojection parameter has the value RASP_PppIp.

typedef  struct  _RASPPPIP { 

    DWORD    dwSize; 

    DWORD    dwError; 

    TCHAR    szIpAddress[ RAS_MaxIpAddress + 1 ]; 

} RASPPPIP; 

 

Members

dwSize
Specifies the size of the structure, in bytes. Before calling the RasGetProjectionInfo function, set this member to indicate the version of the RASPPPIP structure that you are using. For information about earlier versions of this structure, see the following Remarks section.
dwError
Contains the result of the PPP control protocol negotiation. A value of zero indicates success. A nonzero value indicates failure, and is the actual fatal error that occurred during the control protocol negotiation, the error that prevented the projection from completing successfully.
szIpAddress
Contains a zero-terminated string that is the client’s IP address on the RAS connection. This address string has the form a.b.c.d; for example, “11.101.237.71”.
szServerIpAddress
Contains a null-terminated string that is the IP address of the remote PPP peer (that is, the server's IP address). This string is in "a.b.c.d" form. PPP does not require that servers provide this address, but Windows NT servers will consistently return the address anyway. Other PPP vendors may not provide the address. If the address is not available, this member returns an empty string, "".

Remarks

The szServerIpAddress member was added to the RASPPPIP structure beginning with Windows NT 3.51 and the initial release of Windows 95. Beginning with these systems, RasGetProjectionInfo will support both the current form of the structure and the old form without the szServerIpAddress member. Use the dwSize member to indicate which version you are using.

For earlier versions of Windows NT, RasGetProjectionInfo will return ERROR_INVALID_SIZE if dwSize specifies the current structure size. To retrieve PPP IP information from older systems, dwSize must specify the size of the old structure without the szServerIpAddress member.

See Also

RasGetProjectionInfo, RASPROJECTION

See also:


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